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-rw-r--r--gpu/command_buffer/tests/gl_chromium_framebuffer_multisample_unittest.cc3
-rw-r--r--gpu/command_buffer/tests/gl_ext_multisample_compatibility_unittest.cc296
2 files changed, 1 insertions, 298 deletions
diff --git a/gpu/command_buffer/tests/gl_chromium_framebuffer_multisample_unittest.cc b/gpu/command_buffer/tests/gl_chromium_framebuffer_multisample_unittest.cc
index 8268b66..9d36a26 100644
--- a/gpu/command_buffer/tests/gl_chromium_framebuffer_multisample_unittest.cc
+++ b/gpu/command_buffer/tests/gl_chromium_framebuffer_multisample_unittest.cc
@@ -44,8 +44,7 @@ TEST_F(GLChromiumFramebufferMultisampleTest, CachedBindingsTest) {
}
TEST_F(GLChromiumFramebufferMultisampleTest, DrawAndResolve) {
- if (!(GLTestHelper::HasExtension("GL_CHROMIUM_framebuffer_multisample") &&
- GLTestHelper::HasExtension("GL_OES_rgb8_rgba8"))) {
+ if (!GLTestHelper::HasExtension("GL_CHROMIUM_framebuffer_multisample")) {
return;
}
diff --git a/gpu/command_buffer/tests/gl_ext_multisample_compatibility_unittest.cc b/gpu/command_buffer/tests/gl_ext_multisample_compatibility_unittest.cc
deleted file mode 100644
index 988b0e62..0000000
--- a/gpu/command_buffer/tests/gl_ext_multisample_compatibility_unittest.cc
+++ /dev/null
@@ -1,296 +0,0 @@
-// Copyright (c) 2012 The Chromium 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 <GLES2/gl2.h>
-#include <GLES2/gl2ext.h>
-#include <GLES2/gl2extchromium.h>
-
-#include "gpu/command_buffer/tests/gl_manager.h"
-#include "gpu/command_buffer/tests/gl_test_utils.h"
-#include "testing/gtest/include/gtest/gtest.h"
-
-#define SHADER0(Src) #Src
-
-namespace {
-uint32 GetPixel(GLint x,
- GLint y,
- uint8* r = nullptr,
- uint8* g = nullptr,
- uint8* b = nullptr,
- uint8* a = nullptr) {
- uint8 pixels[4];
- memset(pixels, GLTestHelper::kCheckClearValue, sizeof(pixels));
- glReadPixels(x, y, 1, 1, GL_RGBA, GL_UNSIGNED_BYTE, pixels);
- if (r) {
- *r = pixels[0];
- }
- if (g) {
- *g = pixels[1];
- }
- if (b) {
- *b = pixels[2];
- }
- if (a) {
- *a = pixels[3];
- }
- uint32 result;
- memcpy(&result, pixels, sizeof(result));
- return result;
-}
-} // namespace
-
-namespace gpu {
-
-class EXTMultisampleCompatibilityTest : public testing::Test {
- public:
- protected:
- static const GLuint kWidth = 100;
- static const GLuint kHeight = 100;
-
- void SetUp() override { gl_.Initialize(GLManager::Options()); }
-
- void TearDown() override { gl_.Destroy(); }
-
- void PrepareForDraw() {
- static const char* v_shader_str = SHADER0(
- attribute vec4 a_Position; void main() { gl_Position = a_Position; });
- static const char* f_shader_str =
- SHADER0(precision mediump float; uniform vec4 color;
- void main() { gl_FragColor = color; });
-
- GLuint program = GLTestHelper::LoadProgram(v_shader_str, f_shader_str);
- glUseProgram(program);
- GLuint position_loc = glGetAttribLocation(program, "a_Position");
- color_loc_ = glGetUniformLocation(program, "color");
-
- GLuint vbo = 0;
- glGenBuffers(1, &vbo);
- glBindBuffer(GL_ARRAY_BUFFER, vbo);
- static float vertices[] = {
- 1.0f, 1.0f, -1.0f, 1.0f, -1.0f, -1.0f, -1.0f, 1.0f, -1.0f,
- -1.0f, 1.0f, -1.0f, -1.0f, -1.0f, 1.0f, -1.0f, 1.0f, 1.0f,
- };
- glBufferData(GL_ARRAY_BUFFER, sizeof(vertices), vertices, GL_STATIC_DRAW);
- glEnableVertexAttribArray(position_loc);
- glVertexAttribPointer(position_loc, 2, GL_FLOAT, GL_FALSE, 0, 0);
-
- // Create a sample buffer.
- GLsizei num_samples = 4, max_samples = 0;
- glGetIntegerv(GL_MAX_SAMPLES, &max_samples);
- num_samples = std::min(num_samples, max_samples);
- GLuint sample_rb;
- glGenRenderbuffers(1, &sample_rb);
- glBindRenderbuffer(GL_RENDERBUFFER, sample_rb);
- glRenderbufferStorageMultisampleCHROMIUM(GL_RENDERBUFFER, num_samples,
- GL_RGBA8_OES, kWidth, kHeight);
- GLint param = 0;
- glGetRenderbufferParameteriv(GL_RENDERBUFFER, GL_RENDERBUFFER_SAMPLES,
- &param);
- EXPECT_GE(param, num_samples);
-
- glGenFramebuffers(1, &sample_fbo_);
- glBindFramebuffer(GL_FRAMEBUFFER, sample_fbo_);
- glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0,
- GL_RENDERBUFFER, sample_rb);
- EXPECT_EQ(static_cast<GLenum>(GL_FRAMEBUFFER_COMPLETE),
- glCheckFramebufferStatus(GL_FRAMEBUFFER));
- glBindFramebuffer(GL_FRAMEBUFFER, 0);
-
- // Create another FBO to resolve the multisample buffer into.
- GLuint resolve_tex;
- glGenTextures(1, &resolve_tex);
- glBindTexture(GL_TEXTURE_2D, resolve_tex);
- glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, kWidth, kHeight, 0, GL_RGBA,
- GL_UNSIGNED_BYTE, NULL);
- glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
- glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
- glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
- glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
- glGenFramebuffers(1, &resolve_fbo_);
- glBindFramebuffer(GL_FRAMEBUFFER, resolve_fbo_);
- glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D,
- resolve_tex, 0);
- EXPECT_EQ(static_cast<GLenum>(GL_FRAMEBUFFER_COMPLETE),
- glCheckFramebufferStatus(GL_FRAMEBUFFER));
-
- glViewport(0, 0, kWidth, kHeight);
- glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
- glEnable(GL_BLEND);
- glBindFramebuffer(GL_FRAMEBUFFER, sample_fbo_);
- glClearColor(0.0f, 0.0f, 0.0f, 0.0f);
- glClear(GL_COLOR_BUFFER_BIT);
- }
-
- void PrepareForVerify() {
- // Resolve.
- glBindFramebuffer(GL_READ_FRAMEBUFFER, sample_fbo_);
- glBindFramebuffer(GL_DRAW_FRAMEBUFFER, resolve_fbo_);
- glClearColor(1.0f, 0.0f, 0.0f, 0.0f);
- glClear(GL_COLOR_BUFFER_BIT);
- glBlitFramebufferCHROMIUM(0, 0, kWidth, kHeight, 0, 0, kWidth, kHeight,
- GL_COLOR_BUFFER_BIT, GL_NEAREST);
- glBindFramebuffer(GL_READ_FRAMEBUFFER, resolve_fbo_);
- }
-
- bool IsApplicable() const {
- return GLTestHelper::HasExtension("GL_EXT_multisample_compatibility") &&
- GLTestHelper::HasExtension("GL_CHROMIUM_framebuffer_multisample") &&
- GLTestHelper::HasExtension("GL_OES_rgb8_rgba8");
- }
- GLuint sample_fbo_;
- GLuint resolve_fbo_;
- GLuint color_loc_;
-
- GLManager gl_;
-};
-
-TEST_F(EXTMultisampleCompatibilityTest, TestSimple) {
- if (!IsApplicable()) {
- return;
- }
-
- EXPECT_TRUE(glIsEnabled(GL_MULTISAMPLE_EXT));
- glDisable(GL_MULTISAMPLE_EXT);
- EXPECT_FALSE(glIsEnabled(GL_MULTISAMPLE_EXT));
- glEnable(GL_MULTISAMPLE_EXT);
- EXPECT_TRUE(glIsEnabled(GL_MULTISAMPLE_EXT));
-
- EXPECT_FALSE(glIsEnabled(GL_SAMPLE_ALPHA_TO_ONE_EXT));
- glEnable(GL_SAMPLE_ALPHA_TO_ONE_EXT);
- EXPECT_TRUE(glIsEnabled(GL_SAMPLE_ALPHA_TO_ONE_EXT));
- glDisable(GL_SAMPLE_ALPHA_TO_ONE_EXT);
- EXPECT_FALSE(glIsEnabled(GL_SAMPLE_ALPHA_TO_ONE_EXT));
-
- EXPECT_EQ(static_cast<GLenum>(GL_NO_ERROR), glGetError());
-}
-
-TEST_F(EXTMultisampleCompatibilityTest, DrawAndResolve) {
- // Test that disabling GL_MULTISAMPLE_EXT is handled correctly.
- if (!IsApplicable()) {
- return;
- }
- PrepareForDraw();
-
- static const float kBlue[] = {0.0f, 0.0f, 1.0f, 1.0f};
- static const float kGreen[] = {0.0f, 1.0f, 0.0f, 1.0f};
- static const float kRed[] = {1.0f, 0.0f, 0.0f, 1.0f};
-
- // Green: from top right to bottom left.
- glUniform4fv(color_loc_, 1, kGreen);
- glDrawArrays(GL_TRIANGLES, 0, 3);
-
- // Blue: from top left to bottom right.
- glUniform4fv(color_loc_, 1, kBlue);
- glDrawArrays(GL_TRIANGLES, 3, 3);
-
- // Red, without MSAA: from bottom left to top right.
- glDisable(GL_MULTISAMPLE_EXT);
- glUniform4fv(color_loc_, 1, kRed);
- glDrawArrays(GL_TRIANGLES, 6, 3);
-
- PrepareForVerify();
-
- // Top-left: Green triangle hits 50% of the samples. Blue hits 50% of the
- // samples. The pixel should be {0, 127, 127, 255}. For accuracy reasons,
- // Test only that multisampling is on, eg. that fractional results result
- // in <255 pixel value.
- uint8 r, g, b, a;
- GetPixel(0, kHeight - 1, &r, &g, &b, &a);
- EXPECT_EQ(0u, r);
- EXPECT_GT(255u, g);
- EXPECT_GT(255u, b);
- EXPECT_EQ(255u, a);
-
- // Top-right: Green triangle hits 50% of the samples. Red hits 100% of the
- // samples, since it is not multisampled. Should be {255, 0, 0, 255}.
- GetPixel(kWidth - 1, kHeight - 1, &r, &g, &b, &a);
- EXPECT_EQ(255u, r);
- EXPECT_EQ(0u, g);
- EXPECT_EQ(0u, b);
- EXPECT_EQ(255u, a);
-
- // Bottom-right: Blue triangle hits 50% of the samples. Red triangle
- // hits 100% of the samples. Should be {255, 0, 0, 255}.
- GetPixel(kWidth - 1, 0, &r, &g, &b, &a);
- EXPECT_EQ(255u, r);
- EXPECT_EQ(0u, g);
- EXPECT_EQ(0u, b);
- EXPECT_EQ(255u, a);
-
- // Low-left: Green triangle hits 50% of the samples. Blue hits 100% of the
- // samples. Red hits 100% of the samples, since it is not multisampled.
- // Should be {255, 0, 0, 255}.
- GetPixel(0, 0, &r, &g, &b, &a);
- EXPECT_EQ(255u, r);
- EXPECT_EQ(0u, g);
- EXPECT_EQ(0u, b);
- EXPECT_EQ(255u, a);
-
- // Middle point: Green triangle hits 50% of the samples, blue 50% of the
- // samples. Red does not hit.
- GetPixel(kWidth / 2 - 1, kHeight / 2, &r, &g, &b, &a);
- EXPECT_EQ(0u, r);
- EXPECT_GT(255u, g);
- EXPECT_GT(255u, b);
- EXPECT_EQ(255u, a);
-}
-
-TEST_F(EXTMultisampleCompatibilityTest, DrawAlphaOneAndResolve) {
- // Test that enabling GL_SAMPLE_ALPHA_TO_ONE_EXT affects rendering.
- if (!IsApplicable()) {
- return;
- }
-
- // SAMPLE_ALPHA_TO_ONE is specified to transform alpha values of
- // covered samples to 1.0. In order to detect it, we use non-1.0
- // alpha.
- static const float kBlue[] = {0.0f, 0.0f, 1.0f, 0.5f};
- static const float kGreen[] = {0.0f, 1.0f, 0.0f, 0.5f};
- static const float kRed[] = {1.0f, 0.0f, 0.0f, 0.5f};
-
- // Different drivers seem to behave differently with respect to
- // resulting alpha value. These might be due to different MSAA
- // sample counts causing different samples to hit. Testing exact or
- // even approximate sample values is not that easy. Thus, just test
- // representative positions which have fractional pixels, inspecting
- // that normal rendering is different to SAMPLE_ALPHA_TO_ONE
- // rendering.
- uint32 result[2][5];
-
- for (int pass = 0; pass < 2; ++pass) {
- PrepareForDraw();
- if (pass == 1) {
- glEnable(GL_SAMPLE_ALPHA_TO_ONE_EXT);
- }
- glUniform4fv(color_loc_, 1, kGreen);
- glDrawArrays(GL_TRIANGLES, 0, 3);
-
- glUniform4fv(color_loc_, 1, kBlue);
- glDrawArrays(GL_TRIANGLES, 3, 3);
-
- glDisable(GL_MULTISAMPLE_EXT);
- glUniform4fv(color_loc_, 1, kRed);
- glDrawArrays(GL_TRIANGLES, 6, 3);
-
- PrepareForVerify();
-
- // Top-left.
- result[pass][0] = GetPixel(0, kHeight - 1);
- // Top-right.
- result[pass][1] = GetPixel(kWidth - 1, kHeight - 1);
- // Bottom-right.
- result[pass][2] = GetPixel(kWidth - 1, 0);
- // Low-left.
- result[pass][3] = GetPixel(1, 1);
- // Middle point.
- result[pass][4] = GetPixel(kWidth / 2 - 1, kHeight / 2);
- }
- EXPECT_NE(result[0][0], result[1][0]);
- EXPECT_NE(result[0][1], result[1][1]);
- EXPECT_NE(result[0][2], result[1][2]);
- EXPECT_NE(result[0][3], result[1][3]);
- EXPECT_NE(result[0][4], result[1][4]);
-}
-
-} // namespace gpu
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