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annotate src/mglimpl.h @ 23:4ad71b558ab2

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author John Tsiombikas <nuclear@member.fsf.org>
date Sat, 21 Sep 2013 19:09:03 +0300
parents be61704c4cc8
children 5ff8ce78059a
rev   line source
nuclear@0 1 #ifndef MGL_IMPL_H_
nuclear@0 2 #define MGL_IMPL_H_
nuclear@0 3
nuclear@14 4 #include "vmath.h"
nuclear@14 5
nuclear@0 6 #define MATRIX_STACK_SIZE 8
nuclear@0 7 #define MAX_LIGHTS 4
nuclear@0 8
nuclear@9 9 #define ZTILE_SIZE 16384
nuclear@9 10 #define ZTILE_SHIFT 14
nuclear@9 11 #define ZTILE_MASK 0x3fff
nuclear@9 12
nuclear@9 13 #define ZTILE(x) (((x) & ~ZTILE_MASK) >> ZTILE_SHIFT)
nuclear@9 14 #define ZTILE_OFFS(x) ((x) & ZTILE_MASK)
nuclear@9 15
nuclear@0 16 #define ROUND(x) ((x) >= 0.0 ? (x) + 0.5 : (x) - 0.5)
nuclear@0 17
nuclear@0 18
nuclear@0 19 typedef float mat4_t[16];
nuclear@0 20
nuclear@0 21 struct vertex {
nuclear@0 22 vec4_t pos;
nuclear@0 23 vec3_t norm;
nuclear@0 24 vec2_t tc;
nuclear@0 25 float energy;
nuclear@0 26 int cidx;
nuclear@0 27 };
nuclear@0 28
nuclear@3 29 struct texture {
nuclear@3 30 int width, height;
nuclear@3 31 int xshift, yshift;
nuclear@3 32 unsigned int xmask, ymask;
nuclear@3 33 unsigned char *pixels;
nuclear@3 34 };
nuclear@3 35
nuclear@0 36 struct state {
nuclear@0 37 unsigned int flags;
nuclear@0 38 int ord, frontface, cullface;
nuclear@0 39 int mmode, mtop[2];
nuclear@0 40 mat4_t matrix[2][MATRIX_STACK_SIZE];
nuclear@0 41 int prim;
nuclear@0 42 struct vertex curv, v[4];
nuclear@0 43 int vidx;
nuclear@0 44 int vp[4]; /* viewport */
nuclear@0 45 int col_range; /* color interpolation range */
nuclear@11 46 vec4_t lpos[MAX_LIGHTS];
nuclear@0 47 float lint[MAX_LIGHTS];
nuclear@3 48
nuclear@3 49 struct texture tex;
nuclear@0 50 };
nuclear@0 51
nuclear@0 52 struct framebuffer {
nuclear@0 53 int width, height;
nuclear@0 54 unsigned char *pixels;
nuclear@9 55 unsigned short **zbuf; /* zbuffer broken in ZTILE_SIZE tiles */
nuclear@9 56 int num_ztiles;
nuclear@0 57 };
nuclear@0 58
nuclear@3 59
nuclear@0 60 int mgl_rast_init(struct state *state, struct framebuffer *fbuf);
nuclear@0 61 void mgl_rast_cleanup(void);
nuclear@0 62 void mgl_rast_prepare(void);
nuclear@0 63 void mgl_draw_point(struct vertex *v);
nuclear@0 64 void mgl_draw_line(struct vertex *v0, struct vertex *v1);
nuclear@0 65 void mgl_draw_poly(struct vertex *v, int numv);
nuclear@0 66
nuclear@0 67 #endif /* MGL_IMPL_H_ */