swung0x48/MobileGL
1
0
Fork 0
mirror of https://github.com/MobileGL-Dev/MobileGL synced 2026-09-11 05:38:31 +09:00
Code Issues Packages Projects Releases Wiki Activity

[Fix, Test] (MG_State, MG_Impl, MG_IntegrationTest): a double uniform initializer no longer reads zero

Browse Source
This commit is contained in:
swung0x48
2026-08-12 06:41:54 -04:00
parent 796a57a115
commit 46fbd837b3
3 changed files with 55 additions and 3 deletions
Download Patch File Download Diff File Expand all files Collapse all files
MobileGL/MG_IntegrationTest/Scenarios/DoublePrecisionScenario.cpp
+39
View File
@@ -314,6 +314,45 @@ void main() {
EXPECT_EQ(glGetError(), static_cast<GLenum>(GL_NO_ERROR));
}
TEST_F(DoublePrecisionScenario, ADoubleUniformKeepsItsDeclaredInitializer) {
if (!Ready()) return;
// A declared initializer is seeded straight into the uniform shadow at link, and the
// seeding used to skip 64-bit floats outright ("no 32-bit shadow encoding") - which
// was true before the demotion and silently left every such uniform reading zero.
const char* source = R"(#version 430 core
layout(local_size_x = 1) in;
uniform double uSeeded = 2.5lf;
uniform dvec3 uSeededVector = dvec3(4.0lf, 5.0lf, 6.0lf);
layout(std430, binding = 0) buffer Output {
float g_out[];
};
void main() {
g_out[0] = float(uSeeded);
g_out[1] = float(uSeededVector.x);
g_out[2] = float(uSeededVector.y);
g_out[3] = float(uSeededVector.z);
}
)";
const GLuint program = CompileComputeProgram(source);
ASSERT_NE(program, 0u) << m_buildLog;
glUseProgram(program);
glDispatchCompute(1, 1, 1);
glMemoryBarrier(GL_BUFFER_UPDATE_BARRIER_BIT);
std::vector<float> values(4, -1.0f);
glBindBuffer(GL_SHADER_STORAGE_BUFFER, m_output);
glGetBufferSubData(GL_SHADER_STORAGE_BUFFER, 0, 4 * sizeof(float), values.data());
glBindBuffer(GL_SHADER_STORAGE_BUFFER, 0);
glUseProgram(0);
glDeleteProgram(program);
EXPECT_FLOAT_EQ(values[0], 2.5f) << "scalar double initializer";
EXPECT_FLOAT_EQ(values[1], 4.0f) << "dvec3 initializer .x";
EXPECT_FLOAT_EQ(values[2], 5.0f) << "dvec3 initializer .y";
EXPECT_FLOAT_EQ(values[3], 6.0f) << "dvec3 initializer .z";
EXPECT_EQ(glGetError(), static_cast<GLenum>(GL_NO_ERROR));
}
TEST_F(DoublePrecisionScenario, TheFp64ExtensionIsNotAdvertised) {
if (!Ready()) return;
// The shader above compiled, linked and ran without the extension string, which is