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cobalt / cobalt / 308ed6b84664d59944cd65f4b4359c28a2443be6 / . / src / third_party / angle / src / tests / gl_tests / GLSLTest.cpp
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//
// Copyright 2015 The ANGLE Project Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
//
#include "test_utils/ANGLETest.h"
#include "test_utils/gl_raii.h"
using namespace angle;
namespace
{
class GLSLTest : public ANGLETest
{
protected:
GLSLTest()
{
setWindowWidth(128);
setWindowHeight(128);
setConfigRedBits(8);
setConfigGreenBits(8);
setConfigBlueBits(8);
setConfigAlphaBits(8);
}
std::string GenerateVaryingType(GLint vectorSize)
{
char varyingType[10];
if (vectorSize == 1)
{
sprintf(varyingType, "float");
}
else
{
sprintf(varyingType, "vec%d", vectorSize);
}
return std::string(varyingType);
}
std::string GenerateVectorVaryingDeclaration(GLint vectorSize, GLint arraySize, GLint id)
{
char buff[100];
if (arraySize == 1)
{
sprintf(buff, "varying %s v%d;\n", GenerateVaryingType(vectorSize).c_str(), id);
}
else
{
sprintf(buff, "varying %s v%d[%d];\n", GenerateVaryingType(vectorSize).c_str(), id,
arraySize);
}
return std::string(buff);
}
std::string GenerateVectorVaryingSettingCode(GLint vectorSize, GLint arraySize, GLint id)
{
std::string returnString;
char buff[100];
if (arraySize == 1)
{
sprintf(buff, "\t v%d = %s(1.0);\n", id, GenerateVaryingType(vectorSize).c_str());
returnString += buff;
}
else
{
for (int i = 0; i < arraySize; i++)
{
sprintf(buff, "\t v%d[%d] = %s(1.0);\n", id, i,
GenerateVaryingType(vectorSize).c_str());
returnString += buff;
}
}
return returnString;
}
std::string GenerateVectorVaryingUseCode(GLint arraySize, GLint id)
{
if (arraySize == 1)
{
char buff[100];
sprintf(buff, "v%d + ", id);
return std::string(buff);
}
else
{
std::string returnString;
for (int i = 0; i < arraySize; i++)
{
char buff[100];
sprintf(buff, "v%d[%d] + ", id, i);
returnString += buff;
}
return returnString;
}
}
void GenerateGLSLWithVaryings(GLint floatCount,
GLint floatArrayCount,
GLint vec2Count,
GLint vec2ArrayCount,
GLint vec3Count,
GLint vec3ArrayCount,
GLint vec4Count,
GLint vec4ArrayCount,
bool useFragCoord,
bool usePointCoord,
bool usePointSize,
std::string *fragmentShader,
std::string *vertexShader)
{
// Generate a string declaring the varyings, to share between the fragment shader and the
// vertex shader.
std::string varyingDeclaration;
unsigned int varyingCount = 0;
for (GLint i = 0; i < floatCount; i++)
{
varyingDeclaration += GenerateVectorVaryingDeclaration(1, 1, varyingCount);
varyingCount += 1;
}
for (GLint i = 0; i < floatArrayCount; i++)
{
varyingDeclaration += GenerateVectorVaryingDeclaration(1, 2, varyingCount);
varyingCount += 1;
}
for (GLint i = 0; i < vec2Count; i++)
{
varyingDeclaration += GenerateVectorVaryingDeclaration(2, 1, varyingCount);
varyingCount += 1;
}
for (GLint i = 0; i < vec2ArrayCount; i++)
{
varyingDeclaration += GenerateVectorVaryingDeclaration(2, 2, varyingCount);
varyingCount += 1;
}
for (GLint i = 0; i < vec3Count; i++)
{
varyingDeclaration += GenerateVectorVaryingDeclaration(3, 1, varyingCount);
varyingCount += 1;
}
for (GLint i = 0; i < vec3ArrayCount; i++)
{
varyingDeclaration += GenerateVectorVaryingDeclaration(3, 2, varyingCount);
varyingCount += 1;
}
for (GLint i = 0; i < vec4Count; i++)
{
varyingDeclaration += GenerateVectorVaryingDeclaration(4, 1, varyingCount);
varyingCount += 1;
}
for (GLint i = 0; i < vec4ArrayCount; i++)
{
varyingDeclaration += GenerateVectorVaryingDeclaration(4, 2, varyingCount);
varyingCount += 1;
}
// Generate the vertex shader
vertexShader->clear();
vertexShader->append(varyingDeclaration);
vertexShader->append("\nvoid main()\n{\n");
unsigned int currentVSVarying = 0;
for (GLint i = 0; i < floatCount; i++)
{
vertexShader->append(GenerateVectorVaryingSettingCode(1, 1, currentVSVarying));
currentVSVarying += 1;
}
for (GLint i = 0; i < floatArrayCount; i++)
{
vertexShader->append(GenerateVectorVaryingSettingCode(1, 2, currentVSVarying));
currentVSVarying += 1;
}
for (GLint i = 0; i < vec2Count; i++)
{
vertexShader->append(GenerateVectorVaryingSettingCode(2, 1, currentVSVarying));
currentVSVarying += 1;
}
for (GLint i = 0; i < vec2ArrayCount; i++)
{
vertexShader->append(GenerateVectorVaryingSettingCode(2, 2, currentVSVarying));
currentVSVarying += 1;
}
for (GLint i = 0; i < vec3Count; i++)
{
vertexShader->append(GenerateVectorVaryingSettingCode(3, 1, currentVSVarying));
currentVSVarying += 1;
}
for (GLint i = 0; i < vec3ArrayCount; i++)
{
vertexShader->append(GenerateVectorVaryingSettingCode(3, 2, currentVSVarying));
currentVSVarying += 1;
}
for (GLint i = 0; i < vec4Count; i++)
{
vertexShader->append(GenerateVectorVaryingSettingCode(4, 1, currentVSVarying));
currentVSVarying += 1;
}
for (GLint i = 0; i < vec4ArrayCount; i++)
{
vertexShader->append(GenerateVectorVaryingSettingCode(4, 2, currentVSVarying));
currentVSVarying += 1;
}
if (usePointSize)
{
vertexShader->append("gl_PointSize = 1.0;\n");
}
vertexShader->append("}\n");
// Generate the fragment shader
fragmentShader->clear();
fragmentShader->append("precision highp float;\n");
fragmentShader->append(varyingDeclaration);
fragmentShader->append("\nvoid main() \n{ \n\tvec4 retColor = vec4(0,0,0,0);\n");
unsigned int currentFSVarying = 0;
// Make use of the float varyings
fragmentShader->append("\tretColor += vec4(");
for (GLint i = 0; i < floatCount; i++)
{
fragmentShader->append(GenerateVectorVaryingUseCode(1, currentFSVarying));
currentFSVarying += 1;
}
for (GLint i = 0; i < floatArrayCount; i++)
{
fragmentShader->append(GenerateVectorVaryingUseCode(2, currentFSVarying));
currentFSVarying += 1;
}
fragmentShader->append("0.0, 0.0, 0.0, 0.0);\n");
// Make use of the vec2 varyings
fragmentShader->append("\tretColor += vec4(");
for (GLint i = 0; i < vec2Count; i++)
{
fragmentShader->append(GenerateVectorVaryingUseCode(1, currentFSVarying));
currentFSVarying += 1;
}
for (GLint i = 0; i < vec2ArrayCount; i++)
{
fragmentShader->append(GenerateVectorVaryingUseCode(2, currentFSVarying));
currentFSVarying += 1;
}
fragmentShader->append("vec2(0.0, 0.0), 0.0, 0.0);\n");
// Make use of the vec3 varyings
fragmentShader->append("\tretColor += vec4(");
for (GLint i = 0; i < vec3Count; i++)
{
fragmentShader->append(GenerateVectorVaryingUseCode(1, currentFSVarying));
currentFSVarying += 1;
}
for (GLint i = 0; i < vec3ArrayCount; i++)
{
fragmentShader->append(GenerateVectorVaryingUseCode(2, currentFSVarying));
currentFSVarying += 1;
}
fragmentShader->append("vec3(0.0, 0.0, 0.0), 0.0);\n");
// Make use of the vec4 varyings
fragmentShader->append("\tretColor += ");
for (GLint i = 0; i < vec4Count; i++)
{
fragmentShader->append(GenerateVectorVaryingUseCode(1, currentFSVarying));
currentFSVarying += 1;
}
for (GLint i = 0; i < vec4ArrayCount; i++)
{
fragmentShader->append(GenerateVectorVaryingUseCode(2, currentFSVarying));
currentFSVarying += 1;
}
fragmentShader->append("vec4(0.0, 0.0, 0.0, 0.0);\n");
// Set gl_FragColor, and use special variables if requested
fragmentShader->append("\tgl_FragColor = retColor");
if (useFragCoord)
{
fragmentShader->append(" + gl_FragCoord");
}
if (usePointCoord)
{
fragmentShader->append(" + vec4(gl_PointCoord, 0.0, 0.0)");
}
fragmentShader->append(";\n}");
}
void VaryingTestBase(GLint floatCount,
GLint floatArrayCount,
GLint vec2Count,
GLint vec2ArrayCount,
GLint vec3Count,
GLint vec3ArrayCount,
GLint vec4Count,
GLint vec4ArrayCount,
bool useFragCoord,
bool usePointCoord,
bool usePointSize,
bool expectSuccess)
{
std::string fragmentShaderSource;
std::string vertexShaderSource;
GenerateGLSLWithVaryings(floatCount, floatArrayCount, vec2Count, vec2ArrayCount, vec3Count,
vec3ArrayCount, vec4Count, vec4ArrayCount, useFragCoord,
usePointCoord, usePointSize, &fragmentShaderSource,
&vertexShaderSource);
GLuint program = CompileProgram(vertexShaderSource.c_str(), fragmentShaderSource.c_str());
if (expectSuccess)
{
EXPECT_NE(0u, program);
}
else
{
EXPECT_EQ(0u, program);
}
}
void CompileGLSLWithUniformsAndSamplers(GLint vertexUniformCount,
GLint fragmentUniformCount,
GLint vertexSamplersCount,
GLint fragmentSamplersCount,
bool expectSuccess)
{
std::stringstream vertexShader;
std::stringstream fragmentShader;
// Generate the vertex shader
vertexShader << "precision mediump float;\n";
for (int i = 0; i < vertexUniformCount; i++)
{
vertexShader << "uniform vec4 v" << i << ";\n";
}
for (int i = 0; i < vertexSamplersCount; i++)
{
vertexShader << "uniform sampler2D s" << i << ";\n";
}
vertexShader << "void main()\n{\n";
for (int i = 0; i < vertexUniformCount; i++)
{
vertexShader << " gl_Position += v" << i << ";\n";
}
for (int i = 0; i < vertexSamplersCount; i++)
{
vertexShader << " gl_Position += texture2D(s" << i << ", vec2(0.0, 0.0));\n";
}
if (vertexUniformCount == 0 && vertexSamplersCount == 0)
{
vertexShader << " gl_Position = vec4(0.0);\n";
}
vertexShader << "}\n";
// Generate the fragment shader
fragmentShader << "precision mediump float;\n";
for (int i = 0; i < fragmentUniformCount; i++)
{
fragmentShader << "uniform vec4 v" << i << ";\n";
}
for (int i = 0; i < fragmentSamplersCount; i++)
{
fragmentShader << "uniform sampler2D s" << i << ";\n";
}
fragmentShader << "void main()\n{\n";
for (int i = 0; i < fragmentUniformCount; i++)
{
fragmentShader << " gl_FragColor += v" << i << ";\n";
}
for (int i = 0; i < fragmentSamplersCount; i++)
{
fragmentShader << " gl_FragColor += texture2D(s" << i << ", vec2(0.0, 0.0));\n";
}
if (fragmentUniformCount == 0 && fragmentSamplersCount == 0)
{
fragmentShader << " gl_FragColor = vec4(0.0, 1.0, 0.0, 1.0);\n";
}
fragmentShader << "}\n";
GLuint program = CompileProgram(vertexShader.str().c_str(), fragmentShader.str().c_str());
if (expectSuccess)
{
EXPECT_NE(0u, program);
}
else
{
EXPECT_EQ(0u, program);
}
}
std::string QueryErrorMessage(GLuint program)
{
GLint infoLogLength;
glGetProgramiv(program, GL_INFO_LOG_LENGTH, &infoLogLength);
EXPECT_GL_NO_ERROR();
if (infoLogLength >= 1)
{
std::vector<GLchar> infoLog(infoLogLength);
glGetProgramInfoLog(program, static_cast<GLsizei>(infoLog.size()), nullptr,
infoLog.data());
EXPECT_GL_NO_ERROR();
return infoLog.data();
}
return "";
}
void validateComponentsInErrorMessage(const char *vertexShader,
const char *fragmentShader,
const char *expectedErrorType,
const char *expectedVariableFullName)
{
GLuint vs = CompileShader(GL_VERTEX_SHADER, vertexShader);
GLuint fs = CompileShader(GL_FRAGMENT_SHADER, fragmentShader);
GLuint program = glCreateProgram();
glAttachShader(program, vs);
glAttachShader(program, fs);
glLinkProgram(program);
glDetachShader(program, vs);
glDetachShader(program, fs);
glDeleteShader(vs);
glDeleteShader(fs);
const std::string &errorMessage = QueryErrorMessage(program);
printf("%s\n", errorMessage.c_str());
EXPECT_NE(std::string::npos, errorMessage.find(expectedErrorType));
EXPECT_NE(std::string::npos, errorMessage.find(expectedVariableFullName));
glDeleteProgram(program);
ASSERT_GL_NO_ERROR();
}
void verifyAttachment2DColor(unsigned int index,
GLuint textureName,
GLenum target,
GLint level,
GLColor color)
{
glReadBuffer(GL_COLOR_ATTACHMENT0 + index);
ASSERT_GL_NO_ERROR();
EXPECT_PIXEL_COLOR_EQ(getWindowWidth() / 2, getWindowHeight() / 2, color)
<< "index " << index;
}
};
class GLSLTestNoValidation : public GLSLTest
{
public:
GLSLTestNoValidation() { setNoErrorEnabled(true); }
};
class GLSLTest_ES3 : public GLSLTest
{};
class GLSLTest_ES31 : public GLSLTest
{};
std::string BuillBigInitialStackShader(int length)
{
std::string result;
result += "void main() { \n";
for (int i = 0; i < length; i++)
{
result += " if (true) { \n";
}
result += " int temp; \n";
for (int i = 0; i <= length; i++)
{
result += "} \n";
}
return result;
}
TEST_P(GLSLTest, NamelessScopedStructs)
{
constexpr char kFS[] = R"(precision mediump float;
void main()
{
struct
{
float q;
} b;
gl_FragColor = vec4(1, 0, 0, 1);
gl_FragColor.a += b.q;
})";
ANGLE_GL_PROGRAM(program, essl1_shaders::vs::Simple(), kFS);
}
// Test that array of fragment shader outputs is processed properly and draws
// E.g. was issue with "out vec4 frag_color[4];"
TEST_P(GLSLTest_ES3, FragmentShaderOutputArray)
{
GLuint fbo;
glGenFramebuffers(1, &fbo);
glBindFramebuffer(GL_DRAW_FRAMEBUFFER, fbo);
GLuint textures[4];
glGenTextures(4, textures);
for (size_t texIndex = 0; texIndex < ArraySize(textures); texIndex++)
{
glBindTexture(GL_TEXTURE_2D, textures[texIndex]);
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, getWindowWidth(), getWindowHeight(), 0, GL_RGBA,
GL_UNSIGNED_BYTE, nullptr);
}
GLint maxDrawBuffers;
glGetIntegerv(GL_MAX_DRAW_BUFFERS, &maxDrawBuffers);
ASSERT_GE(maxDrawBuffers, 4);
GLuint readFramebuffer;
glGenFramebuffers(1, &readFramebuffer);
glBindFramebuffer(GL_READ_FRAMEBUFFER, readFramebuffer);
constexpr char kFS[] = R"(#version 300 es
precision highp float;
out vec4 frag_color[4];
void main()
{
frag_color[0] = vec4(1.0, 0.0, 0.0, 1.0);
frag_color[1] = vec4(0.0, 1.0, 0.0, 1.0);
frag_color[2] = vec4(0.0, 0.0, 1.0, 1.0);
frag_color[3] = vec4(1.0, 1.0, 1.0, 1.0);
}
)";
ANGLE_GL_PROGRAM(program, essl3_shaders::vs::Simple(), kFS);
GLenum allBufs[4] = {GL_COLOR_ATTACHMENT0, GL_COLOR_ATTACHMENT1, GL_COLOR_ATTACHMENT2,
GL_COLOR_ATTACHMENT3};
constexpr GLuint kMaxBuffers = 4;
// Enable all draw buffers.
for (GLuint texIndex = 0; texIndex < kMaxBuffers; texIndex++)
{
glBindTexture(GL_TEXTURE_2D, textures[texIndex]);
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0 + texIndex, GL_TEXTURE_2D,
textures[texIndex], 0);
glFramebufferTexture2D(GL_READ_FRAMEBUFFER, GL_COLOR_ATTACHMENT0 + texIndex, GL_TEXTURE_2D,
textures[texIndex], 0);
}
glDrawBuffers(kMaxBuffers, allBufs);
// Draw with simple program.
drawQuad(program, essl3_shaders::PositionAttrib(), 0.5f, 1.0f, true);
ASSERT_GL_NO_ERROR();
verifyAttachment2DColor(0, textures[0], GL_TEXTURE_2D, 0, GLColor::red);
verifyAttachment2DColor(1, textures[1], GL_TEXTURE_2D, 0, GLColor::green);
verifyAttachment2DColor(2, textures[2], GL_TEXTURE_2D, 0, GLColor::blue);
verifyAttachment2DColor(3, textures[3], GL_TEXTURE_2D, 0, GLColor::white);
}
TEST_P(GLSLTest, ScopedStructsOrderBug)
{
// TODO(geofflang): Find out why this doesn't compile on Apple OpenGL drivers
// (http://anglebug.com/1292)
// TODO(geofflang): Find out why this doesn't compile on AMD OpenGL drivers
// (http://anglebug.com/1291)
ANGLE_SKIP_TEST_IF(IsDesktopOpenGL() && (IsOSX() || !IsNVIDIA()));
constexpr char kFS[] = R"(precision mediump float;
struct T
{
float f;
};
void main()
{
T a;
struct T
{
float q;
};
T b;
gl_FragColor = vec4(1, 0, 0, 1);
gl_FragColor.a += a.f;
gl_FragColor.a += b.q;
})";
ANGLE_GL_PROGRAM(program, essl1_shaders::vs::Simple(), kFS);
}
TEST_P(GLSLTest, ScopedStructsBug)
{
constexpr char kFS[] = R"(precision mediump float;
struct T_0
{
float f;
};
void main()
{
gl_FragColor = vec4(1, 0, 0, 1);
struct T
{
vec2 v;
};
T_0 a;
T b;
gl_FragColor.a += a.f;
gl_FragColor.a += b.v.x;
})";
ANGLE_GL_PROGRAM(program, essl1_shaders::vs::Simple(), kFS);
}
TEST_P(GLSLTest, DxPositionBug)
{
constexpr char kVS[] = R"(attribute vec4 inputAttribute;
varying float dx_Position;
void main()
{
gl_Position = vec4(inputAttribute);
dx_Position = 0.0;
})";
constexpr char kFS[] = R"(precision mediump float;
varying float dx_Position;
void main()
{
gl_FragColor = vec4(dx_Position, 0, 0, 1);
})";
ANGLE_GL_PROGRAM(program, kVS, kFS);
}
// Draw an array of points with the first vertex offset at 0 using gl_VertexID
TEST_P(GLSLTest_ES3, GLVertexIDOffsetZeroDrawArray)
{
// http://anglebug.com/4092
ANGLE_SKIP_TEST_IF(isSwiftshader());
constexpr int kStartIndex = 0;
constexpr int kArrayLength = 5;
constexpr char kVS[] = R"(#version 300 es
precision highp float;
void main() {
gl_Position = vec4(float(gl_VertexID)/10.0, 0, 0, 1);
gl_PointSize = 3.0;
})";
constexpr char kFS[] = R"(#version 300 es
precision highp float;
out vec4 outColor;
void main() {
outColor = vec4(1.0, 0.0, 0.0, 1.0);
})";
ANGLE_GL_PROGRAM(program, kVS, kFS);
glUseProgram(program);
glDrawArrays(GL_POINTS, kStartIndex, kArrayLength);
double pointCenterX = static_cast<double>(getWindowWidth()) / 2.0;
double pointCenterY = static_cast<double>(getWindowHeight()) / 2.0;
for (int i = kStartIndex; i < kStartIndex + kArrayLength; i++)
{
double pointOffsetX = static_cast<double>(i * getWindowWidth()) / 20.0;
EXPECT_PIXEL_COLOR_EQ(static_cast<int>(pointCenterX + pointOffsetX),
static_cast<int>(pointCenterY), GLColor::red);
}
}
// Helper function for the GLVertexIDIntegerTextureDrawArrays test
void GLVertexIDIntegerTextureDrawArrays_helper(int first, int count, GLenum err)
{
glDrawArrays(GL_POINTS, first, count);
int pixel[4];
glReadPixels(0, 0, 1, 1, GL_RGBA_INTEGER, GL_INT, pixel);
// If we call this function with err as GL_NO_ERROR, then we expect no error and check the
// pixels.
if (err == static_cast<GLenum>(GL_NO_ERROR))
{
EXPECT_GL_NO_ERROR();
EXPECT_EQ(pixel[0], first + count - 1);
}
else
{
// If we call this function with err set, we will allow the error, but check the pixels if
// the error hasn't occurred.
GLenum glError = glGetError();
if (glError == err || glError == static_cast<GLenum>(GL_NO_ERROR))
{
EXPECT_EQ(pixel[0], first + count - 1);
}
}
}
// Ensure gl_VertexID gets passed to an integer texture properly when drawArrays is called. This
// is based off the WebGL test:
// https://github.com/KhronosGroup/WebGL/blob/master/sdk/tests/conformance2/rendering/vertex-id.html
TEST_P(GLSLTest_ES3, GLVertexIDIntegerTextureDrawArrays)
{
// http://anglebug.com/4092
ANGLE_SKIP_TEST_IF(isSwiftshader());
// Have to set a large point size because the window size is much larger than the texture
constexpr char kVS[] = R"(#version 300 es
flat out highp int vVertexID;
void main() {
vVertexID = gl_VertexID;
gl_Position = vec4(0,0,0,1);
gl_PointSize = 1000.0;
})";
constexpr char kFS[] = R"(#version 300 es
flat in highp int vVertexID;
out highp int oVertexID;
void main() {
oVertexID = vVertexID;
})";
ANGLE_GL_PROGRAM(program, kVS, kFS);
glUseProgram(program);
GLTexture texture;
glBindTexture(GL_TEXTURE_2D, texture);
glTexStorage2D(GL_TEXTURE_2D, 1, GL_R32I, 1, 1);
GLFramebuffer fbo;
glBindFramebuffer(GL_FRAMEBUFFER, fbo);
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, texture, 0);
ASSERT_GLENUM_EQ(GL_FRAMEBUFFER_COMPLETE, glCheckFramebufferStatus(GL_FRAMEBUFFER));
EXPECT_GL_NO_ERROR();
// Clear the texture to 42 to ensure the first test case doesn't accidentally pass
GLint val[4] = {42};
glClearBufferiv(GL_COLOR, 0, val);
int pixel[4];
glReadPixels(0, 0, 1, 1, GL_RGBA_INTEGER, GL_INT, pixel);
EXPECT_EQ(pixel[0], val[0]);
GLVertexIDIntegerTextureDrawArrays_helper(0, 1, GL_NO_ERROR);
GLVertexIDIntegerTextureDrawArrays_helper(1, 1, GL_NO_ERROR);
GLVertexIDIntegerTextureDrawArrays_helper(10000, 1, GL_NO_ERROR);
GLVertexIDIntegerTextureDrawArrays_helper(100000, 1, GL_NO_ERROR);
GLVertexIDIntegerTextureDrawArrays_helper(1000000, 1, GL_NO_ERROR);
GLVertexIDIntegerTextureDrawArrays_helper(0, 2, GL_NO_ERROR);
GLVertexIDIntegerTextureDrawArrays_helper(1, 2, GL_NO_ERROR);
GLVertexIDIntegerTextureDrawArrays_helper(10000, 2, GL_NO_ERROR);
GLVertexIDIntegerTextureDrawArrays_helper(100000, 2, GL_NO_ERROR);
GLVertexIDIntegerTextureDrawArrays_helper(1000000, 2, GL_NO_ERROR);
int32_t int32Max = 0x7FFFFFFF;
GLVertexIDIntegerTextureDrawArrays_helper(int32Max - 2, 1, GL_OUT_OF_MEMORY);
GLVertexIDIntegerTextureDrawArrays_helper(int32Max - 1, 1, GL_OUT_OF_MEMORY);
GLVertexIDIntegerTextureDrawArrays_helper(int32Max, 1, GL_OUT_OF_MEMORY);
}
// Draw an array of points with the first vertex offset at 5 using gl_VertexID
TEST_P(GLSLTest_ES3, GLVertexIDOffsetFiveDrawArray)
{
// http://anglebug.com/4092
ANGLE_SKIP_TEST_IF(isSwiftshader());
// Bug in Nexus drivers, offset does not work. (anglebug.com/3264)
ANGLE_SKIP_TEST_IF((IsNexus5X() || IsNexus6P()) && IsOpenGLES());
constexpr int kStartIndex = 5;
constexpr int kArrayLength = 5;
constexpr char kVS[] = R"(#version 300 es
precision highp float;
void main() {
gl_Position = vec4(float(gl_VertexID)/10.0, 0, 0, 1);
gl_PointSize = 3.0;
})";
constexpr char kFS[] = R"(#version 300 es
precision highp float;
out vec4 outColor;
void main() {
outColor = vec4(1.0, 0.0, 0.0, 1.0);
})";
ANGLE_GL_PROGRAM(program, kVS, kFS);
glUseProgram(program);
glDrawArrays(GL_POINTS, kStartIndex, kArrayLength);
double pointCenterX = static_cast<double>(getWindowWidth()) / 2.0;
double pointCenterY = static_cast<double>(getWindowHeight()) / 2.0;
for (int i = kStartIndex; i < kStartIndex + kArrayLength; i++)
{
double pointOffsetX = static_cast<double>(i * getWindowWidth()) / 20.0;
EXPECT_PIXEL_COLOR_EQ(static_cast<int>(pointCenterX + pointOffsetX),
static_cast<int>(pointCenterY), GLColor::red);
}
}
TEST_P(GLSLTest, ElseIfRewriting)
{
constexpr char kVS[] =
"attribute vec4 a_position;\n"
"varying float v;\n"
"void main() {\n"
" gl_Position = a_position;\n"
" v = 1.0;\n"
" if (a_position.x <= 0.5) {\n"
" v = 0.0;\n"
" } else if (a_position.x >= 0.5) {\n"
" v = 2.0;\n"
" }\n"
"}\n";
constexpr char kFS[] =
"precision highp float;\n"
"varying float v;\n"
"void main() {\n"
" vec4 color = vec4(1.0, 0.0, 0.0, 1.0);\n"
" if (v >= 1.0) color = vec4(0.0, 1.0, 0.0, 1.0);\n"
" if (v >= 2.0) color = vec4(0.0, 0.0, 1.0, 1.0);\n"
" gl_FragColor = color;\n"
"}\n";
ANGLE_GL_PROGRAM(program, kVS, kFS);
drawQuad(program, "a_position", 0.5f);
EXPECT_PIXEL_EQ(0, 0, 255, 0, 0, 255);
EXPECT_PIXEL_EQ(getWindowWidth() - 1, 0, 0, 255, 0, 255);
}
TEST_P(GLSLTest, TwoElseIfRewriting)
{
constexpr char kVS[] =
"attribute vec4 a_position;\n"
"varying float v;\n"
"void main() {\n"
" gl_Position = a_position;\n"
" if (a_position.x == 0.0) {\n"
" v = 1.0;\n"
" } else if (a_position.x > 0.5) {\n"
" v = 0.0;\n"
" } else if (a_position.x > 0.75) {\n"
" v = 0.5;\n"
" }\n"
"}\n";
constexpr char kFS[] =
"precision highp float;\n"
"varying float v;\n"
"void main() {\n"
" gl_FragColor = vec4(v, 0.0, 0.0, 1.0);\n"
"}\n";
ANGLE_GL_PROGRAM(program, kVS, kFS);
}
TEST_P(GLSLTest, FrontFacingAndVarying)
{
EGLPlatformParameters platform = GetParam().eglParameters;
constexpr char kVS[] = R"(attribute vec4 a_position;
varying float v_varying;
void main()
{
v_varying = a_position.x;
gl_Position = a_position;
})";
constexpr char kFS[] = R"(precision mediump float;
varying float v_varying;
void main()
{
vec4 c;
if (gl_FrontFacing)
{
c = vec4(v_varying, 0, 0, 1.0);
}
else
{
c = vec4(0, v_varying, 0, 1.0);
}
gl_FragColor = c;
})";
GLuint program = CompileProgram(kVS, kFS);
// Compilation should fail on D3D11 feature level 9_3, since gl_FrontFacing isn't supported.
if (platform.renderer == EGL_PLATFORM_ANGLE_TYPE_D3D11_ANGLE)
{
if (platform.majorVersion == 9 && platform.minorVersion == 3)
{
EXPECT_EQ(0u, program);
return;
}
}
// Otherwise, compilation should succeed
EXPECT_NE(0u, program);
}
// Test that we can release the shader compiler and still compile things properly.
TEST_P(GLSLTest, ReleaseCompilerThenCompile)
{
// Draw with the first program.
ANGLE_GL_PROGRAM(program1, essl1_shaders::vs::Simple(), essl1_shaders::fs::Red());
drawQuad(program1, essl1_shaders::PositionAttrib(), 0.5f);
ASSERT_GL_NO_ERROR();
EXPECT_PIXEL_COLOR_EQ(0, 0, GLColor::red);
// Clear and release shader compiler.
glClearColor(0.0f, 1.0f, 0.0f, 1.0f);
glClear(GL_COLOR_BUFFER_BIT);
EXPECT_PIXEL_COLOR_EQ(0, 0, GLColor::green);
glReleaseShaderCompiler();
ASSERT_GL_NO_ERROR();
// Draw with a second program.
ANGLE_GL_PROGRAM(program2, essl1_shaders::vs::Simple(), essl1_shaders::fs::Red());
drawQuad(program2, essl1_shaders::PositionAttrib(), 0.5f);
ASSERT_GL_NO_ERROR();
EXPECT_PIXEL_COLOR_EQ(0, 0, GLColor::red);
}
// Verify that linking shaders declaring different shading language versions fails.
TEST_P(GLSLTest_ES3, VersionMismatch)
{
GLuint program = CompileProgram(essl3_shaders::vs::Simple(), essl1_shaders::fs::Red());
EXPECT_EQ(0u, program);
program = CompileProgram(essl1_shaders::vs::Simple(), essl3_shaders::fs::Red());
EXPECT_EQ(0u, program);
}
// Verify that declaring varying as invariant only in vertex shader fails in ESSL 1.00.
TEST_P(GLSLTest, InvariantVaryingOut)
{
constexpr char kFS[] =
"precision mediump float;\n"
"varying float v_varying;\n"
"void main() { gl_FragColor = vec4(v_varying, 0, 0, 1.0); }\n";
constexpr char kVS[] =
"attribute vec4 a_position;\n"
"invariant varying float v_varying;\n"
"void main() { v_varying = a_position.x; gl_Position = a_position; }\n";
GLuint program = CompileProgram(kVS, kFS);
EXPECT_EQ(0u, program);
}
// Verify that declaring varying as invariant only in vertex shader succeeds in ESSL 3.00.
TEST_P(GLSLTest_ES3, InvariantVaryingOut)
{
// TODO: ESSL 3.00 -> GLSL 1.20 translation should add "invariant" in fragment shader
// for varyings which are invariant in vertex shader (http://anglebug.com/1293)
ANGLE_SKIP_TEST_IF(IsDesktopOpenGL());
constexpr char kFS[] =
"#version 300 es\n"
"precision mediump float;\n"
"in float v_varying;\n"
"out vec4 my_FragColor;\n"
"void main() { my_FragColor = vec4(v_varying, 0, 0, 1.0); }\n";
constexpr char kVS[] =
"#version 300 es\n"
"in vec4 a_position;\n"
"invariant out float v_varying;\n"
"void main() { v_varying = a_position.x; gl_Position = a_position; }\n";
GLuint program = CompileProgram(kVS, kFS);
EXPECT_NE(0u, program);
}
// Verify that declaring varying as invariant only in fragment shader fails in ESSL 1.00.
TEST_P(GLSLTest, InvariantVaryingIn)
{
constexpr char kFS[] =
"precision mediump float;\n"
"invariant varying float v_varying;\n"
"void main() { gl_FragColor = vec4(v_varying, 0, 0, 1.0); }\n";
constexpr char kVS[] =
"attribute vec4 a_position;\n"
"varying float v_varying;\n"
"void main() { v_varying = a_position.x; gl_Position = a_position; }\n";
GLuint program = CompileProgram(kVS, kFS);
EXPECT_EQ(0u, program);
}
// Verify that declaring varying as invariant only in fragment shader fails in ESSL 3.00.
TEST_P(GLSLTest_ES3, InvariantVaryingIn)
{
constexpr char kFS[] =
"#version 300 es\n"
"precision mediump float;\n"
"invariant in float v_varying;\n"
"out vec4 my_FragColor;\n"
"void main() { my_FragColor = vec4(v_varying, 0, 0, 1.0); }\n";
constexpr char kVS[] =
"#version 300 es\n"
"in vec4 a_position;\n"
"out float v_varying;\n"
"void main() { v_varying = a_position.x; gl_Position = a_position; }\n";
GLuint program = CompileProgram(kVS, kFS);
EXPECT_EQ(0u, program);
}
// Verify that declaring varying as invariant in both shaders succeeds in ESSL 1.00.
TEST_P(GLSLTest, InvariantVaryingBoth)
{
constexpr char kFS[] =
"precision mediump float;\n"
"invariant varying float v_varying;\n"
"void main() { gl_FragColor = vec4(v_varying, 0, 0, 1.0); }\n";
constexpr char kVS[] =
"attribute vec4 a_position;\n"
"invariant varying float v_varying;\n"
"void main() { v_varying = a_position.x; gl_Position = a_position; }\n";
GLuint program = CompileProgram(kVS, kFS);
EXPECT_NE(0u, program);
}
// Verify that declaring varying as invariant in both shaders fails in ESSL 3.00.
TEST_P(GLSLTest_ES3, InvariantVaryingBoth)
{
constexpr char kFS[] =
"#version 300 es\n"
"precision mediump float;\n"
"invariant in float v_varying;\n"
"out vec4 my_FragColor;\n"
"void main() { my_FragColor = vec4(v_varying, 0, 0, 1.0); }\n";
constexpr char kVS[] =
"#version 300 es\n"
"in vec4 a_position;\n"
"invariant out float v_varying;\n"
"void main() { v_varying = a_position.x; gl_Position = a_position; }\n";
GLuint program = CompileProgram(kVS, kFS);
EXPECT_EQ(0u, program);
}
// Verify that declaring gl_Position as invariant succeeds in ESSL 1.00.
TEST_P(GLSLTest, InvariantGLPosition)
{
constexpr char kFS[] =
"precision mediump float;\n"
"varying float v_varying;\n"
"void main() { gl_FragColor = vec4(v_varying, 0, 0, 1.0); }\n";
constexpr char kVS[] =
"attribute vec4 a_position;\n"
"invariant gl_Position;\n"
"varying float v_varying;\n"
"void main() { v_varying = a_position.x; gl_Position = a_position; }\n";
GLuint program = CompileProgram(kVS, kFS);
EXPECT_NE(0u, program);
}
// Verify that declaring gl_Position as invariant succeeds in ESSL 3.00.
TEST_P(GLSLTest_ES3, InvariantGLPosition)
{
constexpr char kFS[] =
"#version 300 es\n"
"precision mediump float;\n"
"in float v_varying;\n"
"out vec4 my_FragColor;\n"
"void main() { my_FragColor = vec4(v_varying, 0, 0, 1.0); }\n";
constexpr char kVS[] =
"#version 300 es\n"
"in vec4 a_position;\n"
"invariant gl_Position;\n"
"out float v_varying;\n"
"void main() { v_varying = a_position.x; gl_Position = a_position; }\n";
GLuint program = CompileProgram(kVS, kFS);
EXPECT_NE(0u, program);
}
// Verify that using invariant(all) in both shaders fails in ESSL 1.00.
TEST_P(GLSLTest, InvariantAllBoth)
{
constexpr char kFS[] =
"#pragma STDGL invariant(all)\n"
"precision mediump float;\n"
"varying float v_varying;\n"
"void main() { gl_FragColor = vec4(v_varying, 0, 0, 1.0); }\n";
constexpr char kVS[] =
"#pragma STDGL invariant(all)\n"
"attribute vec4 a_position;\n"
"varying float v_varying;\n"
"void main() { v_varying = a_position.x; gl_Position = a_position; }\n";
GLuint program = CompileProgram(kVS, kFS);
EXPECT_EQ(0u, program);
}
// Verify that functions without return statements still compile
TEST_P(GLSLTest, MissingReturnFloat)
{
constexpr char kVS[] =
"varying float v_varying;\n"
"float f() { if (v_varying > 0.0) return 1.0; }\n"
"void main() { gl_Position = vec4(f(), 0, 0, 1); }\n";
GLuint program = CompileProgram(kVS, essl1_shaders::fs::Red());
EXPECT_NE(0u, program);
}
// Verify that functions without return statements still compile
TEST_P(GLSLTest, MissingReturnVec2)
{
constexpr char kVS[] =
"varying float v_varying;\n"
"vec2 f() { if (v_varying > 0.0) return vec2(1.0, 1.0); }\n"
"void main() { gl_Position = vec4(f().x, 0, 0, 1); }\n";
GLuint program = CompileProgram(kVS, essl1_shaders::fs::Red());
EXPECT_NE(0u, program);
}
// Verify that functions without return statements still compile
TEST_P(GLSLTest, MissingReturnVec3)
{
constexpr char kVS[] =
"varying float v_varying;\n"
"vec3 f() { if (v_varying > 0.0) return vec3(1.0, 1.0, 1.0); }\n"
"void main() { gl_Position = vec4(f().x, 0, 0, 1); }\n";
GLuint program = CompileProgram(kVS, essl1_shaders::fs::Red());
EXPECT_NE(0u, program);
}
// Verify that functions without return statements still compile
TEST_P(GLSLTest, MissingReturnVec4)
{
constexpr char kVS[] =
"varying float v_varying;\n"
"vec4 f() { if (v_varying > 0.0) return vec4(1.0, 1.0, 1.0, 1.0); }\n"
"void main() { gl_Position = vec4(f().x, 0, 0, 1); }\n";
GLuint program = CompileProgram(kVS, essl1_shaders::fs::Red());
EXPECT_NE(0u, program);
}
// Verify that functions without return statements still compile
TEST_P(GLSLTest, MissingReturnIVec4)
{
constexpr char kVS[] =
"varying float v_varying;\n"
"ivec4 f() { if (v_varying > 0.0) return ivec4(1, 1, 1, 1); }\n"
"void main() { gl_Position = vec4(f().x, 0, 0, 1); }\n";
GLuint program = CompileProgram(kVS, essl1_shaders::fs::Red());
EXPECT_NE(0u, program);
}
// Verify that functions without return statements still compile
TEST_P(GLSLTest, MissingReturnMat4)
{
constexpr char kVS[] =
"varying float v_varying;\n"
"mat4 f() { if (v_varying > 0.0) return mat4(1.0); }\n"
"void main() { gl_Position = vec4(f()[0][0], 0, 0, 1); }\n";
GLuint program = CompileProgram(kVS, essl1_shaders::fs::Red());
EXPECT_NE(0u, program);
}
// Verify that functions without return statements still compile
TEST_P(GLSLTest, MissingReturnStruct)
{
constexpr char kVS[] =
"varying float v_varying;\n"
"struct s { float a; int b; vec2 c; };\n"
"s f() { if (v_varying > 0.0) return s(1.0, 1, vec2(1.0, 1.0)); }\n"
"void main() { gl_Position = vec4(f().a, 0, 0, 1); }\n";
GLuint program = CompileProgram(kVS, essl1_shaders::fs::Red());
EXPECT_NE(0u, program);
}
// Verify that functions without return statements still compile
TEST_P(GLSLTest_ES3, MissingReturnArray)
{
constexpr char kVS[] =
"#version 300 es\n"
"in float v_varying;\n"
"vec2[2] f() { if (v_varying > 0.0) { return vec2[2](vec2(1.0, 1.0), vec2(1.0, 1.0)); } }\n"
"void main() { gl_Position = vec4(f()[0].x, 0, 0, 1); }\n";
GLuint program = CompileProgram(kVS, essl3_shaders::fs::Red());
EXPECT_NE(0u, program);
}
// Verify that functions without return statements still compile
TEST_P(GLSLTest_ES3, MissingReturnArrayOfStructs)
{
constexpr char kVS[] =
"#version 300 es\n"
"in float v_varying;\n"
"struct s { float a; int b; vec2 c; };\n"
"s[2] f() { if (v_varying > 0.0) { return s[2](s(1.0, 1, vec2(1.0, 1.0)), s(1.0, 1, "
"vec2(1.0, 1.0))); } }\n"
"void main() { gl_Position = vec4(f()[0].a, 0, 0, 1); }\n";
GLuint program = CompileProgram(kVS, essl3_shaders::fs::Red());
EXPECT_NE(0u, program);
}
// Verify that functions without return statements still compile
TEST_P(GLSLTest_ES3, MissingReturnStructOfArrays)
{
// TODO(crbug.com/998505): Test failing on Android FYI Release (NVIDIA Shield TV)
ANGLE_SKIP_TEST_IF(IsNVIDIAShield());
constexpr char kVS[] =
"#version 300 es\n"
"in float v_varying;\n"
"struct s { float a[2]; int b[2]; vec2 c[2]; };\n"
"s f() { if (v_varying > 0.0) { return s(float[2](1.0, 1.0), int[2](1, 1),"
"vec2[2](vec2(1.0, 1.0), vec2(1.0, 1.0))); } }\n"
"void main() { gl_Position = vec4(f().a[0], 0, 0, 1); }\n";
GLuint program = CompileProgram(kVS, essl3_shaders::fs::Red());
EXPECT_NE(0u, program);
}
// Verify that using invariant(all) in both shaders fails in ESSL 3.00.
TEST_P(GLSLTest_ES3, InvariantAllBoth)
{
constexpr char kFS[] =
"#version 300 es\n"
"#pragma STDGL invariant(all)\n"
"precision mediump float;\n"
"in float v_varying;\n"
"out vec4 my_FragColor;\n"
"void main() { my_FragColor = vec4(v_varying, 0, 0, 1.0); }\n";
constexpr char kVS[] =
"#version 300 es\n"
"#pragma STDGL invariant(all)\n"
"in vec4 a_position;\n"
"out float v_varying;\n"
"void main() { v_varying = a_position.x; gl_Position = a_position; }\n";
GLuint program = CompileProgram(kVS, kFS);
EXPECT_EQ(0u, program);
}
// Verify that using invariant(all) only in fragment shader succeeds in ESSL 1.00.
TEST_P(GLSLTest, InvariantAllIn)
{
constexpr char kFS[] =
"#pragma STDGL invariant(all)\n"
"precision mediump float;\n"
"varying float v_varying;\n"
"void main() { gl_FragColor = vec4(v_varying, 0, 0, 1.0); }\n";
constexpr char kVS[] =
"attribute vec4 a_position;\n"
"varying float v_varying;\n"
"void main() { v_varying = a_position.x; gl_Position = a_position; }\n";
GLuint program = CompileProgram(kVS, kFS);
EXPECT_NE(0u, program);
}
// Verify that using invariant(all) only in fragment shader fails in ESSL 3.00.
TEST_P(GLSLTest_ES3, InvariantAllIn)
{
constexpr char kFS[] =
"#version 300 es\n"
"#pragma STDGL invariant(all)\n"
"precision mediump float;\n"
"in float v_varying;\n"
"out vec4 my_FragColor;\n"
"void main() { my_FragColor = vec4(v_varying, 0, 0, 1.0); }\n";
constexpr char kVS[] =
"#version 300 es\n"
"in vec4 a_position;\n"
"out float v_varying;\n"
"void main() { v_varying = a_position.x; gl_Position = a_position; }\n";
GLuint program = CompileProgram(kVS, kFS);
EXPECT_EQ(0u, program);
}
// Verify that using invariant(all) only in vertex shader fails in ESSL 1.00.
TEST_P(GLSLTest, InvariantAllOut)
{
constexpr char kFS[] =
"precision mediump float;\n"
"varying float v_varying;\n"
"void main() { gl_FragColor = vec4(v_varying, 0, 0, 1.0); }\n";
constexpr char kVS[] =
"#pragma STDGL invariant(all)\n"
"attribute vec4 a_position;\n"
"varying float v_varying;\n"
"void main() { v_varying = a_position.x; gl_Position = a_position; }\n";
GLuint program = CompileProgram(kVS, kFS);
EXPECT_EQ(0u, program);
}
// Verify that using invariant(all) only in vertex shader succeeds in ESSL 3.00.
TEST_P(GLSLTest_ES3, InvariantAllOut)
{
// TODO: ESSL 3.00 -> GLSL 1.20 translation should add "invariant" in fragment shader
// for varyings which are invariant in vertex shader,
// because of invariant(all) being used in vertex shader (http://anglebug.com/1293)
ANGLE_SKIP_TEST_IF(IsDesktopOpenGL());
constexpr char kFS[] =
"#version 300 es\n"
"precision mediump float;\n"
"in float v_varying;\n"
"out vec4 my_FragColor;\n"
"void main() { my_FragColor = vec4(v_varying, 0, 0, 1.0); }\n";
constexpr char kVS[] =
"#version 300 es\n"
"#pragma STDGL invariant(all)\n"
"in vec4 a_position;\n"
"out float v_varying;\n"
"void main() { v_varying = a_position.x; gl_Position = a_position; }\n";
GLuint program = CompileProgram(kVS, kFS);
EXPECT_NE(0u, program);
}
TEST_P(GLSLTest, MaxVaryingVec4)
{
// TODO(geofflang): Find out why this doesn't compile on Apple AMD OpenGL drivers
// (http://anglebug.com/1291)
ANGLE_SKIP_TEST_IF(IsOSX() && IsAMD() && IsOpenGL());
GLint maxVaryings = 0;
glGetIntegerv(GL_MAX_VARYING_VECTORS, &maxVaryings);
VaryingTestBase(0, 0, 0, 0, 0, 0, maxVaryings, 0, false, false, false, true);
}
// Verify we can pack registers with one builtin varying.
TEST_P(GLSLTest, MaxVaryingVec4_OneBuiltin)
{
GLint maxVaryings = 0;
glGetIntegerv(GL_MAX_VARYING_VECTORS, &maxVaryings);
// Generate shader code that uses gl_FragCoord.
VaryingTestBase(0, 0, 0, 0, 0, 0, maxVaryings - 1, 0, true, false, false, true);
}
// Verify we can pack registers with two builtin varyings.
TEST_P(GLSLTest, MaxVaryingVec4_TwoBuiltins)
{
GLint maxVaryings = 0;
glGetIntegerv(GL_MAX_VARYING_VECTORS, &maxVaryings);
// Generate shader code that uses gl_FragCoord and gl_PointCoord.
VaryingTestBase(0, 0, 0, 0, 0, 0, maxVaryings - 2, 0, true, true, false, true);
}
// Verify we can pack registers with three builtin varyings.
TEST_P(GLSLTest, MaxVaryingVec4_ThreeBuiltins)
{
GLint maxVaryings = 0;
glGetIntegerv(GL_MAX_VARYING_VECTORS, &maxVaryings);
// Generate shader code that uses gl_FragCoord, gl_PointCoord and gl_PointSize.
VaryingTestBase(0, 0, 0, 0, 0, 0, maxVaryings - 3, 0, true, true, true, true);
}
// This covers a problematic case in D3D9 - we are limited by the number of available semantics,
// rather than total register use.
TEST_P(GLSLTest, MaxVaryingsSpecialCases)
{
ANGLE_SKIP_TEST_IF(!IsD3D9());
GLint maxVaryings = 0;
glGetIntegerv(GL_MAX_VARYING_VECTORS, &maxVaryings);
VaryingTestBase(maxVaryings, 0, 0, 0, 0, 0, 0, 0, true, false, false, false);
VaryingTestBase(maxVaryings - 1, 0, 0, 0, 0, 0, 0, 0, true, true, false, false);
VaryingTestBase(maxVaryings - 2, 0, 0, 0, 0, 0, 0, 0, true, true, false, true);
// Special case for gl_PointSize: we get it for free on D3D9.
VaryingTestBase(maxVaryings - 2, 0, 0, 0, 0, 0, 0, 0, true, true, true, true);
}
// This covers a problematic case in D3D9 - we are limited by the number of available semantics,
// rather than total register use.
TEST_P(GLSLTest, MaxMinusTwoVaryingVec2PlusOneSpecialVariable)
{
GLint maxVaryings = 0;
glGetIntegerv(GL_MAX_VARYING_VECTORS, &maxVaryings);
// Generate shader code that uses gl_FragCoord.
VaryingTestBase(0, 0, maxVaryings, 0, 0, 0, 0, 0, true, false, false, !IsD3D9());
}
TEST_P(GLSLTest, MaxVaryingVec3)
{
GLint maxVaryings = 0;
glGetIntegerv(GL_MAX_VARYING_VECTORS, &maxVaryings);
VaryingTestBase(0, 0, 0, 0, maxVaryings, 0, 0, 0, false, false, false, true);
}
TEST_P(GLSLTest, MaxVaryingVec3Array)
{
GLint maxVaryings = 0;
glGetIntegerv(GL_MAX_VARYING_VECTORS, &maxVaryings);
VaryingTestBase(0, 0, 0, 0, 0, maxVaryings / 2, 0, 0, false, false, false, true);
}
// Only fails on D3D9 because of packing limitations.
TEST_P(GLSLTest, MaxVaryingVec3AndOneFloat)
{
GLint maxVaryings = 0;
glGetIntegerv(GL_MAX_VARYING_VECTORS, &maxVaryings);
VaryingTestBase(1, 0, 0, 0, maxVaryings, 0, 0, 0, false, false, false, !IsD3D9());
}
// Only fails on D3D9 because of packing limitations.
TEST_P(GLSLTest, MaxVaryingVec3ArrayAndOneFloatArray)
{
GLint maxVaryings = 0;
glGetIntegerv(GL_MAX_VARYING_VECTORS, &maxVaryings);
VaryingTestBase(0, 1, 0, 0, 0, maxVaryings / 2, 0, 0, false, false, false, !IsD3D9());
}
// Only fails on D3D9 because of packing limitations.
TEST_P(GLSLTest, TwiceMaxVaryingVec2)
{
// TODO(geofflang): Figure out why this fails on NVIDIA's GLES driver
// (http://anglebug.com/3849)
ANGLE_SKIP_TEST_IF(IsNVIDIA() && IsOpenGLES());
// TODO(geofflang): Find out why this doesn't compile on Apple AMD OpenGL drivers
// (http://anglebug.com/1291)
ANGLE_SKIP_TEST_IF(IsOSX() && IsAMD() && IsOpenGL());
GLint maxVaryings = 0;
glGetIntegerv(GL_MAX_VARYING_VECTORS, &maxVaryings);
VaryingTestBase(0, 0, 2 * maxVaryings, 0, 0, 0, 0, 0, false, false, false, !IsD3D9());
}
// Disabled because of a failure in D3D9
TEST_P(GLSLTest, MaxVaryingVec2Arrays)
{
ANGLE_SKIP_TEST_IF(IsD3DSM3());
// TODO(geofflang): Figure out why this fails on NVIDIA's GLES driver
ANGLE_SKIP_TEST_IF(IsOpenGLES());
// TODO(geofflang): Find out why this doesn't compile on Apple AMD OpenGL drivers
// (http://anglebug.com/1291)
ANGLE_SKIP_TEST_IF(IsOSX() && IsAMD() && IsOpenGL());
GLint maxVaryings = 0;
glGetIntegerv(GL_MAX_VARYING_VECTORS, &maxVaryings);
// Special case: because arrays of mat2 are packed as small grids of two rows by two columns,
// we should be aware that when we're packing into an odd number of varying registers the
// last row will be empty and can not fit the final vec2 arrary.
GLint maxVec2Arrays = (maxVaryings >> 1) << 1;
VaryingTestBase(0, 0, 0, maxVec2Arrays, 0, 0, 0, 0, false, false, false, true);
}
// Verify shader source with a fixed length that is less than the null-terminated length will
// compile.
TEST_P(GLSLTest, FixedShaderLength)
{
GLuint shader = glCreateShader(GL_FRAGMENT_SHADER);
const std::string appendGarbage = "abcdefghijklmnopqrstuvwxyz";
const std::string source = "void main() { gl_FragColor = vec4(0, 0, 0, 0); }" + appendGarbage;
const char *sourceArray[1] = {source.c_str()};
GLint lengths[1] = {static_cast<GLint>(source.length() - appendGarbage.length())};
glShaderSource(shader, static_cast<GLsizei>(ArraySize(sourceArray)), sourceArray, lengths);
glCompileShader(shader);
GLint compileResult;
glGetShaderiv(shader, GL_COMPILE_STATUS, &compileResult);
EXPECT_NE(compileResult, 0);
}
// Verify that a negative shader source length is treated as a null-terminated length.
TEST_P(GLSLTest, NegativeShaderLength)
{
GLuint shader = glCreateShader(GL_FRAGMENT_SHADER);
const char *sourceArray[1] = {essl1_shaders::fs::Red()};
GLint lengths[1] = {-10};
glShaderSource(shader, static_cast<GLsizei>(ArraySize(sourceArray)), sourceArray, lengths);
glCompileShader(shader);
GLint compileResult;
glGetShaderiv(shader, GL_COMPILE_STATUS, &compileResult);
EXPECT_NE(compileResult, 0);
}
// Check that having an invalid char after the "." doesn't cause an assert.
TEST_P(GLSLTest, InvalidFieldFirstChar)
{
GLuint shader = glCreateShader(GL_VERTEX_SHADER);
const char *source = "void main() {vec4 x; x.}";
glShaderSource(shader, 1, &source, 0);
glCompileShader(shader);
GLint compileResult;
glGetShaderiv(shader, GL_COMPILE_STATUS, &compileResult);
EXPECT_EQ(0, compileResult);
}
// Verify that a length array with mixed positive and negative values compiles.
TEST_P(GLSLTest, MixedShaderLengths)
{
GLuint shader = glCreateShader(GL_FRAGMENT_SHADER);
const char *sourceArray[] = {
"void main()",
"{",
" gl_FragColor = vec4(0, 0, 0, 0);",
"}",
};
GLint lengths[] = {
-10,
1,
static_cast<GLint>(strlen(sourceArray[2])),
-1,
};
ASSERT_EQ(ArraySize(sourceArray), ArraySize(lengths));
glShaderSource(shader, static_cast<GLsizei>(ArraySize(sourceArray)), sourceArray, lengths);
glCompileShader(shader);
GLint compileResult;
glGetShaderiv(shader, GL_COMPILE_STATUS, &compileResult);
EXPECT_NE(compileResult, 0);
}
// Verify that zero-length shader source does not affect shader compilation.
TEST_P(GLSLTest, ZeroShaderLength)
{
GLuint shader = glCreateShader(GL_FRAGMENT_SHADER);
const char *sourceArray[] = {
"abcdefg", "34534", "void main() { gl_FragColor = vec4(0, 0, 0, 0); }", "", "abcdefghijklm",
};
GLint lengths[] = {
0, 0, -1, 0, 0,
};
ASSERT_EQ(ArraySize(sourceArray), ArraySize(lengths));
glShaderSource(shader, static_cast<GLsizei>(ArraySize(sourceArray)), sourceArray, lengths);
glCompileShader(shader);
GLint compileResult;
glGetShaderiv(shader, GL_COMPILE_STATUS, &compileResult);
EXPECT_NE(compileResult, 0);
}
// Tests that bad index expressions don't crash ANGLE's translator.
// https://code.google.com/p/angleproject/issues/detail?id=857
TEST_P(GLSLTest, BadIndexBug)
{
constexpr char kFSSourceVec[] =
"precision mediump float;\n"
"uniform vec4 uniformVec;\n"
"void main()\n"
"{\n"
" gl_FragColor = vec4(uniformVec[int()]);\n"
"}";
GLuint shader = CompileShader(GL_FRAGMENT_SHADER, kFSSourceVec);
EXPECT_EQ(0u, shader);
if (shader != 0)
{
glDeleteShader(shader);
}
constexpr char kFSSourceMat[] =
"precision mediump float;\n"
"uniform mat4 uniformMat;\n"
"void main()\n"
"{\n"
" gl_FragColor = vec4(uniformMat[int()]);\n"
"}";
shader = CompileShader(GL_FRAGMENT_SHADER, kFSSourceMat);
EXPECT_EQ(0u, shader);
if (shader != 0)
{
glDeleteShader(shader);
}
constexpr char kFSSourceArray[] =
"precision mediump float;\n"
"uniform vec4 uniformArray;\n"
"void main()\n"
"{\n"
" gl_FragColor = vec4(uniformArray[int()]);\n"
"}";
shader = CompileShader(GL_FRAGMENT_SHADER, kFSSourceArray);
EXPECT_EQ(0u, shader);
if (shader != 0)
{
glDeleteShader(shader);
}
}
// Test that structs defined in uniforms are translated correctly.
TEST_P(GLSLTest, StructSpecifiersUniforms)
{
constexpr char kFS[] = R"(precision mediump float;
uniform struct S { float field; } s;
void main()
{
gl_FragColor = vec4(1, 0, 0, 1);
gl_FragColor.a += s.field;
})";
GLuint program = CompileProgram(essl1_shaders::vs::Simple(), kFS);
EXPECT_NE(0u, program);
}
// Test that structs declaration followed directly by an initialization is translated correctly.
TEST_P(GLSLTest, StructWithInitializer)
{
constexpr char kFS[] = R"(precision mediump float;
struct S { float a; } s = S(1.0);
void main()
{
gl_FragColor = vec4(0, 0, 0, 1);
gl_FragColor.r += s.a;
})";
ANGLE_GL_PROGRAM(program, essl1_shaders::vs::Simple(), kFS);
glUseProgram(program);
// Test drawing, should be red.
drawQuad(program.get(), essl1_shaders::PositionAttrib(), 0.5f);
EXPECT_PIXEL_COLOR_EQ(0, 0, GLColor::red);
EXPECT_GL_NO_ERROR();
}
// Test that structs without initializer, followed by a uniform usage works as expected.
TEST_P(GLSLTest, UniformStructWithoutInitializer)
{
constexpr char kFS[] = R"(precision mediump float;
struct S { float a; };
uniform S u_s;
void main()
{
gl_FragColor = vec4(u_s.a);
})";
ANGLE_GL_PROGRAM(program, essl1_shaders::vs::Simple(), kFS);
glUseProgram(program);
// Test drawing, should be red.
drawQuad(program.get(), essl1_shaders::PositionAttrib(), 0.5f);
EXPECT_PIXEL_COLOR_EQ(0, 0, GLColor::transparentBlack);
EXPECT_GL_NO_ERROR();
}
// Test that structs declaration followed directly by an initialization in a uniform.
TEST_P(GLSLTest, StructWithUniformInitializer)
{
constexpr char kFS[] = R"(precision mediump float;
struct S { float a; } s = S(1.0);
uniform S us;
void main()
{
gl_FragColor = vec4(0, 0, 0, 1);
gl_FragColor.r += s.a;
gl_FragColor.g += us.a;
})";
ANGLE_GL_PROGRAM(program, essl1_shaders::vs::Simple(), kFS);
glUseProgram(program);
// Test drawing, should be red.
drawQuad(program.get(), essl1_shaders::PositionAttrib(), 0.5f);
EXPECT_PIXEL_COLOR_EQ(0, 0, GLColor::red);
EXPECT_GL_NO_ERROR();
}
// Test that gl_DepthRange is not stored as a uniform location. Since uniforms
// beginning with "gl_" are filtered out by our validation logic, we must
// bypass the validation to test the behaviour of the implementation.
// (note this test is still Impl-independent)
TEST_P(GLSLTestNoValidation, DepthRangeUniforms)
{
constexpr char kFS[] = R"(precision mediump float;
void main()
{
gl_FragColor = vec4(gl_DepthRange.near, gl_DepthRange.far, gl_DepthRange.diff, 1);
})";
ANGLE_GL_PROGRAM(program, essl1_shaders::vs::Simple(), kFS);
// We need to bypass validation for this call.
GLint nearIndex = glGetUniformLocation(program.get(), "gl_DepthRange.near");
EXPECT_EQ(-1, nearIndex);
// Test drawing does not throw an exception.
drawQuad(program.get(), essl1_shaders::PositionAttrib(), 0.5f);
EXPECT_GL_NO_ERROR();
}
std::string GenerateSmallPowShader(double base, double exponent)
{
std::stringstream stream;
stream.precision(8);
double result = pow(base, exponent);
stream << "precision highp float;\n"
<< "float fun(float arg)\n"
<< "{\n"
<< " return pow(arg, " << std::fixed << exponent << ");\n"
<< "}\n"
<< "\n"
<< "void main()\n"
<< "{\n"
<< " const float a = " << std::scientific << base << ";\n"
<< " float b = fun(a);\n"
<< " if (abs(" << result << " - b) < " << std::abs(result * 0.001) << ")\n"
<< " {\n"
<< " gl_FragColor = vec4(0.0, 1.0, 0.0, 1.0);\n"
<< " }\n"
<< " else\n"
<< " {\n"
<< " gl_FragColor = vec4(1.0, 0.0, 0.0, 1.0);\n"
<< " }\n"
<< "}\n";
return stream.str();
}
// Covers the WebGL test 'glsl/bugs/pow-of-small-constant-in-user-defined-function'
// See http://anglebug.com/851
TEST_P(GLSLTest, PowOfSmallConstant)
{
// Test with problematic exponents that are close to an integer.
std::vector<double> testExponents;
std::array<double, 5> epsilonMultipliers = {-100.0, -1.0, 0.0, 1.0, 100.0};
for (double epsilonMultiplier : epsilonMultipliers)
{
for (int i = -4; i <= 5; ++i)
{
if (i >= -1 && i <= 1)
continue;
const double epsilon = 1.0e-8;
double bad = static_cast<double>(i) + epsilonMultiplier * epsilon;
testExponents.push_back(bad);
}
}
// Also test with a few exponents that are not close to an integer.
testExponents.push_back(3.6);
testExponents.push_back(3.4);
for (double testExponent : testExponents)
{
const std::string &fragmentShaderSource = GenerateSmallPowShader(1.0e-6, testExponent);
ANGLE_GL_PROGRAM(program, essl1_shaders::vs::Simple(), fragmentShaderSource.c_str());
drawQuad(program.get(), essl1_shaders::PositionAttrib(), 0.5f);
EXPECT_PIXEL_COLOR_EQ(0, 0, GLColor::green);
EXPECT_GL_NO_ERROR();
}
}
// Test that fragment shaders which contain non-constant loop indexers and compiled for FL9_3 and
// below
// fail with a specific error message.
// Additionally test that the same fragment shader compiles successfully with feature levels greater
// than FL9_3.
TEST_P(GLSLTest, LoopIndexingValidation)
{
constexpr char kFS[] = R"(precision mediump float;
uniform float loopMax;
void main()
{
gl_FragColor = vec4(1, 0, 0, 1);
for (float l = 0.0; l < loopMax; l++)
{
if (loopMax > 3.0)
{
gl_FragColor.a += 0.1;
}
}
})";
GLuint shader = glCreateShader(GL_FRAGMENT_SHADER);
const char *sourceArray[1] = {kFS};
glShaderSource(shader, 1, sourceArray, nullptr);
glCompileShader(shader);
GLint compileResult;
glGetShaderiv(shader, GL_COMPILE_STATUS, &compileResult);
// If the test is configured to run limited to Feature Level 9_3, then it is
// assumed that shader compilation will fail with an expected error message containing
// "Loop index cannot be compared with non-constant expression"
if ((GetParam() == ES2_D3D11_FL9_3() || GetParam() == ES2_D3D9()))
{
if (compileResult != 0)
{
FAIL() << "Shader compilation succeeded, expected failure";
}
else
{
GLint infoLogLength;
glGetShaderiv(shader, GL_INFO_LOG_LENGTH, &infoLogLength);
std::string infoLog;
infoLog.resize(infoLogLength);
glGetShaderInfoLog(shader, static_cast<GLsizei>(infoLog.size()), nullptr, &infoLog[0]);
if (infoLog.find("Loop index cannot be compared with non-constant expression") ==
std::string::npos)
{
FAIL() << "Shader compilation failed with unexpected error message";
}
}
}
else
{
EXPECT_NE(0, compileResult);
}
if (shader != 0)
{
glDeleteShader(shader);
}
}
// Tests that the maximum uniforms count returned from querying GL_MAX_VERTEX_UNIFORM_VECTORS
// can actually be used.
TEST_P(GLSLTest, VerifyMaxVertexUniformVectors)
{
// crbug.com/680631
ANGLE_SKIP_TEST_IF(IsOzone() && IsIntel());
int maxUniforms = 10000;
glGetIntegerv(GL_MAX_VERTEX_UNIFORM_VECTORS, &maxUniforms);
EXPECT_GL_NO_ERROR();
std::cout << "Validating GL_MAX_VERTEX_UNIFORM_VECTORS = " << maxUniforms << std::endl;
CompileGLSLWithUniformsAndSamplers(maxUniforms, 0, 0, 0, true);
}
// Tests that the maximum uniforms count returned from querying GL_MAX_VERTEX_UNIFORM_VECTORS
// can actually be used along with the maximum number of texture samplers.
TEST_P(GLSLTest, VerifyMaxVertexUniformVectorsWithSamplers)
{
ANGLE_SKIP_TEST_IF(IsOpenGL() || IsOpenGLES());
int maxUniforms = 10000;
glGetIntegerv(GL_MAX_VERTEX_UNIFORM_VECTORS, &maxUniforms);
EXPECT_GL_NO_ERROR();
std::cout << "Validating GL_MAX_VERTEX_UNIFORM_VECTORS = " << maxUniforms << std::endl;
int maxTextureImageUnits = 0;
glGetIntegerv(GL_MAX_VERTEX_TEXTURE_IMAGE_UNITS, &maxTextureImageUnits);
CompileGLSLWithUniformsAndSamplers(maxUniforms, 0, maxTextureImageUnits, 0, true);
}
// Tests that the maximum uniforms count + 1 from querying GL_MAX_VERTEX_UNIFORM_VECTORS
// fails shader compilation.
TEST_P(GLSLTest, VerifyMaxVertexUniformVectorsExceeded)
{
int maxUniforms = 10000;
glGetIntegerv(GL_MAX_VERTEX_UNIFORM_VECTORS, &maxUniforms);
EXPECT_GL_NO_ERROR();
std::cout << "Validating GL_MAX_VERTEX_UNIFORM_VECTORS + 1 = " << maxUniforms + 1 << std::endl;
CompileGLSLWithUniformsAndSamplers(maxUniforms + 1, 0, 0, 0, false);
}
// Tests that the maximum uniforms count returned from querying GL_MAX_FRAGMENT_UNIFORM_VECTORS
// can actually be used.
TEST_P(GLSLTest, VerifyMaxFragmentUniformVectors)
{
// crbug.com/680631
ANGLE_SKIP_TEST_IF(IsOzone() && IsIntel());
int maxUniforms = 10000;
glGetIntegerv(GL_MAX_FRAGMENT_UNIFORM_VECTORS, &maxUniforms);
EXPECT_GL_NO_ERROR();
std::cout << "Validating GL_MAX_FRAGMENT_UNIFORM_VECTORS = " << maxUniforms << std::endl;
CompileGLSLWithUniformsAndSamplers(0, maxUniforms, 0, 0, true);
}
// Tests that the maximum uniforms count returned from querying GL_MAX_FRAGMENT_UNIFORM_VECTORS
// can actually be used along with the maximum number of texture samplers.
TEST_P(GLSLTest, VerifyMaxFragmentUniformVectorsWithSamplers)
{
ANGLE_SKIP_TEST_IF(IsOpenGL() || IsOpenGLES());
int maxUniforms = 10000;
glGetIntegerv(GL_MAX_FRAGMENT_UNIFORM_VECTORS, &maxUniforms);
EXPECT_GL_NO_ERROR();
int maxTextureImageUnits = 0;
glGetIntegerv(GL_MAX_TEXTURE_IMAGE_UNITS, &maxTextureImageUnits);
CompileGLSLWithUniformsAndSamplers(0, maxUniforms, 0, maxTextureImageUnits, true);
}
// Tests that the maximum uniforms count + 1 from querying GL_MAX_FRAGMENT_UNIFORM_VECTORS
// fails shader compilation.
TEST_P(GLSLTest, VerifyMaxFragmentUniformVectorsExceeded)
{
int maxUniforms = 10000;
glGetIntegerv(GL_MAX_FRAGMENT_UNIFORM_VECTORS, &maxUniforms);
EXPECT_GL_NO_ERROR();
std::cout << "Validating GL_MAX_FRAGMENT_UNIFORM_VECTORS + 1 = " << maxUniforms + 1
<< std::endl;
CompileGLSLWithUniformsAndSamplers(0, maxUniforms + 1, 0, 0, false);
}
// Test compiling shaders using the GL_EXT_shader_texture_lod extension
TEST_P(GLSLTest, TextureLOD)
{
ANGLE_SKIP_TEST_IF(!IsGLExtensionEnabled("GL_EXT_shader_texture_lod"));
constexpr char kFS[] =
"#extension GL_EXT_shader_texture_lod : require\n"
"uniform sampler2D u_texture;\n"
"void main() {\n"
" gl_FragColor = texture2DGradEXT(u_texture, vec2(0.0, 0.0), vec2(0.0, 0.0), vec2(0.0, "
"0.0));\n"
"}\n";
GLuint shader = CompileShader(GL_FRAGMENT_SHADER, kFS);
ASSERT_NE(0u, shader);
glDeleteShader(shader);
}
// HLSL generates extra lod0 variants of functions. There was a bug that incorrectly reworte
// function calls to use them in vertex shaders. http://anglebug.com/3471
TEST_P(GLSLTest, TextureLODRewriteInVertexShader)
{
constexpr char kVS[] = R"(
precision highp float;
uniform int uni;
uniform sampler2D texture;
vec4 A();
vec4 B() {
vec4 a;
for(int r=0; r<14; r++){
if (r < uni) return vec4(0.0);
a = A();
}
return a;
}
vec4 A() {
return texture2D(texture, vec2(0.0, 0.0));
}
void main() {
gl_Position = B();
})";
constexpr char kFS[] = R"(
void main() { gl_FragColor = vec4(gl_FragCoord.x / 640.0, gl_FragCoord.y / 480.0, 0, 1); }
)";
ANGLE_GL_PROGRAM(program, kVS, kFS);
}
// Test to verify the a shader can have a sampler unused in a vertex shader
// but used in the fragment shader.
TEST_P(GLSLTest, VerifySamplerInBothVertexAndFragmentShaders)
{
constexpr char kVS[] = R"(
attribute vec2 position;
varying mediump vec2 texCoord;
uniform sampler2D tex;
void main()
{
gl_Position = vec4(position, 0, 1);
texCoord = position * 0.5 + vec2(0.5);
})";
constexpr char kFS[] = R"(
varying mediump vec2 texCoord;
uniform sampler2D tex;
void main()
{
gl_FragColor = texture2D(tex, texCoord);
})";
ANGLE_GL_PROGRAM(program, kVS, kFS);
// Initialize basic red texture.
const std::vector<GLColor> redColors(4, GLColor::red);
GLTexture texture;
glBindTexture(GL_TEXTURE_2D, texture);
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, 2, 2, 0, GL_RGBA, GL_UNSIGNED_BYTE, redColors.data());
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
ASSERT_GL_NO_ERROR();
drawQuad(program, "position", 0.0f);
EXPECT_PIXEL_RECT_EQ(0, 0, getWindowWidth(), getWindowHeight(), GLColor::red);
}
// Test that two constructors which have vec4 and mat2 parameters get disambiguated (issue in
// HLSL).
TEST_P(GLSLTest_ES3, AmbiguousConstructorCall2x2)
{
constexpr char kVS[] =
"#version 300 es\n"
"precision highp float;\n"
"in vec4 a_vec;\n"
"in mat2 a_mat;\n"
"void main()\n"
"{\n"
" gl_Position = vec4(a_vec) + vec4(a_mat);\n"
"}";
GLuint program = CompileProgram(kVS, essl3_shaders::fs::Red());
EXPECT_NE(0u, program);
}
// Test that two constructors which have mat2x3 and mat3x2 parameters get disambiguated.
// This was suspected to be an issue in HLSL, but HLSL seems to be able to natively choose between
// the function signatures in this case.
TEST_P(GLSLTest_ES3, AmbiguousConstructorCall2x3)
{
constexpr char kVS[] =
"#version 300 es\n"
"precision highp float;\n"
"in mat3x2 a_matA;\n"
"in mat2x3 a_matB;\n"
"void main()\n"
"{\n"
" gl_Position = vec4(a_matA) + vec4(a_matB);\n"
"}";
GLuint program = CompileProgram(kVS, essl3_shaders::fs::Red());
EXPECT_NE(0u, program);
}
// Test that two functions which have vec4 and mat2 parameters get disambiguated (issue in HLSL).
TEST_P(GLSLTest_ES3, AmbiguousFunctionCall2x2)
{
constexpr char kVS[] =
"#version 300 es\n"
"precision highp float;\n"
"in vec4 a_vec;\n"
"in mat2 a_mat;\n"
"vec4 foo(vec4 a)\n"
"{\n"
" return a;\n"
"}\n"
"vec4 foo(mat2 a)\n"
"{\n"
" return vec4(a[0][0]);\n"
"}\n"
"void main()\n"
"{\n"
" gl_Position = foo(a_vec) + foo(a_mat);\n"
"}";
GLuint program = CompileProgram(kVS, essl3_shaders::fs::Red());
EXPECT_NE(0u, program);
}
// Test that an user-defined function with a large number of float4 parameters doesn't fail due to
// the function name being too long.
TEST_P(GLSLTest_ES3, LargeNumberOfFloat4Parameters)
{
std::stringstream vertexShaderStream;
const unsigned int paramCount = 1024u;
vertexShaderStream << "#version 300 es\n"
"precision highp float;\n"
"in vec4 a_vec;\n"
"vec4 lotsOfVec4Parameters(";
for (unsigned int i = 0; i < paramCount; ++i)
{
vertexShaderStream << "vec4 a" << i << ", ";
}
vertexShaderStream << "vec4 aLast)\n"
"{\n"
" vec4 sum = vec4(0.0, 0.0, 0.0, 0.0);\n";
for (unsigned int i = 0; i < paramCount; ++i)
{
vertexShaderStream << " sum += a" << i << ";\n";
}
vertexShaderStream << " sum += aLast;\n"
" return sum;\n "
"}\n"
"void main()\n"
"{\n"
" gl_Position = lotsOfVec4Parameters(";
for (unsigned int i = 0; i < paramCount; ++i)
{
vertexShaderStream << "a_vec, ";
}
vertexShaderStream << "a_vec);\n"
"}";
GLuint program = CompileProgram(vertexShaderStream.str().c_str(), essl3_shaders::fs::Red());
EXPECT_NE(0u, program);
}
// This test was written specifically to stress DeferGlobalInitializers AST transformation.
// Test a shader where a global constant array is initialized with an expression containing array
// indexing. This initializer is tricky to constant fold, so if it's not constant folded it needs to
// be handled in a way that doesn't generate statements in the global scope in HLSL output.
// Also includes multiple array initializers in one declaration, where only the second one has
// array indexing. This makes sure that the qualifier for the declaration is set correctly if
// transformations are applied to the declaration also in the case of ESSL output.
TEST_P(GLSLTest_ES3, InitGlobalArrayWithArrayIndexing)
{
// TODO(ynovikov): re-enable once root cause of http://anglebug.com/1428 is fixed
ANGLE_SKIP_TEST_IF(IsAndroid() && IsAdreno() && IsOpenGLES());
constexpr char kFS[] =
"#version 300 es\n"
"precision highp float;\n"
"out vec4 my_FragColor;\n"
"const highp float f[2] = float[2](0.1, 0.2);\n"
"const highp float[2] g = float[2](0.3, 0.4), h = float[2](0.5, f[1]);\n"
"void main()\n"
"{\n"
" my_FragColor = vec4(h[1]);\n"
"}";
GLuint program = CompileProgram(essl3_shaders::vs::Simple(), kFS);
EXPECT_NE(0u, program);
}
// Test that index-constant sampler array indexing is supported.
TEST_P(GLSLTest, IndexConstantSamplerArrayIndexing)
{
ANGLE_SKIP_TEST_IF(IsD3D11_FL93());
constexpr char kFS[] =
"precision mediump float;\n"
"uniform sampler2D uni[2];\n"
"\n"
"float zero(int x)\n"
"{\n"
" return float(x) - float(x);\n"
"}\n"
"\n"
"void main()\n"
"{\n"
" vec4 c = vec4(0,0,0,0);\n"
" for (int ii = 1; ii < 3; ++ii) {\n"
" if (c.x > 255.0) {\n"
" c.x = 255.0 + zero(ii);\n"
" break;\n"
" }\n"
// Index the sampler array with a predictable loop index (index-constant) as opposed to
// a true constant. This is valid in OpenGL ES but isn't in many Desktop OpenGL versions,
// without an extension.
" c += texture2D(uni[ii - 1], vec2(0.5, 0.5));\n"
" }\n"
" gl_FragColor = c;\n"
"}";
GLuint program = CompileProgram(essl1_shaders::vs::Simple(), kFS);
EXPECT_NE(0u, program);
}
// Test that the #pragma directive is supported and doesn't trigger a compilation failure on the
// native driver. The only pragma that gets passed to the OpenGL driver is "invariant" but we don't
// want to test its behavior, so don't use any varyings.
TEST_P(GLSLTest, PragmaDirective)
{
constexpr char kVS[] =
"#pragma STDGL invariant(all)\n"
"void main()\n"
"{\n"
" gl_Position = vec4(1.0, 0.0, 0.0, 1.0);\n"
"}\n";
GLuint program = CompileProgram(kVS, essl1_shaders::fs::Red());
EXPECT_NE(0u, program);
}
// Sequence operator evaluates operands from left to right (ESSL 3.00 section 5.9).
// The function call that returns the array needs to be evaluated after ++j for the expression to
// return the correct value (true).
TEST_P(GLSLTest_ES3, SequenceOperatorEvaluationOrderArray)
{
constexpr char kFS[] =
"#version 300 es\n"
"precision mediump float;\n"
"out vec4 my_FragColor; \n"
"int[2] func(int param) {\n"
" return int[2](param, param);\n"
"}\n"
"void main() {\n"
" int a[2]; \n"
" for (int i = 0; i < 2; ++i) {\n"
" a[i] = 1;\n"
" }\n"
" int j = 0; \n"
" bool result = ((++j), (a == func(j)));\n"
" my_FragColor = vec4(0.0, (result ? 1.0 : 0.0), 0.0, 1.0);\n"
"}\n";
GLuint program = CompileProgram(essl3_shaders::vs::Simple(), kFS);
ASSERT_NE(0u, program);
drawQuad(program, essl3_shaders::PositionAttrib(), 0.5f);
EXPECT_PIXEL_COLOR_EQ(0, 0, GLColor::green);
}
// Sequence operator evaluates operands from left to right (ESSL 3.00 section 5.9).
// The short-circuiting expression needs to be evaluated after ++j for the expression to return the
// correct value (true).
TEST_P(GLSLTest_ES3, SequenceOperatorEvaluationOrderShortCircuit)
{
constexpr char kFS[] =
"#version 300 es\n"
"precision mediump float;\n"
"out vec4 my_FragColor; \n"
"void main() {\n"
" int j = 0; \n"
" bool result = ((++j), (j == 1 ? true : (++j == 3)));\n"
" my_FragColor = vec4(0.0, ((result && j == 1) ? 1.0 : 0.0), 0.0, 1.0);\n"
"}\n";
GLuint program = CompileProgram(essl3_shaders::vs::Simple(), kFS);
ASSERT_NE(0u, program);
drawQuad(program, essl3_shaders::PositionAttrib(), 0.5f);
EXPECT_PIXEL_COLOR_EQ(0, 0, GLColor::green);
}
// Sequence operator evaluates operands from left to right (ESSL 3.00 section 5.9).
// Indexing the vector needs to be evaluated after func() for the right result.
TEST_P(GLSLTest_ES3, SequenceOperatorEvaluationOrderDynamicVectorIndexingInLValue)
{
constexpr char kFS[] =
"#version 300 es\n"
"precision mediump float;\n"
"out vec4 my_FragColor;\n"
"uniform int u_zero;\n"
"int sideEffectCount = 0;\n"
"float func() {\n"
" ++sideEffectCount;\n"
" return -1.0;\n"
"}\n"
"void main() {\n"
" vec4 v = vec4(0.0, 2.0, 4.0, 6.0); \n"
" float f = (func(), (++v[u_zero + sideEffectCount]));\n"
" bool green = abs(f - 3.0) < 0.01 && abs(v[1] - 3.0) < 0.01 && sideEffectCount == 1;\n"
" my_FragColor = vec4(0.0, (green ? 1.0 : 0.0), 0.0, 1.0);\n"
"}\n";
GLuint program = CompileProgram(essl3_shaders::vs::Simple(), kFS);
ASSERT_NE(0u, program);
drawQuad(program, essl3_shaders::PositionAttrib(), 0.5f);
EXPECT_PIXEL_COLOR_EQ(0, 0, GLColor::green);
}
// Test that using gl_PointCoord with GL_TRIANGLES doesn't produce a link error.
// From WebGL test conformance/rendering/point-specific-shader-variables.html
// See http://anglebug.com/1380
TEST_P(GLSLTest, RenderTrisWithPointCoord)
{
constexpr char kVS[] =
"attribute vec2 aPosition;\n"
"void main()\n"
"{\n"
" gl_Position = vec4(aPosition, 0, 1);\n"
" gl_PointSize = 1.0;\n"
"}";
constexpr char kFS[] =
"void main()\n"
"{\n"
" gl_FragColor = vec4(gl_PointCoord.xy, 0, 1);\n"
" gl_FragColor = vec4(0, 1, 0, 1);\n"
"}";
ANGLE_GL_PROGRAM(prog, kVS, kFS);
drawQuad(prog.get(), "aPosition", 0.5f);
EXPECT_PIXEL_COLOR_EQ(0, 0, GLColor::green);
}
// Convers a bug with the integer pow statement workaround.
TEST_P(GLSLTest, NestedPowStatements)
{
constexpr char kFS[] =
"precision mediump float;\n"
"float func(float v)\n"
"{\n"
" float f1 = pow(v, 2.0);\n"
" return pow(f1 + v, 2.0);\n"
"}\n"
"void main()\n"
"{\n"
" float v = func(2.0);\n"
" gl_FragColor = abs(v - 36.0) < 0.001 ? vec4(0, 1, 0, 1) : vec4(1, 0, 0, 1);\n"
"}";
ANGLE_GL_PROGRAM(prog, essl1_shaders::vs::Simple(), kFS);
drawQuad(prog.get(), essl1_shaders::PositionAttrib(), 0.5f);
EXPECT_PIXEL_COLOR_EQ(0, 0, GLColor::green);
}
// Test that -float calculation is correct.
TEST_P(GLSLTest_ES3, UnaryMinusOperatorFloat)
{
constexpr char kFS[] =
"#version 300 es\n"
"out highp vec4 o_color;\n"
"void main() {\n"
" highp float f = -1.0;\n"
" // atan(tan(0.5), -f) should be 0.5.\n"
" highp float v = atan(tan(0.5), -f);\n"
" o_color = abs(v - 0.5) < 0.001 ? vec4(0, 1, 0, 1) : vec4(1, 0, 0, 1);\n"
"}\n";
ANGLE_GL_PROGRAM(prog, essl3_shaders::vs::Simple(), kFS);
drawQuad(prog.get(), essl3_shaders::PositionAttrib(), 0.5f);
EXPECT_PIXEL_COLOR_EQ(0, 0, GLColor::green);
}
// Test that atan(vec2, vec2) calculation is correct.
TEST_P(GLSLTest_ES3, AtanVec2)
{
constexpr char kFS[] =
"#version 300 es\n"
"out highp vec4 o_color;\n"
"void main() {\n"
" highp float f = 1.0;\n"
" // atan(tan(0.5), f) should be 0.5.\n"
" highp vec2 v = atan(vec2(tan(0.5)), vec2(f));\n"
" o_color = (abs(v[0] - 0.5) < 0.001 && abs(v[1] - 0.5) < 0.001) ? vec4(0, 1, 0, 1) : "
"vec4(1, 0, 0, 1);\n"
"}\n";
ANGLE_GL_PROGRAM(prog, essl3_shaders::vs::Simple(), kFS);
drawQuad(prog.get(), essl3_shaders::PositionAttrib(), 0.5f);
EXPECT_PIXEL_COLOR_EQ(0, 0, GLColor::green);
}
// Convers a bug with the unary minus operator on signed integer workaround.
TEST_P(GLSLTest_ES3, UnaryMinusOperatorSignedInt)
{
constexpr char kVS[] =
"#version 300 es\n"
"in highp vec4 position;\n"
"out mediump vec4 v_color;\n"
"uniform int ui_one;\n"
"uniform int ui_two;\n"
"uniform int ui_three;\n"
"void main() {\n"
" int s[3];\n"
" s[0] = ui_one;\n"
" s[1] = -(-(-ui_two + 1) + 1);\n" // s[1] = -ui_two
" s[2] = ui_three;\n"
" int result = 0;\n"
" for (int i = 0; i < ui_three; i++) {\n"
" result += s[i];\n"
" }\n"
" v_color = (result == 2) ? vec4(0, 1, 0, 1) : vec4(1, 0, 0, 1);\n"
" gl_Position = position;\n"
"}\n";
constexpr char kFS[] =
"#version 300 es\n"
"in mediump vec4 v_color;\n"
"layout(location=0) out mediump vec4 o_color;\n"
"void main() {\n"
" o_color = v_color;\n"
"}\n";
ANGLE_GL_PROGRAM(prog, kVS, kFS);
GLint oneIndex = glGetUniformLocation(prog.get(), "ui_one");
ASSERT_NE(-1, oneIndex);
GLint twoIndex = glGetUniformLocation(prog.get(), "ui_two");
ASSERT_NE(-1, twoIndex);
GLint threeIndex = glGetUniformLocation(prog.get(), "ui_three");
ASSERT_NE(-1, threeIndex);
glUseProgram(prog.get());
glUniform1i(oneIndex, 1);
glUniform1i(twoIndex, 2);
glUniform1i(threeIndex, 3);
drawQuad(prog.get(), "position", 0.5f);
EXPECT_PIXEL_COLOR_EQ(0, 0, GLColor::green);
}
// Convers a bug with the unary minus operator on unsigned integer workaround.
TEST_P(GLSLTest_ES3, UnaryMinusOperatorUnsignedInt)
{
constexpr char kVS[] =
"#version 300 es\n"
"in highp vec4 position;\n"
"out mediump vec4 v_color;\n"
"uniform uint ui_one;\n"
"uniform uint ui_two;\n"
"uniform uint ui_three;\n"
"void main() {\n"
" uint s[3];\n"
" s[0] = ui_one;\n"
" s[1] = -(-(-ui_two + 1u) + 1u);\n" // s[1] = -ui_two
" s[2] = ui_three;\n"
" uint result = 0u;\n"
" for (uint i = 0u; i < ui_three; i++) {\n"
" result += s[i];\n"
" }\n"
" v_color = (result == 2u) ? vec4(0, 1, 0, 1) : vec4(1, 0, 0, 1);\n"
" gl_Position = position;\n"
"}\n";
constexpr char kFS[] =
"#version 300 es\n"
"in mediump vec4 v_color;\n"
"layout(location=0) out mediump vec4 o_color;\n"
"void main() {\n"
" o_color = v_color;\n"
"}\n";
ANGLE_GL_PROGRAM(prog, kVS, kFS);
GLint oneIndex = glGetUniformLocation(prog.get(), "ui_one");
ASSERT_NE(-1, oneIndex);
GLint twoIndex = glGetUniformLocation(prog.get(), "ui_two");
ASSERT_NE(-1, twoIndex);
GLint threeIndex = glGetUniformLocation(prog.get(), "ui_three");
ASSERT_NE(-1, threeIndex);
glUseProgram(prog.get());
glUniform1ui(oneIndex, 1u);
glUniform1ui(twoIndex, 2u);
glUniform1ui(threeIndex, 3u);
drawQuad(prog.get(), "position", 0.5f);
EXPECT_PIXEL_COLOR_EQ(0, 0, GLColor::green);
}
// Test a nested sequence operator with a ternary operator inside. The ternary operator is
// intended to be such that it gets converted to an if statement on the HLSL backend.
TEST_P(GLSLTest, NestedSequenceOperatorWithTernaryInside)
{
// Note that the uniform keep_flop_positive doesn't need to be set - the test expects it to have
// its default value false.
constexpr char kFS[] =
"precision mediump float;\n"
"uniform bool keep_flop_positive;\n"
"float flop;\n"
"void main() {\n"
" flop = -1.0,\n"
" (flop *= -1.0,\n"
" keep_flop_positive ? 0.0 : flop *= -1.0),\n"
" gl_FragColor = vec4(0, -flop, 0, 1);\n"
"}";
ANGLE_GL_PROGRAM(prog, essl1_shaders::vs::Simple(), kFS);
drawQuad(prog.get(), essl1_shaders::PositionAttrib(), 0.5f);
EXPECT_PIXEL_COLOR_EQ(0, 0, GLColor::green);
}
// Test that using a sampler2D and samplerExternalOES in the same shader works (anglebug.com/1534)
TEST_P(GLSLTest, ExternalAnd2DSampler)
{
ANGLE_SKIP_TEST_IF(!IsGLExtensionEnabled("GL_OES_EGL_image_external"));
constexpr char kFS[] = R"(#extension GL_OES_EGL_image_external : enable
precision mediump float;
uniform samplerExternalOES tex0;
uniform sampler2D tex1;
void main(void)
{
vec2 uv = vec2(0.0, 0.0);
gl_FragColor = texture2D(tex0, uv) + texture2D(tex1, uv);
})";
ANGLE_GL_PROGRAM(program, essl1_shaders::vs::Simple(), kFS);
}
// Test that literal infinity can be written out from the shader translator.
// A similar test can't be made for NaNs, since ESSL 3.00.6 requirements for NaNs are very loose.
TEST_P(GLSLTest_ES3, LiteralInfinityOutput)
{
constexpr char kFS[] =
"#version 300 es\n"
"precision highp float;\n"
"out vec4 out_color;\n"
"uniform float u;\n"
"void main()\n"
"{\n"
" float infVar = 1.0e40 - u;\n"
" bool correct = isinf(infVar) && infVar > 0.0;\n"
" out_color = correct ? vec4(0.0, 1.0, 0.0, 1.0) : vec4(1.0, 0.0, 0.0, 1.0);\n"
"}\n";
ANGLE_GL_PROGRAM(program, essl3_shaders::vs::Simple(), kFS);
drawQuad(program.get(), essl3_shaders::PositionAttrib(), 0.5f);
EXPECT_PIXEL_COLOR_EQ(0, 0, GLColor::green);
}
// Test that literal negative infinity can be written out from the shader translator.
// A similar test can't be made for NaNs, since ESSL 3.00.6 requirements for NaNs are very loose.
TEST_P(GLSLTest_ES3, LiteralNegativeInfinityOutput)
{
constexpr char kFS[] =
"#version 300 es\n"
"precision highp float;\n"
"out vec4 out_color;\n"
"uniform float u;\n"
"void main()\n"
"{\n"
" float infVar = -1.0e40 + u;\n"
" bool correct = isinf(infVar) && infVar < 0.0;\n"
" out_color = correct ? vec4(0.0, 1.0, 0.0, 1.0) : vec4(1.0, 0.0, 0.0, 1.0);\n"
"}\n";
ANGLE_GL_PROGRAM(program, essl3_shaders::vs::Simple(), kFS);
drawQuad(program.get(), essl3_shaders::PositionAttrib(), 0.5f);
EXPECT_PIXEL_COLOR_EQ(0, 0, GLColor::green);
}
// The following MultipleDeclaration* tests are testing TranslatorHLSL specific simplification
// passes. Because the interaction of multiple passes must be tested, it is difficult to write
// a unittest for them. Instead we add the tests as end2end so will in particular test
// TranslatorHLSL when run on Windows.
// Test that passes splitting multiple declarations and comma operators are correctly ordered.
TEST_P(GLSLTest_ES3, MultipleDeclarationWithCommaOperator)
{
constexpr char kFS[] = R"(#version 300 es
precision mediump float;
out vec4 color;
uniform float u;
float c = 0.0;
float sideEffect()
{
c = u;
return c;
}
void main(void)
{
float a = 0.0, b = ((gl_FragCoord.x < 0.5 ? a : sideEffect()), a);
color = vec4(b + c);
})";
ANGLE_GL_PROGRAM(program, essl3_shaders::vs::Simple(), kFS);
}
// Test that passes splitting multiple declarations and comma operators and for loops are
// correctly ordered.
TEST_P(GLSLTest_ES3, MultipleDeclarationWithCommaOperatorInForLoop)
{
constexpr char kFS[] = R"(#version 300 es
precision mediump float;
out vec4 color;
uniform float u;
float c = 0.0;
float sideEffect()
{
c = u;
return c;
}
void main(void)
{
for(float a = 0.0, b = ((gl_FragCoord.x < 0.5 ? a : sideEffect()), a); a < 10.0; a++)
{
b += 1.0;
color = vec4(b);
}
})";
ANGLE_GL_PROGRAM(program, essl3_shaders::vs::Simple(), kFS);
}
// Test that splitting multiple declaration in for loops works with no loop condition
TEST_P(GLSLTest_ES3, MultipleDeclarationInForLoopEmptyCondition)
{
constexpr char kFS[] =
"#version 300 es\n"
"precision mediump float;\n"
"out vec4 color;\n"
"void main(void)\n"
"{\n"
" for(float a = 0.0, b = 1.0;; a++)\n"
" {\n"
" b += 1.0;\n"
" if (a > 10.0) {break;}\n"
" color = vec4(b);\n"
" }\n"
"}\n";
ANGLE_GL_PROGRAM(program, essl3_shaders::vs::Simple(), kFS);
}
// Test that splitting multiple declaration in for loops works with no loop expression
TEST_P(GLSLTest_ES3, MultipleDeclarationInForLoopEmptyExpression)
{
constexpr char kFS[] =
"#version 300 es\n"
"precision mediump float;\n"
"out vec4 color;\n"
"void main(void)\n"
"{\n"
" for(float a = 0.0, b = 1.0; a < 10.0;)\n"
" {\n"
" b += 1.0;\n"
" a += 1.0;\n"
" color = vec4(b);\n"
" }\n"
"}\n";
ANGLE_GL_PROGRAM(program, essl3_shaders::vs::Simple(), kFS);
}
// Test that dynamic indexing of a matrix inside a dynamic indexing of a vector in an l-value works
// correctly.
TEST_P(GLSLTest_ES3, NestedDynamicIndexingInLValue)
{
constexpr char kFS[] =
"#version 300 es\n"
"precision mediump float;\n"
"out vec4 my_FragColor;\n"
"uniform int u_zero;\n"
"void main() {\n"
" mat2 m = mat2(0.0, 0.0, 0.0, 0.0);\n"
" m[u_zero + 1][u_zero + 1] = float(u_zero + 1);\n"
" float f = m[1][1];\n"
" my_FragColor = vec4(1.0 - f, f, 0.0, 1.0);\n"
"}\n";
ANGLE_GL_PROGRAM(program, essl3_shaders::vs::Simple(), kFS);
drawQuad(program.get(), essl3_shaders::PositionAttrib(), 0.5f);
EXPECT_PIXEL_COLOR_EQ(0, 0, GLColor::green);
}
class WebGLGLSLTest : public GLSLTest
{
protected:
WebGLGLSLTest() { setWebGLCompatibilityEnabled(true); }
};
TEST_P(WebGLGLSLTest, MaxVaryingVec4PlusFragCoord)
{
GLint maxVaryings = 0;
glGetIntegerv(GL_MAX_VARYING_VECTORS, &maxVaryings);
// Generate shader code that uses gl_FragCoord, a special fragment shader variables.
// This test should fail, since we are really using (maxVaryings + 1) varyings.
VaryingTestBase(0, 0, 0, 0, 0, 0, maxVaryings, 0, true, false, false, false);
}
TEST_P(WebGLGLSLTest, MaxVaryingVec4PlusPointCoord)
{
GLint maxVaryings = 0;
glGetIntegerv(GL_MAX_VARYING_VECTORS, &maxVaryings);
// Generate shader code that uses gl_FragCoord, a special fragment shader variables.
// This test should fail, since we are really using (maxVaryings + 1) varyings.
VaryingTestBase(0, 0, 0, 0, 0, 0, maxVaryings, 0, false, true, false, false);
}
TEST_P(WebGLGLSLTest, MaxPlusOneVaryingVec3)
{
GLint maxVaryings = 0;
glGetIntegerv(GL_MAX_VARYING_VECTORS, &maxVaryings);
VaryingTestBase(0, 0, 0, 0, maxVaryings + 1, 0, 0, 0, false, false, false, false);
}
TEST_P(WebGLGLSLTest, MaxPlusOneVaryingVec3Array)
{
GLint maxVaryings = 0;
glGetIntegerv(GL_MAX_VARYING_VECTORS, &maxVaryings);
VaryingTestBase(0, 0, 0, 0, 0, maxVaryings / 2 + 1, 0, 0, false, false, false, false);
}
TEST_P(WebGLGLSLTest, MaxVaryingVec3AndOneVec2)
{
GLint maxVaryings = 0;
glGetIntegerv(GL_MAX_VARYING_VECTORS, &maxVaryings);
VaryingTestBase(0, 0, 1, 0, maxVaryings, 0, 0, 0, false, false, false, false);
}
TEST_P(WebGLGLSLTest, MaxPlusOneVaryingVec2)
{
GLint maxVaryings = 0;
glGetIntegerv(GL_MAX_VARYING_VECTORS, &maxVaryings);
VaryingTestBase(0, 0, 2 * maxVaryings + 1, 0, 0, 0, 0, 0, false, false, false, false);
}
TEST_P(WebGLGLSLTest, MaxVaryingVec3ArrayAndMaxPlusOneFloatArray)
{
GLint maxVaryings = 0;
glGetIntegerv(GL_MAX_VARYING_VECTORS, &maxVaryings);
VaryingTestBase(0, maxVaryings / 2 + 1, 0, 0, 0, 0, 0, maxVaryings / 2, false, false, false,
false);
}
// Test that FindLSB and FindMSB return correct values in their corner cases.
TEST_P(GLSLTest_ES31, FindMSBAndFindLSBCornerCases)
{
// Suspecting AMD driver bug - failure seen on bots running on AMD R5 230.
ANGLE_SKIP_TEST_IF(IsAMD() && IsOpenGL() && IsLinux());
// Failing on N5X Oreo http://anglebug.com/2304
ANGLE_SKIP_TEST_IF(IsAndroid() && IsAdreno() && IsOpenGLES());
constexpr char kFS[] =
"#version 310 es\n"
"precision mediump float;\n"
"out vec4 my_FragColor;\n"
"uniform int u_zero;\n"
"void main() {\n"
" if (findLSB(u_zero) == -1 && findMSB(u_zero) == -1 && findMSB(u_zero - 1) == -1)\n"
" {\n"
" my_FragColor = vec4(0.0, 1.0, 0.0, 1.0);\n"
" }\n"
" else\n"
" {\n"
" my_FragColor = vec4(1.0, 0.0, 0.0, 1.0);\n"
" }\n"
"}\n";
ANGLE_GL_PROGRAM(program, essl31_shaders::vs::Simple(), kFS);
drawQuad(program.get(), essl31_shaders::PositionAttrib(), 0.5f);
EXPECT_PIXEL_COLOR_EQ(0, 0, GLColor::green);
}
// Test that writing into a swizzled vector that is dynamically indexed succeeds.
TEST_P(GLSLTest_ES3, WriteIntoDynamicIndexingOfSwizzledVector)
{
// http://anglebug.com/1924
ANGLE_SKIP_TEST_IF(IsOpenGL());
// The shader first assigns v.x to v.z (1.0)
// Then v.y to v.y (2.0)
// Then v.z to v.x (1.0)
constexpr char kFS[] =
"#version 300 es\n"
"precision highp float;\n"
"out vec4 my_FragColor;\n"
"void main() {\n"
" vec3 v = vec3(1.0, 2.0, 3.0);\n"
" for (int i = 0; i < 3; i++) {\n"
" v.zyx[i] = v[i];\n"
" }\n"
" my_FragColor = distance(v, vec3(1.0, 2.0, 1.0)) < 0.01 ? vec4(0, 1, 0, 1) : vec4(1, "
"0, 0, 1);\n"
"}\n";
ANGLE_GL_PROGRAM(program, essl3_shaders::vs::Simple(), kFS);
drawQuad(program.get(), essl3_shaders::PositionAttrib(), 0.5f);
EXPECT_PIXEL_COLOR_EQ(0, 0, GLColor::green);
}
// Test that the length() method is correctly translated in Vulkan atomic counter buffer emulation.
TEST_P(GLSLTest_ES31, AtomicCounterArrayLength)
{
// Crashes on an assertion. The driver reports no atomic counter buffers when queried from the
// program, but ANGLE believes there to be one.
//
// This is likely due to the fact that ANGLE generates the following code, as a side effect of
// the code on which .length() is being called:
//
// _uac1[(_uvalue = _utestSideEffectValue)];
//
// The driver is optimizing the subscription out, and calling the atomic counter inactive. This
// was observed on nvidia, mesa and amd/windows.
//
// The fix would be for ANGLE to skip uniforms it believes should exist, but when queried, the
// driver says don't.
//
// http://anglebug.com/3782
ANGLE_SKIP_TEST_IF(IsOpenGL());
// Skipping due to a bug on the Qualcomm Vulkan Android driver.
// http://anglebug.com/3726
ANGLE_SKIP_TEST_IF(IsAndroid() && IsVulkan());
constexpr char kCS[] = R"(#version 310 es
precision mediump float;
layout(local_size_x=1) in;
layout(binding = 0) uniform atomic_uint ac1[2][3];
uniform uint testSideEffectValue;
layout(binding = 1, std140) buffer Result
{
uint value;
} result;
void main() {
bool passed = true;
if (ac1.length() != 2)
{
passed = false;
}
uint value = 0u;
if (ac1[(value = testSideEffectValue)].length() != 3)
{
passed = false;
}
if (value != testSideEffectValue)
{
passed = false;
}
result.value = passed ? 255u : 127u;
})";
constexpr unsigned int kUniformTestValue = 17;
constexpr unsigned int kExpectedSuccessValue = 255;
constexpr unsigned int kAtomicCounterRows = 2;
constexpr unsigned int kAtomicCounterCols = 3;
GLint maxAtomicCounters = 0;
glGetIntegerv(GL_MAX_COMPUTE_ATOMIC_COUNTERS, &maxAtomicCounters);
EXPECT_GL_NO_ERROR();
// Required minimum is 8 by the spec
EXPECT_GE(maxAtomicCounters, 8);
ANGLE_SKIP_TEST_IF(static_cast<uint32_t>(maxAtomicCounters) <
kAtomicCounterRows * kAtomicCounterCols);
ANGLE_GL_COMPUTE_PROGRAM(program, kCS);
glUseProgram(program.get());
constexpr unsigned int kBufferData[kAtomicCounterRows * kAtomicCounterCols] = {};
GLBuffer atomicCounterBuffer;
glBindBuffer(GL_ATOMIC_COUNTER_BUFFER, atomicCounterBuffer);
glBufferData(GL_ATOMIC_COUNTER_BUFFER, sizeof(kBufferData), kBufferData, GL_STATIC_DRAW);
glBindBufferBase(GL_ATOMIC_COUNTER_BUFFER, 0, atomicCounterBuffer);
constexpr unsigned int kOutputInitValue = 0;
GLBuffer shaderStorageBuffer;
glBindBuffer(GL_SHADER_STORAGE_BUFFER, shaderStorageBuffer);
glBufferData(GL_SHADER_STORAGE_BUFFER, sizeof(kOutputInitValue), &kOutputInitValue,
GL_STATIC_DRAW);
glBindBufferBase(GL_SHADER_STORAGE_BUFFER, 1, shaderStorageBuffer);
GLint uniformLocation = glGetUniformLocation(program.get(), "testSideEffectValue");
EXPECT_NE(uniformLocation, -1);
glUniform1i(uniformLocation, kUniformTestValue);
glDispatchCompute(1, 1, 1);
glMemoryBarrier(GL_BUFFER_UPDATE_BARRIER_BIT);
const GLuint *ptr = reinterpret_cast<const GLuint *>(
glMapBufferRange(GL_SHADER_STORAGE_BUFFER, 0, sizeof(GLuint), GL_MAP_READ_BIT));
EXPECT_EQ(*ptr, kExpectedSuccessValue);
glUnmapBuffer(GL_SHADER_STORAGE_BUFFER);
}
// Test that array indices for arrays of arrays of basic types work as expected.
TEST_P(GLSLTest_ES31, ArraysOfArraysBasicType)
{
constexpr char kFS[] =
"#version 310 es\n"
"precision mediump float;\n"
"out vec4 my_FragColor;\n"
"uniform ivec2 test[2][2];\n"
"void main() {\n"
" bool passed = true;\n"
" for (int i = 0; i < 2; i++) {\n"
" for (int j = 0; j < 2; j++) {\n"
" if (test[i][j] != ivec2(i + 1, j + 1)) {\n"
" passed = false;\n"
" }\n"
" }\n"
" }\n"
" my_FragColor = passed ? vec4(0.0, 1.0, 0.0, 1.0) : vec4(1.0, 0.0, 0.0, 1.0);\n"
"}\n";
ANGLE_GL_PROGRAM(program, essl31_shaders::vs::Simple(), kFS);
glUseProgram(program.get());
for (int i = 0; i < 2; i++)
{
for (int j = 0; j < 2; j++)
{
std::stringstream uniformName;
uniformName << "test[" << i << "][" << j << "]";
GLint uniformLocation = glGetUniformLocation(program.get(), uniformName.str().c_str());
// All array indices should be used.
EXPECT_NE(uniformLocation, -1);
glUniform2i(uniformLocation, i + 1, j + 1);
}
}
drawQuad(program.get(), essl31_shaders::PositionAttrib(), 0.5f);
EXPECT_PIXEL_COLOR_EQ(0, 0, GLColor::green);
}
// Test that array indices for arrays of arrays of basic types work as expected
// inside blocks.
TEST_P(GLSLTest_ES31, ArraysOfArraysBlockBasicType)
{
// anglebug.com/3821 - fails on AMD Windows
ANGLE_SKIP_TEST_IF(IsWindows() && IsAMD() && IsOpenGL());
constexpr char kFS[] =
"#version 310 es\n"
"precision mediump float;\n"
"out vec4 my_FragColor;\n"
"layout(packed) uniform UBO { ivec2 test[2][2]; } ubo_data;\n"
"void main() {\n"
" bool passed = true;\n"
" for (int i = 0; i < 2; i++) {\n"
" for (int j = 0; j < 2; j++) {\n"
" if (ubo_data.test[i][j] != ivec2(i + 1, j + 1)) {\n"
" passed = false;\n"
" }\n"
" }\n"
" }\n"
" my_FragColor = passed ? vec4(0.0, 1.0, 0.0, 1.0) : vec4(1.0, 0.0, 0.0, 1.0);\n"
"}\n";
ANGLE_GL_PROGRAM(program, essl31_shaders::vs::Simple(), kFS);
glUseProgram(program.get());
// Use interface queries to determine buffer size and offset
GLuint uboBlockIndex = glGetProgramResourceIndex(program.get(), GL_UNIFORM_BLOCK, "UBO");
GLenum uboDataSizeProp = GL_BUFFER_DATA_SIZE;
GLint uboDataSize;
glGetProgramResourceiv(program.get(), GL_UNIFORM_BLOCK, uboBlockIndex, 1, &uboDataSizeProp, 1,
nullptr, &uboDataSize);
std::unique_ptr<char[]> uboData(new char[uboDataSize]);
for (int i = 0; i < 2; i++)
{
std::stringstream resourceName;
resourceName << "UBO.test[" << i << "][0]";
GLenum resourceProps[] = {GL_ARRAY_STRIDE, GL_OFFSET};
struct
{
GLint stride;
GLint offset;
} values;
GLuint resourceIndex =
glGetProgramResourceIndex(program.get(), GL_UNIFORM, resourceName.str().c_str());
ASSERT_NE(resourceIndex, GL_INVALID_INDEX);
glGetProgramResourceiv(program.get(), GL_UNIFORM, resourceIndex, 2, &resourceProps[0], 2,
nullptr, &values.stride);
for (int j = 0; j < 2; j++)
{
GLint(&dataPtr)[2] =
*reinterpret_cast<GLint(*)[2]>(&uboData[values.offset + j * values.stride]);
dataPtr[0] = i + 1;
dataPtr[1] = j + 1;
}
}
GLBuffer ubo;
glBindBuffer(GL_UNIFORM_BUFFER, ubo.get());
glBufferData(GL_UNIFORM_BUFFER, uboDataSize, &uboData[0], GL_STATIC_DRAW);
GLuint ubo_index = glGetUniformBlockIndex(program.get(), "UBO");
ASSERT_NE(ubo_index, GL_INVALID_INDEX);
glUniformBlockBinding(program.get(), ubo_index, 5);
glBindBufferBase(GL_UNIFORM_BUFFER, 5, ubo.get());
drawQuad(program.get(), essl31_shaders::PositionAttrib(), 0.5f);
EXPECT_PIXEL_COLOR_EQ(0, 0, GLColor::green);
}
// Test that arrays of arrays of samplers work as expected.
TEST_P(GLSLTest_ES31, ArraysOfArraysSampler)
{
// anglebug.com/2703 - QC doesn't support arrays of samplers as parameters,
// so sampler array of array handling is disabled
ANGLE_SKIP_TEST_IF(IsAndroid() && IsVulkan());
constexpr char kFS[] =
"#version 310 es\n"
"precision mediump float;\n"
"out vec4 my_FragColor;\n"
"uniform mediump isampler2D test[2][2];\n"
"void main() {\n"
" bool passed = true;\n"
"#define DO_CHECK(i,j) \\\n"
" if (texture(test[i][j], vec2(0.0, 0.0)) != ivec4(i + 1, j + 1, 0, 1)) { \\\n"
" passed = false; \\\n"
" }\n"