/*
* Mesa 3-D graphics library
- * Version: 6.5.2
*
* Copyright (C) 1999-2006 Brian Paul All Rights Reserved.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
- * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
- * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
- * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
*
* Authors:
- * Keith Whitwell <keith@tungstengraphics.com>
+ * Keith Whitwell <keithw@vmware.com>
*/
GLuint idx = inlist[i]; \
GLfloat dp = CLIP_DOTPROD(idx, A, B, C, D ); \
\
- if (!IS_NEGATIVE(dpPrev)) { \
+ if (dpPrev >= 0.0f) { \
outlist[outcount++] = idxPrev; \
} \
\
if (DIFFERENT_SIGNS(dp, dpPrev)) { \
- if (IS_NEGATIVE(dp)) { \
+ if (dp < 0.0f) { \
/* Going out of bounds. Avoid division by zero as we \
* know dp != dpPrev from DIFFERENT_SIGNS, above. \
*/ \
if (mask & PLANE_BIT) { \
const GLfloat dp0 = CLIP_DOTPROD( v0, A, B, C, D ); \
const GLfloat dp1 = CLIP_DOTPROD( v1, A, B, C, D ); \
- const GLboolean neg_dp0 = IS_NEGATIVE(dp0); \
- const GLboolean neg_dp1 = IS_NEGATIVE(dp1); \
+ const GLboolean neg_dp0 = dp0 < 0.0f; \
+ const GLboolean neg_dp1 = dp1 < 0.0f; \
\
/* For regular clipping, we know from the clipmask that one \
* (or both) of these must be negative (otherwise we wouldn't \
* be here). \
* For userclip, there is only a single bit for all active \
* planes, so we can end up here when there is nothing to do, \
- * hence the second IS_NEGATIVE() test: \
+ * hence the second < 0.0f test: \
*/ \
if (neg_dp0 && neg_dp1) \
return; /* both vertices outside clip plane: discard */ \
/* Clip a line against the viewport and user clip planes.
*/
-static INLINE void
-TAG(clip_line)( GLcontext *ctx, GLuint v0, GLuint v1, GLubyte mask )
+static inline void
+TAG(clip_line)( struct gl_context *ctx, GLuint v0, GLuint v1, GLubyte mask )
{
TNLcontext *tnl = TNL_CONTEXT(ctx);
struct vertex_buffer *VB = &tnl->vb;
newvert++;
}
else {
- ASSERT(t0 == 0.0);
+ assert(t0 == 0.0);
}
/* Note: we need to use vertex v0_orig when computing the new
newvert++;
}
else {
- ASSERT(t1 == 0.0);
+ assert(t1 == 0.0);
}
tnl->Driver.Render.ClippedLine( ctx, v0, v1 );
/* Clip a triangle against the viewport and user clip planes.
*/
-static INLINE void
-TAG(clip_tri)( GLcontext *ctx, GLuint v0, GLuint v1, GLuint v2, GLubyte mask )
+static inline void
+TAG(clip_tri)( struct gl_context *ctx, GLuint v0, GLuint v1, GLuint v2, GLubyte mask )
{
TNLcontext *tnl = TNL_CONTEXT(ctx);
struct vertex_buffer *VB = &tnl->vb;
ASSIGN_3V(inlist, v2, v0, v1 ); /* pv rotated to slot zero */
+ if (0) {
+ /* print pre-clip vertex coords */
+ GLuint i, j;
+ printf("pre clip:\n");
+ for (i = 0; i < n; i++) {
+ j = inlist[i];
+ printf(" %u: %u: %f, %f, %f, %f\n",
+ i, j,
+ coord[j][0], coord[j][1], coord[j][2], coord[j][3]);
+ assert(!IS_INF_OR_NAN(coord[j][0]));
+ assert(!IS_INF_OR_NAN(coord[j][1]));
+ assert(!IS_INF_OR_NAN(coord[j][2]));
+ assert(!IS_INF_OR_NAN(coord[j][3]));
+ }
+ }
+
+
if (mask & CLIP_FRUSTUM_BITS) {
POLY_CLIP( CLIP_RIGHT_BIT, -1, 0, 0, 1 );
POLY_CLIP( CLIP_LEFT_BIT, 1, 0, 0, 1 );
if (ctx->Light.ShadeModel == GL_FLAT) {
if (pv != inlist[0]) {
- ASSERT( inlist[0] >= VB->Count );
+ assert( inlist[0] >= VB->Count );
tnl->Driver.Render.CopyPV( ctx, inlist[0], pv );
}
}
if (0) {
- /* print pre/post-clip vertex coords */
+ /* print post-clip vertex coords */
GLuint i, j;
- _mesa_printf("pre clip\n");
- for (i = 0; i < 3; i++) {
- j = outlist[i];
- _mesa_printf(" %u: %u: %f, %f, %f, %f\n",
- i, j,
- coord[j][0], coord[j][1], coord[j][2], coord[j][3]);
- }
- _mesa_printf("post clip\n");
+ printf("post clip:\n");
for (i = 0; i < n; i++) {
j = inlist[i];
- _mesa_printf(" %u: %u: %f, %f, %f, %f\n",
- i, j,
- coord[j][0], coord[j][1], coord[j][2], coord[j][3]);
+ printf(" %u: %u: %f, %f, %f, %f\n",
+ i, j,
+ coord[j][0], coord[j][1], coord[j][2], coord[j][3]);
}
}
/* Clip a quad against the viewport and user clip planes.
*/
-static INLINE void
-TAG(clip_quad)( GLcontext *ctx, GLuint v0, GLuint v1, GLuint v2, GLuint v3,
+static inline void
+TAG(clip_quad)( struct gl_context *ctx, GLuint v0, GLuint v1, GLuint v2, GLuint v3,
GLubyte mask )
{
TNLcontext *tnl = TNL_CONTEXT(ctx);
if (ctx->Light.ShadeModel == GL_FLAT) {
if (pv != inlist[0]) {
- ASSERT( inlist[0] >= VB->Count );
+ assert( inlist[0] >= VB->Count );
tnl->Driver.Render.CopyPV( ctx, inlist[0], pv );
}
}
projects / mesa.git / blobdiff