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Rework slightly r300_get_primitive_type - make it clearer and more compact..

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This commit is contained in:
Vladimir Dergachev 2004-12-30 20:24:30 +00:00
parent 179cc373f1
commit 24b5e49141
1 changed files with 41 additions and 53 deletions
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94
src/mesa/drivers/dri/r300/r300_render.c
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@ -72,81 +72,69 @@ static int r300_get_primitive_type(r300ContextPtr rmesa,
TNLcontext *tnl = TNL_CONTEXT(ctx);
struct vertex_buffer *VB = &tnl->vb;
GLuint i;
int type=-1;
int type=-1, min_vertices=0;
char *name="UNKNOWN";
if(end<=start)return -1; /* do we need to watch for this ? */
fprintf(stderr, "[%d-%d]", start, end);
switch (prim & PRIM_MODE_MASK) {
case GL_LINES:
fprintf(stderr, "L ");
case GL_POINTS:
name="P";
type=R300_VAP_VF_CNTL__PRIM_POINTS;
min_vertices=1;
break;
case GL_LINES:
name="L";
type=R300_VAP_VF_CNTL__PRIM_LINES;
if(end<start+2){
fprintf(stderr, "Not enough vertices\n");
return -1; /* need enough vertices for Q */
}
break;
case GL_LINE_STRIP:
fprintf(stderr, "LS ");
min_vertices=2;
break;
case GL_LINE_STRIP:
name="LS";
type=R300_VAP_VF_CNTL__PRIM_LINE_STRIP;
if(end<start+2){
fprintf(stderr, "Not enough vertices\n");
return -1; /* need enough vertices for Q */
}
min_vertices=2;
break;
case GL_LINE_LOOP:
fprintf(stderr, "LL ");
case GL_LINE_LOOP:
name="LL";
min_vertices=2;
return -1;
if(end<start+2){
fprintf(stderr, "Not enough vertices\n");
return -1; /* need enough vertices for Q */
}
break;
case GL_TRIANGLES:
fprintf(stderr, "T ");
case GL_TRIANGLES:
name="T";
type=R300_VAP_VF_CNTL__PRIM_TRIANGLES;
if(end<start+3){
fprintf(stderr, "Not enough vertices\n");
return -1; /* need enough vertices for Q */
}
min_vertices=3;
break;
case GL_TRIANGLE_STRIP:
fprintf(stderr, "TS ");
case GL_TRIANGLE_STRIP:
name="TS";
type=R300_VAP_VF_CNTL__PRIM_TRIANGLE_STRIP;
if(end<start+3){
fprintf(stderr, "Not enough vertices\n");
return -1; /* need enough vertices for Q */
}
min_vertices=3;
break;
case GL_TRIANGLE_FAN:
fprintf(stderr, "TF ");
case GL_TRIANGLE_FAN:
name="TF";
type=R300_VAP_VF_CNTL__PRIM_TRIANGLE_FAN;
if(end<start+3){
fprintf(stderr, "Not enough vertices\n");
return -1; /* need enough vertices for Q */
}
min_vertices=3;
break;
case GL_QUADS:
fprintf(stderr, "Q ");
case GL_QUADS:
name="Q";
type=R300_VAP_VF_CNTL__PRIM_QUADS;
if(end<start+4){
fprintf(stderr, "Not enough vertices\n");
return -1; /* need enough vertices for Q */
}
min_vertices=4;
break;
case GL_QUAD_STRIP:
fprintf(stderr, "QS ");
case GL_QUAD_STRIP:
name="QS";
type=R300_VAP_VF_CNTL__PRIM_QUAD_STRIP;
if(end<start+4){
fprintf(stderr, "Not enough vertices\n");
return -1; /* need enough vertices for Q */
}
min_vertices=4;
break;
default:
default:
fprintf(stderr, "Cannot handle primitive %02x ", prim & PRIM_MODE_MASK);
return -1;
break;
}
}
#if 1
fprintf(stderr, "[%d-%d]%s ", start, end, name);
#endif
if(start+min_vertices>=end){
fprintf(stderr, "Not enough vertices\n");
return -1;
}
return type;
}