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metal depth stencil state or something

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This commit is contained in:
Greg Wells
2025-07-01 12:42:03 -04:00
parent dd84b3bef3
commit 4c7fe77db3
4 changed files with 29 additions and 9 deletions
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1
projects/apis/metal/src/pipelines/graphics_pipeline/metal_graphics_pipeline.h
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@@ -5,6 +5,7 @@
typedef struct gnPlatformGraphicsPipeline_t {
id<MTLRenderPipelineState> graphicsPipeline;
id<MTLDepthStencilState> depthState;
metalBindingMaps vertexShaderMaps, fragmentShaderMaps;
} gnPlatformGraphicsPipeline;

24
projects/apis/metal/src/pipelines/graphics_pipeline/metal_graphics_pipeline.m
View File

@@ -28,6 +28,19 @@ MTLVertexFormat mtlGryphnVertexFormat(gnVertexFormat format) {
}
}
MTLCompareFunction mtlGrypnCompareOperation(gnCompareOperation operation) {
switch(operation) {
case GN_COMPARE_NEVER: return MTLCompareFunctionNever;
case GN_COMPARE_LESS: return MTLCompareFunctionLess;
case GN_COMPARE_EQUAL: return MTLCompareFunctionEqual;
case GN_COMPARE_LESS_OR_EQUAL: return MTLCompareFunctionLessEqual;
case GN_COMPARE_GREATER: return MTLCompareFunctionGreater;
case GN_COMPARE_NOT_EQUAL: return MTLCompareFunctionNotEqual;
case GN_COMPARE_GREATER_OR_EQUAL: return MTLCompareFunctionGreaterEqual;
case GN_COMPARE_ALWAYS: return MTLCompareFunctionAlways;
}
}
gnReturnCode createMetalGraphicsPipeline(gnGraphicsPipeline graphicsPipeline, gnOutputDevice device, gnGraphicsPipelineInfo info) {
graphicsPipeline->graphicsPipeline = malloc(sizeof(struct gnPlatformGraphicsPipeline_t));
MTLRenderPipelineDescriptor* descriptor = [[MTLRenderPipelineDescriptor alloc] init];
@@ -75,10 +88,6 @@ gnReturnCode createMetalGraphicsPipeline(gnGraphicsPipeline graphicsPipeline, gn
MTLVertexAttributeDescriptorArray* attributes = vertexDescriptor.attributes;
MTLVertexBufferLayoutDescriptorArray* buffers = vertexDescriptor.layouts;
// layout(location = 0) in vec3 inPosition;
// layout(location = 1) in vec2 inUV;
// layout(location = 2) in vec3 inColor;
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];
@@ -90,6 +99,13 @@ gnReturnCode createMetalGraphicsPipeline(gnGraphicsPipeline graphicsPipeline, gn
}
}
MTLDepthStencilDescriptor* depthStencilDesc = [[MTLDepthStencilDescriptor alloc] init];
depthStencilDesc.depthWriteEnabled = info.depthStencil.depthWriteEnable,
depthStencilDesc.depthCompareFunction = info.depthStencil.depthWriteEnable,
depthStencilDesc.depthCompareFunction = mtlGrypnCompareOperation(info.depthStencil.operation),
graphicsPipeline->graphicsPipeline->depthState = [device->outputDevice->device newDepthStencilStateWithDescriptor:depthStencilDesc];
[descriptor setVertexDescriptor:vertexDescriptor];
NSError* error = nil;
graphicsPipeline->graphicsPipeline->graphicsPipeline = [device->outputDevice->device newRenderPipelineStateWithDescriptor:descriptor error:&error];