swung0x48/MobileGL
1
0
Fork 0
mirror of https://github.com/MobileGL-Dev/MobileGL synced 2026-09-09 12:48:32 +09:00
Code Issues Packages Projects Releases Wiki Activity

[Test] (BackendLoader, DirectGLES): cover the per-stage storage block limits and the mg_IndirectParams injection gate

Browse Source
This commit is contained in:
swung0x48
2026-08-20 13:16:29 -04:00
parent 8899f065f4
commit 31a5da6190
4 changed files with 316 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files
MobileGL/MG_Test/SanityTest.cpp
+16
View File
@@ -365,6 +365,13 @@ TEST(DirectGLESSanity, RebasesInstanceIdWhenIndirectDrawsLeakBaseInstance) {
// MaxShaderStorageBufferBindings - 1 = 12, so a regression that stops reading the
// probed cap and falls back to the struct default would surface as "binding = 7".
caps.MaxShaderStorageBufferBindings = 13;
// The indirect lowering reads its baseInstance through a storage block declared in the
// VERTEX stage, which is optional in both APIs and which the GLESCapabilities default
// (0, the spec minimum) therefore denies. This suite is pinning the shape of that
// lowering, so it has to describe a driver that can actually have it - see
// VertexStageStorageBlockUsable and the BaseInstanceInjectionGate suite for the
// zero case.
caps.MaxVertexShaderStorageBlocks = 1;
const MobileGL::String source = R"(#version 310 es
highp int mg_BaseInstanceLowered;
@@ -403,6 +410,9 @@ TEST(DirectGLESSanity, TheIndirectWordIndexIsOneBasedSoItsUnwrittenValueMeansNot
auto& caps = MobileGL::MG_Backend::DirectGLES::g_GLESCapabilities;
caps.IndirectDrawInstanceIdIncludesBaseInstance = false;
caps.MaxShaderStorageBufferBindings = 13;
// See RebasesInstanceIdWhenIndirectDrawsLeakBaseInstance: without a vertex-stage
// storage block there is no word index to be one-based about.
caps.MaxVertexShaderStorageBlocks = 1;
const MobileGL::String source = R"(#version 310 es
highp int mg_BaseInstanceLowered;
@@ -428,6 +438,10 @@ TEST(DirectGLESSanity, KeepsInstanceIdWhenIndirectDrawsAreConforming) {
auto& caps = MobileGL::MG_Backend::DirectGLES::g_GLESCapabilities;
caps.IndirectDrawInstanceIdIncludesBaseInstance = false;
caps.MaxShaderStorageBufferBindings = 13;
// Set explicitly even though the assertions below would also hold on the degraded path:
// this case is about a CONFORMING driver leaving gl_InstanceID alone, and it would be a
// silent weakening for it to be exercising the no-storage-block fallback instead.
caps.MaxVertexShaderStorageBlocks = 1;
const MobileGL::String source = R"(#version 310 es
highp int mg_BaseInstanceLowered;
@@ -442,6 +456,8 @@ void main() {
EXPECT_EQ(rewritten.find("mg_ZeroBasedInstanceID"), MobileGL::String::npos);
EXPECT_NE(rewritten.find("int instance = gl_InstanceID + mg_BaseInstanceLowered;"), MobileGL::String::npos);
// The indirect view is present on this driver, so the fallback must NOT have fired.
EXPECT_NE(rewritten.find("buffer mg_IndirectParams"), MobileGL::String::npos);
}
TEST(DirectGLESSanity, LeavesDrawParameterGlobalsAloneOutsideVertexShaders) {