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vulkan: add vulkan compute source

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Add a source that runs a compute shader and exports the GPU buffer
as a DmaBuf to the clients.
This commit is contained in:
Wim Taymans 2019-08-19 16:32:22 +02:00
parent edbd9eb077
commit 9799b0e679
12 changed files with 1759 additions and 0 deletions
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66
spa/plugins/vulkan/vulkan-utils.h Normal file
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#include <vulkan/vulkan.h>
#include <spa/buffer/buffer.h>
#define MAX_BUFFERS 16
#define WORKGROUP_SIZE 32
struct pixel {
float r, g, b, a;
};
struct push_constants {
float time;
int frame;
int width;
int height;
};
struct vulkan_buffer {
struct spa_buffer *buf;
VkBuffer buffer;
VkDeviceMemory memory;
};
struct vulkan_state {
struct push_constants constants;
VkInstance instance;
VkPhysicalDevice physicalDevice;
VkDevice device;
VkPipeline pipeline;
VkPipelineLayout pipelineLayout;
VkShaderModule computeShaderModule;
VkCommandPool commandPool;
VkCommandBuffer commandBuffer;
VkQueue queue;
uint32_t queueFamilyIndex;
VkFence fence;
unsigned int prepared:1;
unsigned int busy:1;
VkDescriptorPool descriptorPool;
VkDescriptorSet descriptorSet;
VkDescriptorSetLayout descriptorSetLayout;
struct vulkan_buffer buffers[MAX_BUFFERS];
uint32_t n_buffers;
uint32_t bufferSize;
uint32_t buffer_id;
};
int spa_vulkan_prepare(struct vulkan_state *s);
int spa_vulkan_use_buffers(struct vulkan_state *s, uint32_t flags,
uint32_t n_buffers, struct spa_buffer **buffers);
int spa_vulkan_unprepare(struct vulkan_state *s);
int spa_vulkan_start(struct vulkan_state *s);
int spa_vulkan_stop(struct vulkan_state *s);
int spa_vulkan_ready(struct vulkan_state *s);
int spa_vulkan_process(struct vulkan_state *s, uint32_t buffer_id);
int spa_vulkan_cleanup(struct vulkan_state *s);