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[Feat, Test] (Diligent, MG_Test): add basic texture binding and textured state-draw test

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- Add CreateTestTexture(): creates an RGBA8 texture, SRV and default sampler,
  and attaches the sampler to the SRV.
- State PSOs now bind a static pixel-shader variable 'g_Texture' to the test
  texture and commit shader resources before drawing.
- Add DrawsTexturedFromMobileGLState test using a real GL program with
  sampler2D and interleaved position+UV attributes.
- All 4 Diligent local tests pass on Turnip Adreno 750.
This commit is contained in:
BZLZHH
2026-08-18 14:20:02 +08:00
parent 98f2a55214
commit 08ca897a07
3 changed files with 139 additions and 0 deletions
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MobileGL/MG_Backend/Diligent/Renderer/DiligentRenderer.h
+9
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@@ -27,6 +27,8 @@ namespace Diligent {
struct ITextureView;
struct IPipelineState;
struct IBuffer;
struct ISampler;
struct IShaderResourceBinding;
}
namespace MobileGL::MG_Backend::DiligentBackend {
@@ -44,6 +46,9 @@ namespace MobileGL::MG_Backend::DiligentBackend {
void ClearDepth(Float depth);
void DrawTriangle();
void DrawVertices(const Float* vertices, Uint32 vertexCount);
// Creates a simple 2D RGBA8 texture from CPU data and makes it available
// to state PSOs under the shader variable name "g_Texture".
Bool CreateTestTexture(const void* data, Uint32 width, Uint32 height);
// Draws using the live MG_State GL context: current program, VAO and
// bound buffers. This is the front-end emulation entry point.
void DrawFromState(GLenum mode, GLint first, GLsizei count, GLenum type, const void* indices);
@@ -66,6 +71,10 @@ namespace MobileGL::MG_Backend::DiligentBackend {
::Diligent::RefCntAutoPtr<::Diligent::ITextureView> m_pColorRTV;
::Diligent::RefCntAutoPtr<::Diligent::ITexture> m_pDepthTarget;
::Diligent::RefCntAutoPtr<::Diligent::ITextureView> m_pDepthDSV;
::Diligent::RefCntAutoPtr<::Diligent::ITexture> m_pTestTexture;
::Diligent::RefCntAutoPtr<::Diligent::ITextureView> m_pTestSRV;
::Diligent::RefCntAutoPtr<::Diligent::ISampler> m_pTestSampler;
::Diligent::RefCntAutoPtr<::Diligent::IShaderResourceBinding> m_pStateSRB;
::Diligent::RefCntAutoPtr<::Diligent::IPipelineState> m_pPSO;
::Diligent::RefCntAutoPtr<::Diligent::IBuffer> m_pVertexBuffer;
Uint32 m_width = 256;