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remove unneeded casts, added comments

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This commit is contained in:
Brian
2007-07-10 14:36:10 -06:00
parent 1deafdb1de
commit 6aa9c8ebc1
1 changed files with 5 additions and 5 deletions
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10
src/mesa/pipe/draw/draw_cull.c
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@@ -64,19 +64,19 @@ static void cull_tri( struct prim_stage *stage,
struct prim_header *header )
{
/* Window coords: */
GLfloat *v0 = (GLfloat *)&(header->v[0]->data[0]);
GLfloat *v1 = (GLfloat *)&(header->v[1]->data[0]);
GLfloat *v2 = (GLfloat *)&(header->v[2]->data[0]);
const GLfloat *v0 = header->v[0]->data[0];
const GLfloat *v1 = header->v[1]->data[0];
const GLfloat *v2 = header->v[2]->data[0];
/* edge vectors e = v0 - v2, f = v1 - v2 */
GLfloat ex = v0[0] - v2[0];
GLfloat ey = v0[1] - v2[1];
GLfloat fx = v1[0] - v2[0];
GLfloat fy = v1[1] - v2[1];
/* det = cross(e,f).z */
header->det = ex * fy - ey * fx;
_mesa_printf("%s %f\n", __FUNCTION__, header->det );
if (header->det != 0) {
/* non-zero area */
GLuint mode = (header->det < 0) ? PIPE_WINDING_CW : PIPE_WINDING_CCW;