summaryrefslogtreecommitdiff
path: root/src/mesa/tnl
diff options
context:
space:
mode:
Diffstat (limited to 'src/mesa/tnl')
-rw-r--r--src/mesa/tnl/t_context.h1
-rw-r--r--src/mesa/tnl/t_vb_cliptmp.h103
-rw-r--r--src/mesa/tnl/t_vb_program.c15
-rw-r--r--src/mesa/tnl/t_vb_vertex.c31
4 files changed, 18 insertions, 132 deletions
diff --git a/src/mesa/tnl/t_context.h b/src/mesa/tnl/t_context.h
index ca4edcfcb9..6137c2d2fe 100644
--- a/src/mesa/tnl/t_context.h
+++ b/src/mesa/tnl/t_context.h
@@ -207,7 +207,6 @@ struct vertex_buffer
GLvector4f *EyePtr; /* _TNL_BIT_POS */
GLvector4f *ClipPtr; /* _TNL_BIT_POS */
GLvector4f *NdcPtr; /* _TNL_BIT_POS */
- GLfloat *ClipDistancePtr[MAX_CLIP_PLANES]; /* _TNL_BIT_POS */
GLubyte ClipOrMask; /* _TNL_BIT_POS */
GLubyte ClipAndMask; /* _TNL_BIT_POS */
GLubyte *ClipMask; /* _TNL_BIT_POS */
diff --git a/src/mesa/tnl/t_vb_cliptmp.h b/src/mesa/tnl/t_vb_cliptmp.h
index 0d2183a9e6..618b8b3130 100644
--- a/src/mesa/tnl/t_vb_cliptmp.h
+++ b/src/mesa/tnl/t_vb_cliptmp.h
@@ -80,58 +80,6 @@ do { \
} while (0)
-#define POLY_USERCLIP(PLANE) \
-do { \
- if (mask & CLIP_USER_BIT) { \
- GLuint idxPrev = inlist[0]; \
- GLfloat dpPrev = VB->ClipDistancePtr[PLANE][idxPrev]; \
- GLuint outcount = 0; \
- GLuint i; \
- \
- inlist[n] = inlist[0]; /* prevent rotation of vertices */ \
- for (i = 1; i <= n; i++) { \
- GLuint idx = inlist[i]; \
- GLfloat dp = VB->ClipDistancePtr[PLANE][idx]; \
- \
- if (!IS_NEGATIVE(dpPrev)) { \
- outlist[outcount++] = idxPrev; \
- } \
- \
- if (DIFFERENT_SIGNS(dp, dpPrev)) { \
- if (IS_NEGATIVE(dp)) { \
- /* Going out of bounds. Avoid division by zero as we \
- * know dp != dpPrev from DIFFERENT_SIGNS, above. \
- */ \
- GLfloat t = dp / (dp - dpPrev); \
- INTERP_4F( t, coord[newvert], coord[idx], coord[idxPrev]); \
- interp( ctx, t, newvert, idx, idxPrev, GL_TRUE ); \
- } else { \
- /* Coming back in. \
- */ \
- GLfloat t = dpPrev / (dpPrev - dp); \
- INTERP_4F( t, coord[newvert], coord[idxPrev], coord[idx]); \
- interp( ctx, t, newvert, idxPrev, idx, GL_FALSE ); \
- } \
- outlist[outcount++] = newvert++; \
- } \
- \
- idxPrev = idx; \
- dpPrev = dp; \
- } \
- \
- if (outcount < 3) \
- return; \
- \
- { \
- GLuint *tmp = inlist; \
- inlist = outlist; \
- outlist = tmp; \
- n = outcount; \
- } \
- } \
-} while (0)
-
-
#define LINE_CLIP(PLANE_BIT, A, B, C, D ) \
do { \
if (mask & PLANE_BIT) { \
@@ -163,37 +111,6 @@ do { \
} while (0)
-#define LINE_USERCLIP(PLANE) \
-do { \
- if (mask & CLIP_USER_BIT) { \
- const GLfloat dp0 = VB->ClipDistancePtr[PLANE][v0]; \
- const GLfloat dp1 = VB->ClipDistancePtr[PLANE][v1]; \
- const GLboolean neg_dp0 = IS_NEGATIVE(dp0); \
- const GLboolean neg_dp1 = IS_NEGATIVE(dp1); \
- \
- /* 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: \
- */ \
- if (neg_dp0 && neg_dp1) \
- return; /* both vertices outside clip plane: discard */ \
- \
- if (neg_dp1) { \
- GLfloat t = dp1 / (dp1 - dp0); \
- if (t > t1) t1 = t; \
- } else if (neg_dp0) { \
- GLfloat t = dp0 / (dp0 - dp1); \
- if (t > t0) t0 = t; \
- } \
- if (t0 + t1 >= 1.0) \
- return; /* discard */ \
- } \
-} while (0)
-
-
/* Clip a line against the viewport and user clip planes.
*/
@@ -222,7 +139,11 @@ TAG(clip_line)( GLcontext *ctx, GLuint v0, GLuint v1, GLubyte mask )
if (mask & CLIP_USER_BIT) {
for (p = 0; p < ctx->Const.MaxClipPlanes; p++) {
if (ctx->Transform.ClipPlanesEnabled & (1 << p)) {
- LINE_USERCLIP(p);
+ const GLfloat a = ctx->Transform._ClipUserPlane[p][0];
+ const GLfloat b = ctx->Transform._ClipUserPlane[p][1];
+ const GLfloat c = ctx->Transform._ClipUserPlane[p][2];
+ const GLfloat d = ctx->Transform._ClipUserPlane[p][3];
+ LINE_CLIP( CLIP_USER_BIT, a, b, c, d );
}
}
}
@@ -307,7 +228,11 @@ TAG(clip_tri)( GLcontext *ctx, GLuint v0, GLuint v1, GLuint v2, GLubyte mask )
if (mask & CLIP_USER_BIT) {
for (p = 0; p < ctx->Const.MaxClipPlanes; p++) {
if (ctx->Transform.ClipPlanesEnabled & (1 << p)) {
- POLY_USERCLIP(p);
+ const GLfloat a = ctx->Transform._ClipUserPlane[p][0];
+ const GLfloat b = ctx->Transform._ClipUserPlane[p][1];
+ const GLfloat c = ctx->Transform._ClipUserPlane[p][2];
+ const GLfloat d = ctx->Transform._ClipUserPlane[p][3];
+ POLY_CLIP( CLIP_USER_BIT, a, b, c, d );
}
}
}
@@ -366,7 +291,11 @@ TAG(clip_quad)( GLcontext *ctx, GLuint v0, GLuint v1, GLuint v2, GLuint v3,
if (mask & CLIP_USER_BIT) {
for (p = 0; p < ctx->Const.MaxClipPlanes; p++) {
if (ctx->Transform.ClipPlanesEnabled & (1 << p)) {
- POLY_USERCLIP(p);
+ const GLfloat a = ctx->Transform._ClipUserPlane[p][0];
+ const GLfloat b = ctx->Transform._ClipUserPlane[p][1];
+ const GLfloat c = ctx->Transform._ClipUserPlane[p][2];
+ const GLfloat d = ctx->Transform._ClipUserPlane[p][3];
+ POLY_CLIP( CLIP_USER_BIT, a, b, c, d );
}
}
}
@@ -388,6 +317,4 @@ TAG(clip_quad)( GLcontext *ctx, GLuint v0, GLuint v1, GLuint v2, GLuint v3,
#undef SIZE
#undef TAG
#undef POLY_CLIP
-#undef POLY_USERCLIP
#undef LINE_CLIP
-#undef LINE_USERCLIP
diff --git a/src/mesa/tnl/t_vb_program.c b/src/mesa/tnl/t_vb_program.c
index 5fb83c2b01..c10a27614f 100644
--- a/src/mesa/tnl/t_vb_program.c
+++ b/src/mesa/tnl/t_vb_program.c
@@ -66,7 +66,6 @@ struct vp_stage_data {
GLvector4f results[VERT_RESULT_MAX];
GLvector4f ndcCoords; /**< normalized device coords */
- GLfloat *clipdistance[MAX_CLIP_PLANES];
GLubyte *clipmask; /**< clip flags */
GLubyte ormask, andmask; /**< for clipping */
};
@@ -78,7 +77,6 @@ struct vp_stage_data {
static void
userclip( GLcontext *ctx,
GLvector4f *clip,
- GLfloat *clipdistance[MAX_CLIP_PLANES],
GLubyte *clipmask,
GLubyte *clipormask,
GLubyte *clipandmask )
@@ -107,8 +105,6 @@ userclip( GLcontext *ctx,
clipmask[i] |= CLIP_USER_BIT;
}
- clipdistance[p][i] = dp;
-
STRIDE_F(coord, stride);
}
@@ -168,7 +164,6 @@ do_ndc_cliptest(GLcontext *ctx, struct vp_stage_data *store)
ctx->VertexProgram.Current->IsPositionInvariant)) {
userclip( ctx,
VB->ClipPtr,
- store->clipdistance,
store->clipmask,
&store->ormask,
&store->andmask );
@@ -176,9 +171,6 @@ do_ndc_cliptest(GLcontext *ctx, struct vp_stage_data *store)
if (store->andmask) {
return GL_FALSE;
}
-
- memcpy(VB->ClipDistancePtr, store->clipdistance,
- sizeof(store->clipdistance));
}
VB->ClipAndMask = store->andmask;
@@ -522,10 +514,6 @@ init_vp(GLcontext *ctx, struct tnl_pipeline_stage *stage)
_mesa_vector4f_alloc( &store->ndcCoords, 0, size, 32 );
store->clipmask = (GLubyte *) ALIGN_MALLOC(sizeof(GLubyte)*size, 32 );
- for (i = 0; i < MAX_CLIP_PLANES; i++)
- store->clipdistance[i] =
- (GLfloat *) ALIGN_MALLOC(sizeof(GLfloat) * size, 32);
-
return GL_TRUE;
}
@@ -549,9 +537,6 @@ dtr(struct tnl_pipeline_stage *stage)
_mesa_vector4f_free( &store->ndcCoords );
ALIGN_FREE( store->clipmask );
- for (i = 0; i < MAX_CLIP_PLANES; i++)
- ALIGN_FREE(store->clipdistance[i]);
-
FREE( store );
stage->privatePtr = NULL;
}
diff --git a/src/mesa/tnl/t_vb_vertex.c b/src/mesa/tnl/t_vb_vertex.c
index 2a61ff1177..4734754ea4 100644
--- a/src/mesa/tnl/t_vb_vertex.c
+++ b/src/mesa/tnl/t_vb_vertex.c
@@ -44,7 +44,6 @@ struct vertex_stage_data {
GLvector4f eye;
GLvector4f clip;
GLvector4f proj;
- GLfloat *clipdistance[MAX_CLIP_PLANES];
GLubyte *clipmask;
GLubyte ormask;
GLubyte andmask;
@@ -57,12 +56,11 @@ struct vertex_stage_data {
/* This function implements cliptesting for user-defined clip planes.
* The clipping of primitives to these planes is implemented in
- * t_vp_cliptmp.h.
+ * t_render_clip.h.
*/
#define USER_CLIPTEST(NAME, SZ) \
static void NAME( GLcontext *ctx, \
GLvector4f *clip, \
- GLfloat *clipdistances[MAX_CLIP_PLANES], \
GLubyte *clipmask, \
GLubyte *clipormask, \
GLubyte *clipandmask ) \
@@ -90,8 +88,6 @@ static void NAME( GLcontext *ctx, \
clipmask[i] |= CLIP_USER_BIT; \
} \
\
- clipdistances[p][i] = dp; \
- \
STRIDE_F(coord, stride); \
} \
\
@@ -111,9 +107,8 @@ USER_CLIPTEST(userclip3, 3)
USER_CLIPTEST(userclip4, 4)
static void (*(usercliptab[5]))( GLcontext *,
- GLvector4f *,
- GLfloat *[MAX_CLIP_PLANES],
- GLubyte *, GLubyte *, GLubyte * ) =
+ GLvector4f *, GLubyte *,
+ GLubyte *, GLubyte * ) =
{
NULL,
NULL,
@@ -219,16 +214,12 @@ static GLboolean run_vertex_stage( GLcontext *ctx,
if (ctx->Transform.ClipPlanesEnabled) {
usercliptab[VB->ClipPtr->size]( ctx,
VB->ClipPtr,
- store->clipdistance,
store->clipmask,
&store->ormask,
&store->andmask );
if (store->andmask)
return GL_FALSE;
-
- memcpy(VB->ClipDistancePtr, store->clipdistance,
- sizeof(store->clipdistance));
}
VB->ClipAndMask = store->andmask;
@@ -245,7 +236,6 @@ static GLboolean init_vertex_stage( GLcontext *ctx,
struct vertex_buffer *VB = &TNL_CONTEXT(ctx)->vb;
struct vertex_stage_data *store;
GLuint size = VB->Size;
- unsigned i;
stage->privatePtr = CALLOC(sizeof(*store));
store = VERTEX_STAGE_DATA(stage);
@@ -257,17 +247,8 @@ static GLboolean init_vertex_stage( GLcontext *ctx,
_mesa_vector4f_alloc( &store->proj, 0, size, 32 );
store->clipmask = (GLubyte *) ALIGN_MALLOC(sizeof(GLubyte)*size, 32 );
- for (i = 0; i < MAX_CLIP_PLANES; i++)
- store->clipdistance[i] =
- (GLfloat *) ALIGN_MALLOC(sizeof(GLfloat) * size, 32);
if (!store->clipmask ||
- !store->clipdistance[0] ||
- !store->clipdistance[1] ||
- !store->clipdistance[2] ||
- !store->clipdistance[3] ||
- !store->clipdistance[4] ||
- !store->clipdistance[5] ||
!store->eye.data ||
!store->clip.data ||
!store->proj.data)
@@ -281,16 +262,10 @@ static void dtr( struct tnl_pipeline_stage *stage )
struct vertex_stage_data *store = VERTEX_STAGE_DATA(stage);
if (store) {
- unsigned i;
-
_mesa_vector4f_free( &store->eye );
_mesa_vector4f_free( &store->clip );
_mesa_vector4f_free( &store->proj );
ALIGN_FREE( store->clipmask );
-
- for (i = 0; i < MAX_CLIP_PLANES; i++)
- ALIGN_FREE(store->clipdistance[i]);
-
FREE(store);
stage->privatePtr = NULL;
stage->run = init_vertex_stage;
generated by cgit v1.2.3 (git 2.39.1) at 2024-06-05 21:48:53 +0000