From 2385b5d819583d1e3f7b19be8491a9d5fa5f1158 Mon Sep 17 00:00:00 2001 From: Greg Wells Date: Fri, 6 Jun 2025 12:24:09 -0400 Subject: [PATCH] metal vertex descriptors --- .../metal_graphics_pipeline.m | 21 +++++++++++++++++++ 1 file changed, 21 insertions(+) diff --git a/rendering_api/metal/src/core/pipelines/graphics_pipeline/metal_graphics_pipeline.m b/rendering_api/metal/src/core/pipelines/graphics_pipeline/metal_graphics_pipeline.m index fdc3dda..6951cf5 100644 --- a/rendering_api/metal/src/core/pipelines/graphics_pipeline/metal_graphics_pipeline.m +++ b/rendering_api/metal/src/core/pipelines/graphics_pipeline/metal_graphics_pipeline.m @@ -19,6 +19,12 @@ MTLBlendOperation vkGryphnBlendOperation(enum gnBlendOperation_e operation) { } } +MTLVertexFormat mtlGryphnVertexFormat(gnVertexFormat format) { + switch (format) { + case GN_FLOAT2: return MTLVertexFormatFloat2; + } +} + gnReturnCode gnCreateGraphicsPipelineFn(struct gnGraphicsPipeline_t* graphicsPipeline, struct gnOutputDevice_t* device, struct gnGraphicsPipelineInfo_t info) { graphicsPipeline->graphicsPipeline = malloc(sizeof(struct gnPlatformGraphicsPipeline_t)); MTLRenderPipelineDescriptor* descriptor = [[MTLRenderPipelineDescriptor alloc] init]; @@ -60,7 +66,22 @@ gnReturnCode gnCreateGraphicsPipelineFn(struct gnGraphicsPipeline_t* graphicsPip } } + MTLVertexDescriptor* vertexDescriptor = [[MTLVertexDescriptor alloc] init]; + MTLVertexAttributeDescriptorArray* attributes = vertexDescriptor.attributes; + MTLVertexBufferLayoutDescriptorArray* buffers = vertexDescriptor.layouts; + int k = 0; + for (int i = 0; i < info.shaderInputLayout.bufferCount; i++) { + [[buffers objectAtIndexedSubscript:info.shaderInputLayout.bufferAttributes[i].binding] setStride:info.shaderInputLayout.bufferAttributes[i].size]; + for (int j = 0; j < info.shaderInputLayout.bufferAttributes[i].attributeCount; j++) { + attributes[k].bufferIndex = i; + attributes[k].offset = info.shaderInputLayout.bufferAttributes[i].attributes[j].offset; + attributes[k].format = mtlGryphnVertexFormat(info.shaderInputLayout.bufferAttributes[i].attributes[j].format); + k++; + } + } + + [descriptor setVertexDescriptor:vertexDescriptor]; NSError* error = nil; graphicsPipeline->graphicsPipeline->graphicsPipeline = [device->outputDevice->device newRenderPipelineStateWithDescriptor:descriptor error:&error]; if (graphicsPipeline->graphicsPipeline->graphicsPipeline == nil) {