X-Git-Url: http://git.mutantstargoat.com/user/nuclear/?p=dosdemo;a=blobdiff_plain;f=src%2F3dgfx%2F3dgfx.h;fp=src%2F3dgfx%2F3dgfx.h;h=e317fabddf1c9bf1f6d2774eecfca5a8f845327c;hp=0000000000000000000000000000000000000000;hb=57bd2dc519c47f434e3e5acf998fb9c72448cbce;hpb=d956a9d9273eebfacfda58cb3bafff017269d5dc

diff --git a/src/3dgfx/3dgfx.h b/src/3dgfx/3dgfx.h
new file mode 100644
index 0000000..e317fab
--- /dev/null
+++ b/src/3dgfx/3dgfx.h
@@ -0,0 +1,145 @@
+#ifndef THREEDGFX_H_
+#define THREEDGFX_H_
+
+#include "inttypes.h"
+#include "gfxutil.h"
+
+#define G3D_PIXFMT16
+typedef uint16_t g3d_pixel;
+
+#ifdef G3D_PIXFMT16
+#define G3D_PACK_RGB(r, g, b)	PACK_RGB16(r, g, b)
+#define G3D_UNPACK_R(c)			UNPACK_R16(c)
+#define G3D_UNPACK_G(c)			UNPACK_G16(c)
+#define G3D_UNPACK_B(c)			UNPACK_B16(c)
+#endif
+#ifdef G3D_PIXFMT32
+#define G3D_PACK_RGB(r, g, b)	PACK_RGB32(r, g, b)
+#define G3D_UNPACK_R(c)			UNPACK_R32(c)
+#define G3D_UNPACK_G(c)			UNPACK_G32(c)
+#define G3D_UNPACK_B(c)			UNPACK_B32(c)
+#endif
+
+
+struct g3d_vertex {
+	float x, y, z, w;
+	float nx, ny, nz;
+	float u, v;
+	unsigned char r, g, b, a;
+};
+
+enum {
+	G3D_POINTS = 1,
+	G3D_LINES = 2,
+	G3D_TRIANGLES = 3,
+	G3D_QUADS = 4
+};
+
+/* g3d_enable/g3d_disable bits */
+enum {
+	G3D_CULL_FACE	= 0x000001,
+	G3D_DEPTH_TEST	= 0x000002,	/* XXX not implemented */
+	G3D_LIGHTING	= 0x000004,
+	G3D_LIGHT0		= 0x000008,
+	G3D_LIGHT1		= 0x000010,
+	G3D_LIGHT2		= 0x000020,
+	G3D_LIGHT3		= 0x000040,
+	G3D_TEXTURE_2D	= 0x000080,
+	G3D_ALPHA_BLEND	= 0x000100,
+	G3D_TEXTURE_GEN	= 0x000200,
+	G3D_CLIP_FRUSTUM = 0x000800,/* when disabled, don't clip against the frustum */
+	G3D_CLIP_PLANE0 = 0x001000,	/* user-defined 3D clipping planes XXX not impl. */
+	G3D_CLIP_PLANE1 = 0x002000,
+	G3D_CLIP_PLANE2 = 0x004000,
+	G3D_CLIP_PLANE3 = 0x008000,
+
+	G3D_TEXTURE_MAT	= 0x010000,
+	G3D_SPECULAR	= 0x020000,
+
+	G3D_ADD_BLEND	= 0x040000,
+
+	G3D_ALL = 0x7fffffff
+};
+
+/* arg to g3d_front_face */
+enum { G3D_CCW, G3D_CW };
+
+/* arg to g3d_polygon_mode */
+enum {
+	G3D_WIRE,
+	G3D_FLAT,
+	G3D_GOURAUD
+};
+
+/* matrix stacks */
+enum {
+	G3D_MODELVIEW,
+	G3D_PROJECTION,
+	G3D_TEXTURE,
+
+	G3D_NUM_MATRICES
+};
+
+int g3d_init(void);
+void g3d_destroy(void);
+void g3d_reset(void);
+
+void g3d_framebuffer(int width, int height, void *pixels);
+void g3d_framebuffer_addr(void *pixels);
+void g3d_viewport(int x, int y, int w, int h);
+
+void g3d_enable(unsigned int opt);
+void g3d_disable(unsigned int opt);
+void g3d_setopt(unsigned int opt, unsigned int mask);
+unsigned int g3d_getopt(unsigned int mask);
+
+void g3d_front_face(unsigned int order);
+void g3d_polygon_mode(int pmode);
+int g3d_get_polygon_mode(void);
+
+void g3d_matrix_mode(int mmode);
+
+void g3d_load_identity(void);
+void g3d_load_matrix(const float *m);
+void g3d_mult_matrix(const float *m);
+void g3d_push_matrix(void);
+void g3d_pop_matrix(void);
+
+void g3d_translate(float x, float y, float z);
+void g3d_rotate(float angle, float x, float y, float z);
+void g3d_scale(float x, float y, float z);
+void g3d_ortho(float left, float right, float bottom, float top, float znear, float zfar);
+void g3d_frustum(float left, float right, float bottom, float top, float znear, float zfar);
+void g3d_perspective(float vfov, float aspect, float znear, float zfar);
+
+/* returns pointer to the *internal* matrix, and if argument m is not null,
+ * also copies the internal matrix there. */
+const float *g3d_get_matrix(int which, float *m);
+
+void g3d_light_pos(int idx, float x, float y, float z);
+void g3d_light_dir(int idx, float x, float y, float z);
+void g3d_light_color(int idx, float r, float g, float b);
+
+void g3d_light_ambient(float r, float g, float b);
+
+void g3d_mtl_diffuse(float r, float g, float b);
+void g3d_mtl_specular(float r, float g, float b);
+void g3d_mtl_shininess(float shin);
+
+void g3d_set_texture(int xsz, int ysz, void *pixels);
+
+void g3d_draw(int prim, const struct g3d_vertex *varr, int varr_size);
+void g3d_draw_indexed(int prim, const struct g3d_vertex *varr, int varr_size,
+		const uint16_t *iarr, int iarr_size);
+
+void g3d_begin(int prim);
+void g3d_end(void);
+void g3d_vertex(float x, float y, float z);
+void g3d_normal(float x, float y, float z);
+void g3d_color3b(unsigned char r, unsigned char g, unsigned char b);
+void g3d_color4b(unsigned char r, unsigned char g, unsigned char b, unsigned char a);
+void g3d_color3f(float r, float g, float b);
+void g3d_color4f(float r, float g, float b, float a);
+void g3d_texcoord(float u, float v);
+
+#endif	/* THREEDGFX_H_ */