149 lines
3.3 KiB
C
149 lines
3.3 KiB
C
#ifndef GPU_H
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#define GPU_H
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struct sys_window;
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#define GPU_TEXTURE_MAX_WIDTH 16384
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#define GPU_TEXTURE_MAX_HEIGHT 16384
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/* ========================== *
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* Startup
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* ========================== */
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struct gpu_startup_receipt { i32 _; };
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struct gpu_startup_receipt gpu_startup(struct sys_window *window);
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/* ========================== *
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* Texture
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* ========================== */
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enum gpu_texture_format {
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GPU_TEXTURE_FORMAT_NONE,
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GPU_TEXTURE_FORMAT_R8G8B8A8_UNORM,
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GPU_TEXTURE_FORMAT_R8G8B8A8_UNORM_SRGB,
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NUM_GPU_TEXTURE_FORMATS
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};
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enum gpu_texture_flag {
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GPU_TEXTURE_FLAG_NONE = (0),
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GPU_TEXTURE_FLAG_TARGETABLE = (1 << 0)
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};
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struct gpu_texture {
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u64 handle;
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};
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struct gpu_texture gpu_texture_alloc(enum gpu_texture_format format, u32 flags, struct v2i32 size, void *initial_data);
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void gpu_texture_release(struct gpu_texture t);
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void gpu_texture_clear(struct gpu_texture target_texture, u32 clear_color);
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struct v2i32 gpu_texture_get_size(struct gpu_texture texture);
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/* ========================== *
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* Cmd buffer
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* ========================== */
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struct gpu_indices {
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u16 count;
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u16 *indices;
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};
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enum gpu_cmd_kind {
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GPU_CMD_KIND_NONE,
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GPU_CMD_KIND_DRAW_VIEW,
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GPU_CMD_KIND_DRAW_MESH,
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GPU_CMD_KIND_DRAW_TEXTURE,
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GPU_CMD_KIND_DRAW_GRID,
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GPU_CMD_KIND_TEST,
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NUM_GPU_CMD_KINDS
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};
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struct gpu_cmd_params {
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enum gpu_cmd_kind kind;
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union {
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struct {
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struct xform xf;
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} view;
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struct {
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struct v2_array vertices;
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struct gpu_indices indices;
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u32 color;
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} mesh;
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struct {
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struct xform xf;
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struct sprite_tag sprite;
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struct gpu_texture texture;
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struct clip_rect clip;
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u32 tint;
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f32 emittance;
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} texture;
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struct {
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struct xform xf;
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f32 line_thickness;
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f32 line_spacing;
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struct v2 offset;
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u32 bg0_color;
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u32 bg1_color;
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u32 line_color;
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u32 x_color;
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u32 y_color;
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} grid;
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struct {
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struct xform xf;
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} test;
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};
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};
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struct gpu_cmd_store {
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u64 handle;
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};
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struct gpu_cmd_store gpu_cmd_store_alloc(void);
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void gpu_cmd_store_release(struct gpu_cmd_store gpu_cmd_store);
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void gpu_push_cmd(struct gpu_cmd_store gpu_cmd_store, struct gpu_cmd_params params);
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void gpu_submit_cmds(struct gpu_cmd_store gpu_cmd_store);
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/* ========================== *
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* Pass
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* ========================== */
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struct gpu_pass_cmds_array {
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u64 count;
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struct gpu_cmd_store **cmds;
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};
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struct gpu_pass_params {
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struct gpu_pass_cmds_array cmds_array;
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struct gpu_texture draw_target;
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struct rect draw_target_viewport;
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};
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struct gpu_pass_state {
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u64 handle;
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};
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struct gpu_pass_state gpu_pass_state_alloc(void);
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void gpu_pass_state_release(struct gpu_pass_state gpu_pass_state);
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void gpu_run_pass(struct gpu_pass_state gpu_pass_state, struct gpu_pass_params params);
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/* ========================== *
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* Backbuffer
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* ========================== */
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/* Returns a texture representing the internal backbuffer. Lifetime is managed by gpu layer. */
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struct gpu_texture gpu_recreate_backbuffer(struct v2i32 size);
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/* Presents the backbuffer to the screen */
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void gpu_swap_backbuffer(i32 vsync);
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#endif
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