X-Git-Url: http://git.mutantstargoat.com/user/nuclear/?a=blobdiff_plain;ds=sidebyside;f=tools%2Fgltest%2Fsrc%2Fg3demu.c;fp=tools%2Fgltest%2Fsrc%2Fg3demu.c;h=10686153ec37e22d53990895d283391b4825b420;hb=1fc50fb52faab54b3d5e160d3765d866c6cf173a;hp=0000000000000000000000000000000000000000;hpb=45f6f46fe758d15aafccdb69ae837fc7d84ee466;p=dosdemo

diff --git a/tools/gltest/src/g3demu.c b/tools/gltest/src/g3demu.c
new file mode 100644
index 0000000..1068615
--- /dev/null
+++ b/tools/gltest/src/g3demu.c
@@ -0,0 +1,120 @@
+#include <string.h>
+#include <GL/gl.h>
+#include "3dgfx.h"
+
+void g3d_matrix_mode(int mmode)
+{
+	switch(mmode) {
+	case G3D_MODELVIEW:
+		glMatrixMode(GL_MODELVIEW);
+		break;
+	case G3D_PROJECTION:
+		glMatrixMode(GL_PROJECTION);
+		break;
+	}
+}
+
+void g3d_push_matrix(void)
+{
+	glPushMatrix();
+}
+
+void g3d_pop_matrix(void)
+{
+	glPopMatrix();
+}
+
+void g3d_load_identity(void)
+{
+	glLoadIdentity();
+}
+
+const float *g3d_get_matrix(int which, float *mret)
+{
+	static float tmp[16];
+
+	switch(which) {
+	case G3D_MODELVIEW:
+		glGetFloatv(GL_MODELVIEW_MATRIX, tmp);
+		break;
+
+	case G3D_PROJECTION:
+		glGetFloatv(GL_PROJECTION_MATRIX, tmp);
+		break;
+	}
+
+	if(mret) {
+		memcpy(mret, tmp, sizeof tmp);
+	}
+	return tmp;
+}
+
+void g3d_translate(float x, float y, float z)
+{
+	glTranslatef(x, y, z);
+}
+
+void g3d_rotate(float angle, float x, float y, float z)
+{
+	glRotatef(angle, x, y, z);
+}
+
+void g3d_scale(float x, float y, float z)
+{
+	glScalef(x, y, z);
+}
+
+void g3d_draw(int prim, const struct g3d_vertex *varr, int varr_size)
+{
+	g3d_draw_indexed(prim, varr, varr_size, 0, 0);
+}
+
+void g3d_draw_indexed(int prim, const struct g3d_vertex *varr, int varr_size,
+		const uint16_t *iarr, int iarr_size)
+{
+	int i, j, nfaces;
+	int glprim;
+	const struct g3d_vertex *vptr = varr;
+	const uint16_t *iptr = iarr;
+
+	switch(prim) {
+	case G3D_TRIANGLES:
+		glprim = GL_TRIANGLES;
+		break;
+	case G3D_QUADS:
+		glprim = GL_QUADS;
+		break;
+	default:
+		glprim = GL_POLYGON;
+	}
+
+	nfaces = (iarr ? iarr_size : varr_size) / prim;
+	if(prim <= 4) {
+		glBegin(glprim);
+	}
+
+	for(i=0; i<nfaces; i++) {
+		if(glprim == GL_POLYGON) {
+			glBegin(GL_POLYGON);
+		}
+
+		for(j=0; j<prim; j++) {
+			if(iarr) {
+				vptr = varr + *iptr++;
+			}
+			glNormal3f(vptr->nx, vptr->ny, vptr->nz);
+			glColor4b(vptr->r, vptr->g, vptr->b, vptr->a);
+			glTexCoord2f(vptr->u, vptr->v);
+			glVertex4f(vptr->x, vptr->y, vptr->z, vptr->w);
+			++vptr;
+		}
+
+		if(glprim == GL_POLYGON) {
+			glEnd();
+		}
+	}
+
+	if(prim <= 4) {
+		glEnd();
+	}
+}