Initial commit

1 files changed, 77 insertions, 0 deletions

diff --git a/micro/renderer.h b/micro/renderer.h
new file mode 100644
index 0000000..7ddddf5
--- /dev/null
+++ b/micro/renderer.h
@@ -0,0 +1,77 @@
+#ifndef __MICRO_RENDERER_H__
+#define __MICRO_RENDERER_H__
+
+#include "common.h"
+#include "mat4.h"
+#include "tex.h"
+
+#define MAX_BOUND_TEX 16
+
+enum blend_mode {
+        BLEND_ALPHA,
+        BLEND_ADD,
+};
+
+struct color {
+        float r;
+        float g;
+        float b;
+        float a;
+};
+
+struct vec3 {
+        float x;
+        float y;
+        float z;
+};
+
+struct vec2 {
+        float x;
+        float y;
+};
+
+struct vertex {
+        struct vec3 xyz;
+        struct vec2 uv;
+        struct color col;
+};
+
+struct draw_call {
+        struct texture textures[MAX_BOUND_TEX];
+        int next_tex_bind;
+        int cur_tex_bind;
+        int mesh_start;
+        int vert_count;
+        enum blend_mode blend_mode;
+
+        struct vec3 *xyz;
+        struct vec2 *uv;
+        struct color *col;
+        int *tex;
+
+        u16 *indices;
+};
+
+struct renderer {
+        struct ctx *ctx;
+        struct texture white_1x1;
+        struct draw_call dc;
+        struct color cur_col;
+        u32 shader_program;
+
+        mat4 projection;
+};
+
+void init_renderer(struct renderer *r, struct ctx *ctx);
+void deinit_renderer(struct renderer *r);
+void flush_pending(struct renderer *r);
+
+void draw_clear(struct color col);
+void draw_rect(struct renderer *r, float x, float y, float w, float h);
+void draw_texture(struct renderer *r, struct texture tex, float x, float y);
+void set_blend_mode(struct renderer *r, enum blend_mode mode);
+// NULL to unbind
+void bind_render_texture(struct renderer *r, struct render_texture *rtex);
+void end_draw(struct renderer *r);
+
+#endif // __MICRO_RENDERER_H__