Function create_resources

samples/render_graph/rg-deferred/deferred.cpp:96–201

}

void create_resources()
{
    // upload
    CGPUBufferDescriptor upload_buffer_desc = {};
    upload_buffer_desc.name = u8"UploadBuffer";
    upload_buffer_desc.flags = CGPU_BCF_PERSISTENT_MAP_BIT;
    upload_buffer_desc.descriptors = CGPU_RESOURCE_TYPE_NONE;
    upload_buffer_desc.memory_usage = CGPU_MEM_USAGE_CPU_ONLY;
    upload_buffer_desc.size = sizeof(CubeGeometry) + sizeof(CubeGeometry::g_Indices) + sizeof(CubeGeometry::InstanceData);
    auto upload_buffer = cgpu_create_buffer(device, &upload_buffer_desc);
    CGPUBufferDescriptor vb_desc = {};
    vb_desc.name = u8"VertexBuffer";
    vb_desc.flags = CGPU_BCF_NONE;
    vb_desc.descriptors = CGPU_RESOURCE_TYPE_VERTEX_BUFFER;
    vb_desc.memory_usage = CGPU_MEM_USAGE_GPU_ONLY;
    vb_desc.size = sizeof(CubeGeometry);
    vertex_buffer = cgpu_create_buffer(device, &vb_desc);
    CGPUBufferDescriptor ib_desc = {};
    ib_desc.name = u8"IndexBuffer";
    ib_desc.flags = CGPU_BCF_NONE;
    ib_desc.descriptors = CGPU_RESOURCE_TYPE_INDEX_BUFFER;
    ib_desc.memory_usage = CGPU_MEM_USAGE_GPU_ONLY;
    ib_desc.size = sizeof(CubeGeometry::g_Indices);
    index_buffer = cgpu_create_buffer(device, &ib_desc);
    CGPUBufferDescriptor inb_desc = {};
    inb_desc.name = u8"InstanceBuffer";
    inb_desc.flags = CGPU_BCF_NONE;
    inb_desc.descriptors = CGPU_RESOURCE_TYPE_VERTEX_BUFFER;
    inb_desc.memory_usage = CGPU_MEM_USAGE_GPU_ONLY;
    inb_desc.size = sizeof(CubeGeometry::InstanceData);
    instance_buffer = cgpu_create_buffer(device, &inb_desc);
    auto pool_desc = CGPUCommandPoolDescriptor();
    auto cmd_pool = cgpu_create_command_pool(gfx_queue, &pool_desc);
    auto cmd_desc = CGPUCommandBufferDescriptor();
    auto cpy_cmd = cgpu_create_command_buffer(cmd_pool, &cmd_desc);
    {
        auto geom = CubeGeometry();
        memcpy(upload_buffer->info->cpu_mapped_address, &geom, upload_buffer_desc.size);
    }
    cgpu_cmd_begin(cpy_cmd);
    CGPUBufferToBufferTransfer vb_cpy = {};
    vb_cpy.dst = vertex_buffer;
    vb_cpy.dst_offset = 0;
    vb_cpy.src = upload_buffer;
    vb_cpy.src_offset = 0;
    vb_cpy.size = sizeof(CubeGeometry);
    cgpu_cmd_transfer_buffer_to_buffer(cpy_cmd, &vb_cpy);
    {
        memcpy((char8_t*)upload_buffer->info->cpu_mapped_address + sizeof(CubeGeometry),
        CubeGeometry::g_Indices, sizeof(CubeGeometry::g_Indices));
    }
    CGPUBufferToBufferTransfer ib_cpy = {};
    ib_cpy.dst = index_buffer;
    ib_cpy.dst_offset = 0;
    ib_cpy.src = upload_buffer;
    ib_cpy.src_offset = sizeof(CubeGeometry);
    ib_cpy.size = sizeof(CubeGeometry::g_Indices);
    cgpu_cmd_transfer_buffer_to_buffer(cpy_cmd, &ib_cpy);