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Add vertex buffer creation and upload

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This commit is contained in:
Joshua Goins 2022-10-04 10:25:48 -04:00
parent 210ca8233a
commit 075431545a
1 changed files with 49 additions and 0 deletions
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49
src/pc/gfx/gfx_vulkan.cpp
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@ -40,6 +40,9 @@ static VkCommandBuffer current_cmd = VK_NULL_HANDLE;
static VkPipeline pipeline = VK_NULL_HANDLE;
static VkPipelineLayout pipeline_layout = VK_NULL_HANDLE;
static VkBuffer vertex_buffer = VK_NULL_HANDLE;
static VkDeviceMemory vertex_memory = VK_NULL_HANDLE;
VKAPI_ATTR VkBool32 VKAPI_CALL
gfx_vulkan_debug_callback(VkDebugUtilsMessageSeverityFlagBitsEXT messageSeverity,
VkDebugUtilsMessageTypeFlagsEXT messageType,
@ -632,6 +635,35 @@ static void gfx_vulkan_create_framebuffers() {
}
}
static void gfx_vulkan_create_buffers() {
vkDeviceWaitIdle(device);
// create buffer
VkBufferCreateInfo create_info = {};
create_info.sType = VK_STRUCTURE_TYPE_BUFFER_CREATE_INFO;
create_info.size = 60000;
create_info.usage = VK_BUFFER_USAGE_VERTEX_BUFFER_BIT | VK_BUFFER_USAGE_TRANSFER_DST_BIT;
create_info.sharingMode = VK_SHARING_MODE_EXCLUSIVE;
vkCreateBuffer(device, &create_info, nullptr, &vertex_buffer);
// allocate memory
VkMemoryRequirements memory_requirements;
vkGetBufferMemoryRequirements(device, vertex_buffer, &memory_requirements);
VkMemoryAllocateInfo allocate_info = {};
allocate_info.sType = VK_STRUCTURE_TYPE_MEMORY_ALLOCATE_INFO;
allocate_info.allocationSize = memory_requirements.size;
allocate_info.memoryTypeIndex =
gfx_vulkan_find_memory_type(memory_requirements.memoryTypeBits,
VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT |
VK_MEMORY_PROPERTY_HOST_COHERENT_BIT);
vkAllocateMemory(device, &allocate_info, nullptr, &vertex_memory);
vkBindBufferMemory(device, vertex_buffer, vertex_memory, 0);
}
static void gfx_vulkan_renderer_init(void) {
gfx_vulkan_create_instance();
gfx_vulkan_create_device();
@ -640,6 +672,7 @@ static void gfx_vulkan_renderer_init(void) {
gfx_vulkan_create_sync();
gfx_vulkan_create_depth();
gfx_vulkan_create_framebuffers();
gfx_vulkan_create_buffers();
}
static void gfx_vulkan_renderer_on_resize(void) {
@ -731,6 +764,22 @@ static void gfx_vulkan_renderer_draw_triangles(float buf_vbo[], size_t buf_vbo_l
// FIXME: uh no
vkCmdBindPipeline(current_cmd, VK_PIPELINE_BIND_POINT_GRAPHICS, pipeline);
void* mapped_data = nullptr;
vkMapMemory(device, vertex_memory, 0, buf_vbo_len, 0, &mapped_data);
memcpy(mapped_data, buf_vbo, buf_vbo_len);
VkMappedMemoryRange range = {};
range.sType = VK_STRUCTURE_TYPE_MAPPED_MEMORY_RANGE;
range.memory = vertex_memory;
range.size = buf_vbo_len;
vkFlushMappedMemoryRanges(device, 1, &range);
vkUnmapMemory(device, vertex_memory);
VkDeviceSize offsets[] = {0};
vkCmdBindVertexBuffers(current_cmd, 0, 1, &vertex_buffer, offsets);
vkCmdDraw(current_cmd, buf_vbo_num_tris, 1, 0, 0);
}