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[Feat] (Diligent, MG_State): wire textures, samplers, global UBO, and user framebuffers

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- Auto-sync ITextureObject to Diligent textures with dirty-level uploads
- Translate SamplerObject/unit sampler state into Diligent samplers
- Bind the synthesized MGL_GLOBAL_UBO for default-block glUniform data
- Resolve bound draw/read framebuffers to Diligent RTV/DSV for draws/clears/readback
- Wire DrawRangeElements, DrawRangeElementsBaseVertex, MultiDrawArrays, MultiDrawElements
- Add real-texture, uniform, and user-framebuffer tests; 8 Diligent tests pass
This commit is contained in:
BZLZHH
2026-08-23 09:09:03 +08:00
parent 1748da0443
commit 827d46cad3
5 changed files with 996 additions and 35 deletions
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MobileGL/MG_Backend/Diligent/Renderer/DiligentRenderer.h
+37
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@@ -31,6 +31,13 @@ namespace Diligent {
struct IShaderResourceBinding;
}
namespace MobileGL::MG_State::GLState {
class ITextureObject;
class SamplerObject;
class ProgramObject;
class RenderbufferObject;
}
namespace MobileGL::MG_Backend::DiligentBackend {
// Minimal real Diligent renderer used to prove the GL 3.2 basic path:
// clear an offscreen color target, draw a hardcoded triangle, and read
@@ -59,11 +66,34 @@ namespace MobileGL::MG_Backend::DiligentBackend {
::Diligent::IDeviceContext* GetContext() const { return m_pContext; }
private:
struct TextureResource {
::Diligent::RefCntAutoPtr<::Diligent::ITexture> Texture;
::Diligent::RefCntAutoPtr<::Diligent::ITextureView> SRV;
::Diligent::RefCntAutoPtr<::Diligent::ITextureView> RTV;
::Diligent::RefCntAutoPtr<::Diligent::ITextureView> DSV;
Uint64 ContentVersion = 0;
Uint16 ParamsVersion = 0;
Bool IsDepth = false;
};
struct SamplerResource {
::Diligent::RefCntAutoPtr<::Diligent::ISampler> Sampler;
Uint16 Version = 0;
};
Bool CreateOffscreenTargets();
Bool CreatePipeline();
Bool CreateVertexBuffer();
Bool CreatePipelineFromState(GLenum mode);
Bool UploadVertexDataFromState(GLenum mode, GLint first, GLsizei count, GLenum type, const void* indices);
::Diligent::ITextureView* SyncTexture(MG_State::GLState::ITextureObject& texture);
::Diligent::ITextureView* SyncTextureForAttachment(MG_State::GLState::ITextureObject& texture, Bool depth);
::Diligent::ITextureView* SyncRenderbuffer(MG_State::GLState::RenderbufferObject& renderbuffer);
::Diligent::ISampler* SyncSampler(const MG_State::GLState::SamplerObject& sampler);
Bool BindShaderResourcesFromState(const MG_State::GLState::ProgramObject& program);
Bool UploadUBOFromState(const MG_State::GLState::ProgramObject& program);
Bool ResolveCurrentRenderTargets(Vector<::Diligent::ITextureView*>& rtvs,
::Diligent::ITextureView*& dsv);
::Diligent::IRenderDevice* m_pDevice = nullptr;
::Diligent::IDeviceContext* m_pContext = nullptr;
@@ -77,6 +107,13 @@ namespace MobileGL::MG_Backend::DiligentBackend {
::Diligent::RefCntAutoPtr<::Diligent::IShaderResourceBinding> m_pStateSRB;
::Diligent::RefCntAutoPtr<::Diligent::IPipelineState> m_pPSO;
::Diligent::RefCntAutoPtr<::Diligent::IBuffer> m_pVertexBuffer;
::Diligent::RefCntAutoPtr<::Diligent::IBuffer> m_pUBO;
Uint32 m_uboSize = 0;
Uint32 m_uboContentVersion = 0;
Uint64 m_uboProgramLifetimeId = 0;
UnorderedMap<Uint64, TextureResource> m_textureCache;
UnorderedMap<Uint64, SamplerResource> m_samplerCache;
UnorderedMap<Uint32, TextureResource> m_renderbufferCache;
Uint32 m_width = 256;
Uint32 m_height = 256;
Uint32 m_lastDrawVertexCount = 0;