RHI: Add Compute/Dispatch unit tests (P1-7) and fix shader type bugs

Bug fixes:
- D3D12Shader::Compile: Set m_type based on target string (cs_/vs_/ps_/gs_)
- OpenGLShader::Compile: Parse target parameter to determine shader type
- OpenGLShader::CompileCompute: Set m_type = ShaderType::Compute
- D3D12CommandList::SetPipelineState: Use correct PSO handle for Compute

New tests (test_compute.cpp, 8 tests):
- ComputeShader_Compile_ValidShader
- ComputeShader_GetType_ReturnsCompute
- ComputeShader_Shutdown_Invalidates
- PipelineState_SetComputeShader
- PipelineState_HasComputeShader_ReturnsTrue
- PipelineState_GetType_Compute
- PipelineState_EnsureValid_Compute
- CommandList_Dispatch_Basic

Test results: 232/232 passed (D3D12: 116, OpenGL: 116)

engine/src/RHI/D3D12/D3D12CommandList.cpp

@@ -178,7 +178,13 @@ void D3D12CommandList::AliasBarrier(ID3D12Resource* beforeResource, ID3D12Resour
 
 void D3D12CommandList::SetPipelineState(RHIPipelineState* pso) {
     if (!pso) return;
-    SetPipelineStateInternal(static_cast<ID3D12PipelineState*>(pso->GetNativeHandle()));
+    
+    if (pso->GetType() == PipelineType::Compute) {
+        D3D12PipelineState* d3d12Pso = static_cast<D3D12PipelineState*>(pso);
+        SetPipelineStateInternal(d3d12Pso->GetComputePipelineState());
+    } else {
+        SetPipelineStateInternal(static_cast<ID3D12PipelineState*>(pso->GetNativeHandle()));
+    }
 }
 
 void D3D12CommandList::SetPipelineState(ID3D12PipelineState* pso) {

engine/src/RHI/D3D12/D3D12Shader.cpp

@@ -55,6 +55,16 @@ bool D3D12Shader::Compile(const void* sourceData, size_t sourceSize, const char*
         return false;
     }
 
+    if (strstr(target, "vs_")) {
+        m_type = ShaderType::Vertex;
+    } else if (strstr(target, "ps_")) {
+        m_type = ShaderType::Fragment;
+    } else if (strstr(target, "gs_")) {
+        m_type = ShaderType::Geometry;
+    } else if (strstr(target, "cs_")) {
+        m_type = ShaderType::Compute;
+    }
+
     m_uniformsCached = false;
     return true;
 }

engine/src/RHI/OpenGL/OpenGLShader.cpp

@@ -153,6 +153,7 @@ bool OpenGLShader::CompileCompute(const char* computeSource) {
     
     glDeleteShader(compute);
     
+    m_type = ShaderType::Compute;
     m_uniformsCached = false;
     
     return true;
@@ -219,7 +220,20 @@ bool OpenGLShader::Compile(const void* sourceData, size_t sourceSize, const char
     if (!sourceData || sourceSize == 0) {
         return false;
     }
-    return Compile(static_cast<const char*>(sourceData), ShaderType::Fragment);
+    
+    ShaderType type = ShaderType::Fragment;
+    if (target) {
+        if (strstr(target, "vs_")) {
+            type = ShaderType::Vertex;
+        } else if (strstr(target, "ps_")) {
+            type = ShaderType::Fragment;
+        } else if (strstr(target, "gs_")) {
+            type = ShaderType::Geometry;
+        } else if (strstr(target, "cs_")) {
+            type = ShaderType::Compute;
+        }
+    }
+    return Compile(static_cast<const char*>(sourceData), type);
 }
 
 void OpenGLShader::Shutdown() {

tests/RHI/unit/CMakeLists.txt

@@ -19,6 +19,7 @@ set(TEST_SOURCES
     test_fence.cpp
     test_sampler.cpp
     test_descriptor.cpp
+    test_compute.cpp
     ${CMAKE_SOURCE_DIR}/tests/opengl/package/src/glad.c
 )
 

tests/RHI/unit/test_compute.cpp

@@ -0,0 +1,279 @@
+#include "fixtures/RHITestFixture.h"
+#include "XCEngine/RHI/RHIShader.h"
+#include "XCEngine/RHI/RHIPipelineState.h"
+#include <cstring>
+
+using namespace XCEngine::RHI;
+
+TEST_P(RHITestFixture, ComputeShader_Compile_ValidShader) {
+    ShaderCompileDesc desc = {};
+    if (GetBackendType() == RHIType::D3D12) {
+        desc.fileName = L"tests/RHI/D3D12/integration/quad/Res/Shader/quad.hlsl";
+        desc.entryPoint = L"MainCS";
+        desc.profile = L"cs_5_0";
+    } else {
+        desc.sourceLanguage = ShaderLanguage::GLSL;
+        static const char* cs = R"(
+            #version 460
+            layout(local_size_x = 1, local_size_y = 1, local_size_z = 1) in;
+            void main() {
+            }
+        )";
+        desc.source.assign(cs, cs + strlen(cs));
+    }
+
+    RHIShader* shader = GetDevice()->CompileShader(desc);
+    if (shader != nullptr) {
+        EXPECT_TRUE(shader->IsValid());
+        EXPECT_EQ(shader->GetType(), ShaderType::Compute);
+        shader->Shutdown();
+        delete shader;
+    }
+}
+
+TEST_P(RHITestFixture, ComputeShader_GetType_ReturnsCompute) {
+    ShaderCompileDesc desc = {};
+    if (GetBackendType() == RHIType::D3D12) {
+        desc.fileName = L"tests/RHI/D3D12/integration/quad/Res/Shader/quad.hlsl";
+        desc.entryPoint = L"MainCS";
+        desc.profile = L"cs_5_0";
+    } else {
+        desc.sourceLanguage = ShaderLanguage::GLSL;
+        static const char* cs = R"(
+            #version 460
+            layout(local_size_x = 1, local_size_y = 1, local_size_z = 1) in;
+            void main() {
+            }
+        )";
+        desc.source.assign(cs, cs + strlen(cs));
+    }
+
+    RHIShader* shader = GetDevice()->CompileShader(desc);
+    if (shader != nullptr) {
+        EXPECT_EQ(shader->GetType(), ShaderType::Compute);
+        shader->Shutdown();
+        delete shader;
+    }
+}
+
+TEST_P(RHITestFixture, ComputeShader_Shutdown_Invalidates) {
+    ShaderCompileDesc desc = {};
+    if (GetBackendType() == RHIType::D3D12) {
+        desc.fileName = L"tests/RHI/D3D12/integration/quad/Res/Shader/quad.hlsl";
+        desc.entryPoint = L"MainCS";
+        desc.profile = L"cs_5_0";
+    } else {
+        desc.sourceLanguage = ShaderLanguage::GLSL;
+        static const char* cs = R"(
+            #version 460
+            layout(local_size_x = 1, local_size_y = 1, local_size_z = 1) in;
+            void main() {
+            }
+        )";
+        desc.source.assign(cs, cs + strlen(cs));
+    }
+
+    RHIShader* shader = GetDevice()->CompileShader(desc);
+    if (shader != nullptr) {
+        EXPECT_TRUE(shader->IsValid());
+        shader->Shutdown();
+        EXPECT_FALSE(shader->IsValid());
+        delete shader;
+    }
+}
+
+TEST_P(RHITestFixture, PipelineState_SetComputeShader) {
+    GraphicsPipelineDesc desc = {};
+    RHIPipelineState* pso = GetDevice()->CreatePipelineState(desc);
+    if (pso == nullptr) {
+        return;
+    }
+
+    ShaderCompileDesc shaderDesc = {};
+    if (GetBackendType() == RHIType::D3D12) {
+        shaderDesc.fileName = L"tests/RHI/D3D12/integration/quad/Res/Shader/quad.hlsl";
+        shaderDesc.entryPoint = L"MainCS";
+        shaderDesc.profile = L"cs_5_0";
+    } else {
+        shaderDesc.sourceLanguage = ShaderLanguage::GLSL;
+        static const char* cs = R"(
+            #version 460
+            layout(local_size_x = 1, local_size_y = 1, local_size_z = 1) in;
+            void main() {
+            }
+        )";
+        shaderDesc.source.assign(cs, cs + strlen(cs));
+    }
+
+    RHIShader* computeShader = GetDevice()->CompileShader(shaderDesc);
+    if (computeShader != nullptr) {
+        pso->SetComputeShader(computeShader);
+        EXPECT_TRUE(pso->HasComputeShader());
+        computeShader->Shutdown();
+        delete computeShader;
+    }
+
+    pso->Shutdown();
+    delete pso;
+}
+
+TEST_P(RHITestFixture, PipelineState_HasComputeShader_ReturnsTrue) {
+    GraphicsPipelineDesc desc = {};
+    RHIPipelineState* pso = GetDevice()->CreatePipelineState(desc);
+    if (pso == nullptr) {
+        return;
+    }
+
+    EXPECT_FALSE(pso->HasComputeShader());
+
+    ShaderCompileDesc shaderDesc = {};
+    if (GetBackendType() == RHIType::D3D12) {
+        shaderDesc.fileName = L"tests/RHI/D3D12/integration/quad/Res/Shader/quad.hlsl";
+        shaderDesc.entryPoint = L"MainCS";
+        shaderDesc.profile = L"cs_5_0";
+    } else {
+        shaderDesc.sourceLanguage = ShaderLanguage::GLSL;
+        static const char* cs = R"(
+            #version 460
+            layout(local_size_x = 1, local_size_y = 1, local_size_z = 1) in;
+            void main() {
+            }
+        )";
+        shaderDesc.source.assign(cs, cs + strlen(cs));
+    }
+
+    RHIShader* computeShader = GetDevice()->CompileShader(shaderDesc);
+    if (computeShader != nullptr) {
+        pso->SetComputeShader(computeShader);
+        EXPECT_TRUE(pso->HasComputeShader());
+        computeShader->Shutdown();
+        delete computeShader;
+    }
+
+    pso->Shutdown();
+    delete pso;
+}
+
+TEST_P(RHITestFixture, PipelineState_GetType_Compute) {
+    GraphicsPipelineDesc desc = {};
+    RHIPipelineState* pso = GetDevice()->CreatePipelineState(desc);
+    if (pso == nullptr) {
+        return;
+    }
+
+    EXPECT_EQ(pso->GetType(), PipelineType::Graphics);
+
+    ShaderCompileDesc shaderDesc = {};
+    if (GetBackendType() == RHIType::D3D12) {
+        shaderDesc.fileName = L"tests/RHI/D3D12/integration/quad/Res/Shader/quad.hlsl";
+        shaderDesc.entryPoint = L"MainCS";
+        shaderDesc.profile = L"cs_5_0";
+    } else {
+        shaderDesc.sourceLanguage = ShaderLanguage::GLSL;
+        static const char* cs = R"(
+            #version 460
+            layout(local_size_x = 1, local_size_y = 1, local_size_z = 1) in;
+            void main() {
+            }
+        )";
+        shaderDesc.source.assign(cs, cs + strlen(cs));
+    }
+
+    RHIShader* computeShader = GetDevice()->CompileShader(shaderDesc);
+    if (computeShader != nullptr) {
+        pso->SetComputeShader(computeShader);
+        EXPECT_EQ(pso->GetType(), PipelineType::Compute);
+        computeShader->Shutdown();
+        delete computeShader;
+    }
+
+    pso->Shutdown();
+    delete pso;
+}
+
+TEST_P(RHITestFixture, PipelineState_EnsureValid_Compute) {
+    GraphicsPipelineDesc desc = {};
+    RHIPipelineState* pso = GetDevice()->CreatePipelineState(desc);
+    if (pso == nullptr) {
+        return;
+    }
+
+    ShaderCompileDesc shaderDesc = {};
+    if (GetBackendType() == RHIType::D3D12) {
+        shaderDesc.fileName = L"tests/RHI/D3D12/integration/quad/Res/Shader/quad.hlsl";
+        shaderDesc.entryPoint = L"MainCS";
+        shaderDesc.profile = L"cs_5_0";
+    } else {
+        shaderDesc.sourceLanguage = ShaderLanguage::GLSL;
+        static const char* cs = R"(
+            #version 460
+            layout(local_size_x = 1, local_size_y = 1, local_size_z = 1) in;
+            void main() {
+            }
+        )";
+        shaderDesc.source.assign(cs, cs + strlen(cs));
+    }
+
+    RHIShader* computeShader = GetDevice()->CompileShader(shaderDesc);
+    if (computeShader != nullptr) {
+        pso->SetComputeShader(computeShader);
+        
+        if (GetBackendType() == RHIType::D3D12) {
+            EXPECT_FALSE(pso->IsValid());
+            pso->EnsureValid();
+        } else {
+            EXPECT_TRUE(pso->IsValid());
+        }
+        
+        computeShader->Shutdown();
+        delete computeShader;
+    }
+
+    pso->Shutdown();
+    delete pso;
+}
+
+TEST_P(RHITestFixture, CommandList_Dispatch_Basic) {
+    RHICommandList* cmdList = GetDevice()->CreateCommandList({});
+    ASSERT_NE(cmdList, nullptr);
+    
+    cmdList->Reset();
+    
+    GraphicsPipelineDesc desc = {};
+    RHIPipelineState* pso = GetDevice()->CreatePipelineState(desc);
+    
+    if (pso != nullptr) {
+        ShaderCompileDesc shaderDesc = {};
+        if (GetBackendType() == RHIType::D3D12) {
+            shaderDesc.fileName = L"tests/RHI/D3D12/integration/quad/Res/Shader/quad.hlsl";
+            shaderDesc.entryPoint = L"MainCS";
+            shaderDesc.profile = L"cs_5_0";
+        } else {
+            shaderDesc.sourceLanguage = ShaderLanguage::GLSL;
+            static const char* cs = R"(
+                #version 460
+                layout(local_size_x = 1, local_size_y = 1, local_size_z = 1) in;
+                void main() {
+                }
+            )";
+            shaderDesc.source.assign(cs, cs + strlen(cs));
+        }
+
+        RHIShader* computeShader = GetDevice()->CompileShader(shaderDesc);
+        if (computeShader != nullptr) {
+            pso->SetComputeShader(computeShader);
+            cmdList->SetPipelineState(pso);
+            cmdList->Dispatch(1, 1, 1);
+            
+            computeShader->Shutdown();
+            delete computeShader;
+        }
+        
+        pso->Shutdown();
+        delete pso;
+    }
+    
+    cmdList->Close();
+    cmdList->Shutdown();
+    delete cmdList;
+}