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

1 files changed, 317 insertions, 0 deletions

diff --git a/mesalib/src/mesa/swrast_setup/ss_context.c b/mesalib/src/mesa/swrast_setup/ss_context.c
new file mode 100644
index 000000000..61172f997
--- /dev/null
+++ b/mesalib/src/mesa/swrast_setup/ss_context.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/imports.h"
+#include "main/colormac.h"
+#include "tnl/tnl.h"
+#include "tnl/t_context.h"
+#include "tnl/t_pipeline.h"
+#include "tnl/t_vertex.h"
+#include "swrast_setup.h"
+#include "ss_context.h"
+#include "ss_triangle.h"
+
+
+/* Need to check lighting state and vertex program state to know
+ * if two-sided lighting is in effect.
+ */
+#define _SWSETUP_NEW_RENDERINDEX (_NEW_POLYGON|_NEW_LIGHT|_NEW_PROGRAM)
+
+
+#define VARYING_EMIT_STYLE  EMIT_4F
+
+
+GLboolean
+_swsetup_CreateContext( GLcontext *ctx )
+{
+   SScontext *swsetup = (SScontext *)CALLOC(sizeof(SScontext));
+
+   if (!swsetup)
+      return GL_FALSE;
+
+   ctx->swsetup_context = swsetup;
+
+   swsetup->NewState = ~0;
+   _swsetup_trifuncs_init( ctx );
+
+   _tnl_init_vertices( ctx, ctx->Const.MaxArrayLockSize + 12, 
+		       sizeof(SWvertex) );
+
+
+   return GL_TRUE;
+}
+
+void
+_swsetup_DestroyContext( GLcontext *ctx )
+{
+   SScontext *swsetup = SWSETUP_CONTEXT(ctx);
+
+   if (swsetup) {
+      FREE(swsetup);
+      ctx->swsetup_context = 0;
+   }
+
+   _tnl_free_vertices( ctx );
+}
+
+static void
+_swsetup_RenderPrimitive( GLcontext *ctx, GLenum mode )
+{
+   SWSETUP_CONTEXT(ctx)->render_prim = mode;
+   _swrast_render_primitive( ctx, mode );
+}
+
+
+/**
+ * Helper macros for setup_vertex_format()
+ */
+#define SWZ ((SWvertex *)0)
+#define SWOffset(MEMBER) (((char *)&(SWZ->MEMBER)) - ((char *)SWZ))
+
+#define EMIT_ATTR( ATTR, STYLE, MEMBER )	\
+do {						\
+   map[e].attrib = (ATTR);			\
+   map[e].format = (STYLE);			\
+   map[e].offset = SWOffset(MEMBER);	       	\
+   e++;						\
+} while (0)
+
+
+/**
+ * Tell the tnl module how to build SWvertex objects for swrast.
+ * We'll build the map[] array with that info and pass it to
+ * _tnl_install_attrs().
+ */
+static void
+setup_vertex_format(GLcontext *ctx)
+{
+   TNLcontext *tnl = TNL_CONTEXT(ctx);
+   SScontext *swsetup = SWSETUP_CONTEXT(ctx);
+   GLboolean intColors = !ctx->FragmentProgram._Current
+                      && !ctx->ATIFragmentShader._Enabled
+                      && ctx->RenderMode == GL_RENDER
+                      && CHAN_TYPE == GL_UNSIGNED_BYTE;
+
+   if (intColors != swsetup->intColors ||
+       !RENDERINPUTS_EQUAL(tnl->render_inputs_bitset,
+                           swsetup->last_index_bitset)) {
+      DECLARE_RENDERINPUTS(index_bitset);
+      struct tnl_attr_map map[_TNL_ATTRIB_MAX];
+      int i, e = 0;
+
+      swsetup->intColors = intColors;
+
+      RENDERINPUTS_COPY( index_bitset, tnl->render_inputs_bitset );
+
+      EMIT_ATTR( _TNL_ATTRIB_POS, EMIT_4F_VIEWPORT, attrib[FRAG_ATTRIB_WPOS] );
+
+      if (RENDERINPUTS_TEST( index_bitset, _TNL_ATTRIB_COLOR0 )) {
+         if (swsetup->intColors)
+            EMIT_ATTR( _TNL_ATTRIB_COLOR0, EMIT_4CHAN_4F_RGBA, color );
+         else
+            EMIT_ATTR( _TNL_ATTRIB_COLOR0, EMIT_4F, attrib[FRAG_ATTRIB_COL0]);
+      }
+
+      if (RENDERINPUTS_TEST( index_bitset, _TNL_ATTRIB_COLOR1 )) {
+         EMIT_ATTR( _TNL_ATTRIB_COLOR1, EMIT_4F, attrib[FRAG_ATTRIB_COL1]);
+      }
+
+      if (RENDERINPUTS_TEST( index_bitset, _TNL_ATTRIB_COLOR_INDEX )) {
+         EMIT_ATTR( _TNL_ATTRIB_COLOR_INDEX, EMIT_1F,
+                    attrib[FRAG_ATTRIB_CI][0] );
+      }
+
+      if (RENDERINPUTS_TEST( index_bitset, _TNL_ATTRIB_FOG )) {
+         const GLint emit = ctx->FragmentProgram._Current ? EMIT_4F : EMIT_1F;
+         EMIT_ATTR( _TNL_ATTRIB_FOG, emit, attrib[FRAG_ATTRIB_FOGC]);
+      }
+
+      if (RENDERINPUTS_TEST_RANGE(index_bitset, _TNL_FIRST_TEX, _TNL_LAST_TEX))
+      {
+         for (i = 0; i < MAX_TEXTURE_COORD_UNITS; i++) {
+            if (RENDERINPUTS_TEST( index_bitset, _TNL_ATTRIB_TEX(i) )) {
+               EMIT_ATTR( _TNL_ATTRIB_TEX(i), EMIT_4F,
+                          attrib[FRAG_ATTRIB_TEX0 + i] );
+            }
+         }
+      }
+
+      /* shader varying vars */
+      if (RENDERINPUTS_TEST_RANGE( index_bitset,
+                                   _TNL_FIRST_GENERIC, _TNL_LAST_GENERIC )) {
+         for (i = 0; i < ctx->Const.MaxVarying; i++) {
+            if (RENDERINPUTS_TEST( index_bitset, _TNL_ATTRIB_GENERIC(i) )) {
+               EMIT_ATTR( _TNL_ATTRIB_GENERIC(i), VARYING_EMIT_STYLE,
+                          attrib[FRAG_ATTRIB_VAR0 + i] );
+            }
+         }
+      }
+
+      if (RENDERINPUTS_TEST( index_bitset, _TNL_ATTRIB_POINTSIZE ))
+         EMIT_ATTR( _TNL_ATTRIB_POINTSIZE, EMIT_1F, pointSize );
+
+      _tnl_install_attrs( ctx, map, e,
+                          ctx->Viewport._WindowMap.m,
+                          sizeof(SWvertex) );
+
+      RENDERINPUTS_COPY( swsetup->last_index_bitset, index_bitset );
+   }
+}
+
+
+/**
+ * Prepare to render a vertex buffer.
+ * Called via tnl->Driver.Render.Start.
+ */
+static void
+_swsetup_RenderStart( GLcontext *ctx )
+{
+   SScontext *swsetup = SWSETUP_CONTEXT(ctx);
+   TNLcontext *tnl = TNL_CONTEXT(ctx);
+   struct vertex_buffer *VB = &tnl->vb;
+
+   if (swsetup->NewState & _SWSETUP_NEW_RENDERINDEX) {
+      _swsetup_choose_trifuncs(ctx);
+   }
+
+   if (swsetup->NewState & _NEW_PROGRAM) {
+      RENDERINPUTS_ZERO( swsetup->last_index_bitset );
+   }
+
+   swsetup->NewState = 0;
+
+   /* This will change if drawing unfilled tris */
+   _swrast_SetFacing(ctx, 0);
+
+   _swrast_render_start(ctx);
+
+   /* Important */
+   VB->AttribPtr[VERT_ATTRIB_POS] = VB->NdcPtr;
+
+   setup_vertex_format(ctx);
+}
+
+
+/*
+ * We patch this function into tnl->Driver.Render.Finish.
+ * It's called when we finish rendering a vertex buffer.
+ */
+static void
+_swsetup_RenderFinish( GLcontext *ctx )
+{
+   _swrast_render_finish( ctx );
+}
+
+void
+_swsetup_InvalidateState( GLcontext *ctx, GLuint new_state )
+{
+   SScontext *swsetup = SWSETUP_CONTEXT(ctx);
+   swsetup->NewState |= new_state;
+   _tnl_invalidate_vertex_state( ctx, new_state );
+}
+
+
+void
+_swsetup_Wakeup( GLcontext *ctx )
+{
+   TNLcontext *tnl = TNL_CONTEXT(ctx);
+   SScontext *swsetup = SWSETUP_CONTEXT(ctx);
+
+   tnl->Driver.Render.Start = _swsetup_RenderStart;
+   tnl->Driver.Render.Finish = _swsetup_RenderFinish;
+   tnl->Driver.Render.PrimitiveNotify = _swsetup_RenderPrimitive;
+   tnl->Driver.Render.Interp = _tnl_interp;
+   tnl->Driver.Render.CopyPV = _tnl_copy_pv;
+   tnl->Driver.Render.ClippedPolygon = _tnl_RenderClippedPolygon; /* new */
+   tnl->Driver.Render.ClippedLine = _tnl_RenderClippedLine; /* new */
+   /* points */
+   /* line */
+   /* triangle */
+   /* quad */
+   tnl->Driver.Render.PrimTabVerts = _tnl_render_tab_verts;
+   tnl->Driver.Render.PrimTabElts = _tnl_render_tab_elts;
+   tnl->Driver.Render.ResetLineStipple = _swrast_ResetLineStipple;
+   tnl->Driver.Render.BuildVertices = _tnl_build_vertices;
+   tnl->Driver.Render.Multipass = 0;
+
+   _tnl_invalidate_vertices( ctx, ~0 );
+   _tnl_need_projected_coords( ctx, GL_TRUE );
+   _swsetup_InvalidateState( ctx, ~0 );
+
+   swsetup->verts = (SWvertex *)tnl->clipspace.vertex_buf;
+   RENDERINPUTS_ZERO( swsetup->last_index_bitset );
+}
+
+
+/**
+ * Populate a swrast SWvertex from an attrib-style vertex.
+ */
+void 
+_swsetup_Translate( GLcontext *ctx, const void *vertex, SWvertex *dest )
+{
+   const GLfloat *m = ctx->Viewport._WindowMap.m;
+   GLfloat tmp[4];
+   GLuint i;
+
+   _tnl_get_attr( ctx, vertex, _TNL_ATTRIB_POS, tmp );
+
+   dest->attrib[FRAG_ATTRIB_WPOS][0] = m[0]  * tmp[0] + m[12];
+   dest->attrib[FRAG_ATTRIB_WPOS][1] = m[5]  * tmp[1] + m[13];
+   dest->attrib[FRAG_ATTRIB_WPOS][2] = m[10] * tmp[2] + m[14];
+   dest->attrib[FRAG_ATTRIB_WPOS][3] =         tmp[3];
+
+   /** XXX try to limit these loops someday */
+   for (i = 0 ; i < ctx->Const.MaxTextureCoordUnits ; i++)
+      _tnl_get_attr( ctx, vertex, _TNL_ATTRIB_TEX0 + i,
+                     dest->attrib[FRAG_ATTRIB_TEX0 + i] );
+
+   for (i = 0 ; i < ctx->Const.MaxVarying ; i++)
+      _tnl_get_attr( ctx, vertex, _TNL_ATTRIB_GENERIC0 + i,
+                     dest->attrib[FRAG_ATTRIB_VAR0 + i] );
+
+   if (ctx->Visual.rgbMode) {
+      _tnl_get_attr( ctx, vertex, _TNL_ATTRIB_COLOR0,
+                     dest->attrib[FRAG_ATTRIB_COL0] );
+      UNCLAMPED_FLOAT_TO_RGBA_CHAN( dest->color, tmp );
+
+      _tnl_get_attr( ctx, vertex, _TNL_ATTRIB_COLOR1,
+                     dest->attrib[FRAG_ATTRIB_COL1]);
+   }
+   else {
+      _tnl_get_attr( ctx, vertex, _TNL_ATTRIB_COLOR_INDEX, tmp );
+      dest->attrib[FRAG_ATTRIB_CI][0] = tmp[0];
+   }
+
+   _tnl_get_attr( ctx, vertex, _TNL_ATTRIB_FOG, tmp );
+   dest->attrib[FRAG_ATTRIB_FOGC][0] = tmp[0];
+
+   /* XXX See _tnl_get_attr about pointsize ... */
+   _tnl_get_attr( ctx, vertex, _TNL_ATTRIB_POINTSIZE, tmp );
+   dest->pointSize = tmp[0];
+}
+