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vulkan create vertex layout

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This commit is contained in:
Greg Wells
2025-06-06 11:41:09 -04:00
parent 35b37c3296
commit ba20d5a958
2 changed files with 35 additions and 3 deletions
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36
rendering_api/vulkan/src/pipelines/graphics_pipeline/vulkan_graphics_pipeline.c
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@@ -54,6 +54,12 @@ VkBlendOp vkGryphnBlendOperation(enum gnBlendOperation_e operation) {
}
}
VkFormat vkGryphnVertexFormat(gnVertexFormat format) {
switch (format) {
case GN_FLOAT2: return VK_FORMAT_R32G32_SFLOAT;
}
}
gnReturnCode gnCreateGraphicsPipelineFn(struct gnGraphicsPipeline_t* graphicsPipeline, struct gnOutputDevice_t* device, struct gnGraphicsPipelineInfo_t info) {
graphicsPipeline->graphicsPipeline = malloc(sizeof(gnPlatformGraphicsPipeline));
@@ -71,10 +77,32 @@ gnReturnCode gnCreateGraphicsPipelineFn(struct gnGraphicsPipeline_t* graphicsPip
.pDynamicStates = dynamicStates
};
int vertexAttributeCount = 0;
VkVertexInputAttributeDescription* attributeDescriptions = NULL;
VkVertexInputBindingDescription* bindingDescriptions = malloc(sizeof(VkVertexInputBindingDescription) * info.shaderInputLayout.bufferCount);
for (int i = 0; i < info.shaderInputLayout.bufferCount; i++) {
bindingDescriptions[i].binding = info.shaderInputLayout.bufferAttributes[i].binding;
bindingDescriptions[i].stride = info.shaderInputLayout.bufferAttributes[i].size;
bindingDescriptions[i].inputRate = VK_VERTEX_INPUT_RATE_VERTEX;
vertexAttributeCount += info.shaderInputLayout.bufferAttributes[i].attributeCount;
}
attributeDescriptions = malloc(sizeof(VkVertexInputBindingDescription) * vertexAttributeCount);
for (int i = 0, j = 0; j < info.shaderInputLayout.bufferCount; j++) {
for (int k = 0; k < info.shaderInputLayout.bufferAttributes[j].attributeCount; k++) {
attributeDescriptions[i].binding = j;
attributeDescriptions[i].location = info.shaderInputLayout.bufferAttributes[j].attributes[k].location;
attributeDescriptions[i].offset = info.shaderInputLayout.bufferAttributes[j].attributes[k].offset;
attributeDescriptions[i].format = vkGryphnVertexFormat(info.shaderInputLayout.bufferAttributes[j].attributes[k].format);
i++;
}
}
graphicsPipeline->graphicsPipeline->vertexInfo = (VkPipelineVertexInputStateCreateInfo){
.sType = VK_STRUCTURE_TYPE_PIPELINE_VERTEX_INPUT_STATE_CREATE_INFO,
.vertexBindingDescriptionCount = 0,
.vertexAttributeDescriptionCount = 0
.vertexBindingDescriptionCount = info.shaderInputLayout.bufferCount,
.pVertexBindingDescriptions = bindingDescriptions,
.vertexAttributeDescriptionCount = vertexAttributeCount,
.pVertexAttributeDescriptions = attributeDescriptions
};
graphicsPipeline->graphicsPipeline->inputAssembly = (VkPipelineInputAssemblyStateCreateInfo){
@@ -192,7 +220,7 @@ gnReturnCode gnCreateGraphicsPipelineFn(struct gnGraphicsPipeline_t* graphicsPip
.renderPass = info.renderPassDescriptor->renderPassDescriptor->renderPass,
.subpass = info.subpassIndex,
.basePipelineHandle = VK_NULL_HANDLE,
.basePipelineIndex = -1
.basePipelineIndex = -1,
};
if (vkCreateGraphicsPipelines(device->outputDevice->device, VK_NULL_HANDLE, 1, &pipelineInfo, NULL, &graphicsPipeline->graphicsPipeline->graphicsPipeline) != VK_SUCCESS) {
@@ -200,6 +228,8 @@ gnReturnCode gnCreateGraphicsPipelineFn(struct gnGraphicsPipeline_t* graphicsPip
}
free(dynamicStates);
free(bindingDescriptions);
free(attributeDescriptions);
return GN_SUCCESS;
}