Google Git
Sign in
cobalt / cobalt / b15365272e6489fad522fda39eabf582f874017d / . / src / third_party / angle / src / tests / gl_tests / WebGLCompatibilityTest.cpp
blob: 71f91fed19c56f3f6f8a29a721fdd1bc0a936d98 [file] [log] [blame]
//
// 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.
//
// WebGLCompatibilityTest.cpp : Tests of the GL_ANGLE_webgl_compatibility extension.
#include "test_utils/ANGLETest.h"
#include "common/mathutil.h"
#include "test_utils/gl_raii.h"
namespace
{
bool ConstantColorAndAlphaBlendFunctions(GLenum first, GLenum second)
{
return (first == GL_CONSTANT_COLOR || first == GL_ONE_MINUS_CONSTANT_COLOR) &&
(second == GL_CONSTANT_ALPHA || second == GL_ONE_MINUS_CONSTANT_ALPHA);
}
void CheckBlendFunctions(GLenum src, GLenum dst)
{
if (ConstantColorAndAlphaBlendFunctions(src, dst) ||
ConstantColorAndAlphaBlendFunctions(dst, src))
{
EXPECT_GL_ERROR(GL_INVALID_OPERATION);
}
else
{
ASSERT_GL_NO_ERROR();
}
}
// Extensions that affect the ability to use floating point textures
constexpr const char *FloatingPointTextureExtensions[] = {
"",
"GL_EXT_texture_storage",
"GL_OES_texture_float",
"GL_OES_texture_float_linear",
"GL_OES_texture_half_float",
"GL_OES_texture_half_float_linear",
"GL_EXT_color_buffer_half_float",
"GL_EXT_color_buffer_float",
"GL_CHROMIUM_color_buffer_float_rgba",
"GL_CHROMIUM_color_buffer_float_rgb",
};
} // namespace
namespace angle
{
class WebGLCompatibilityTest : public ANGLETest
{
protected:
WebGLCompatibilityTest()
{
setWindowWidth(128);
setWindowHeight(128);
setConfigRedBits(8);
setConfigGreenBits(8);
setConfigBlueBits(8);
setConfigAlphaBits(8);
setWebGLCompatibilityEnabled(true);
}
void SetUp() override
{
ANGLETest::SetUp();
glRequestExtensionANGLE = reinterpret_cast<PFNGLREQUESTEXTENSIONANGLEPROC>(
eglGetProcAddress("glRequestExtensionANGLE"));
}
template <typename T>
void TestFloatTextureFormat(GLenum internalFormat,
GLenum format,
GLenum type,
bool texturingEnabled,
bool linearSamplingEnabled,
bool renderingEnabled,
const T textureData[4],
const float floatData[4])
{
ASSERT_GL_NO_ERROR();
const std::string samplingVs =
"attribute vec4 position;\n"
"varying vec2 texcoord;\n"
"void main()\n"
"{\n"
" gl_Position = vec4(position.xy, 0.0, 1.0);\n"
" texcoord = (position.xy * 0.5) + 0.5;\n"
"}\n";
const std::string samplingFs =
"precision mediump float;\n"
"uniform sampler2D tex;\n"
"uniform vec4 subtractor;\n"
"varying vec2 texcoord;\n"
"void main()\n"
"{\n"
" vec4 color = texture2D(tex, texcoord);\n"
" if (abs(color.r - subtractor.r) +\n"
" abs(color.g - subtractor.g) +\n"
" abs(color.b - subtractor.b) +\n"
" abs(color.a - subtractor.a) < 8.0)\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";
ANGLE_GL_PROGRAM(samplingProgram, samplingVs, samplingFs);
glUseProgram(samplingProgram.get());
GLRenderbuffer rbo;
glBindRenderbuffer(GL_RENDERBUFFER, rbo.get());
glRenderbufferStorage(GL_RENDERBUFFER, GL_RGBA8, 1, 1);
GLFramebuffer fbo;
glBindFramebuffer(GL_FRAMEBUFFER, fbo.get());
glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_RENDERBUFFER, rbo.get());
GLTexture texture;
glBindTexture(GL_TEXTURE_2D, texture.get());
if (internalFormat == format)
{
glTexImage2D(GL_TEXTURE_2D, 0, internalFormat, 1, 1, 0, format, type, textureData);
}
else
{
if (getClientMajorVersion() >= 3)
{
glTexStorage2D(GL_TEXTURE_2D, 1, internalFormat, 1, 1);
}
else
{
ASSERT_TRUE(extensionEnabled("GL_EXT_texture_storage"));
glTexStorage2DEXT(GL_TEXTURE_2D, 1, internalFormat, 1, 1);
}
glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, 1, 1, format, type, textureData);
}
if (!texturingEnabled)
{
// Depending on the entry point and client version, different errors may be generated
ASSERT_GLENUM_NE(GL_NO_ERROR, glGetError());
// Two errors may be generated in the glTexStorage + glTexSubImage case, clear the
// second error
glGetError();
return;
}
ASSERT_GL_NO_ERROR();
glUniform1i(glGetUniformLocation(samplingProgram.get(), "tex"), 0);
glUniform4fv(glGetUniformLocation(samplingProgram.get(), "subtractor"), 1, floatData);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
drawQuad(samplingProgram.get(), "position", 0.5f, 1.0f, true);
EXPECT_PIXEL_COLOR_EQ(0, 0, GLColor::green);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
drawQuad(samplingProgram.get(), "position", 0.5f, 1.0f, true);
if (linearSamplingEnabled)
{
EXPECT_PIXEL_COLOR_EQ(0, 0, GLColor::green);
}
else
{
EXPECT_PIXEL_COLOR_EQ(0, 0, GLColor::red);
}
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, texture.get(),
0);
glBindTexture(GL_TEXTURE_2D, 0);
if (!renderingEnabled)
{
EXPECT_GLENUM_EQ(GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT,
glCheckFramebufferStatus(GL_FRAMEBUFFER));
return;
}
ASSERT_GLENUM_EQ(GL_FRAMEBUFFER_COMPLETE, glCheckFramebufferStatus(GL_FRAMEBUFFER));
const std::string renderingVs =
"attribute vec4 position;\n"
"void main()\n"
"{\n"
" gl_Position = vec4(position.xy, 0.0, 1.0);\n"
"}\n";
const std::string renderingFs =
"precision mediump float;\n"
"uniform vec4 writeValue;\n"
"void main()\n"
"{\n"
" gl_FragColor = writeValue;\n"
"}\n";
ANGLE_GL_PROGRAM(renderingProgram, renderingVs, renderingFs);
glUseProgram(renderingProgram.get());
glUniform4fv(glGetUniformLocation(renderingProgram.get(), "writeValue"), 1, floatData);
drawQuad(renderingProgram.get(), "position", 0.5f, 1.0f, true);
EXPECT_PIXEL_COLOR32F_NEAR(
0, 0, GLColor32F(floatData[0], floatData[1], floatData[2], floatData[3]), 1.0f);
}
// Called from RenderingFeedbackLoopWithDrawBuffersEXT.
void drawBuffersEXTFeedbackLoop(GLuint program,
const std::array<GLenum, 2> &drawBuffers,
GLenum expectedError);
// Called from RenderingFeedbackLoopWithDrawBuffers.
void drawBuffersFeedbackLoop(GLuint program,
const std::array<GLenum, 2> &drawBuffers,
GLenum expectedError);
PFNGLREQUESTEXTENSIONANGLEPROC glRequestExtensionANGLE = nullptr;
};
class WebGL2CompatibilityTest : public WebGLCompatibilityTest
{
};
// Context creation would fail if EGL_ANGLE_create_context_webgl_compatibility was not available so
// the GL extension should always be present
TEST_P(WebGLCompatibilityTest, ExtensionStringExposed)
{
EXPECT_TRUE(extensionEnabled("GL_ANGLE_webgl_compatibility"));
}
// Verify that all extension entry points are available
TEST_P(WebGLCompatibilityTest, EntryPoints)
{
if (extensionEnabled("GL_ANGLE_request_extension"))
{
EXPECT_NE(nullptr, eglGetProcAddress("glRequestExtensionANGLE"));
}
}
// WebGL 1 allows GL_DEPTH_STENCIL_ATTACHMENT as a valid binding point. Make sure it is usable,
// even in ES2 contexts.
TEST_P(WebGLCompatibilityTest, DepthStencilBindingPoint)
{
GLRenderbuffer renderbuffer;
glBindRenderbuffer(GL_RENDERBUFFER, renderbuffer.get());
glRenderbufferStorage(GL_RENDERBUFFER, GL_DEPTH24_STENCIL8, 32, 32);
GLFramebuffer framebuffer;
glBindFramebuffer(GL_FRAMEBUFFER, framebuffer.get());
glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_DEPTH_STENCIL_ATTACHMENT, GL_RENDERBUFFER,
renderbuffer.get());
EXPECT_GL_NO_ERROR();
}
// Test that attempting to enable an extension that doesn't exist generates GL_INVALID_OPERATION
TEST_P(WebGLCompatibilityTest, EnableExtensionValidation)
{
glRequestExtensionANGLE("invalid_extension_string");
EXPECT_GL_ERROR(GL_INVALID_OPERATION);
}
// Test enabling the GL_OES_element_index_uint extension
TEST_P(WebGLCompatibilityTest, EnableExtensionUintIndices)
{
if (getClientMajorVersion() != 2)
{
// This test only works on ES2 where uint indices are not available by default
return;
}
EXPECT_FALSE(extensionEnabled("GL_OES_element_index_uint"));
GLBuffer indexBuffer;
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, indexBuffer.get());
GLuint data[] = {0, 1, 2, 1, 3, 2};
glBufferData(GL_ELEMENT_ARRAY_BUFFER, sizeof(data), data, GL_STATIC_DRAW);
ANGLE_GL_PROGRAM(program, "void main() { gl_Position = vec4(0, 0, 0, 1); }",
"void main() { gl_FragColor = vec4(0, 1, 0, 1); }")
glUseProgram(program.get());
glDrawElements(GL_TRIANGLES, 2, GL_UNSIGNED_INT, nullptr);
EXPECT_GL_ERROR(GL_INVALID_ENUM);
if (extensionRequestable("GL_OES_element_index_uint"))
{
glRequestExtensionANGLE("GL_OES_element_index_uint");
EXPECT_GL_NO_ERROR();
EXPECT_TRUE(extensionEnabled("GL_OES_element_index_uint"));
glDrawElements(GL_TRIANGLES, 2, GL_UNSIGNED_INT, nullptr);
EXPECT_GL_NO_ERROR();
}
}
// Test enabling the GL_OES_standard_derivatives extension
TEST_P(WebGLCompatibilityTest, EnableExtensionStandardDerivitives)
{
EXPECT_FALSE(extensionEnabled("GL_OES_standard_derivatives"));
const std::string source =
"#extension GL_OES_standard_derivatives : require\n"
"void main() { gl_FragColor = vec4(dFdx(vec2(1.0, 1.0)).x, 1, 0, 1); }\n";
ASSERT_EQ(0u, CompileShader(GL_FRAGMENT_SHADER, source));
if (extensionRequestable("GL_OES_standard_derivatives"))
{
glRequestExtensionANGLE("GL_OES_standard_derivatives");
EXPECT_GL_NO_ERROR();
EXPECT_TRUE(extensionEnabled("GL_OES_standard_derivatives"));
GLuint shader = CompileShader(GL_FRAGMENT_SHADER, source);
ASSERT_NE(0u, shader);
glDeleteShader(shader);
}
}
// Test enabling the GL_EXT_shader_texture_lod extension
TEST_P(WebGLCompatibilityTest, EnableExtensionTextureLOD)
{
EXPECT_FALSE(extensionEnabled("GL_EXT_shader_texture_lod"));
const std::string source =
"#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";
ASSERT_EQ(0u, CompileShader(GL_FRAGMENT_SHADER, source));
if (extensionRequestable("GL_EXT_shader_texture_lod"))
{
glRequestExtensionANGLE("GL_EXT_shader_texture_lod");
EXPECT_GL_NO_ERROR();
EXPECT_TRUE(extensionEnabled("GL_EXT_shader_texture_lod"));
GLuint shader = CompileShader(GL_FRAGMENT_SHADER, source);
ASSERT_NE(0u, shader);
glDeleteShader(shader);
}
}
// Test enabling the GL_EXT_frag_depth extension
TEST_P(WebGLCompatibilityTest, EnableExtensionFragDepth)
{
EXPECT_FALSE(extensionEnabled("GL_EXT_frag_depth"));
const std::string source =
"#extension GL_EXT_frag_depth : require\n"
"void main() {\n"
" gl_FragColor = vec4(0.0, 0.0, 0.0, 1.0);\n"
" gl_FragDepthEXT = 1.0;\n"
"}\n";
ASSERT_EQ(0u, CompileShader(GL_FRAGMENT_SHADER, source));
if (extensionRequestable("GL_EXT_frag_depth"))
{
glRequestExtensionANGLE("GL_EXT_frag_depth");
EXPECT_GL_NO_ERROR();
EXPECT_TRUE(extensionEnabled("GL_EXT_frag_depth"));
GLuint shader = CompileShader(GL_FRAGMENT_SHADER, source);
ASSERT_NE(0u, shader);
glDeleteShader(shader);
}
}
// Test enabling the GL_EXT_texture_filter_anisotropic extension
TEST_P(WebGLCompatibilityTest, EnableExtensionTextureFilterAnisotropic)
{
EXPECT_FALSE(extensionEnabled("GL_EXT_texture_filter_anisotropic"));
GLfloat maxAnisotropy = 0.0f;
glGetFloatv(GL_MAX_TEXTURE_MAX_ANISOTROPY_EXT, &maxAnisotropy);
EXPECT_GL_ERROR(GL_INVALID_ENUM);
GLTexture texture;
glBindTexture(GL_TEXTURE_2D, texture.get());
ASSERT_GL_NO_ERROR();
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAX_ANISOTROPY_EXT, 1.0f);
EXPECT_GL_ERROR(GL_INVALID_ENUM);
GLfloat currentAnisotropy = 0.0f;
glGetTexParameterfv(GL_TEXTURE_2D, GL_TEXTURE_MAX_ANISOTROPY_EXT, &currentAnisotropy);
EXPECT_GL_ERROR(GL_INVALID_ENUM);
if (extensionRequestable("GL_EXT_texture_filter_anisotropic"))
{
glRequestExtensionANGLE("GL_EXT_texture_filter_anisotropic");
EXPECT_GL_NO_ERROR();
EXPECT_TRUE(extensionEnabled("GL_EXT_texture_filter_anisotropic"));
glGetFloatv(GL_MAX_TEXTURE_MAX_ANISOTROPY_EXT, &maxAnisotropy);
ASSERT_GL_NO_ERROR();
EXPECT_GE(maxAnisotropy, 2.0f);
glGetTexParameterfv(GL_TEXTURE_2D, GL_TEXTURE_MAX_ANISOTROPY_EXT, &currentAnisotropy);
ASSERT_GL_NO_ERROR();
EXPECT_EQ(1.0f, currentAnisotropy);
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAX_ANISOTROPY_EXT, 2.0f);
ASSERT_GL_NO_ERROR();
}
}
// Verify that shaders are of a compatible spec when the extension is enabled.
TEST_P(WebGLCompatibilityTest, ExtensionCompilerSpec)
{
EXPECT_TRUE(extensionEnabled("GL_ANGLE_webgl_compatibility"));
// Use of reserved _webgl prefix should fail when the shader specification is for WebGL.
const std::string &vert =
"struct Foo {\n"
" int _webgl_bar;\n"
"};\n"
"void main()\n"
"{\n"
" Foo foo = Foo(1);\n"
"}";
// Default fragement shader.
const std::string &frag =
"void main()\n"
"{\n"
" gl_FragColor = vec4(1.0,0.0,0.0,1.0);\n"
"}";
GLuint program = CompileProgram(vert, frag);
EXPECT_EQ(0u, program);
glDeleteProgram(program);
}
// Verify that the context generates the correct error when the framebuffer attachments are
// different sizes
TEST_P(WebGLCompatibilityTest, FramebufferAttachmentSizeMissmatch)
{
GLFramebuffer fbo;
glBindFramebuffer(GL_FRAMEBUFFER, fbo);
GLTexture textures[2];
glBindTexture(GL_TEXTURE_2D, textures[0]);
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, 2, 2, 0, GL_RGBA, GL_UNSIGNED_BYTE, nullptr);
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, textures[0], 0);
ASSERT_GL_NO_ERROR();
ASSERT_GLENUM_EQ(GL_FRAMEBUFFER_COMPLETE, glCheckFramebufferStatus(GL_FRAMEBUFFER));
GLRenderbuffer renderbuffer;
glBindRenderbuffer(GL_RENDERBUFFER, renderbuffer);
glRenderbufferStorage(GL_RENDERBUFFER, GL_DEPTH_COMPONENT16, 3, 3);
glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, GL_RENDERBUFFER, renderbuffer);
ASSERT_GL_NO_ERROR();
ASSERT_GLENUM_EQ(GL_FRAMEBUFFER_INCOMPLETE_DIMENSIONS,
glCheckFramebufferStatus(GL_FRAMEBUFFER));
if (extensionRequestable("GL_EXT_draw_buffers"))
{
glRequestExtensionANGLE("GL_EXT_draw_buffers");
EXPECT_GL_NO_ERROR();
EXPECT_TRUE(extensionEnabled("GL_EXT_draw_buffers"));
glBindTexture(GL_TEXTURE_2D, textures[1]);
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, 2, 2, 0, GL_RGBA, GL_UNSIGNED_BYTE, nullptr);
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT1, GL_TEXTURE_2D, textures[1], 0);
ASSERT_GL_NO_ERROR();
ASSERT_GL_NO_ERROR();
ASSERT_GLENUM_EQ(GL_FRAMEBUFFER_INCOMPLETE_DIMENSIONS,
glCheckFramebufferStatus(GL_FRAMEBUFFER));
glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, GL_RENDERBUFFER, 0);
ASSERT_GL_NO_ERROR();
ASSERT_GLENUM_EQ(GL_FRAMEBUFFER_COMPLETE, glCheckFramebufferStatus(GL_FRAMEBUFFER));
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, 3, 3, 0, GL_RGBA, GL_UNSIGNED_BYTE, nullptr);
ASSERT_GL_NO_ERROR();
ASSERT_GLENUM_EQ(GL_FRAMEBUFFER_INCOMPLETE_DIMENSIONS,
glCheckFramebufferStatus(GL_FRAMEBUFFER));
}
}
// Test that client-side array buffers are forbidden in WebGL mode
TEST_P(WebGLCompatibilityTest, ForbidsClientSideArrayBuffer)
{
const std::string &vert =
"attribute vec3 a_pos;\n"
"void main()\n"
"{\n"
" gl_Position = vec4(a_pos, 1.0);\n"
"}\n";
const std::string &frag =
"precision highp float;\n"
"void main()\n"
"{\n"
" gl_FragColor = vec4(1.0);\n"
"}\n";
ANGLE_GL_PROGRAM(program, vert, frag);
GLint posLocation = glGetAttribLocation(program.get(), "a_pos");
ASSERT_NE(-1, posLocation);
glUseProgram(program.get());
const auto &vertices = GetQuadVertices();
glVertexAttribPointer(posLocation, 3, GL_FLOAT, GL_FALSE, 4, vertices.data());
glEnableVertexAttribArray(posLocation);
ASSERT_GL_NO_ERROR();
glDrawArrays(GL_TRIANGLES, 0, 6);
EXPECT_GL_ERROR(GL_INVALID_OPERATION);
}
// Test that client-side element array buffers are forbidden in WebGL mode
TEST_P(WebGLCompatibilityTest, ForbidsClientSideElementBuffer)
{
const std::string &vert =
"attribute vec3 a_pos;\n"
"void main()\n"
"{\n"
" gl_Position = vec4(a_pos, 1.0);\n"
"}\n";
const std::string &frag =
"precision highp float;\n"
"void main()\n"
"{\n"
" gl_FragColor = vec4(1.0);\n"
"}\n";
ANGLE_GL_PROGRAM(program, vert, frag);
GLint posLocation = glGetAttribLocation(program.get(), "a_pos");
ASSERT_NE(-1, posLocation);
glUseProgram(program.get());
const auto &vertices = GetQuadVertices();
GLBuffer vertexBuffer;
glBindBuffer(GL_ARRAY_BUFFER, vertexBuffer.get());
glBufferData(GL_ARRAY_BUFFER, sizeof(vertices[0]) * vertices.size(), vertices.data(),
GL_STATIC_DRAW);
glVertexAttribPointer(posLocation, 3, GL_FLOAT, GL_FALSE, 0, 0);
glEnableVertexAttribArray(posLocation);
ASSERT_GL_NO_ERROR();
// Use the pointer with value of 1 for indices instead of an actual pointer because WebGL also
// enforces that the top bit of indices must be 0 (i.e. offset >= 0) and would generate
// GL_INVALID_VALUE in that case. Using a null pointer gets caught by another check.
glDrawElements(GL_TRIANGLES, 6, GL_UNSIGNED_BYTE, reinterpret_cast<const void*>(intptr_t(1)));
EXPECT_GL_ERROR(GL_INVALID_OPERATION);
}
// Tests the WebGL requirement of having the same stencil mask, writemask and ref for fron and back
TEST_P(WebGLCompatibilityTest, RequiresSameStencilMaskAndRef)
{
// Run the test in an FBO to make sure we have some stencil bits.
GLRenderbuffer renderbuffer;
glBindRenderbuffer(GL_RENDERBUFFER, renderbuffer.get());
glRenderbufferStorage(GL_RENDERBUFFER, GL_DEPTH24_STENCIL8, 32, 32);
GLFramebuffer framebuffer;
glBindFramebuffer(GL_FRAMEBUFFER, framebuffer.get());
glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_DEPTH_STENCIL_ATTACHMENT, GL_RENDERBUFFER,
renderbuffer.get());
ANGLE_GL_PROGRAM(program, "void main() { gl_Position = vec4(0, 0, 0, 1); }",
"void main() { gl_FragColor = vec4(0, 1, 0, 1); }")
glUseProgram(program.get());
ASSERT_GL_NO_ERROR();
// Having ref and mask the same for front and back is valid.
glStencilMask(255);
glStencilFunc(GL_ALWAYS, 0, 255);
glDrawArrays(GL_TRIANGLES, 0, 6);
ASSERT_GL_NO_ERROR();
// Having a different front - back write mask generates an error.
glStencilMaskSeparate(GL_FRONT, 1);
glDrawArrays(GL_TRIANGLES, 0, 6);
EXPECT_GL_ERROR(GL_INVALID_OPERATION);
// Setting both write masks separately to the same value is valid.
glStencilMaskSeparate(GL_BACK, 1);
glDrawArrays(GL_TRIANGLES, 0, 6);
ASSERT_GL_NO_ERROR();
// Having a different stencil front - back mask generates an error
glStencilFuncSeparate(GL_FRONT, GL_ALWAYS, 0, 1);
glDrawArrays(GL_TRIANGLES, 0, 6);
EXPECT_GL_ERROR(GL_INVALID_OPERATION);
// Setting both masks separately to the same value is valid.
glStencilFuncSeparate(GL_BACK, GL_ALWAYS, 0, 1);
glDrawArrays(GL_TRIANGLES, 0, 6);
ASSERT_GL_NO_ERROR();
// Having a different stencil front - back reference generates an error
glStencilFuncSeparate(GL_FRONT, GL_ALWAYS, 255, 1);
glDrawArrays(GL_TRIANGLES, 0, 6);
EXPECT_GL_ERROR(GL_INVALID_OPERATION);
// Setting both references separately to the same value is valid.
glStencilFuncSeparate(GL_BACK, GL_ALWAYS, 255, 1);
glDrawArrays(GL_TRIANGLES, 0, 6);
ASSERT_GL_NO_ERROR();
// Using different stencil funcs, everything being equal is valid.
glStencilFuncSeparate(GL_BACK, GL_NEVER, 255, 1);
glDrawArrays(GL_TRIANGLES, 0, 6);
ASSERT_GL_NO_ERROR();
}
// Test that GL_FIXED is forbidden
TEST_P(WebGLCompatibilityTest, ForbidsGLFixed)
{
GLBuffer buffer;
glBindBuffer(GL_ARRAY_BUFFER, buffer.get());
glBufferData(GL_ARRAY_BUFFER, 16, nullptr, GL_STATIC_DRAW);
glVertexAttribPointer(0, 1, GL_FLOAT, GL_FALSE, 0, nullptr);
ASSERT_GL_NO_ERROR();
glVertexAttribPointer(0, 1, GL_FIXED, GL_FALSE, 0, nullptr);
EXPECT_GL_ERROR(GL_INVALID_ENUM);
}
// Test the WebGL limit of 255 for the attribute stride
TEST_P(WebGLCompatibilityTest, MaxStride)
{
GLBuffer buffer;
glBindBuffer(GL_ARRAY_BUFFER, buffer.get());
glBufferData(GL_ARRAY_BUFFER, 1024, nullptr, GL_STATIC_DRAW);
glVertexAttribPointer(0, 1, GL_UNSIGNED_BYTE, GL_FALSE, 255, nullptr);
ASSERT_GL_NO_ERROR();
glVertexAttribPointer(0, 1, GL_UNSIGNED_BYTE, GL_FALSE, 256, nullptr);
EXPECT_GL_ERROR(GL_INVALID_VALUE);
}
// Test the checks for OOB reads in the vertex buffers, non-instanced version
TEST_P(WebGLCompatibilityTest, DrawArraysBufferOutOfBoundsNonInstanced)
{
const std::string &vert =
"attribute float a_pos;\n"
"void main()\n"
"{\n"
" gl_Position = vec4(a_pos, a_pos, a_pos, 1.0);\n"
"}\n";
const std::string &frag =
"precision highp float;\n"
"void main()\n"
"{\n"
" gl_FragColor = vec4(1.0);\n"
"}\n";
ANGLE_GL_PROGRAM(program, vert, frag);
GLint posLocation = glGetAttribLocation(program.get(), "a_pos");
ASSERT_NE(-1, posLocation);
glUseProgram(program.get());
GLBuffer buffer;
glBindBuffer(GL_ARRAY_BUFFER, buffer.get());
glBufferData(GL_ARRAY_BUFFER, 16, nullptr, GL_STATIC_DRAW);
glEnableVertexAttribArray(posLocation);
const uint8_t* zeroOffset = nullptr;
// Test touching the last element is valid.
glVertexAttribPointer(0, 1, GL_UNSIGNED_BYTE, GL_FALSE, 0, zeroOffset + 12);
glDrawArrays(GL_POINTS, 0, 4);
ASSERT_GL_NO_ERROR();
// Test touching the last element + 1 is invalid.
glVertexAttribPointer(0, 1, GL_UNSIGNED_BYTE, GL_FALSE, 0, zeroOffset + 13);
glDrawArrays(GL_POINTS, 0, 4);
EXPECT_GL_ERROR(GL_INVALID_OPERATION);
// Test touching the last element is valid, using a stride.
glVertexAttribPointer(0, 1, GL_UNSIGNED_BYTE, GL_FALSE, 2, zeroOffset + 9);
glDrawArrays(GL_POINTS, 0, 4);
ASSERT_GL_NO_ERROR();
// Test touching the last element + 1 is invalid, using a stride.
glVertexAttribPointer(0, 1, GL_UNSIGNED_BYTE, GL_FALSE, 2, zeroOffset + 10);
glDrawArrays(GL_POINTS, 0, 4);
EXPECT_GL_ERROR(GL_INVALID_OPERATION);
// Test any offset is valid if no vertices are drawn.
glVertexAttribPointer(0, 1, GL_UNSIGNED_BYTE, GL_FALSE, 0, zeroOffset + 32);
glDrawArrays(GL_POINTS, 0, 0);
ASSERT_GL_NO_ERROR();
}
// Test the checks for OOB reads in the index buffer
TEST_P(WebGLCompatibilityTest, DrawElementsBufferOutOfBoundsInIndexBuffer)
{
const std::string &vert =
"attribute float a_pos;\n"
"void main()\n"
"{\n"
" gl_Position = vec4(a_pos, a_pos, a_pos, 1.0);\n"
"}\n";
const std::string &frag =
"precision highp float;\n"
"void main()\n"
"{\n"
" gl_FragColor = vec4(1.0);\n"
"}\n";
ANGLE_GL_PROGRAM(program, vert, frag);
GLint posLocation = glGetAttribLocation(program.get(), "a_pos");
ASSERT_NE(-1, posLocation);
glUseProgram(program.get());
GLBuffer vertexBuffer;
glBindBuffer(GL_ARRAY_BUFFER, vertexBuffer.get());
glBufferData(GL_ARRAY_BUFFER, 16, nullptr, GL_STATIC_DRAW);
glEnableVertexAttribArray(posLocation);
const uint8_t *zeroOffset = nullptr;
const uint8_t zeroIndices[] = {0, 0, 0, 0, 0, 0, 0, 0};
glVertexAttribPointer(0, 1, GL_UNSIGNED_BYTE, GL_FALSE, 0, zeroOffset);
GLBuffer indexBuffer;
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, indexBuffer.get());
glBufferData(GL_ELEMENT_ARRAY_BUFFER, sizeof(zeroIndices), zeroIndices, GL_STATIC_DRAW);
ASSERT_GL_NO_ERROR();
// Test touching the last index is valid
glDrawElements(GL_POINTS, 4, GL_UNSIGNED_BYTE, zeroOffset + 4);
ASSERT_GL_NO_ERROR();
// Test touching the last + 1 element is invalid
glDrawElements(GL_POINTS, 4, GL_UNSIGNED_BYTE, zeroOffset + 5);
EXPECT_GL_ERROR(GL_INVALID_OPERATION);
// Test any offset if valid if count is zero
glDrawElements(GL_POINTS, 0, GL_UNSIGNED_BYTE, zeroOffset + 42);
ASSERT_GL_NO_ERROR();
// Test touching the first index is valid
glDrawElements(GL_POINTS, 4, GL_UNSIGNED_BYTE, zeroOffset + 4);
ASSERT_GL_NO_ERROR();
// Test touching the first - 1 index is invalid
// The error ha been specified to be INVALID_VALUE instead of INVALID_OPERATION because it was
// the historic behavior of WebGL implementations
glDrawElements(GL_POINTS, 4, GL_UNSIGNED_BYTE, zeroOffset - 1);
EXPECT_GL_ERROR(GL_INVALID_VALUE);
}
// Test depth range with 'near' more or less than 'far.'
TEST_P(WebGLCompatibilityTest, DepthRange)
{
glDepthRangef(0, 1);
ASSERT_GL_NO_ERROR();
glDepthRangef(.5, .5);
ASSERT_GL_NO_ERROR();
glDepthRangef(1, 0);
EXPECT_GL_ERROR(GL_INVALID_OPERATION);
}
// Test all blend function combinations.
// In WebGL it is invalid to combine constant color with constant alpha.
TEST_P(WebGLCompatibilityTest, BlendWithConstantColor)
{
constexpr GLenum srcFunc[] = {
GL_ZERO,
GL_ONE,
GL_SRC_COLOR,
GL_ONE_MINUS_SRC_COLOR,
GL_DST_COLOR,
GL_ONE_MINUS_DST_COLOR,
GL_SRC_ALPHA,
GL_ONE_MINUS_SRC_ALPHA,
GL_DST_ALPHA,
GL_ONE_MINUS_DST_ALPHA,
GL_CONSTANT_COLOR,
GL_ONE_MINUS_CONSTANT_COLOR,
GL_CONSTANT_ALPHA,
GL_ONE_MINUS_CONSTANT_ALPHA,
GL_SRC_ALPHA_SATURATE,
};
constexpr GLenum dstFunc[] = {
GL_ZERO, GL_ONE,
GL_SRC_COLOR, GL_ONE_MINUS_SRC_COLOR,
GL_DST_COLOR, GL_ONE_MINUS_DST_COLOR,
GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA,
GL_DST_ALPHA, GL_ONE_MINUS_DST_ALPHA,
GL_CONSTANT_COLOR, GL_ONE_MINUS_CONSTANT_COLOR,
GL_CONSTANT_ALPHA, GL_ONE_MINUS_CONSTANT_ALPHA,
};
for (GLenum src : srcFunc)
{
for (GLenum dst : dstFunc)
{
glBlendFunc(src, dst);
CheckBlendFunctions(src, dst);
glBlendFuncSeparate(src, dst, GL_ONE, GL_ONE);
CheckBlendFunctions(src, dst);
}
}
}
// Test the checks for OOB reads in the vertex buffers, instanced version
TEST_P(WebGL2CompatibilityTest, DrawArraysBufferOutOfBoundsInstanced)
{
const std::string &vert =
"attribute float a_pos;\n"
"attribute float a_w;\n"
"void main()\n"
"{\n"
" gl_Position = vec4(a_pos, a_pos, a_pos, a_w);\n"
"}\n";
const std::string &frag =
"precision highp float;\n"
"void main()\n"
"{\n"
" gl_FragColor = vec4(1.0);\n"
"}\n";
ANGLE_GL_PROGRAM(program, vert, frag);
GLint posLocation = glGetAttribLocation(program.get(), "a_pos");
ASSERT_NE(-1, posLocation);
GLint wLocation = glGetAttribLocation(program.get(), "a_w");
ASSERT_NE(-1, wLocation);
glUseProgram(program.get());
GLBuffer buffer;
glBindBuffer(GL_ARRAY_BUFFER, buffer.get());
glBufferData(GL_ARRAY_BUFFER, 16, nullptr, GL_STATIC_DRAW);
glEnableVertexAttribArray(posLocation);
glVertexAttribDivisor(posLocation, 1);
glEnableVertexAttribArray(wLocation);
glVertexAttribPointer(wLocation, 1, GL_UNSIGNED_BYTE, GL_FALSE, 0, 0);
glVertexAttribDivisor(wLocation, 0);
const uint8_t* zeroOffset = nullptr;
// Test touching the last element is valid.
glVertexAttribPointer(0, 1, GL_UNSIGNED_BYTE, GL_FALSE, 0, zeroOffset + 12);
glDrawArraysInstanced(GL_POINTS, 0, 1, 4);
ASSERT_GL_NO_ERROR();
// Test touching the last element + 1 is invalid.
glVertexAttribPointer(0, 1, GL_UNSIGNED_BYTE, GL_FALSE, 0, zeroOffset + 13);
glDrawArraysInstanced(GL_POINTS, 0, 1, 4);
EXPECT_GL_ERROR(GL_INVALID_OPERATION);
// Test touching the last element is valid, using a stride.
glVertexAttribPointer(0, 1, GL_UNSIGNED_BYTE, GL_FALSE, 2, zeroOffset + 9);
glDrawArraysInstanced(GL_POINTS, 0, 1, 4);
ASSERT_GL_NO_ERROR();
// Test touching the last element + 1 is invalid, using a stride.
glVertexAttribPointer(0, 1, GL_UNSIGNED_BYTE, GL_FALSE, 2, zeroOffset + 10);
glDrawArraysInstanced(GL_POINTS, 0, 1, 4);
EXPECT_GL_ERROR(GL_INVALID_OPERATION);
// Test any offset is valid if no vertices are drawn.
glVertexAttribPointer(0, 1, GL_UNSIGNED_BYTE, GL_FALSE, 0, zeroOffset + 32);
glDrawArraysInstanced(GL_POINTS, 0, 1, 0);
ASSERT_GL_NO_ERROR();
}
// Test that at least one attribute has a zero divisor for WebGL
TEST_P(WebGL2CompatibilityTest, InstancedDrawZeroDivisor)
{
const std::string &vert =
"attribute float a_pos;\n"
"void main()\n"
"{\n"
" gl_Position = vec4(a_pos, a_pos, a_pos, 1.0);\n"
"}\n";
const std::string &frag =
"precision highp float;\n"
"void main()\n"
"{\n"
" gl_FragColor = vec4(1.0);\n"
"}\n";
ANGLE_GL_PROGRAM(program, vert, frag);
GLint posLocation = glGetAttribLocation(program.get(), "a_pos");
ASSERT_NE(-1, posLocation);
glUseProgram(program.get());
GLBuffer buffer;
glBindBuffer(GL_ARRAY_BUFFER, buffer.get());
glBufferData(GL_ARRAY_BUFFER, 16, nullptr, GL_STATIC_DRAW);
glEnableVertexAttribArray(posLocation);
glVertexAttribDivisor(posLocation, 1);
// Test touching the last element is valid.
glVertexAttribPointer(0, 1, GL_UNSIGNED_BYTE, GL_FALSE, 0, nullptr);
glDrawArraysInstanced(GL_POINTS, 0, 1, 4);
ASSERT_GL_ERROR(GL_INVALID_OPERATION);
glVertexAttribDivisor(posLocation, 0);
ASSERT_GL_NO_ERROR();
}
// Tests that NPOT is not enabled by default in WebGL 1 and that it can be enabled
TEST_P(WebGLCompatibilityTest, NPOT)
{
EXPECT_FALSE(extensionEnabled("GL_OES_texture_npot"));
// Create a texture and set an NPOT mip 0, should always be acceptable.
GLTexture texture;
glBindTexture(GL_TEXTURE_2D, texture.get());
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, 10, 10, 0, GL_RGBA, GL_UNSIGNED_BYTE, nullptr);
ASSERT_GL_NO_ERROR();
// Try setting an NPOT mip 1 and verify the error if WebGL 1
glTexImage2D(GL_TEXTURE_2D, 1, GL_RGBA, 5, 5, 0, GL_RGBA, GL_UNSIGNED_BYTE, nullptr);
if (getClientMajorVersion() < 3)
{
ASSERT_GL_ERROR(GL_INVALID_VALUE);
}
else
{
ASSERT_GL_NO_ERROR();
}
if (extensionRequestable("GL_OES_texture_npot"))
{
glRequestExtensionANGLE("GL_OES_texture_npot");
ASSERT_GL_NO_ERROR();
// Try again to set NPOT mip 1
glTexImage2D(GL_TEXTURE_2D, 1, GL_RGBA, 5, 5, 0, GL_RGBA, GL_UNSIGNED_BYTE, nullptr);
ASSERT_GL_NO_ERROR();
}
}
template <typename T>
void FillTexture2D(GLuint texture,
GLsizei width,
GLsizei height,
const T &onePixelData,
GLint level,
GLint internalFormat,
GLenum format,
GLenum type)
{
std::vector<T> allPixelsData(width * height, onePixelData);
glBindTexture(GL_TEXTURE_2D, texture);
glTexImage2D(GL_TEXTURE_2D, level, internalFormat, width, height, 0, format, type,
allPixelsData.data());
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
}
// Test that unset gl_Position defaults to (0,0,0,0).
TEST_P(WebGLCompatibilityTest, DefaultPosition)
{
// Draw a quad where each vertex is red if gl_Position is (0,0,0,0) before it is set,
// and green otherwise. The center of each quadrant will be red if and only if all
// four corners are red.
const std::string vertexShader =
"attribute vec3 pos;\n"
"varying vec4 color;\n"
"void main() {\n"
" if (gl_Position == vec4(0,0,0,0)) {\n"
" color = vec4(1,0,0,1);\n"
" } else {\n"
" color = vec4(0,1,0,1);\n"
" }\n"
" gl_Position = vec4(pos,1);\n"
"}\n";
const std::string fragmentShader =
"precision mediump float;\n"
"varying vec4 color;\n"
"void main() {\n"
" gl_FragColor = color;\n"
"}\n";
ANGLE_GL_PROGRAM(program, vertexShader, fragmentShader);
drawQuad(program.get(), "pos", 0.0f, 1.0f, true);
EXPECT_PIXEL_COLOR_EQ(getWindowWidth() * 1 / 4, getWindowHeight() * 1 / 4, GLColor::red);
EXPECT_PIXEL_COLOR_EQ(getWindowWidth() * 1 / 4, getWindowHeight() * 3 / 4, GLColor::red);
EXPECT_PIXEL_COLOR_EQ(getWindowWidth() * 3 / 4, getWindowHeight() * 1 / 4, GLColor::red);
EXPECT_PIXEL_COLOR_EQ(getWindowWidth() * 3 / 4, getWindowHeight() * 3 / 4, GLColor::red);
}
// Tests that a rendering feedback loop triggers a GL error under WebGL.
// Based on WebGL test conformance/renderbuffers/feedback-loop.html.
TEST_P(WebGLCompatibilityTest, RenderingFeedbackLoop)
{
const std::string vertexShader =
"attribute vec4 a_position;\n"
"varying vec2 v_texCoord;\n"
"void main() {\n"
" gl_Position = a_position;\n"
" v_texCoord = (a_position.xy * 0.5) + 0.5;\n"
"}\n";
const std::string fragmentShader =
"precision mediump float;\n"
"varying vec2 v_texCoord;\n"
"uniform sampler2D u_texture;\n"
"void main() {\n"
" // Shader swizzles color channels so we can tell if the draw succeeded.\n"
" gl_FragColor = texture2D(u_texture, v_texCoord).gbra;\n"
"}\n";
GLTexture texture;
FillTexture2D(texture.get(), 1, 1, GLColor::red, 0, GL_RGBA, GL_RGBA, GL_UNSIGNED_BYTE);
ASSERT_GL_NO_ERROR();
GLFramebuffer framebuffer;
glBindFramebuffer(GL_FRAMEBUFFER, framebuffer.get());
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, texture.get(), 0);
ASSERT_GLENUM_EQ(GL_FRAMEBUFFER_COMPLETE, glCheckFramebufferStatus(GL_FRAMEBUFFER));
ANGLE_GL_PROGRAM(program, vertexShader, fragmentShader);
GLint uniformLoc = glGetUniformLocation(program.get(), "u_texture");
ASSERT_NE(-1, uniformLoc);
glUseProgram(program.get());
glUniform1i(uniformLoc, 0);
glDisable(GL_BLEND);
glDisable(GL_DEPTH_TEST);
ASSERT_GL_NO_ERROR();
// Drawing with a texture that is also bound to the current framebuffer should fail
glBindTexture(GL_TEXTURE_2D, texture.get());
drawQuad(program.get(), "a_position", 0.5f, 1.0f, true);
EXPECT_GL_ERROR(GL_INVALID_OPERATION);
// Ensure that the texture contents did not change after the previous render
glBindFramebuffer(GL_FRAMEBUFFER, 0);
drawQuad(program.get(), "a_position", 0.5f, 1.0f, true);
ASSERT_GL_NO_ERROR();
EXPECT_PIXEL_COLOR_EQ(0, 0, GLColor::blue);
// Drawing when texture is bound to an inactive uniform should succeed
GLTexture texture2;
FillTexture2D(texture2.get(), 1, 1, GLColor::green, 0, GL_RGBA, GL_RGBA, GL_UNSIGNED_BYTE);
glBindFramebuffer(GL_FRAMEBUFFER, framebuffer.get());
glActiveTexture(GL_TEXTURE1);
glBindTexture(GL_TEXTURE_2D, texture.get());
drawQuad(program.get(), "a_position", 0.5f, 1.0f, true);
ASSERT_GL_NO_ERROR();
EXPECT_PIXEL_COLOR_EQ(0, 0, GLColor::red);
}
// Test for the max draw buffers and color attachments.
TEST_P(WebGLCompatibilityTest, MaxDrawBuffersAttachmentPoints)
{
// This test only applies to ES2.
if (getClientMajorVersion() != 2)
{
return;
}
GLFramebuffer fbo[2];
glBindFramebuffer(GL_FRAMEBUFFER, fbo[0].get());
// Test that is valid when we bind with a single attachment point.
GLTexture texture;
glBindTexture(GL_TEXTURE_2D, texture.get());
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, 1, 1, 0, GL_RGBA, GL_UNSIGNED_BYTE, nullptr);
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, texture.get(), 0);
ASSERT_GL_NO_ERROR();
// Test that enabling the draw buffers extension will allow us to bind with a non-zero
// attachment point.
if (extensionRequestable("GL_EXT_draw_buffers"))
{
glRequestExtensionANGLE("GL_EXT_draw_buffers");
EXPECT_GL_NO_ERROR();
EXPECT_TRUE(extensionEnabled("GL_EXT_draw_buffers"));
glBindFramebuffer(GL_FRAMEBUFFER, fbo[1].get());
GLTexture texture2;
glBindTexture(GL_TEXTURE_2D, texture2.get());
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, 1, 1, 0, GL_RGBA, GL_UNSIGNED_BYTE, nullptr);
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT1, GL_TEXTURE_2D, texture2.get(),
0);
ASSERT_GL_NO_ERROR();
}
}
// Test that the offset in the index buffer is forced to be a multiple of the element size
TEST_P(WebGLCompatibilityTest, DrawElementsOffsetRestriction)
{
const std::string &vert =
"attribute vec3 a_pos;\n"
"void main()\n"
"{\n"
" gl_Position = vec4(a_pos, 1.0);\n"
"}\n";
const std::string &frag =
"precision highp float;\n"
"void main()\n"
"{\n"
" gl_FragColor = vec4(1.0);\n"
"}\n";
ANGLE_GL_PROGRAM(program, vert, frag);
GLint posLocation = glGetAttribLocation(program.get(), "a_pos");
ASSERT_NE(-1, posLocation);
glUseProgram(program.get());
const auto &vertices = GetQuadVertices();
GLBuffer vertexBuffer;
glBindBuffer(GL_ARRAY_BUFFER, vertexBuffer.get());
glBufferData(GL_ARRAY_BUFFER, sizeof(vertices[0]) * vertices.size(), vertices.data(),
GL_STATIC_DRAW);
glVertexAttribPointer(posLocation, 3, GL_FLOAT, GL_FALSE, 0, 0);
glEnableVertexAttribArray(posLocation);
GLBuffer indexBuffer;
const GLubyte indices[] = {0, 0, 0, 0, 0, 0, 0};
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, indexBuffer.get());
glBufferData(GL_ELEMENT_ARRAY_BUFFER, sizeof(indices), indices, GL_STATIC_DRAW);
ASSERT_GL_NO_ERROR();
const char *zeroIndices = nullptr;
glDrawElements(GL_TRIANGLES, 6, GL_UNSIGNED_BYTE, zeroIndices);
ASSERT_GL_NO_ERROR();
glDrawElements(GL_TRIANGLES, 3, GL_UNSIGNED_SHORT, zeroIndices);
ASSERT_GL_NO_ERROR();
glDrawElements(GL_TRIANGLES, 3, GL_UNSIGNED_SHORT, zeroIndices + 1);
EXPECT_GL_ERROR(GL_INVALID_OPERATION);
}
// Test that the offset and stride in the vertex buffer is forced to be a multiple of the element
// size
TEST_P(WebGLCompatibilityTest, VertexAttribPointerOffsetRestriction)
{
const char *zeroOffset = nullptr;
// Base case, vector of two floats
glVertexAttribPointer(0, 2, GL_FLOAT, GL_FALSE, 0, zeroOffset);
ASSERT_GL_NO_ERROR();
// Test setting a non-multiple offset
glVertexAttribPointer(0, 2, GL_FLOAT, GL_FALSE, 0, zeroOffset + 1);
EXPECT_GL_ERROR(GL_INVALID_OPERATION);
glVertexAttribPointer(0, 2, GL_FLOAT, GL_FALSE, 0, zeroOffset + 2);
EXPECT_GL_ERROR(GL_INVALID_OPERATION);
glVertexAttribPointer(0, 2, GL_FLOAT, GL_FALSE, 0, zeroOffset + 3);
EXPECT_GL_ERROR(GL_INVALID_OPERATION);
// Test setting a non-multiple stride
glVertexAttribPointer(0, 2, GL_FLOAT, GL_FALSE, 1, zeroOffset);
EXPECT_GL_ERROR(GL_INVALID_OPERATION);
glVertexAttribPointer(0, 2, GL_FLOAT, GL_FALSE, 2, zeroOffset);
EXPECT_GL_ERROR(GL_INVALID_OPERATION);
glVertexAttribPointer(0, 2, GL_FLOAT, GL_FALSE, 3, zeroOffset);
EXPECT_GL_ERROR(GL_INVALID_OPERATION);
}
void WebGLCompatibilityTest::drawBuffersEXTFeedbackLoop(GLuint program,
const std::array<GLenum, 2> &drawBuffers,
GLenum expectedError)
{
glDrawBuffersEXT(2, drawBuffers.data());
// Make sure framebuffer is complete before feedback loop detection
ASSERT_GLENUM_EQ(GL_FRAMEBUFFER_COMPLETE, glCheckFramebufferStatus(GL_FRAMEBUFFER));
drawQuad(program, "aPosition", 0.5f, 1.0f, true);
// "Rendering to a texture where it samples from should geneates INVALID_OPERATION. Otherwise,
// it should be NO_ERROR"
EXPECT_GL_ERROR(expectedError);
}
// This tests that rendering feedback loops works as expected with GL_EXT_draw_buffers.
// Based on WebGL test conformance/extensions/webgl-draw-buffers-feedback-loop.html
TEST_P(WebGLCompatibilityTest, RenderingFeedbackLoopWithDrawBuffersEXT)
{
const std::string vertexShader =
"attribute vec4 aPosition;\n"
"varying vec2 texCoord;\n"
"void main() {\n"
" gl_Position = aPosition;\n"
" texCoord = (aPosition.xy * 0.5) + 0.5;\n"
"}\n";
const std::string fragmentShader =
"#extension GL_EXT_draw_buffers : require\n"
"precision mediump float;\n"
"uniform sampler2D tex;\n"
"varying vec2 texCoord;\n"
"void main() {\n"
" gl_FragData[0] = texture2D(tex, texCoord);\n"
" gl_FragData[1] = texture2D(tex, texCoord);\n"
"}\n";
GLsizei width = 8;
GLsizei height = 8;
// This shader cannot be run in ES3, because WebGL 2 does not expose the draw buffers
// extension and gl_FragData semantics are changed to enforce indexing by zero always.
// TODO(jmadill): This extension should be disabled in WebGL 2 contexts.
if (/*!extensionEnabled("GL_EXT_draw_buffers")*/ getClientMajorVersion() != 2)
{
// No WEBGL_draw_buffers support -- this is legal.
return;
}
GLint maxDrawBuffers = 0;
glGetIntegerv(GL_MAX_DRAW_BUFFERS, &maxDrawBuffers);
if (maxDrawBuffers < 2)
{
std::cout << "Test skipped because MAX_DRAW_BUFFERS is too small." << std::endl;
return;
}
ANGLE_GL_PROGRAM(program, vertexShader, fragmentShader);
glUseProgram(program.get());
glViewport(0, 0, width, height);
GLTexture tex0;
GLTexture tex1;
GLFramebuffer fbo;
FillTexture2D(tex0.get(), width, height, GLColor::red, 0, GL_RGBA, GL_RGBA, GL_UNSIGNED_BYTE);
FillTexture2D(tex1.get(), width, height, GLColor::green, 0, GL_RGBA, GL_RGBA, GL_UNSIGNED_BYTE);
ASSERT_GL_NO_ERROR();
glBindTexture(GL_TEXTURE_2D, tex1.get());
GLint texLoc = glGetUniformLocation(program.get(), "tex");
ASSERT_NE(-1, texLoc);
glUniform1i(texLoc, 0);
ASSERT_GL_NO_ERROR();
// The sampling texture is bound to COLOR_ATTACHMENT1 during resource allocation
glBindFramebuffer(GL_FRAMEBUFFER, fbo.get());
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, tex0.get(), 0);
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT1, GL_TEXTURE_2D, tex1.get(), 0);
drawBuffersEXTFeedbackLoop(program.get(), {{GL_NONE, GL_COLOR_ATTACHMENT1}},
GL_INVALID_OPERATION);
drawBuffersEXTFeedbackLoop(program.get(), {{GL_COLOR_ATTACHMENT0, GL_COLOR_ATTACHMENT1}},
GL_INVALID_OPERATION);
drawBuffersEXTFeedbackLoop(program.get(), {{GL_COLOR_ATTACHMENT0, GL_NONE}}, GL_NO_ERROR);
}
// Test tests that texture copying feedback loops are properly rejected in WebGL.
// Based on the WebGL test conformance/textures/misc/texture-copying-feedback-loops.html
TEST_P(WebGLCompatibilityTest, TextureCopyingFeedbackLoops)
{
GLTexture texture;
glBindTexture(GL_TEXTURE_2D, texture.get());
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, 2, 2, 0, GL_RGBA, GL_UNSIGNED_BYTE, nullptr);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
GLTexture texture2;
glBindTexture(GL_TEXTURE_2D, texture2.get());
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, 2, 2, 0, GL_RGBA, GL_UNSIGNED_BYTE, nullptr);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
GLFramebuffer framebuffer;
glBindFramebuffer(GL_FRAMEBUFFER, framebuffer.get());
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, texture.get(), 0);
// framebuffer should be FRAMEBUFFER_COMPLETE.
ASSERT_GLENUM_EQ(GL_FRAMEBUFFER_COMPLETE, glCheckFramebufferStatus(GL_FRAMEBUFFER));
ASSERT_GL_NO_ERROR();
// testing copyTexImage2D
// copyTexImage2D to same texture but different level
glBindTexture(GL_TEXTURE_2D, texture.get());
glCopyTexImage2D(GL_TEXTURE_2D, 1, GL_RGBA, 0, 0, 2, 2, 0);
EXPECT_GL_NO_ERROR();
// copyTexImage2D to same texture same level, invalid feedback loop
glCopyTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, 0, 0, 2, 2, 0);
EXPECT_GL_ERROR(GL_INVALID_OPERATION);
// copyTexImage2D to different texture
glBindTexture(GL_TEXTURE_2D, texture2.get());
glCopyTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, 0, 0, 2, 2, 0);
EXPECT_GL_NO_ERROR();
// testing copyTexSubImage2D
// copyTexSubImage2D to same texture but different level
glBindTexture(GL_TEXTURE_2D, texture.get());
glCopyTexSubImage2D(GL_TEXTURE_2D, 1, 0, 0, 0, 0, 1, 1);
EXPECT_GL_NO_ERROR();
// copyTexSubImage2D to same texture same level, invalid feedback loop
glCopyTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, 0, 0, 1, 1);
EXPECT_GL_ERROR(GL_INVALID_OPERATION);
// copyTexSubImage2D to different texture
glBindTexture(GL_TEXTURE_2D, texture2.get());
glCopyTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, 0, 0, 1, 1);
EXPECT_GL_NO_ERROR();
}
void WebGLCompatibilityTest::drawBuffersFeedbackLoop(GLuint program,
const std::array<GLenum, 2> &drawBuffers,
GLenum expectedError)
{
glDrawBuffers(2, drawBuffers.data());
// Make sure framebuffer is complete before feedback loop detection
ASSERT_GLENUM_EQ(GL_FRAMEBUFFER_COMPLETE, glCheckFramebufferStatus(GL_FRAMEBUFFER));
drawQuad(program, "aPosition", 0.5f, 1.0f, true);
// "Rendering to a texture where it samples from should geneates INVALID_OPERATION. Otherwise,
// it should be NO_ERROR"
EXPECT_GL_ERROR(expectedError);
}
// Tests invariance matching rules between built in varyings.
// Based on WebGL test conformance/glsl/misc/shaders-with-invariance.html.
TEST_P(WebGLCompatibilityTest, BuiltInInvariant)
{
const std::string vertexShaderVariant =
"varying vec4 v_varying;\n"
"void main()\n"
"{\n"
" gl_PointSize = 1.0;\n"
" gl_Position = v_varying;\n"
"}";
const std::string fragmentShaderInvariantGlFragCoord =
"invariant gl_FragCoord;\n"
"void main()\n"
"{\n"
" gl_FragColor = gl_FragCoord;\n"
"}";
const std::string fragmentShaderInvariantGlPointCoord =
"invariant gl_PointCoord;\n"
"void main()\n"
"{\n"
" gl_FragColor = vec4(gl_PointCoord, 0.0, 0.0);\n"
"}";
GLuint program = CompileProgram(vertexShaderVariant, fragmentShaderInvariantGlFragCoord);
EXPECT_EQ(0u, program);
program = CompileProgram(vertexShaderVariant, fragmentShaderInvariantGlPointCoord);
EXPECT_EQ(0u, program);
}
// Test dimension and image size validation of compressed textures
TEST_P(WebGLCompatibilityTest, CompressedTextureS3TC)
{
if (extensionRequestable("GL_EXT_texture_compression_dxt1"))
{
glRequestExtensionANGLE("GL_EXT_texture_compression_dxt1");
}
if (!extensionEnabled("GL_EXT_texture_compression_dxt1"))
{
std::cout << "Test skipped because GL_EXT_texture_compression_dxt1 is not available."
<< std::endl;
return;
}
constexpr uint8_t CompressedImageDXT1[] = {0x00, 0xf8, 0x00, 0xf8, 0xaa, 0xaa, 0xaa, 0xaa};
GLTexture texture;
glBindTexture(GL_TEXTURE_2D, texture);
// Regular case, verify that it works
glCompressedTexImage2D(GL_TEXTURE_2D, 0, GL_COMPRESSED_RGB_S3TC_DXT1_EXT, 4, 4, 0,
sizeof(CompressedImageDXT1), CompressedImageDXT1);
ASSERT_GL_NO_ERROR();
// Test various dimensions that are not valid
glCompressedTexImage2D(GL_TEXTURE_2D, 0, GL_COMPRESSED_RGB_S3TC_DXT1_EXT, 3, 4, 0,
sizeof(CompressedImageDXT1), CompressedImageDXT1);
ASSERT_GL_ERROR(GL_INVALID_OPERATION);
glCompressedTexImage2D(GL_TEXTURE_2D, 0, GL_COMPRESSED_RGB_S3TC_DXT1_EXT, 4, 3, 0,
sizeof(CompressedImageDXT1), CompressedImageDXT1);
ASSERT_GL_ERROR(GL_INVALID_OPERATION);
glCompressedTexImage2D(GL_TEXTURE_2D, 0, GL_COMPRESSED_RGB_S3TC_DXT1_EXT, 2, 2, 0,
sizeof(CompressedImageDXT1), CompressedImageDXT1);
ASSERT_GL_ERROR(GL_INVALID_OPERATION);
glCompressedTexImage2D(GL_TEXTURE_2D, 0, GL_COMPRESSED_RGB_S3TC_DXT1_EXT, 1, 1, 0,
sizeof(CompressedImageDXT1), CompressedImageDXT1);
ASSERT_GL_ERROR(GL_INVALID_OPERATION);
// Test various image sizes that are not valid
glCompressedTexImage2D(GL_TEXTURE_2D, 0, GL_COMPRESSED_RGB_S3TC_DXT1_EXT, 4, 4, 0,
sizeof(CompressedImageDXT1) - 1, CompressedImageDXT1);
ASSERT_GL_ERROR(GL_INVALID_VALUE);
glCompressedTexImage2D(GL_TEXTURE_2D, 0, GL_COMPRESSED_RGB_S3TC_DXT1_EXT, 4, 4, 0,
sizeof(CompressedImageDXT1) + 1, CompressedImageDXT1);
ASSERT_GL_ERROR(GL_INVALID_VALUE);
glCompressedTexImage2D(GL_TEXTURE_2D, 0, GL_COMPRESSED_RGB_S3TC_DXT1_EXT, 4, 4, 0, 0,
CompressedImageDXT1);
ASSERT_GL_ERROR(GL_INVALID_VALUE);
glCompressedTexImage2D(GL_TEXTURE_2D, 0, GL_COMPRESSED_RGB_S3TC_DXT1_EXT, 0, 0, 0,
sizeof(CompressedImageDXT1), CompressedImageDXT1);
ASSERT_GL_ERROR(GL_INVALID_VALUE);
// Fill a full mip chain and verify that it works
glCompressedTexImage2D(GL_TEXTURE_2D, 0, GL_COMPRESSED_RGB_S3TC_DXT1_EXT, 4, 4, 0,
sizeof(CompressedImageDXT1), CompressedImageDXT1);
glCompressedTexImage2D(GL_TEXTURE_2D, 1, GL_COMPRESSED_RGB_S3TC_DXT1_EXT, 2, 2, 0,
sizeof(CompressedImageDXT1), CompressedImageDXT1);
glCompressedTexImage2D(GL_TEXTURE_2D, 2, GL_COMPRESSED_RGB_S3TC_DXT1_EXT, 1, 1, 0,
sizeof(CompressedImageDXT1), CompressedImageDXT1);
ASSERT_GL_NO_ERROR();
glCompressedTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, 4, 4, GL_COMPRESSED_RGB_S3TC_DXT1_EXT,
sizeof(CompressedImageDXT1), CompressedImageDXT1);
ASSERT_GL_NO_ERROR();
// Test that non-block size sub-uploads are not valid for the 0 mip
glCompressedTexSubImage2D(GL_TEXTURE_2D, 0, 2, 2, 2, 2, GL_COMPRESSED_RGB_S3TC_DXT1_EXT,
sizeof(CompressedImageDXT1), CompressedImageDXT1);
ASSERT_GL_ERROR(GL_INVALID_OPERATION);
// Test that non-block size sub-uploads are valid for if they fill the whole mip
glCompressedTexSubImage2D(GL_TEXTURE_2D, 1, 0, 0, 2, 2, GL_COMPRESSED_RGB_S3TC_DXT1_EXT,
sizeof(CompressedImageDXT1), CompressedImageDXT1);
glCompressedTexSubImage2D(GL_TEXTURE_2D, 2, 0, 0, 1, 1, GL_COMPRESSED_RGB_S3TC_DXT1_EXT,
sizeof(CompressedImageDXT1), CompressedImageDXT1);
ASSERT_GL_NO_ERROR();
// Test that if the format miss-matches the texture, an error is generated
glCompressedTexSubImage2D(GL_TEXTURE_2D, 0, 2, 2, 2, 2, GL_COMPRESSED_RGBA_S3TC_DXT1_EXT,
sizeof(CompressedImageDXT1), CompressedImageDXT1);
ASSERT_GL_ERROR(GL_INVALID_OPERATION);
}
TEST_P(WebGLCompatibilityTest, L32FTextures)
{
constexpr float textureData[] = {15.1f, 0.0f, 0.0f, 0.0f};
constexpr float readPixelData[] = {textureData[0], textureData[0], textureData[0], 1.0f};
for (auto extension : FloatingPointTextureExtensions)
{
if (strlen(extension) > 0 && extensionRequestable(extension))
{
glRequestExtensionANGLE(extension);
ASSERT_GL_NO_ERROR();
}
// Unsized L 32F
{
bool texture = extensionEnabled("GL_OES_texture_float");
bool filter = extensionEnabled("GL_OES_texture_float_linear");
bool render = false;
TestFloatTextureFormat(GL_LUMINANCE, GL_LUMINANCE, GL_FLOAT, texture, filter, render,
textureData, readPixelData);
}
if (getClientMajorVersion() >= 3 || extensionEnabled("GL_EXT_texture_storage"))
{
// Sized L 32F
bool texture = extensionEnabled("GL_OES_texture_float") &&
extensionEnabled("GL_EXT_texture_storage");
bool filter = extensionEnabled("GL_OES_texture_float_linear");
bool render = false;
TestFloatTextureFormat(GL_LUMINANCE32F_EXT, GL_LUMINANCE, GL_FLOAT, texture, filter,
render, textureData, readPixelData);
}
}
}
TEST_P(WebGLCompatibilityTest, A32FTextures)
{
constexpr float textureData[] = {33.33f, 0.0f, 0.0f, 0.0f};
constexpr float readPixelData[] = {0.0f, 0.0f, 0.0f, textureData[0]};
for (auto extension : FloatingPointTextureExtensions)
{
if (strlen(extension) > 0 && extensionRequestable(extension))
{
glRequestExtensionANGLE(extension);
ASSERT_GL_NO_ERROR();
}
// Unsized A 32F
{
bool texture = extensionEnabled("GL_OES_texture_float");
bool filter = extensionEnabled("GL_OES_texture_float_linear");
bool render = false;
TestFloatTextureFormat(GL_ALPHA, GL_ALPHA, GL_FLOAT, texture, filter, render,
textureData, readPixelData);
}
if (getClientMajorVersion() >= 3 || extensionEnabled("GL_EXT_texture_storage"))
{
// Sized A 32F
bool texture = extensionEnabled("GL_OES_texture_float") &&
extensionEnabled("GL_EXT_texture_storage");
bool filter = extensionEnabled("GL_OES_texture_float_linear");
bool render = false;
TestFloatTextureFormat(GL_ALPHA32F_EXT, GL_ALPHA, GL_FLOAT, texture, filter, render,
textureData, readPixelData);
}
}
}
TEST_P(WebGLCompatibilityTest, LA32FTextures)
{
constexpr float textureData[] = {-0.21f, 15.1f, 0.0f, 0.0f};
constexpr float readPixelData[] = {textureData[0], textureData[0], textureData[0],
textureData[1]};
for (auto extension : FloatingPointTextureExtensions)
{
if (strlen(extension) > 0 && extensionRequestable(extension))
{
glRequestExtensionANGLE(extension);
ASSERT_GL_NO_ERROR();
}
// Unsized LA 32F
{
bool texture = extensionEnabled("GL_OES_texture_float");
bool filter = extensionEnabled("GL_OES_texture_float_linear");
bool render = false;
TestFloatTextureFormat(GL_LUMINANCE_ALPHA, GL_LUMINANCE_ALPHA, GL_FLOAT, texture,
filter, render, textureData, readPixelData);
}
if (getClientMajorVersion() >= 3 || extensionEnabled("GL_EXT_texture_storage"))
{
// Sized LA 32F
bool texture = extensionEnabled("GL_OES_texture_float") &&
extensionEnabled("GL_EXT_texture_storage");
bool filter = extensionEnabled("GL_OES_texture_float_linear");
bool render = false;
TestFloatTextureFormat(GL_LUMINANCE_ALPHA32F_EXT, GL_LUMINANCE_ALPHA, GL_FLOAT, texture,
filter, render, textureData, readPixelData);
}
}
}
TEST_P(WebGLCompatibilityTest, R32FTextures)
{
constexpr float data[] = {1000.0f, 0.0f, 0.0f, 1.0f};
for (auto extension : FloatingPointTextureExtensions)
{
if (strlen(extension) > 0 && extensionRequestable(extension))
{
glRequestExtensionANGLE(extension);
ASSERT_GL_NO_ERROR();
}
// Unsized R 32F
{
bool texture =
extensionEnabled("GL_OES_texture_float") && extensionEnabled("GL_EXT_texture_rg");
bool filter = extensionEnabled("GL_OES_texture_float_linear");
bool render = extensionEnabled("GL_EXT_color_buffer_float");
TestFloatTextureFormat(GL_RED, GL_RED, GL_FLOAT, texture, filter, render, data, data);
}
if (getClientMajorVersion() >= 3 || extensionEnabled("GL_EXT_texture_storage"))
{
// Sized R 32F
bool texture =
(getClientMajorVersion() >= 3) || (extensionEnabled("GL_OES_texture_float") &&
extensionEnabled("GL_EXT_texture_rg") &&
extensionEnabled("GL_EXT_texture_storage"));
bool filter = extensionEnabled("GL_OES_texture_float_linear");
bool render = extensionEnabled("GL_EXT_color_buffer_float");
TestFloatTextureFormat(GL_R32F, GL_RED, GL_FLOAT, texture, filter, render, data, data);
}
}
}
TEST_P(WebGLCompatibilityTest, RG32FTextures)
{
constexpr float data[] = {1000.0f, -0.001f, 0.0f, 1.0f};
for (auto extension : FloatingPointTextureExtensions)
{
if (strlen(extension) > 0 && extensionRequestable(extension))
{
glRequestExtensionANGLE(extension);
ASSERT_GL_NO_ERROR();
}
// Unsized RG 32F
{
bool texture =
(extensionEnabled("GL_OES_texture_float") && extensionEnabled("GL_EXT_texture_rg"));
bool filter = extensionEnabled("GL_OES_texture_float_linear");
bool render = extensionEnabled("GL_EXT_color_buffer_float");
TestFloatTextureFormat(GL_RG, GL_RG, GL_FLOAT, texture, filter, render, data, data);
}
if (getClientMajorVersion() >= 3 || extensionEnabled("GL_EXT_texture_storage"))
{
// Sized RG 32F
bool texture =
(getClientMajorVersion() >= 3) || (extensionEnabled("GL_OES_texture_float") &&
extensionEnabled("GL_EXT_texture_rg") &&
extensionEnabled("GL_EXT_texture_storage"));
bool filter = extensionEnabled("GL_OES_texture_float_linear");
bool render = extensionEnabled("GL_EXT_color_buffer_float");
TestFloatTextureFormat(GL_RG32F, GL_RG, GL_FLOAT, texture, filter, render, data, data);
}
}
}
TEST_P(WebGLCompatibilityTest, RGB32FTextures)
{
if (IsLinux() && IsIntel())
{
std::cout << "Test skipped on Linux Intel." << std::endl;
return;
}
constexpr float data[] = {1000.0f, -500.0f, 10.0f, 1.0f};
for (auto extension : FloatingPointTextureExtensions)
{
if (strlen(extension) > 0 && extensionRequestable(extension))
{
glRequestExtensionANGLE(extension);
ASSERT_GL_NO_ERROR();
}
// Unsized RGB 32F
{
bool texture = extensionEnabled("GL_OES_texture_float");
bool filter = extensionEnabled("GL_OES_texture_float_linear");
bool render = extensionEnabled("GL_CHROMIUM_color_buffer_float_rgb");
TestFloatTextureFormat(GL_RGB, GL_RGB, GL_FLOAT, texture, filter, render, data, data);
}
if (getClientMajorVersion() >= 3 || extensionEnabled("GL_EXT_texture_storage"))
{
// Sized RGBA 32F
bool texture =
(getClientMajorVersion() >= 3) || (extensionEnabled("GL_OES_texture_float") &&
extensionEnabled("GL_EXT_texture_storage"));
bool filter = extensionEnabled("GL_OES_texture_float_linear");
bool render = extensionEnabled("GL_CHROMIUM_color_buffer_float_rgb");
TestFloatTextureFormat(GL_RGB32F, GL_RGB, GL_FLOAT, texture, filter, render, data,
data);
}
}
}
TEST_P(WebGLCompatibilityTest, RGBA32FTextures)
{
constexpr float data[] = {7000.0f, 100.0f, 33.0f, -1.0f};
for (auto extension : FloatingPointTextureExtensions)
{
if (strlen(extension) > 0 && extensionRequestable(extension))
{
glRequestExtensionANGLE(extension);
ASSERT_GL_NO_ERROR();
}
// Unsized RGBA 32F
{
bool texture = extensionEnabled("GL_OES_texture_float");
bool filter = extensionEnabled("GL_OES_texture_float_linear");
bool render = extensionEnabled("GL_EXT_color_buffer_float") ||
extensionEnabled("GL_CHROMIUM_color_buffer_float_rgba");
TestFloatTextureFormat(GL_RGBA, GL_RGBA, GL_FLOAT, texture, filter, render, data, data);
}
if (getClientMajorVersion() >= 3 || extensionEnabled("GL_EXT_texture_storage"))
{
// Sized RGBA 32F
bool texture =
(getClientMajorVersion() >= 3) || (extensionEnabled("GL_OES_texture_float") &&
extensionEnabled("GL_EXT_texture_storage"));
bool filter = extensionEnabled("GL_OES_texture_float_linear");
bool render = extensionEnabled("GL_EXT_color_buffer_float") ||
extensionEnabled("GL_CHROMIUM_color_buffer_float_rgba");
TestFloatTextureFormat(GL_RGBA32F, GL_RGBA, GL_FLOAT, texture, filter, render, data,
data);
}
}
}
TEST_P(WebGLCompatibilityTest, R16FTextures)
{
constexpr float readPixelsData[] = {-5000.0f, 0.0f, 0.0f, 1.0f};
const GLushort textureData[] = {
gl::float32ToFloat16(readPixelsData[0]), gl::float32ToFloat16(readPixelsData[1]),
gl::float32ToFloat16(readPixelsData[2]), gl::float32ToFloat16(readPixelsData[3])};
for (auto extension : FloatingPointTextureExtensions)
{
if (strlen(extension) > 0 && extensionRequestable(extension))
{
glRequestExtensionANGLE(extension);
ASSERT_GL_NO_ERROR();
}
// Unsized R 16F (OES)
{
bool texture = extensionEnabled("GL_OES_texture_half_float") &&
extensionEnabled("GL_EXT_texture_rg");
bool filter = getClientMajorVersion() >= 3 ||
extensionEnabled("GL_OES_texture_half_float_linear");
bool render = extensionEnabled("GL_EXT_color_buffer_half_float");
TestFloatTextureFormat(GL_RED, GL_RED, GL_HALF_FLOAT_OES, texture, filter, render,
textureData, readPixelsData);
}
// Unsized R 16F
{
bool texture = false;
bool filter = false;
bool render = false;
TestFloatTextureFormat(GL_RED, GL_RED, GL_HALF_FLOAT, texture, filter, render,
textureData, readPixelsData);
}
if (getClientMajorVersion() >= 3 || extensionEnabled("GL_EXT_texture_storage"))
{
// Sized R 16F
bool texture = getClientMajorVersion() >= 3;
bool filter = getClientMajorVersion() >= 3 ||
extensionEnabled("GL_OES_texture_half_float_linear");
bool render = extensionEnabled("GL_EXT_color_buffer_half_float") ||
extensionEnabled("GL_EXT_color_buffer_float");
TestFloatTextureFormat(GL_R16F, GL_RED, GL_HALF_FLOAT, texture, filter, render,
textureData, readPixelsData);
}
}
}
TEST_P(WebGLCompatibilityTest, RG16FTextures)
{
constexpr float readPixelsData[] = {7108.0f, -10.0f, 0.0f, 1.0f};
const GLushort textureData[] = {
gl::float32ToFloat16(readPixelsData[0]), gl::float32ToFloat16(readPixelsData[1]),
gl::float32ToFloat16(readPixelsData[2]), gl::float32ToFloat16(readPixelsData[3])};
for (auto extension : FloatingPointTextureExtensions)
{
if (strlen(extension) > 0 && extensionRequestable(extension))
{
glRequestExtensionANGLE(extension);
ASSERT_GL_NO_ERROR();
}
// Unsized RG 16F (OES)
{
bool texture = extensionEnabled("GL_OES_texture_half_float") &&
extensionEnabled("GL_EXT_texture_rg");
bool filter = getClientMajorVersion() >= 3 ||
extensionEnabled("GL_OES_texture_half_float_linear");
bool render = extensionEnabled("GL_EXT_color_buffer_half_float") &&
extensionEnabled("GL_EXT_texture_rg");
TestFloatTextureFormat(GL_RG, GL_RG, GL_HALF_FLOAT_OES, texture, filter, render,
textureData, readPixelsData);
}
// Unsized RG 16F
{
bool texture = false;
bool filter = false;
bool render = false;
TestFloatTextureFormat(GL_RG, GL_RG, GL_HALF_FLOAT, texture, filter, render,
textureData, readPixelsData);
}
if (getClientMajorVersion() >= 3 || extensionEnabled("GL_EXT_texture_storage"))
{
// Sized RG 16F
bool texture = getClientMajorVersion() >= 3;
bool filter = getClientMajorVersion() >= 3 ||
extensionEnabled("GL_OES_texture_half_float_linear");
bool render = extensionEnabled("GL_EXT_color_buffer_half_float") ||
extensionEnabled("GL_EXT_color_buffer_float");
TestFloatTextureFormat(GL_RG16F, GL_RG, GL_HALF_FLOAT, texture, filter, render,
textureData, readPixelsData);
}
}
}
TEST_P(WebGLCompatibilityTest, RGB16FTextures)
{
if (IsOzone() && IsIntel())
{
std::cout << "Test skipped on Intel Ozone." << std::endl;
return;
}
constexpr float readPixelsData[] = {7000.0f, 100.0f, 33.0f, 1.0f};
const GLushort textureData[] = {
gl::float32ToFloat16(readPixelsData[0]), gl::float32ToFloat16(readPixelsData[1]),
gl::float32ToFloat16(readPixelsData[2]), gl::float32ToFloat16(readPixelsData[3])};
for (auto extension : FloatingPointTextureExtensions)
{
if (strlen(extension) > 0 && extensionRequestable(extension))
{
glRequestExtensionANGLE(extension);
ASSERT_GL_NO_ERROR();
}
// Unsized RGB 16F (OES)
{
bool texture = extensionEnabled("GL_OES_texture_half_float");
bool filter = getClientMajorVersion() >= 3 ||
extensionEnabled("GL_OES_texture_half_float_linear");
bool render = extensionEnabled("GL_EXT_color_buffer_half_float");
TestFloatTextureFormat(GL_RGB, GL_RGB, GL_HALF_FLOAT_OES, texture, filter, render,
textureData, readPixelsData);
}
// Unsized RGB 16F
{
bool texture = false;
bool filter = false;
bool render = false;
TestFloatTextureFormat(GL_RGB, GL_RGB, GL_HALF_FLOAT, texture, filter, render,
textureData, readPixelsData);
}
if (getClientMajorVersion() >= 3 || extensionEnabled("GL_EXT_texture_storage"))
{
// Sized RGB 16F
bool texture = getClientMajorVersion() >= 3;
bool filter = getClientMajorVersion() >= 3 ||
extensionEnabled("GL_OES_texture_half_float_linear");
bool render = extensionEnabled("GL_EXT_color_buffer_half_float");
TestFloatTextureFormat(GL_RGB16F, GL_RGB, GL_HALF_FLOAT, texture, filter, render,
textureData, readPixelsData);
}
}
}
TEST_P(WebGLCompatibilityTest, RGBA16FTextures)
{
if (IsOzone() && IsIntel())
{
std::cout << "Test skipped on Intel Ozone." << std::endl;
return;
}
constexpr float readPixelsData[] = {7000.0f, 100.0f, 33.0f, -1.0f};
const GLushort textureData[] = {
gl::float32ToFloat16(readPixelsData[0]), gl::float32ToFloat16(readPixelsData[1]),
gl::float32ToFloat16(readPixelsData[2]), gl::float32ToFloat16(readPixelsData[3])};
for (auto extension : FloatingPointTextureExtensions)
{
if (strlen(extension) > 0 && extensionRequestable(extension))
{
glRequestExtensionANGLE(extension);
ASSERT_GL_NO_ERROR();
}
// Unsized RGBA 16F (OES)
{
bool texture = extensionEnabled("GL_OES_texture_half_float");
bool filter = getClientMajorVersion() >= 3 ||
extensionEnabled("GL_OES_texture_half_float_linear");
bool render = extensionEnabled("GL_EXT_color_buffer_half_float") ||
extensionEnabled("GL_EXT_color_buffer_float");
TestFloatTextureFormat(GL_RGBA, GL_RGBA, GL_HALF_FLOAT_OES, texture, filter, render,
textureData, readPixelsData);
}
// Unsized RGBA 16F
{
bool texture = false;
bool filter = false;
bool render = false;
TestFloatTextureFormat(GL_RGBA, GL_RGBA, GL_HALF_FLOAT, texture, filter, render,
textureData, readPixelsData);
}
if (getClientMajorVersion() >= 3 || extensionEnabled("GL_EXT_texture_storage"))
{
// Sized RGBA 16F
bool texture = getClientMajorVersion() >= 3;
bool filter = getClientMajorVersion() >= 3 ||
extensionEnabled("GL_OES_texture_half_float_linear");
bool render = extensionEnabled("GL_EXT_color_buffer_half_float") ||
extensionEnabled("GL_EXT_color_buffer_float");
TestFloatTextureFormat(GL_RGBA16F, GL_RGBA, GL_HALF_FLOAT, texture, filter, render,
textureData, readPixelsData);
}
}
}
// This tests that rendering feedback loops works as expected with WebGL 2.
// Based on WebGL test conformance2/rendering/rendering-sampling-feedback-loop.html
TEST_P(WebGL2CompatibilityTest, RenderingFeedbackLoopWithDrawBuffers)
{
const std::string vertexShader =
"#version 300 es\n"
"in vec4 aPosition;\n"
"out vec2 texCoord;\n"
"void main() {\n"
" gl_Position = aPosition;\n"
" texCoord = (aPosition.xy * 0.5) + 0.5;\n"
"}\n";
const std::string fragmentShader =
"#version 300 es\n"
"precision mediump float;\n"
"uniform sampler2D tex;\n"
"in vec2 texCoord;\n"
"out vec4 oColor;\n"
"void main() {\n"
" oColor = texture(tex, texCoord);\n"
"}\n";
GLsizei width = 8;
GLsizei height = 8;
GLint maxDrawBuffers = 0;
glGetIntegerv(GL_MAX_DRAW_BUFFERS, &maxDrawBuffers);
// ES3 requires a minimum value of 4 for MAX_DRAW_BUFFERS.
ASSERT_GE(maxDrawBuffers, 2);
ANGLE_GL_PROGRAM(program, vertexShader, fragmentShader);
glUseProgram(program.get());
glViewport(0, 0, width, height);
GLTexture tex0;
GLTexture tex1;
GLFramebuffer fbo;
FillTexture2D(tex0.get(), width, height, GLColor::red, 0, GL_RGBA, GL_RGBA, GL_UNSIGNED_BYTE);
FillTexture2D(tex1.get(), width, height, GLColor::green, 0, GL_RGBA, GL_RGBA, GL_UNSIGNED_BYTE);
ASSERT_GL_NO_ERROR();
glBindTexture(GL_TEXTURE_2D, tex1.get());
GLint texLoc = glGetUniformLocation(program.get(), "tex");
ASSERT_NE(-1, texLoc);
glUniform1i(texLoc, 0);
// The sampling texture is bound to COLOR_ATTACHMENT1 during resource allocation
glBindFramebuffer(GL_FRAMEBUFFER, fbo.get());
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, tex0.get(), 0);
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT1, GL_TEXTURE_2D, tex1.get(), 0);
ASSERT_GL_NO_ERROR();
drawBuffersFeedbackLoop(program.get(), {{GL_NONE, GL_COLOR_ATTACHMENT1}}, GL_INVALID_OPERATION);
drawBuffersFeedbackLoop(program.get(), {{GL_COLOR_ATTACHMENT0, GL_COLOR_ATTACHMENT1}},
GL_INVALID_OPERATION);
drawBuffersFeedbackLoop(program.get(), {{GL_COLOR_ATTACHMENT0, GL_NONE}}, GL_NO_ERROR);
}
// This test covers detection of rendering feedback loops between the FBO and a depth Texture.
// Based on WebGL test conformance2/rendering/depth-stencil-feedback-loop.html
TEST_P(WebGL2CompatibilityTest, RenderingFeedbackLoopWithDepthStencil)
{
const std::string vertexShader =
"#version 300 es\n"
"in vec4 aPosition;\n"
"out vec2 texCoord;\n"
"void main() {\n"
" gl_Position = aPosition;\n"
" texCoord = (aPosition.xy * 0.5) + 0.5;\n"
"}\n";
const std::string fragmentShader =
"#version 300 es\n"
"precision mediump float;\n"
"uniform sampler2D tex;\n"
"in vec2 texCoord;\n"
"out vec4 oColor;\n"
"void main() {\n"
" oColor = texture(tex, texCoord);\n"
"}\n";
GLsizei width = 8;
GLsizei height = 8;
ANGLE_GL_PROGRAM(program, vertexShader, fragmentShader);
glUseProgram(program.get());
glViewport(0, 0, width, height);
GLint texLoc = glGetUniformLocation(program.get(), "tex");
glUniform1i(texLoc, 0);
// Create textures and allocate storage
GLTexture tex0;
GLTexture tex1;
GLRenderbuffer rb;
FillTexture2D(tex0.get(), width, height, GLColor::black, 0, GL_RGBA, GL_RGBA, GL_UNSIGNED_BYTE);
FillTexture2D(tex1.get(), width, height, 0x80, 0, GL_DEPTH_COMPONENT16, GL_DEPTH_COMPONENT,
GL_UNSIGNED_INT);
glBindRenderbuffer(GL_RENDERBUFFER, rb.get());
glRenderbufferStorage(GL_RENDERBUFFER, GL_STENCIL_INDEX8, width, height);
ASSERT_GL_NO_ERROR();
GLFramebuffer fbo;
glBindFramebuffer(GL_FRAMEBUFFER, fbo.get());
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, tex0.get(), 0);
// Test rendering and sampling feedback loop for depth buffer
glBindTexture(GL_TEXTURE_2D, tex1.get());
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, GL_TEXTURE_2D, tex1.get(), 0);
ASSERT_GLENUM_EQ(GL_FRAMEBUFFER_COMPLETE, glCheckFramebufferStatus(GL_FRAMEBUFFER));
// The same image is used as depth buffer during rendering.
glEnable(GL_DEPTH_TEST);
drawQuad(program.get(), "aPosition", 0.5f, 1.0f, true);
EXPECT_GL_ERROR(GL_INVALID_OPERATION);
// The same image is used as depth buffer. But depth mask is false.
glDepthMask(GL_FALSE);
drawQuad(program.get(), "aPosition", 0.5f, 1.0f, true);
EXPECT_GL_NO_ERROR();
// The same image is used as depth buffer. But depth test is not enabled during rendering.
glDepthMask(GL_TRUE);
glDisable(GL_DEPTH_TEST);
drawQuad(program.get(), "aPosition", 0.5f, 1.0f, true);
EXPECT_GL_NO_ERROR();
// Test rendering and sampling feedback loop for stencil buffer
glBindTexture(GL_RENDERBUFFER, rb.get());
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, GL_TEXTURE_2D, 0, 0);
glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_STENCIL_ATTACHMENT, GL_RENDERBUFFER, rb.get());
ASSERT_GLENUM_EQ(GL_FRAMEBUFFER_COMPLETE, glCheckFramebufferStatus(GL_FRAMEBUFFER));
constexpr GLint stencilClearValue = 0x40;
glClearBufferiv(GL_STENCIL, 0, &stencilClearValue);
// The same image is used as stencil buffer during rendering.
glEnable(GL_STENCIL_TEST);
drawQuad(program.get(), "aPosition", 0.5f, 1.0f, true);
EXPECT_GL_ERROR(GL_INVALID_OPERATION);
// The same image is used as stencil buffer. But stencil mask is zero.
glStencilMask(0x0);
drawQuad(program.get(), "aPosition", 0.5f, 1.0f, true);
EXPECT_GL_NO_ERROR();
// The same image is used as stencil buffer. But stencil test is not enabled during rendering.
glStencilMask(0xffff);
glDisable(GL_STENCIL_TEST);
drawQuad(program.get(), "aPosition", 0.5f, 1.0f, true);
EXPECT_GL_NO_ERROR();
}
// The source and the target for CopyTexSubImage3D are the same 3D texture.
// But the level of the 3D texture != the level of the read attachment.
TEST_P(WebGL2CompatibilityTest, NoTextureCopyingFeedbackLoopBetween3DLevels)
{
GLTexture texture;
GLFramebuffer framebuffer;
glBindTexture(GL_TEXTURE_3D, texture.get());
glBindFramebuffer(GL_FRAMEBUFFER, framebuffer.get());
glTexImage3D(GL_TEXTURE_3D, 0, GL_RGBA8, 2, 2, 2, 0, GL_RGBA, GL_UNSIGNED_BYTE, nullptr);
glTexImage3D(GL_TEXTURE_3D, 1, GL_RGBA8, 2, 2, 2, 0, GL_RGBA, GL_UNSIGNED_BYTE, nullptr);
glFramebufferTextureLayer(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, texture.get(), 0, 0);
ASSERT_GL_NO_ERROR();
glCopyTexSubImage3D(GL_TEXTURE_3D, 1, 0, 0, 0, 0, 0, 2, 2);
EXPECT_GL_NO_ERROR();
}
// The source and the target for CopyTexSubImage3D are the same 3D texture.
// But the zoffset of the 3D texture != the layer of the read attachment.
TEST_P(WebGL2CompatibilityTest, NoTextureCopyingFeedbackLoopBetween3DLayers)
{
GLTexture texture;
GLFramebuffer framebuffer;
glBindTexture(GL_TEXTURE_3D, texture.get());
glBindFramebuffer(GL_FRAMEBUFFER, framebuffer.get());
glTexImage3D(GL_TEXTURE_3D, 0, GL_RGBA8, 2, 2, 2, 0, GL_RGBA, GL_UNSIGNED_BYTE, nullptr);
glFramebufferTextureLayer(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, texture.get(), 0, 1);
ASSERT_GL_NO_ERROR();
glCopyTexSubImage3D(GL_TEXTURE_3D, 0, 0, 0, 0, 0, 0, 2, 2);
EXPECT_GL_NO_ERROR();
}
// The source and the target for CopyTexSubImage3D are the same 3D texture.
// And the level / zoffset of the 3D texture is equal to the level / layer of the read attachment.
TEST_P(WebGL2CompatibilityTest, TextureCopyingFeedbackLoop3D)
{
GLTexture texture;
GLFramebuffer framebuffer;
glBindTexture(GL_TEXTURE_3D, texture.get());
glBindFramebuffer(GL_FRAMEBUFFER, framebuffer.get());
glTexImage3D(GL_TEXTURE_3D, 0, GL_RGBA8, 4, 4, 4, 0, GL_RGBA, GL_UNSIGNED_BYTE, nullptr);
glTexImage3D(GL_TEXTURE_3D, 1, GL_RGBA8, 2, 2, 2, 0, GL_RGBA, GL_UNSIGNED_BYTE, nullptr);
glTexImage3D(GL_TEXTURE_3D, 2, GL_RGBA8, 1, 1, 1, 0, GL_RGBA, GL_UNSIGNED_BYTE, nullptr);
glFramebufferTextureLayer(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, texture.get(), 1, 0);
ASSERT_GL_NO_ERROR();
glCopyTexSubImage3D(GL_TEXTURE_3D, 1, 0, 0, 0, 0, 0, 2, 2);
EXPECT_GL_ERROR(GL_INVALID_OPERATION);
}
// Verify that errors are generated when there isn not a defined conversion between the clear type
// and the buffer type.
TEST_P(WebGL2CompatibilityTest, ClearBufferTypeCompatibity)
{
if (IsD3D11())
{
std::cout << "Test skipped because it generates D3D11 runtime warnings." << std::endl;
return;
}
constexpr float clearFloat[] = {0.0f, 0.0f, 0.0f, 0.0f};
constexpr int clearInt[] = {0, 0, 0, 0};
constexpr unsigned int clearUint[] = {0, 0, 0, 0};
GLTexture texture;
GLFramebuffer framebuffer;
glBindTexture(GL_TEXTURE_2D, texture.get());
glBindFramebuffer(GL_FRAMEBUFFER, framebuffer.get());
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, texture.get(), 0);
ASSERT_GL_NO_ERROR();
// Unsigned integer buffer
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA32UI, 1, 1, 0, GL_RGBA_INTEGER, GL_UNSIGNED_INT, nullptr);
ASSERT_GL_NO_ERROR();
glClearBufferfv(GL_COLOR, 0, clearFloat);
EXPECT_GL_ERROR(GL_INVALID_OPERATION);
glClearBufferiv(GL_COLOR, 0, clearInt);
EXPECT_GL_ERROR(GL_INVALID_OPERATION);
glClearBufferuiv(GL_COLOR, 0, clearUint);
EXPECT_GL_NO_ERROR();
glClear(GL_COLOR_BUFFER_BIT);
EXPECT_GL_ERROR(GL_INVALID_OPERATION);
// Integer buffer
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA32I, 1, 1, 0, GL_RGBA_INTEGER, GL_INT, nullptr);
ASSERT_GL_NO_ERROR();
glClearBufferfv(GL_COLOR, 0, clearFloat);
EXPECT_GL_ERROR(GL_INVALID_OPERATION);
glClearBufferiv(GL_COLOR, 0, clearInt);
EXPECT_GL_NO_ERROR();
glClearBufferuiv(GL_COLOR, 0, clearUint);
EXPECT_GL_ERROR(GL_INVALID_OPERATION);
glClear(GL_COLOR_BUFFER_BIT);
EXPECT_GL_ERROR(GL_INVALID_OPERATION);
// Float buffer
if (extensionRequestable("GL_EXT_color_buffer_float"))
{
glRequestExtensionANGLE("GL_EXT_color_buffer_float");
}
if (extensionEnabled("GL_EXT_color_buffer_float"))
{
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA32F, 1, 1, 0, GL_RGBA, GL_FLOAT, nullptr);
ASSERT_GL_NO_ERROR();
glClearBufferfv(GL_COLOR, 0, clearFloat);
EXPECT_GL_NO_ERROR();
glClearBufferiv(GL_COLOR, 0, clearInt);
EXPECT_GL_ERROR(GL_INVALID_OPERATION);
glClearBufferuiv(GL_COLOR, 0, clearUint);
EXPECT_GL_ERROR(GL_INVALID_OPERATION);
glClear(GL_COLOR_BUFFER_BIT);
EXPECT_GL_NO_ERROR();
}
// Normalized uint buffer
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA8, 1, 1, 0, GL_RGBA, GL_UNSIGNED_BYTE, nullptr);
ASSERT_GL_NO_ERROR();
glClearBufferfv(GL_COLOR, 0, clearFloat);
EXPECT_GL_NO_ERROR();
glClearBufferiv(GL_COLOR, 0, clearInt);
EXPECT_GL_ERROR(GL_INVALID_OPERATION);
glClearBufferuiv(GL_COLOR, 0, clearUint);
EXPECT_GL_ERROR(GL_INVALID_OPERATION);
glClear(GL_COLOR_BUFFER_BIT);
EXPECT_GL_NO_ERROR();
}
// Verify that errors are generate when trying to blit from an image to itself
TEST_P(WebGL2CompatibilityTest, BlitFramebufferSameImage)
{
GLTexture textures[2];
glBindTexture(GL_TEXTURE_2D, textures[0]);
glTexStorage2D(GL_TEXTURE_2D, 3, GL_RGBA8, 4, 4);
glBindTexture(GL_TEXTURE_2D, textures[1]);
glTexStorage2D(GL_TEXTURE_2D, 3, GL_RGBA8, 4, 4);
GLRenderbuffer renderbuffers[2];
glBindRenderbuffer(GL_RENDERBUFFER, renderbuffers[0]);
glRenderbufferStorage(GL_RENDERBUFFER, GL_DEPTH24_STENCIL8, 4, 4);
glBindRenderbuffer(GL_RENDERBUFFER, renderbuffers[1]);
glRenderbufferStorage(GL_RENDERBUFFER, GL_DEPTH24_STENCIL8, 4, 4);
GLFramebuffer framebuffers[2];
glBindFramebuffer(GL_READ_FRAMEBUFFER, framebuffers[0]);
glBindFramebuffer(GL_DRAW_FRAMEBUFFER, framebuffers[1]);
ASSERT_GL_NO_ERROR();
// Same texture
glFramebufferTexture2D(GL_READ_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, textures[0],
0);
glFramebufferTexture2D(GL_DRAW_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, textures[0],
0);
ASSERT_GL_NO_ERROR();
glBlitFramebuffer(0, 0, 4, 4, 0, 0, 4, 4, GL_COLOR_BUFFER_BIT, GL_NEAREST);
ASSERT_GL_ERROR(GL_INVALID_OPERATION);
// Same textures but different renderbuffers
glFramebufferRenderbuffer(GL_READ_FRAMEBUFFER, GL_DEPTH_STENCIL_ATTACHMENT, GL_RENDERBUFFER,
renderbuffers[0]);
glFramebufferRenderbuffer(GL_DRAW_FRAMEBUFFER, GL_DEPTH_STENCIL_ATTACHMENT, GL_RENDERBUFFER,
renderbuffers[1]);
ASSERT_GL_NO_ERROR();
glBlitFramebuffer(0, 0, 4, 4, 0, 0, 4, 4, GL_DEPTH_BUFFER_BIT, GL_NEAREST);
ASSERT_GL_NO_ERROR();
glBlitFramebuffer(0, 0, 4, 4, 0, 0, 4, 4, GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT,
GL_NEAREST);
ASSERT_GL_NO_ERROR();
glBlitFramebuffer(0, 0, 4, 4, 0, 0, 4, 4,
GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT,
GL_NEAREST);
ASSERT_GL_ERROR(GL_INVALID_OPERATION);
// Same renderbuffers but different textures
glFramebufferTexture2D(GL_READ_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, textures[0],
0);
glFramebufferTexture2D(GL_DRAW_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, textures[1],
0);
glFramebufferRenderbuffer(GL_READ_FRAMEBUFFER, GL_DEPTH_STENCIL_ATTACHMENT, GL_RENDERBUFFER,
renderbuffers[0]);
glFramebufferRenderbuffer(GL_DRAW_FRAMEBUFFER, GL_DEPTH_STENCIL_ATTACHMENT, GL_RENDERBUFFER,
renderbuffers[0]);
ASSERT_GL_NO_ERROR();
glBlitFramebuffer(0, 0, 4, 4, 0, 0, 4, 4, GL_COLOR_BUFFER_BIT, GL_NEAREST);
ASSERT_GL_NO_ERROR();
glBlitFramebuffer(0, 0, 4, 4, 0, 0, 4, 4, GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT,
GL_NEAREST);
ASSERT_GL_ERROR(GL_INVALID_OPERATION);
glBlitFramebuffer(0, 0, 4, 4, 0, 0, 4, 4,
GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT,
GL_NEAREST);
ASSERT_GL_ERROR(GL_INVALID_OPERATION);
}
// Use this to select which configurations (e.g. which renderer, which GLES major version) these
// tests should be run against.
ANGLE_INSTANTIATE_TEST(WebGLCompatibilityTest,
ES2_D3D9(),
ES2_D3D11(),
ES3_D3D11(),
ES2_OPENGL(),
ES3_OPENGL(),
ES2_OPENGLES(),
ES3_OPENGLES());
ANGLE_INSTANTIATE_TEST(WebGL2CompatibilityTest, ES3_D3D11(), ES3_OPENGL(), ES3_OPENGLES());
} // namespace