Unified PSO validation semantics across D3D12 and OpenGL backends:
- IsValid() returns whether PSO is ready to use
- EnsureValid() ensures PSO is valid (compiles if needed)
Behavior by backend:
- D3D12: IsValid=false after creation, true after EnsureValid() with shaders
- OpenGL: IsValid always=true (immediate model)
Also added test_pipeline_state.cpp with 10 tests for RHIPipelineState.
- Add ShaderLanguage enum (HLSL, GLSL, SPIRV)
- Extend ShaderCompileDesc with source/sourceLanguage fields
- D3D12Device::CompileShader supports both file and embedded source
- OpenGLDevice::CompileShader supports embedded GLSL source
- Refactor test_shader.cpp to use embedded source for both backends
This enables consistent shader compilation across D3D12 and OpenGL
backends while maintaining backend-specific shader language support.
- Add RHIDescriptorSet base class with Update/UpdateSampler/GetNativeHandle
- Add RHIDescriptorPool with AllocateSet/FreeSet methods
- Add SetGraphicsDescriptorSets/SetComputeDescriptorSets to RHICommandList
- Implement D3D12DescriptorSet using descriptor heap allocation
- Implement OpenGLDescriptorSet using TextureUnitAllocator
- Add CreateDescriptorPool/CreateDescriptorSet factory methods to RHIDevice
- Fix unit test SetVertexBuffer -> SetVertexBuffers API
- Add SetVertexBuffer convenience method for D3D12 backward compatibility
- Update CMakeLists.txt with new source files
- Remove void* parameters from RHICommandList abstract interface
- TransitionBarrier, SetVertexBuffer, SetIndexBuffer, SetRenderTargets,
ClearRenderTarget, ClearDepthStencil, CopyResource now use RHIResourceView*
- SetPipelineState now uses RHIPipelineState* instead of void*
- Simplified SetVertexBuffer to 3 params, SetIndexBuffer to 2 params
- Add internal D3D12 APIs for native type support (low-level escape hatch)
- Fix OpenGL SetRenderTargets to call glDrawBuffers for MRT support
- Update tests to match new interface signatures
All 289 RHI tests pass (158 unit + 64 OpenGL backend + 58 D3D12 backend + 8 integration + 1 disabled)
- Create unified RHIResourceView base interface with type-specific Initialize methods
- Implement D3D12ResourceView with RTV/DSV/SRV/UAV/CBV support
- Implement OpenGL ResourceView simulation layer using FBO, texture units, and UBO
- Add OpenGLTextureUnitAllocator for managing texture unit bindings
- Add OpenGLUniformBufferManager for UBO binding points
- Add OpenGLFramebuffer for FBO management
- Remove deprecated D3D12 view classes (RenderTargetView, DepthStencilView, etc.)
- Fix ExecuteCommandLists type confusion bug by adding GetNativeHandle to RHICommandList
- Fix test bug where Close() was called before ExecuteCommandLists
- Update all integration tests to use new D3D12ResourceView class
- All tests pass: 144 unit tests + 8 integration tests
- Remove IsSignaled() from RHIFence interface (semantic inconsistency)
- Remove Reset() from OpenGL implementation (no D3D12 counterpart)
- OpenGL Fence now uses single GLsync + CPU counters for timeline simulation
- OpenGL Fence Initialize() now accepts uint64_t initialValue (was bool)
- Add comprehensive timeline semantics tests for all backends:
- Signal increment/decrement scenarios
- Multiple signals
- Wait smaller than completed value
- GetCompletedValue stages verification
- Update documentation to reflect actual implementation
- Rename D3D12Enum.h to D3D12Enums.h for naming consistency
- Fix OpenGL unit test GLAD initialization by using gladLoadGL()
instead of gladLoadGLLoader(wglGetProcAddress) for fallback support
- Migrate remaining tests to use gtest_discover_tests for granular
test discovery (math, core, containers, memory, threading, debug,
components, scene, resources, input, opengl)
- Remove obsolete TEST_RESOURCES_DIR and copy_directory commands
from OpenGL unit test CMakeLists (minimal/Res doesn't exist)
- Update TEST_SPEC.md with performance metrics and per-module
build/test commands for faster development workflow
- Update CMake path references to use lowercase paths
- Add RHITestFixture with RHI_BACKEND env var support for backend selection
- Add unit tests for: Device, Buffer, Texture, SwapChain, CommandList, CommandQueue, Shader, Fence, Sampler
- Tests can run against D3D12 or OpenGL backends via RHI_BACKEND env var
- Add integration folder placeholder for future integration tests
