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[Test] (MG_Test): expect buffer-texture level queries to answer, not to error

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swung0x48
2026-08-20 13:50:45 -04:00
parent 02c9b8a32d
commit 685fd750c9
1 changed files with 13 additions and 7 deletions
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MobileGL/MG_Test/Texture/TextureTest.cpp
+13 -7
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@@ -4194,24 +4194,30 @@ TEST_F(TextureTest, CopyTexImage1DReportsUnsupportedInsteadOfTerminating) {
ExpectSingleGlError(GL_INVALID_OPERATION);
}
TEST_F(TextureTest, GetTexLevelParameterOnBufferStorageReportsErrorInsteadOfTerminating) {
// TextureStorageType is {Mipmap, Buffer} and the level queries only answer out of a mipmap
// chain, so every glGetTexLevelParameter* on a GL_TEXTURE_BUFFER texture reached a
// THROW_UNIMPL_EXCEPTION default: label and killed the process.
TEST_F(TextureTest, GetTexLevelParameterAnswersBufferStorageGeometry) {
// TextureStorageType is {Mipmap, Buffer} and the level queries used to answer only out of a
// mipmap chain, so every glGetTexLevelParameter* on a GL_TEXTURE_BUFFER texture reached a
// THROW_UNIMPL_EXCEPTION default: label and killed the process. It now answers out of the
// attached buffer range instead (GL 4.6 core 8.9): a buffer texture is one-dimensional, and
// with no buffer attached it addresses no texels at all.
GLuint texture = 0;
MG_Impl::GLImpl::CreateTextures(GL_TEXTURE_BUFFER, 1, &texture);
MG_Impl::GLImpl::BindTexture(GL_TEXTURE_BUFFER, texture);
MG_Impl::GLImpl::TexBuffer(GL_TEXTURE_BUFFER, GL_R8, 0);
DrainPendingGlErrors();
for (const GLenum pname : {GL_TEXTURE_WIDTH, GL_TEXTURE_HEIGHT, GL_TEXTURE_DEPTH}) {
const std::pair<GLenum, GLint> expectations[] = {
{GL_TEXTURE_WIDTH, 0}, {GL_TEXTURE_HEIGHT, 1}, {GL_TEXTURE_DEPTH, 1}};
for (const auto& [pname, expected] : expectations) {
GLint intParam = 0x20202020;
MG_Impl::GLImpl::GetTexLevelParameteriv(GL_TEXTURE_BUFFER, 0, pname, &intParam);
ExpectSingleGlError(GL_INVALID_OPERATION);
EXPECT_EQ(MG_Impl::GLImpl::GetError(), static_cast<GLenum>(GL_NO_ERROR));
EXPECT_EQ(intParam, expected) << "pname " << pname;
GLfloat floatParam = 12345.0f;
MG_Impl::GLImpl::GetTexLevelParameterfv(GL_TEXTURE_BUFFER, 0, pname, &floatParam);
ExpectSingleGlError(GL_INVALID_OPERATION);
EXPECT_EQ(MG_Impl::GLImpl::GetError(), static_cast<GLenum>(GL_NO_ERROR));
EXPECT_EQ(floatParam, static_cast<GLfloat>(expected)) << "pname " << pname;
}
}