| /* |
| * Mesa 3-D graphics library |
| * Version: 7.1 |
| * |
| * Copyright (C) 1999-2007 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> |
| */ |
| |
| #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 tnl_triangle_func tri_tab[SS_MAX_TRIFUNC]; |
| static tnl_quad_func quad_tab[SS_MAX_TRIFUNC]; |
| |
| |
| static void _swsetup_render_line_tri( GLcontext *ctx, |
| GLuint e0, GLuint e1, GLuint e2, |
| GLuint facing ) |
| { |
| 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]; |
| GLfloat s[2][4]; |
| GLfloat i[2]; |
| |
| /* cull testing */ |
| if (ctx->Polygon.CullFlag) { |
| if (facing == 1 && ctx->Polygon.CullFaceMode != GL_FRONT) |
| return; |
| if (facing == 0 && ctx->Polygon.CullFaceMode != GL_BACK) |
| return; |
| } |
| |
| _swrast_SetFacing(ctx, facing); |
| |
| if (ctx->Light.ShadeModel == GL_FLAT) { |
| COPY_CHAN4(c[0], v0->color); |
| COPY_CHAN4(c[1], v1->color); |
| COPY_4V(s[0], v0->attrib[FRAG_ATTRIB_COL1]); |
| COPY_4V(s[1], v1->attrib[FRAG_ATTRIB_COL1]); |
| i[0] = v0->attrib[FRAG_ATTRIB_CI][0]; |
| i[1] = v1->attrib[FRAG_ATTRIB_CI][0]; |
| |
| COPY_CHAN4(v0->color, v2->color); |
| COPY_CHAN4(v1->color, v2->color); |
| COPY_4V(v0->attrib[FRAG_ATTRIB_COL1], v2->attrib[FRAG_ATTRIB_COL1]); |
| COPY_4V(v1->attrib[FRAG_ATTRIB_COL1], v2->attrib[FRAG_ATTRIB_COL1]); |
| v0->attrib[FRAG_ATTRIB_CI][0] = v2->attrib[FRAG_ATTRIB_CI][0]; |
| v1->attrib[FRAG_ATTRIB_CI][0] = v2->attrib[FRAG_ATTRIB_CI][0]; |
| } |
| |
| 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->Light.ShadeModel == GL_FLAT) { |
| COPY_CHAN4(v0->color, c[0]); |
| COPY_CHAN4(v1->color, c[1]); |
| COPY_4V(v0->attrib[FRAG_ATTRIB_COL1], s[0]); |
| COPY_4V(v1->attrib[FRAG_ATTRIB_COL1], s[1]); |
| v0->attrib[FRAG_ATTRIB_CI][0] = i[0]; |
| v1->attrib[FRAG_ATTRIB_CI][0] = i[1]; |
| } |
| } |
| |
| static void _swsetup_render_point_tri( GLcontext *ctx, |
| GLuint e0, GLuint e1, GLuint e2, |
| GLuint facing ) |
| { |
| 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]; |
| GLfloat s[2][4]; |
| GLfloat i[2]; |
| |
| /* cull testing */ |
| if (ctx->Polygon.CullFlag) { |
| if (facing == 1 && ctx->Polygon.CullFaceMode != GL_FRONT) |
| return; |
| if (facing == 0 && ctx->Polygon.CullFaceMode != GL_BACK) |
| return; |
| } |
| |
| _swrast_SetFacing(ctx, facing); |
| |
| if (ctx->Light.ShadeModel == GL_FLAT) { |
| /* save colors/indexes for v0, v1 vertices */ |
| COPY_CHAN4(c[0], v0->color); |
| COPY_CHAN4(c[1], v1->color); |
| COPY_4V(s[0], v0->attrib[FRAG_ATTRIB_COL1]); |
| COPY_4V(s[1], v1->attrib[FRAG_ATTRIB_COL1]); |
| i[0] = v0->attrib[FRAG_ATTRIB_CI][0]; |
| i[1] = v1->attrib[FRAG_ATTRIB_CI][0]; |
| |
| /* copy v2 color/indexes to v0, v1 indexes */ |
| COPY_CHAN4(v0->color, v2->color); |
| COPY_CHAN4(v1->color, v2->color); |
| COPY_4V(v0->attrib[FRAG_ATTRIB_COL1], v2->attrib[FRAG_ATTRIB_COL1]); |
| COPY_4V(v1->attrib[FRAG_ATTRIB_COL1], v2->attrib[FRAG_ATTRIB_COL1]); |
| v0->attrib[FRAG_ATTRIB_CI][0] = v2->attrib[FRAG_ATTRIB_CI][0]; |
| v1->attrib[FRAG_ATTRIB_CI][0] = v2->attrib[FRAG_ATTRIB_CI][0]; |
| } |
| |
| if (ef[e0]) _swrast_Point( ctx, v0 ); |
| if (ef[e1]) _swrast_Point( ctx, v1 ); |
| if (ef[e2]) _swrast_Point( ctx, v2 ); |
| |
| if (ctx->Light.ShadeModel == GL_FLAT) { |
| /* restore v0, v1 colores/indexes */ |
| COPY_CHAN4(v0->color, c[0]); |
| COPY_CHAN4(v1->color, c[1]); |
| COPY_4V(v0->attrib[FRAG_ATTRIB_COL1], s[0]); |
| COPY_4V(v1->attrib[FRAG_ATTRIB_COL1], s[1]); |
| v0->attrib[FRAG_ATTRIB_CI][0] = i[0]; |
| v1->attrib[FRAG_ATTRIB_CI][0] = i[1]; |
| } |
| _swrast_flush(ctx); |
| } |
| |
| #define SS_COLOR(a,b) UNCLAMPED_FLOAT_TO_RGBA_CHAN(a,b) |
| #define SS_SPEC(a,b) UNCLAMPED_FLOAT_TO_RGB_CHAN(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) || |
| (ctx->VertexProgram._Current && ctx->VertexProgram.TwoSideEnabled)) |
| ind |= SS_TWOSIDE_BIT; |
| |
| /* We piggyback the two-sided stencil front/back determination on the |
| * unfilled triangle path. |
| */ |
| if (ctx->Polygon.FrontMode != GL_FILL || |
| ctx->Polygon.BackMode != GL_FILL || |
| (ctx->Stencil.Enabled && ctx->Stencil._TestTwoSide)) |
| ind |= SS_UNFILLED_BIT; |
| |
| 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; |
| } |
