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use location numbers for vertex input attributes, instead of name-based binding.

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- add 'location' named field to buffer and mesh vertex format tables, replaces 'name' field.
- location numbers are expected to match 'layout (location = #)' qualifiers in vertex inputs in shader code.
- deprecate vertex inputs in shader code that don't have layout location qualifiers.
- love's default vertex attributes use location 0 for position, 1 for texcoord, and 2 for color.
- add new variants of Mesh:attachAttribute, setAttributeEnabled, and isAttributeEnabled which take location numbers instead of names.

Improves draw performance in vulkan and metal backends.
This commit is contained in:
Sasha Szpakowski
2024-09-07 18:06:03 -03:00
parent c7b4ebbc55
commit 50ff1e4d2b
31 changed files with 683 additions and 258 deletions
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src/modules/graphics/metal/Graphics.h
+2 -2
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@@ -75,7 +75,7 @@ public:
void draw(const DrawCommand &cmd) override;
void draw(const DrawIndexedCommand &cmd) override;
void drawQuads(int start, int count, const VertexAttributes &attributes, const BufferBindings &buffers, love::graphics::Texture *texture) override;
void drawQuads(int start, int count, VertexAttributesID attributesID, const BufferBindings &buffers, love::graphics::Texture *texture) override;
void clear(OptionalColorD color, OptionalInt stencil, OptionalDouble depth) override;
void clear(const std::vector<OptionalColorD> &colors, OptionalInt stencil, OptionalDouble depth) override;
@@ -209,7 +209,7 @@ private:
void endPass(bool presenting);
id<MTLDepthStencilState> getCachedDepthStencilState(const DepthState &depth, const StencilState &stencil);
void applyRenderState(id<MTLRenderCommandEncoder> renderEncoder, const VertexAttributes &attributes);
void applyRenderState(id<MTLRenderCommandEncoder> renderEncoder, VertexAttributesID attributesID);
bool applyShaderUniforms(id<MTLComputeCommandEncoder> encoder, love::graphics::Shader *shader);
void applyShaderUniforms(id<MTLRenderCommandEncoder> renderEncoder, love::graphics::Shader *shader, Texture *maintex);