svn merge ^/branches/released . --username marha

1 files changed, 317 insertions, 0 deletions

diff --git a/mesalib/src/mesa/swrast_setup/ss_triangle.c b/mesalib/src/mesa/swrast_setup/ss_triangle.c
new file mode 100644
index 000000000..e15b1348d
--- /dev/null
+++ b/mesalib/src/mesa/swrast_setup/ss_triangle.c
@@ -0,0 +1,317 @@
+/*
+ * 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 "main/glheader.h"
+#include "main/colormac.h"
+#include "main/macros.h"
+#include "main/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];
+
+
+/*
+ * Render a triangle respecting edge flags.
+ */
+typedef void (* swsetup_edge_render_prim_tri)(GLcontext *ctx,
+                                              const GLubyte *ef,
+                                              GLuint e0,
+                                              GLuint e1,
+                                              GLuint e2,
+                                              const SWvertex *v0,
+                                              const SWvertex *v1,
+                                              const SWvertex *v2);
+
+/*
+ * Render a triangle using lines and respecting edge flags.
+ */
+static void
+_swsetup_edge_render_line_tri(GLcontext *ctx,
+                              const GLubyte *ef,
+                              GLuint e0,
+                              GLuint e1,
+                              GLuint e2,
+                              const SWvertex *v0,
+                              const SWvertex *v1,
+                              const SWvertex *v2)
+{
+   SScontext *swsetup = SWSETUP_CONTEXT(ctx);
+
+   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 );
+   }
+}
+
+/*
+ * Render a triangle using points and respecting edge flags.
+ */
+static void
+_swsetup_edge_render_point_tri(GLcontext *ctx,
+                               const GLubyte *ef,
+                               GLuint e0,
+                               GLuint e1,
+                               GLuint e2,
+                               const SWvertex *v0,
+                               const SWvertex *v1,
+                               const SWvertex *v2)
+{
+   if (ef[e0]) _swrast_Point( ctx, v0 );
+   if (ef[e1]) _swrast_Point( ctx, v1 );
+   if (ef[e2]) _swrast_Point( ctx, v2 );
+
+   _swrast_flush(ctx);
+}
+
+/*
+ * Render a triangle respecting cull and shade model.
+ */
+static void _swsetup_render_tri(GLcontext *ctx,
+                                GLuint e0,
+                                GLuint e1,
+                                GLuint e2,
+                                GLuint facing,
+                                swsetup_edge_render_prim_tri render)
+{
+   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];
+
+   /* 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) {
+      GLchan c[2][4];
+      GLfloat s[2][4];
+      GLfloat i[2];
+
+      /* 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];
+
+      render(ctx, ef, e0, e1, e2, v0, v1, v2);
+
+      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];
+   }
+   else {
+      render(ctx, ef, e0, e1, e2, v0, v1, v2);
+   }
+}
+
+#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;
+}