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/**
* @file ral.h
* @author your name (you@domain.com)
* @brief Render Abstraction Layer
* @details API that a graphics backend *must* implement
* @version 0.1
* @date 2024-03-31
*
* @copyright Copyright (c) 2024
*
*/
#pragma once
#include "cleanroom/types.h"
#include "defines.h"
// TODO: Replace with handle defines
typedef int buffer_handle;
typedef int texture_handle;
typedef int sampler_handle;
typedef int model_handle;
// Forward declare structs
typedef struct gpu_swapchain gpu_swapchain;
typedef struct gpu_device gpu_device;
typedef struct gpu_pipeline gpu_pipeline;
typedef struct gpu_renderpass gpu_renderpass;
typedef struct gpu_cmd_encoder gpu_cmd_encoder; // Recording
typedef struct gpu_cmd_buffer gpu_cmd_buffer; // Ready for submission
// lifecycle functions
gpu_device* gpu_device_create();
void gpu_device_destroy();
gpu_renderpass* gpu_renderpass_create();
void gpu_renderpass_destroy(gpu_renderpass* pass);
gpu_pipeline* gpu_pipeline_create(pipeline_kind kind);
void gpu_pipeline_destroy(gpu_pipeline* pipeline);
void gpu_cmd_encoder_begin();
void gpu_cmd_encoder_begin_render();
void gpu_cmd_encoder_begin_compute();
/* Actual commands that we can encode */
void encode_buffer_copy(gpu_cmd_encoder* encoder, buffer_handle src, u64 src_offset,
buffer_handle dst, u64 dst_offset, u64 copy_size);
void encode_clear_buffer(gpu_cmd_encoder* encoder, buffer_handle buf);
void encode_set_pipeline(gpu_cmd_encoder* encoder, gpu_pipeline* pipeline);
// render pass
void encode_set_vertex_buffer(gpu_cmd_encoder* encoder, buffer_handle buf);
void encode_set_index_buffer(gpu_cmd_encoder* encoder, buffer_handle buf);
void encode_set_bind_group();
void encode_draw(gpu_cmd_encoder* encoder);
void encode_draw_indexed(gpu_cmd_encoder* encoder, u64 index_count);
// FUTURE: compute passes
/** @brief Finish recording and return a command buffer that can be submitted to a queue */
gpu_cmd_buffer gpu_cmd_encoder_finish(gpu_cmd_encoder* encoder);
void gpu_queue_submit(gpu_cmd_buffer* buffer);
// Buffers
void gpu_buffer_create(u64 size);
void gpu_buffer_destroy(buffer_handle buffer);
void gpu_buffer_upload();
void gpu_buffer_bind(buffer_handle buffer);
// Textures
void gpu_texture_create();
void gpu_texture_destroy();
void gpu_texture_upload();
// Samplers
void gpu_sampler_create();
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