157 lines
3.9 KiB
C
157 lines
3.9 KiB
C
struct sys_window;
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struct snc_counter;
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typedef struct G_Indices G_Indices;
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struct G_Indices {
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u32 count;
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u32 *indices;
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};
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/* ========================== *
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* Startup
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* ========================== */
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void gp_startup(void);
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/* ========================== *
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* Resource
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* ========================== */
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typedef struct G_Resource G_Resource;
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/* NOTE: Internally, the layer will make sure to not release any resources
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* until after any in-flight GPU runs finish using them. However, it is up to
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* the caller to make sure the released resources aren't then referenced in
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* any runs
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*/
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void gp_resource_release(G_Resource *resource);
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/* ========================== *
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* Texture
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* ========================== */
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typedef enum G_TextureFormat {
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GP_TEXTURE_FORMAT_NONE,
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GP_TEXTURE_FORMAT_R8_UNORM,
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GP_TEXTURE_FORMAT_R8G8B8A8_UNORM,
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GP_TEXTURE_FORMAT_R8G8B8A8_UNORM_SRGB,
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GP_TEXTURE_FORMAT_R16G16B16A16_FLOAT,
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NUM_GP_TEXTURE_FORMATS
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} G_TextureFormat;
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typedef enum G_TextureFlag {
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GP_TEXTURE_FLAG_NONE = (0),
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GP_TEXTURE_FLAG_TARGETABLE = (1 << 0)
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} G_TextureFlag;
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G_Resource *gp_texture_alloc(G_TextureFormat format, u32 flags, V2i32 size, void *initial_data);
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V2i32 gp_texture_get_size(G_Resource *texture);
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/* ========================== *
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* Render
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* ========================== */
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typedef enum G_RenderCmdKind {
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GP_RENDER_CMD_KIND_NONE,
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GP_RENDER_CMD_KIND_DRAW_MATERIAL,
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GP_RENDER_CMD_KIND_DRAW_UI_RECT,
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GP_RENDER_CMD_KIND_DRAW_UI_SHAPE,
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GP_RENDER_CMD_KIND_PUSH_GRID,
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NUM_GP_RENDER_CMD_KINDS
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} G_RenderCmdKind;
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typedef struct G_RenderCmdDesc G_RenderCmdDesc;
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struct G_RenderCmdDesc {
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G_RenderCmdKind kind;
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union {
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struct {
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Xform xf;
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G_Resource *texture;
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ClipRect clip;
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u32 tint;
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b32 is_light;
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V3 light_emittance;
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u32 grid_cmd_id;
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} material;
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struct {
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Xform xf;
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G_Resource *texture;
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ClipRect clip;
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u32 tint;
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} ui_rect;
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struct {
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V2Array vertices;
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G_Indices indices;
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u32 color;
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} ui_shape;
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struct {
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f32 line_thickness;
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f32 line_spacing;
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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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};
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};
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typedef struct G_RenderParams G_RenderParams;
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struct G_RenderParams {
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V2i32 ui_size;
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V2i32 render_size;
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Xform world_to_render_xf;
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Xform render_to_ui_xf;
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b32 effects_disabled;
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};
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typedef struct G_RenderSig G_RenderSig;
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G_RenderSig *gp_render_sig_alloc(void);
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/* Returns a cmd id internal to the sig */
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u32 gp_push_render_cmd(G_RenderSig *render_sig, G_RenderCmdDesc *desc);
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G_Resource *gp_run_render(G_RenderSig *gp_render_sig, G_RenderParams render_params);
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/* ========================== *
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* Memory info
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* ========================== */
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typedef struct G_MemoryInfo G_MemoryInfo;
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struct G_MemoryInfo {
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u64 local_used;
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u64 local_budget;
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u64 non_local_used;
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u64 non_local_budget;
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};
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G_MemoryInfo gp_query_memory_info(void);
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/* ========================== *
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* Swapchain
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* ========================== */
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typedef struct G_Swapchain G_Swapchain;
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G_Swapchain *gp_swapchain_alloc(struct sys_window *window, V2i32 resolution);
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void gp_swapchain_release(G_Swapchain *gp_swapchain);
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/* Waits until a new backbuffer is ready to be written to.
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* This should be called before rendering for minimum latency. */
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void gp_swapchain_wait(G_Swapchain *gp_swapchain);
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/* ========================== *
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* Present
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* ========================== */
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/* 1. Clears the backbuffer and ensures it's at size `backbuffer_resolution`
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* 2. Blits `texture` to the backbuffer using `texture_xf`
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* 3. Presents the backbuffer */
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void gp_present(G_Swapchain *gp_swapchain, V2i32 backbuffer_resolution, G_Resource *texture, Xform texture_xf, i32 vsync);
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