/* $Id: ss_triangle.c,v 1.17 2002/10/02 23:24:04 brianp Exp $ */ /* * 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 */ #include "glheader.h" #include "colormac.h" #include "macros.h" #include "mtypes.h" #include "tnl/t_context.h" #include "ss_triangle.h" #include "ss_context.h" #define SS_RGBA_BIT 0x1 #define SS_OFFSET_BIT 0x2 #define SS_TWOSIDE_BIT 0x4 #define SS_UNFILLED_BIT 0x8 #define SS_MAX_TRIFUNC 0x10 static triangle_func tri_tab[SS_MAX_TRIFUNC]; static quad_func quad_tab[SS_MAX_TRIFUNC]; static void _swsetup_render_line_tri( GLcontext *ctx, GLuint e0, GLuint e1, GLuint e2 ) { SScontext *swsetup = SWSETUP_CONTEXT(ctx); struct vertex_buffer *VB = &TNL_CONTEXT(ctx)->vb; GLubyte *ef = VB->EdgeFlag; SWvertex *verts = swsetup->verts; SWvertex *v0 = &verts[e0]; SWvertex *v1 = &verts[e1]; SWvertex *v2 = &verts[e2]; GLchan c[2][4]; GLchan s[2][4]; GLuint i[2]; if (ctx->_TriangleCaps & DD_FLATSHADE) { COPY_CHAN4(c[0], v0->color); COPY_CHAN4(c[1], v1->color); COPY_CHAN4(s[0], v0->specular); COPY_CHAN4(s[1], v1->specular); i[0] = v0->index; i[1] = v1->index; COPY_CHAN4(v0->color, v2->color); COPY_CHAN4(v1->color, v2->color); COPY_CHAN4(v0->specular, v2->specular); COPY_CHAN4(v1->specular, v2->specular); v0->index = v2->index; v1->index = v2->index; } if (swsetup->render_prim == GL_POLYGON) { if (ef[e2]) _swrast_Line( ctx, v2, v0 ); if (ef[e0]) _swrast_Line( ctx, v0, v1 ); if (ef[e1]) _swrast_Line( ctx, v1, v2 ); } else { if (ef[e0]) _swrast_Line( ctx, v0, v1 ); if (ef[e1]) _swrast_Line( ctx, v1, v2 ); if (ef[e2]) _swrast_Line( ctx, v2, v0 ); } if (ctx->_TriangleCaps & DD_FLATSHADE) { COPY_CHAN4(v0->color, c[0]); COPY_CHAN4(v1->color, c[1]); COPY_CHAN4(v0->specular, s[0]); COPY_CHAN4(v1->specular, s[1]); v0->index = i[0]; v1->index = i[1]; } } static void _swsetup_render_point_tri( GLcontext *ctx, GLuint e0, GLuint e1, GLuint e2 ) { SScontext *swsetup = SWSETUP_CONTEXT(ctx); struct vertex_buffer *VB = &TNL_CONTEXT(ctx)->vb; GLubyte *ef = VB->EdgeFlag; SWvertex *verts = swsetup->verts; SWvertex *v0 = &verts[e0]; SWvertex *v1 = &verts[e1]; SWvertex *v2 = &verts[e2]; GLchan c[2][4]; GLchan s[2][4]; GLuint i[2]; if (ctx->_TriangleCaps & DD_FLATSHADE) { COPY_CHAN4(c[0], v0->color); COPY_CHAN4(c[1], v1->color); COPY_CHAN4(s[0], v0->specular); COPY_CHAN4(s[1], v1->specular); i[0] = v0->index; i[1] = v1->index; COPY_CHAN4(v0->color, v2->color); COPY_CHAN4(v1->color, v2->color); COPY_CHAN4(v0->specular, v2->specular); COPY_CHAN4(v1->specular, v2->specular); v0->index = v2->index; v1->index = v2->index; } if (ef[e0]) _swrast_Point( ctx, v0 ); if (ef[e1]) _swrast_Point( ctx, v1 ); if (ef[e2]) _swrast_Point( ctx, v2 ); if (ctx->_TriangleCaps & DD_FLATSHADE) { COPY_CHAN4(v0->color, c[0]); COPY_CHAN4(v1->color, c[1]); COPY_CHAN4(v0->specular, s[0]); COPY_CHAN4(v1->specular, s[1]); v0->index = i[0]; v1->index = i[1]; } } #define SS_COLOR(a,b) COPY_CHAN4(a,b) #define SS_SPEC(a,b) COPY_3V(a,b) #define SS_IND(a,b) (a = b) #define IND (0) #define TAG(x) x #include "ss_tritmp.h" #define IND (SS_OFFSET_BIT) #define TAG(x) x##_offset #include "ss_tritmp.h" #define IND (SS_TWOSIDE_BIT) #define TAG(x) x##_twoside #include "ss_tritmp.h" #define IND (SS_OFFSET_BIT|SS_TWOSIDE_BIT) #define TAG(x) x##_offset_twoside #include "ss_tritmp.h" #define IND (SS_UNFILLED_BIT) #define TAG(x) x##_unfilled #include "ss_tritmp.h" #define IND (SS_OFFSET_BIT|SS_UNFILLED_BIT) #define TAG(x) x##_offset_unfilled #include "ss_tritmp.h" #define IND (SS_TWOSIDE_BIT|SS_UNFILLED_BIT) #define TAG(x) x##_twoside_unfilled #include "ss_tritmp.h" #define IND (SS_OFFSET_BIT|SS_TWOSIDE_BIT|SS_UNFILLED_BIT) #define TAG(x) x##_offset_twoside_unfilled #include "ss_tritmp.h" #define IND (0|SS_RGBA_BIT) #define TAG(x) x##_rgba #include "ss_tritmp.h" #define IND (SS_OFFSET_BIT|SS_RGBA_BIT) #define TAG(x) x##_offset_rgba #include "ss_tritmp.h" #define IND (SS_TWOSIDE_BIT|SS_RGBA_BIT) #define TAG(x) x##_twoside_rgba #include "ss_tritmp.h" #define IND (SS_OFFSET_BIT|SS_TWOSIDE_BIT|SS_RGBA_BIT) #define TAG(x) x##_offset_twoside_rgba #include "ss_tritmp.h" #define IND (SS_UNFILLED_BIT|SS_RGBA_BIT) #define TAG(x) x##_unfilled_rgba #include "ss_tritmp.h" #define IND (SS_OFFSET_BIT|SS_UNFILLED_BIT|SS_RGBA_BIT) #define TAG(x) x##_offset_unfilled_rgba #include "ss_tritmp.h" #define IND (SS_TWOSIDE_BIT|SS_UNFILLED_BIT|SS_RGBA_BIT) #define TAG(x) x##_twoside_unfilled_rgba #include "ss_tritmp.h" #define IND (SS_OFFSET_BIT|SS_TWOSIDE_BIT|SS_UNFILLED_BIT|SS_RGBA_BIT) #define TAG(x) x##_offset_twoside_unfilled_rgba #include "ss_tritmp.h" void _swsetup_trifuncs_init( GLcontext *ctx ) { (void) ctx; init(); init_offset(); init_twoside(); init_offset_twoside(); init_unfilled(); init_offset_unfilled(); init_twoside_unfilled(); init_offset_twoside_unfilled(); init_rgba(); init_offset_rgba(); init_twoside_rgba(); init_offset_twoside_rgba(); init_unfilled_rgba(); init_offset_unfilled_rgba(); init_twoside_unfilled_rgba(); init_offset_twoside_unfilled_rgba(); } static void swsetup_points( GLcontext *ctx, GLuint first, GLuint last ) { struct vertex_buffer *VB = &TNL_CONTEXT(ctx)->vb; SWvertex *verts = SWSETUP_CONTEXT(ctx)->verts; GLuint i; if (VB->Elts) { for (i = first; i < last; i++) if (VB->ClipMask[VB->Elts[i]] == 0) _swrast_Point( ctx, &verts[VB->Elts[i]] ); } else { for (i = first; i < last; i++) if (VB->ClipMask[i] == 0) _swrast_Point( ctx, &verts[i] ); } } static void swsetup_line( GLcontext *ctx, GLuint v0, GLuint v1 ) { SWvertex *verts = SWSETUP_CONTEXT(ctx)->verts; _swrast_Line( ctx, &verts[v0], &verts[v1] ); } void _swsetup_choose_trifuncs( GLcontext *ctx ) { TNLcontext *tnl = TNL_CONTEXT(ctx); GLuint ind = 0; if (ctx->Polygon.OffsetPoint || ctx->Polygon.OffsetLine || ctx->Polygon.OffsetFill) ind |= SS_OFFSET_BIT; if (ctx->Light.Enabled && ctx->Light.Model.TwoSide) ind |= SS_TWOSIDE_BIT; /* We piggyback the two-sided stencil front/back determination on the * unfilled triangle path. */ if ((ctx->_TriangleCaps & DD_TRI_UNFILLED) || (ctx->Stencil.Enabled && ctx->Stencil.TestTwoSide)) ind |= SS_UNFILLED_BIT; ctx->_Facing = 0; if (ctx->Visual.rgbMode) ind |= SS_RGBA_BIT; tnl->Driver.Render.Triangle = tri_tab[ind]; tnl->Driver.Render.Quad = quad_tab[ind]; tnl->Driver.Render.Line = swsetup_line; tnl->Driver.Render.Points = swsetup_points; }