diff options
Diffstat (limited to 'nx-X11/extras/Mesa/src/mesa/tnl/t_vb_cliptmp.h')
-rw-r--r-- | nx-X11/extras/Mesa/src/mesa/tnl/t_vb_cliptmp.h | 270 |
1 files changed, 0 insertions, 270 deletions
diff --git a/nx-X11/extras/Mesa/src/mesa/tnl/t_vb_cliptmp.h b/nx-X11/extras/Mesa/src/mesa/tnl/t_vb_cliptmp.h deleted file mode 100644 index 1e3a6b02e..000000000 --- a/nx-X11/extras/Mesa/src/mesa/tnl/t_vb_cliptmp.h +++ /dev/null @@ -1,270 +0,0 @@ - -/* - * Mesa 3-D graphics library - * Version: 3.5 - * - * Copyright (C) 1999-2001 Brian Paul All Rights Reserved. - * - * Permission is hereby granted, free of charge, to any person obtaining a - * copy of this software and associated documentation files (the "Software"), - * to deal in the Software without restriction, including without limitation - * the rights to use, copy, modify, merge, publish, distribute, sublicense, - * and/or sell copies of the Software, and to permit persons to whom the - * Software is furnished to do so, subject to the following conditions: - * - * The above copyright notice and this permission notice shall be included - * in all copies or substantial portions of the Software. - * - * 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. - * - * Authors: - * Keith Whitwell <keith@tungstengraphics.com> - */ - - -#define CLIP_DOTPROD(K, A, B, C, D) X(K)*A + Y(K)*B + Z(K)*C + W(K)*D - -#define POLY_CLIP( PLANE, A, B, C, D ) \ -do { \ - if (mask & PLANE) { \ - GLuint idxPrev = inlist[0]; \ - GLfloat dpPrev = CLIP_DOTPROD(idxPrev, A, B, C, D ); \ - 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 = CLIP_DOTPROD(idx, A, B, C, D ); \ - \ - clipmask[idxPrev] |= PLANE; \ - if (!IS_NEGATIVE(dpPrev)) { \ - outlist[outcount++] = idxPrev; \ - clipmask[idxPrev] &= ~PLANE; \ - } \ - \ - if (DIFFERENT_SIGNS(dp, dpPrev)) { \ - GLuint newvert = VB->LastClipped++; \ - VB->ClipMask[newvert] = 0; \ - outlist[outcount++] = newvert; \ - 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 ); \ - } \ - } \ - \ - idxPrev = idx; \ - dpPrev = dp; \ - } \ - \ - if (outcount < 3) \ - return; \ - \ - { \ - GLuint *tmp = inlist; \ - inlist = outlist; \ - outlist = tmp; \ - n = outcount; \ - } \ - } \ -} while (0) - - -#define LINE_CLIP(PLANE, A, B, C, D ) \ -do { \ - if (mask & PLANE) { \ - GLfloat dpI = CLIP_DOTPROD( ii, A, B, C, D ); \ - GLfloat dpJ = CLIP_DOTPROD( jj, A, B, C, D ); \ - \ - if (DIFFERENT_SIGNS(dpI, dpJ)) { \ - GLuint newvert = VB->LastClipped++; \ - VB->ClipMask[newvert] = 0; \ - if (IS_NEGATIVE(dpJ)) { \ - GLfloat t = dpI / (dpI - dpJ); \ - VB->ClipMask[jj] |= PLANE; \ - INTERP_4F( t, coord[newvert], coord[ii], coord[jj] ); \ - interp( ctx, t, newvert, ii, jj, GL_FALSE ); \ - jj = newvert; \ - } else { \ - GLfloat t = dpJ / (dpJ - dpI); \ - VB->ClipMask[ii] |= PLANE; \ - INTERP_4F( t, coord[newvert], coord[jj], coord[ii] ); \ - interp( ctx, t, newvert, jj, ii, GL_FALSE ); \ - ii = newvert; \ - } \ - } \ - else if (IS_NEGATIVE(dpI)) \ - return; \ - } \ -} while (0) - - - -/* Clip a line against the viewport and user clip planes. - */ -static INLINE void -TAG(clip_line)( GLcontext *ctx, GLuint i, GLuint j, GLubyte mask ) -{ - TNLcontext *tnl = TNL_CONTEXT(ctx); - struct vertex_buffer *VB = &tnl->vb; - tnl_interp_func interp = tnl->Driver.Render.Interp; - GLfloat (*coord)[4] = VB->ClipPtr->data; - GLuint ii = i, jj = j, p; - - VB->LastClipped = VB->Count; - - if (mask & 0x3f) { - LINE_CLIP( CLIP_RIGHT_BIT, -1, 0, 0, 1 ); - LINE_CLIP( CLIP_LEFT_BIT, 1, 0, 0, 1 ); - LINE_CLIP( CLIP_TOP_BIT, 0, -1, 0, 1 ); - LINE_CLIP( CLIP_BOTTOM_BIT, 0, 1, 0, 1 ); - LINE_CLIP( CLIP_FAR_BIT, 0, 0, -1, 1 ); - LINE_CLIP( CLIP_NEAR_BIT, 0, 0, 1, 1 ); - } - - if (mask & CLIP_USER_BIT) { - for (p=0;p<MAX_CLIP_PLANES;p++) { - if (ctx->Transform.ClipPlanesEnabled & (1 << 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 ); - } - } - } - - if ((ctx->_TriangleCaps & DD_FLATSHADE) && j != jj) - tnl->Driver.Render.CopyPV( ctx, jj, j ); - - tnl->Driver.Render.ClippedLine( ctx, ii, jj ); -} - - -/* 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 ) -{ - TNLcontext *tnl = TNL_CONTEXT(ctx); - struct vertex_buffer *VB = &tnl->vb; - tnl_interp_func interp = tnl->Driver.Render.Interp; - GLfloat (*coord)[4] = VB->ClipPtr->data; - GLuint pv = v2; - GLuint vlist[2][MAX_CLIPPED_VERTICES]; - GLuint *inlist = vlist[0], *outlist = vlist[1]; - GLuint p; - GLubyte *clipmask = VB->ClipMask; - GLuint n = 3; - - ASSIGN_3V(inlist, v2, v0, v1 ); /* pv rotated to slot zero */ - - VB->LastClipped = VB->Count; - - if (mask & 0x3f) { - POLY_CLIP( CLIP_RIGHT_BIT, -1, 0, 0, 1 ); - POLY_CLIP( CLIP_LEFT_BIT, 1, 0, 0, 1 ); - POLY_CLIP( CLIP_TOP_BIT, 0, -1, 0, 1 ); - POLY_CLIP( CLIP_BOTTOM_BIT, 0, 1, 0, 1 ); - POLY_CLIP( CLIP_FAR_BIT, 0, 0, -1, 1 ); - POLY_CLIP( CLIP_NEAR_BIT, 0, 0, 1, 1 ); - } - - if (mask & CLIP_USER_BIT) { - for (p=0;p<MAX_CLIP_PLANES;p++) { - if (ctx->Transform.ClipPlanesEnabled & (1 << 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 ); - } - } - } - - if (ctx->_TriangleCaps & DD_FLATSHADE) { - if (pv != inlist[0]) { - ASSERT( inlist[0] >= VB->Count ); - tnl->Driver.Render.CopyPV( ctx, inlist[0], pv ); - } - } - - tnl->Driver.Render.ClippedPolygon( ctx, inlist, n ); -} - - -/* 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, - GLubyte mask ) -{ - TNLcontext *tnl = TNL_CONTEXT(ctx); - struct vertex_buffer *VB = &tnl->vb; - tnl_interp_func interp = tnl->Driver.Render.Interp; - GLfloat (*coord)[4] = VB->ClipPtr->data; - GLuint pv = v3; - GLuint vlist[2][MAX_CLIPPED_VERTICES]; - GLuint *inlist = vlist[0], *outlist = vlist[1]; - GLuint p; - GLubyte *clipmask = VB->ClipMask; - GLuint n = 4; - - ASSIGN_4V(inlist, v3, v0, v1, v2 ); /* pv rotated to slot zero */ - - VB->LastClipped = VB->Count; - - if (mask & 0x3f) { - POLY_CLIP( CLIP_RIGHT_BIT, -1, 0, 0, 1 ); - POLY_CLIP( CLIP_LEFT_BIT, 1, 0, 0, 1 ); - POLY_CLIP( CLIP_TOP_BIT, 0, -1, 0, 1 ); - POLY_CLIP( CLIP_BOTTOM_BIT, 0, 1, 0, 1 ); - POLY_CLIP( CLIP_FAR_BIT, 0, 0, -1, 1 ); - POLY_CLIP( CLIP_NEAR_BIT, 0, 0, 1, 1 ); - } - - if (mask & CLIP_USER_BIT) { - for (p=0;p<MAX_CLIP_PLANES;p++) { - if (ctx->Transform.ClipPlanesEnabled & (1 << 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 ); - } - } - } - - if (ctx->_TriangleCaps & DD_FLATSHADE) { - if (pv != inlist[0]) { - ASSERT( inlist[0] >= VB->Count ); - tnl->Driver.Render.CopyPV( ctx, inlist[0], pv ); - } - } - - tnl->Driver.Render.ClippedPolygon( ctx, inlist, n ); -} - -#undef W -#undef Z -#undef Y -#undef X -#undef SIZE -#undef TAG -#undef POLY_CLIP -#undef LINE_CLIP |