87 lines
2.4 KiB
C
87 lines
2.4 KiB
C
#ifndef RENDERER_H
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#define RENDERER_H
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struct sys_window;
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struct texture;
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#define RENDERER_TEXTURE_MAX_WIDTH 16384
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#define RENDERER_TEXTURE_MAX_HEIGHT 16384
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typedef u32 vidx;
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struct renderer_canvas;
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struct renderer_handle {
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u64 v[1];
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};
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/* ========================== *
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* Shaders
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* ========================== */
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enum shader_kind {
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SHADER_NONE,
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SHADER_TEXTURE,
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NUM_SHADERS
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};
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struct texture_shader_parameters {
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struct renderer_handle texture;
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};
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struct texture_shader_vertex {
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struct v2 pos;
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struct v2 uv;
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u32 color;
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} PACKED;
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/* ========================== *
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* Startup
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* ========================== */
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struct renderer_startup_receipt { i32 _; };
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struct renderer_startup_receipt renderer_startup(struct sys_window *window);
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/* ========================== *
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* Canvas
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* ========================== */
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struct renderer_canvas *renderer_canvas_alloc(void);
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void renderer_canvas_release(struct renderer_canvas *canvas);
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/* Set the canvas view xform to be used when presenting the canvas.
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* NOTE: `view` should be in row-major order.
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*/
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void renderer_canvas_set_view(struct renderer_canvas *canvas, struct xform view);
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/* Pushes array of vertices based on `vertices_count` & `indices_count`.
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* Sets `vertices_out` and `indices_out` to start of the pushed arrays, to be filled out by the caller.
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* Returns the index of the first vertex. Each inserted index should be incremented by this.
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*
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* NOTE: This should be preceded by an `ensure_cmd` call to ensure that the correct vertex types
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* are being pushed.
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*/
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u32 renderer_canvas_push_vertices(struct renderer_canvas *canvas, u8 **vertices_out, vidx **indices_out, u32 vertices_count, u32 indices_count);
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/* Checks the currently active draw command. Ensures a new command is created
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* if it doesn't match the expected type (otherwise the command can be re-used
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* for batching). */
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void renderer_canvas_ensure_texture_cmd(struct renderer_canvas *canvas, struct texture_shader_parameters params);
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void renderer_canvas_send_to_gpu(struct renderer_canvas *canvas);
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void renderer_canvas_present(struct renderer_canvas **canvases, u32 canvases_count, struct v2 screen_size, struct rect viewport, i32 vsync);
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/* ========================== *
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* Texture
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* ========================== */
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struct renderer_handle renderer_texture_alloc(struct image_rgba data);
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void renderer_texture_release(struct renderer_handle handle);
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#endif
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