void initDescriptorSet(GR_DEVICE device, GR_QUEUE commandQueue, GR_DESCRIPTOR_SET& descriptorSet, GR_MEMORY_REF& descriptorMemRef, GR_MEMORY_REF& vertexDataMemRef) {
// Create descriptor set for vertex shader inputs
GR_DESCRIPTOR_SET_CREATE_INFO descriptorCreateInfo = {};
descriptorCreateInfo.slots = 2;
grCreateDescriptorSet(device, &descriptorCreateInfo, &descriptorSet);
descriptorMemRef = allocateObjectMemory(device, descriptorSet);
// Store vertex data in GPU memory
GR_GPU_MEMORY vertexDataMemory = allocateMappableBuffer(device, sizeof(vertices));
void* bufferPointer;
grMapMemory(vertexDataMemory, 0, &bufferPointer);
memcpy(bufferPointer, vertices, sizeof(vertices));
grUnmapMemory(vertexDataMemory);
vertexDataMemRef = {};
vertexDataMemRef.mem = vertexDataMemory;
// Create and submit command buffer that transitions vertex data memory to being shader accessible
GR_CMD_BUFFER initDataCmdBuffer;
grCreateCommandBuffer(device, &bufferCreateInfo, &initDataCmdBuffer);
grBeginCommandBuffer(initDataCmdBuffer, 0);
GR_MEMORY_STATE_TRANSITION dataTransition = {};
dataTransition.mem = vertexDataMemory;
dataTransition.oldState = GR_MEMORY_STATE_DATA_TRANSFER;
dataTransition.newState = GR_MEMORY_STATE_GRAPHICS_SHADER_READ_ONLY;
dataTransition.offset = 0;
dataTransition.regionSize = sizeof(vertices);
grCmdPrepareMemoryRegions(initDataCmdBuffer, 1, &dataTransition);
grEndCommandBuffer(initDataCmdBuffer);
grQueueSubmit(commandQueue, 1, &initDataCmdBuffer, 1, &vertexDataMemRef, 0);
// Attach views to the vertex data to the descriptor set
grBeginDescriptorSetUpdate(descriptorSet);
GR_MEMORY_VIEW_ATTACH_INFO memoryViewAttachInfo = {};
memoryViewAttachInfo.mem = vertexDataMemory;
memoryViewAttachInfo.offset = 0;
memoryViewAttachInfo.stride = sizeof(float) * 4;
memoryViewAttachInfo.range = sizeof(float) * 12;
memoryViewAttachInfo.format.channelFormat = GR_CH_FMT_R32G32B32A32;
memoryViewAttachInfo.format.numericFormat = GR_NUM_FMT_FLOAT;
memoryViewAttachInfo.state = GR_MEMORY_STATE_GRAPHICS_SHADER_READ_ONLY;
grAttachMemoryViewDescriptors(descriptorSet, 0, 1, &memoryViewAttachInfo);
memoryViewAttachInfo.offset = sizeof(float) * 12;
memoryViewAttachInfo.range = sizeof(float) * 12;
grAttachMemoryViewDescriptors(descriptorSet, 1, 1, &memoryViewAttachInfo);
grEndDescriptorSetUpdate(descriptorSet);
}
void createGraphicsPipeline(GR_DEVICE device, GR_PIPELINE& pipeline, GR_MEMORY_REF& pipelineMemRef) {
// Load shaders
GR_SHADER vertexShader = createShader(device, "shaders/vs.bin");
GR_SHADER fragShader = createShader(device, "shaders/ps.bin");
// Specify descriptor slots
GR_DESCRIPTOR_SLOT_INFO vsDescriptorSlots[2];
vsDescriptorSlots[0].slotObjectType = GR_SLOT_SHADER_RESOURCE;
vsDescriptorSlots[0].shaderEntityIndex = 0;
vsDescriptorSlots[1].slotObjectType = GR_SLOT_SHADER_RESOURCE;
vsDescriptorSlots[1].shaderEntityIndex = 1;
GR_DESCRIPTOR_SLOT_INFO psDescriptorSlots[2];
psDescriptorSlots[0].slotObjectType = GR_SLOT_UNUSED;
psDescriptorSlots[1].slotObjectType = GR_SLOT_UNUSED;
// Create graphics pipeline
GR_GRAPHICS_PIPELINE_CREATE_INFO pipelineCreateInfo = {};
pipelineCreateInfo.vs.shader = vertexShader;
pipelineCreateInfo.vs.dynamicMemoryViewMapping.slotObjectType = GR_SLOT_UNUSED;
pipelineCreateInfo.vs.descriptorSetMapping[0].descriptorCount = 2;
pipelineCreateInfo.vs.descriptorSetMapping[0].pDescriptorInfo = vsDescriptorSlots;
pipelineCreateInfo.ps.shader = fragShader;
pipelineCreateInfo.ps.dynamicMemoryViewMapping.slotObjectType = GR_SLOT_UNUSED;
pipelineCreateInfo.ps.descriptorSetMapping[0].descriptorCount = 2;
pipelineCreateInfo.ps.descriptorSetMapping[0].pDescriptorInfo = psDescriptorSlots;
pipelineCreateInfo.iaState.topology = GR_TOPOLOGY_TRIANGLE_LIST;
pipelineCreateInfo.iaState.disableVertexReuse = GR_FALSE;
pipelineCreateInfo.rsState.depthClipEnable = GR_FALSE;
pipelineCreateInfo.cbState.logicOp = GR_LOGIC_OP_COPY;
pipelineCreateInfo.cbState.target[0].blendEnable = GR_TRUE;
pipelineCreateInfo.cbState.target[0].channelWriteMask = 0xF; // RGBA bits
pipelineCreateInfo.cbState.target[0].format.channelFormat = GR_CH_FMT_R8G8B8A8;
pipelineCreateInfo.cbState.target[0].format.numericFormat = GR_NUM_FMT_UNORM;
pipelineCreateInfo.dbState.format.channelFormat = GR_CH_FMT_R4G4B4A4;
pipelineCreateInfo.dbState.format.numericFormat = GR_NUM_FMT_UNDEFINED;
grCreateGraphicsPipeline(device, &pipelineCreateInfo, &pipeline);
pipelineMemRef = allocateObjectMemory(device, pipeline);
}
void allocateAll() {
allocateObjectMemory();
allocateMethodLookupCache();
allocateFileStreamTable();
}
