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[Tests] reject undersized packed GPU readback destinations

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swung0x48
2026-09-20 11:56:58 -04:00
parent 859c0efb01
commit 7f9147aeab
1 changed files with 27 additions and 0 deletions
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MobileGL/MG_IntegrationTest/Scenarios/F1WireScenario.cpp
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@@ -146,6 +146,33 @@ TEST_F(F1WireScenario, TextureReadbackLargerThanAReplySlotContainsGpuWrites) {
}
}
TEST_F(F1WireScenario, TextureReadbackRejectsPackedDestinationOverflowBeforeWriting) {
if (!Ready()) return;
glTexStorage2D(GL_TEXTURE_2D, 1, GL_RGBA8, 1, 1);
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, texture, 0);
glClearColor(1, 0, 0, 1);
glClear(GL_COLOR_BUFFER_BIT);
glPixelStorei(GL_PACK_SKIP_PIXELS, 1);
std::array<GLubyte, 8> actual{1, 2, 3, 4, 5, 6, 7, 8};
const auto sentinel = actual;
glGetTextureImage(texture, 0, GL_RGBA, GL_UNSIGNED_BYTE, 4, actual.data());
EXPECT_EQ(glGetError(), GLenum(GL_INVALID_OPERATION));
EXPECT_EQ(actual, sentinel);
GLuint pbo = 0;
glGenBuffers(1, &pbo);
glBindBuffer(GL_PIXEL_PACK_BUFFER, pbo);
glBufferData(GL_PIXEL_PACK_BUFFER, 4, actual.data(), GL_DYNAMIC_READ);
glGetTexImage(GL_TEXTURE_2D, 0, GL_RGBA, GL_UNSIGNED_BYTE, nullptr);
EXPECT_EQ(glGetError(), GLenum(GL_INVALID_OPERATION));
glReadPixels(0, 0, 1, 1, GL_RGBA, GL_UNSIGNED_BYTE, nullptr);
EXPECT_EQ(glGetError(), GLenum(GL_INVALID_OPERATION));
glGetBufferSubData(GL_PIXEL_PACK_BUFFER, 0, 4, actual.data());
EXPECT_EQ(actual, sentinel);
glPixelStorei(GL_PACK_SKIP_PIXELS, 0);
glBindBuffer(GL_PIXEL_PACK_BUFFER, 0);
glDeleteBuffers(1, &pbo);
}
TEST_F(F1WireScenario, TextureAndFramebufferReadsPreservePackBufferPadding) {
if (!Ready()) return;
Attach(GL_RGBA8);