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Add regression test for VVL AlphaToCoverage bug

Browse Source 
https://github.com/KhronosGroup/Vulkan-ValidationLayers/issues/5520

Bug: b/264062978
Change-Id: I0619cb28495c16d0d8d83635ad7a93f0c47cea6b
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/4374098
Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org>
Auto-Submit: Roman Lavrov <romanl@google.com>
Commit-Queue: Roman Lavrov <romanl@google.com>
This commit is contained in:
Roman Lavrov
2023-03-27 10:10:11 -04:00
committed by Angle LUCI CQ
parent a811356480
commit 59b0c7d718
1 changed files with 13 additions and 1 deletions
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14
src/tests/gl_tests/GLSLTest.cpp
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@@ -5177,7 +5177,7 @@ void main(void)
glUseProgram(verifyProgram);
constexpr std::array<GLfloat, kImage2Size + kImageRows *kImageCols> kOutputInitData = {};
constexpr std::array<GLfloat, kImage2Size + kImageRows * kImageCols> kOutputInitData = {};
GLBuffer outputBuffer;
glBindBuffer(GL_SHADER_STORAGE_BUFFER, outputBuffer);
glBufferData(GL_SHADER_STORAGE_BUFFER, sizeof(kOutputInitData), kOutputInitData.data(),
@@ -10293,6 +10293,18 @@ TEST_P(GLSLTest, FragData)
EXPECT_PIXEL_COLOR_EQ(0, 0, GLColor::red);
}
// Tests using gl_FragData[0] instead of gl_FragColor with GL_SAMPLE_ALPHA_TO_COVERAGE
// Regression test for https://github.com/KhronosGroup/Vulkan-ValidationLayers/issues/5520
TEST_P(GLSLTest, FragData_AlphaToCoverage)
{
constexpr char kFS[] = R"(void main() { gl_FragData[0] = vec4(1, 0, 0, 1); })";
ANGLE_GL_PROGRAM(program, essl1_shaders::vs::Simple(), kFS);
glEnable(GL_SAMPLE_ALPHA_TO_COVERAGE);
drawQuad(program, essl1_shaders::PositionAttrib(), 0.5f);
EXPECT_GL_NO_ERROR();
EXPECT_PIXEL_COLOR_EQ(0, 0, GLColor::red);
}
// Test angle can handle big initial stack size with dynamic stack allocation.
TEST_P(GLSLTest, MemoryExhaustedTest)
{