| // |
| // 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" |
| |
| using namespace angle; |
| |
| class PBOExtensionTest : public ANGLETest |
| { |
| protected: |
| PBOExtensionTest() |
| { |
| setWindowWidth(32); |
| setWindowHeight(32); |
| setConfigRedBits(8); |
| setConfigGreenBits(8); |
| setConfigBlueBits(8); |
| setConfigAlphaBits(8); |
| } |
| |
| virtual void SetUp() |
| { |
| ANGLETest::SetUp(); |
| |
| if (extensionEnabled("NV_pixel_buffer_object")) |
| { |
| glGenBuffers(1, &mPBO); |
| glBindBuffer(GL_PIXEL_PACK_BUFFER, mPBO); |
| glBufferData(GL_PIXEL_PACK_BUFFER, 4 * getWindowWidth() * getWindowHeight(), nullptr, |
| GL_STATIC_DRAW); |
| glBindBuffer(GL_PIXEL_PACK_BUFFER, 0); |
| |
| const char *vertexShaderSrc = |
| SHADER_SOURCE(attribute vec4 aTest; attribute vec2 aPosition; varying vec4 vTest; |
| |
| void main() { |
| vTest = aTest; |
| gl_Position = vec4(aPosition, 0.0, 1.0); |
| gl_PointSize = 1.0; |
| }); |
| |
| const char *fragmentShaderSrc = |
| SHADER_SOURCE(precision mediump float; varying vec4 vTest; |
| |
| void main() { gl_FragColor = vTest; }); |
| |
| mProgram = CompileProgram(vertexShaderSrc, fragmentShaderSrc); |
| |
| glGenBuffers(1, &mPositionVBO); |
| glBindBuffer(GL_ARRAY_BUFFER, mPositionVBO); |
| glBufferData(GL_ARRAY_BUFFER, 128, nullptr, GL_DYNAMIC_DRAW); |
| glBindBuffer(GL_ARRAY_BUFFER, 0); |
| } |
| ASSERT_GL_NO_ERROR(); |
| } |
| |
| virtual void TearDown() |
| { |
| ANGLETest::TearDown(); |
| |
| glDeleteBuffers(1, &mPBO); |
| glDeleteProgram(mProgram); |
| } |
| |
| GLuint mPBO; |
| GLuint mProgram; |
| GLuint mPositionVBO; |
| }; |
| |
| TEST_P(PBOExtensionTest, PBOWithOtherTarget) |
| { |
| if (extensionEnabled("NV_pixel_buffer_object")) |
| { |
| glClearColor(1.0f, 0.0f, 0.0f, 1.0f); |
| glClear(GL_COLOR_BUFFER_BIT); |
| EXPECT_GL_NO_ERROR(); |
| |
| glBindBuffer(GL_PIXEL_PACK_BUFFER, mPBO); |
| glReadPixels(0, 0, 16, 16, GL_RGBA, GL_UNSIGNED_BYTE, 0); |
| |
| glBindBuffer(GL_PIXEL_PACK_BUFFER, 0); |
| glBindBuffer(GL_ARRAY_BUFFER, mPBO); |
| |
| void *mappedPtr = glMapBufferRangeEXT(GL_ARRAY_BUFFER, 0, 32, GL_MAP_READ_BIT); |
| unsigned char *dataPtr = static_cast<unsigned char *>(mappedPtr); |
| EXPECT_GL_NO_ERROR(); |
| |
| EXPECT_EQ(255, dataPtr[0]); |
| EXPECT_EQ(0, dataPtr[1]); |
| EXPECT_EQ(0, dataPtr[2]); |
| EXPECT_EQ(255, dataPtr[3]); |
| |
| glUnmapBufferOES(GL_ARRAY_BUFFER); |
| } |
| EXPECT_GL_NO_ERROR(); |
| } |
| |
| TEST_P(PBOExtensionTest, PBOWithExistingData) |
| { |
| if (extensionEnabled("NV_pixel_buffer_object")) |
| { |
| // Clear backbuffer to red |
| glClearColor(1.0f, 0.0f, 0.0f, 1.0f); |
| glClear(GL_COLOR_BUFFER_BIT); |
| EXPECT_GL_NO_ERROR(); |
| |
| // Read 16x16 region from red backbuffer to PBO |
| glBindBuffer(GL_PIXEL_PACK_BUFFER, mPBO); |
| glReadPixels(0, 0, 16, 16, GL_RGBA, GL_UNSIGNED_BYTE, 0); |
| |
| // Clear backbuffer to green |
| glClearColor(0.0f, 1.0f, 0.0f, 1.0f); |
| glClear(GL_COLOR_BUFFER_BIT); |
| EXPECT_GL_NO_ERROR(); |
| |
| // Read 16x16 region from green backbuffer to PBO at offset 16 |
| glReadPixels(0, 0, 16, 16, GL_RGBA, GL_UNSIGNED_BYTE, reinterpret_cast<void *>(16)); |
| void *mappedPtr = glMapBufferRangeEXT(GL_PIXEL_PACK_BUFFER, 0, 32, GL_MAP_READ_BIT); |
| unsigned char *dataPtr = static_cast<unsigned char *>(mappedPtr); |
| EXPECT_GL_NO_ERROR(); |
| |
| // Test pixel 0 is red (existing data) |
| EXPECT_EQ(255, dataPtr[0]); |
| EXPECT_EQ(0, dataPtr[1]); |
| EXPECT_EQ(0, dataPtr[2]); |
| EXPECT_EQ(255, dataPtr[3]); |
| |
| // Test pixel 16 is green (new data) |
| EXPECT_EQ(0, dataPtr[16 * 4 + 0]); |
| EXPECT_EQ(255, dataPtr[16 * 4 + 1]); |
| EXPECT_EQ(0, dataPtr[16 * 4 + 2]); |
| EXPECT_EQ(255, dataPtr[16 * 4 + 3]); |
| |
| glUnmapBufferOES(GL_PIXEL_PACK_BUFFER); |
| } |
| EXPECT_GL_NO_ERROR(); |
| } |
| |
| // Use this to select which configurations (e.g. which renderer, which GLES major version) these |
| // tests should be run against. |
| ANGLE_INSTANTIATE_TEST(PBOExtensionTest, ES2_D3D11(), ES3_D3D11(), ES3_OPENGL(), ES3_OPENGLES()); |