1 files changed, 286 insertions, 0 deletions
diff --git a/src/mesa/state_tracker/st_atom_rasterizer.c b/src/mesa/state_tracker/st_atom_rasterizer.c
new file mode 100644
index 0000000000..5eef4ebe92
--- /dev/null
+++ b/src/mesa/state_tracker/st_atom_rasterizer.c
@@ -0,0 +1,286 @@
+/**************************************************************************
+ * 
+ * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
+ * 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, sub license, 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 (including the
+ * next paragraph) 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 NON-INFRINGEMENT.
+ * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS 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/macros.h"
+#include "st_context.h"
+#include "st_atom.h"
+#include "pipe/p_context.h"
+#include "pipe/p_defines.h"
+#include "cso_cache/cso_context.h"
+
+
+static GLuint translate_fill( GLenum mode )
+{
+   switch (mode) {
+   case GL_POINT:
+      return PIPE_POLYGON_MODE_POINT;
+   case GL_LINE:
+      return PIPE_POLYGON_MODE_LINE;
+   case GL_FILL:
+      return PIPE_POLYGON_MODE_FILL;
+   default:
+      assert(0);
+      return 0;
+   }
+}
+
+static GLboolean get_offset_flag( GLuint fill_mode, 
+				  const struct gl_polygon_attrib *p )
+{
+   switch (fill_mode) {
+   case PIPE_POLYGON_MODE_POINT:
+      return p->OffsetPoint;
+   case PIPE_POLYGON_MODE_LINE:
+      return p->OffsetLine;
+   case PIPE_POLYGON_MODE_FILL:
+      return p->OffsetFill;
+   default:
+      assert(0);
+      return 0;
+   }
+}
+
+
+static void update_raster_state( struct st_context *st )
+{
+   GLcontext *ctx = st->ctx;
+   struct pipe_rasterizer_state *raster = &st->state.rasterizer;
+   const struct gl_vertex_program *vertProg = ctx->VertexProgram._Current;
+   uint i;
+
+   memset(raster, 0, sizeof(*raster));
+
+   raster->origin_lower_left = 1; /* Always true for OpenGL */
+   
+   /* _NEW_POLYGON, _NEW_BUFFERS
+    */
+   {
+      if (ctx->Polygon.FrontFace == GL_CCW)
+         raster->front_winding = PIPE_WINDING_CCW;
+      else
+         raster->front_winding = PIPE_WINDING_CW;
+
+      /* XXX
+       * I think the intention here is that user-created framebuffer objects
+       * use Y=0=TOP layout instead of OpenGL's normal Y=0=bottom layout.
+       * Flipping Y changes CW to CCW and vice-versa.
+       * But this is an implementation/driver-specific artifact - remove...
+       */
+      if (ctx->DrawBuffer && ctx->DrawBuffer->Name != 0)
+         raster->front_winding ^= PIPE_WINDING_BOTH;
+   }
+
+   /* _NEW_LIGHT
+    */
+   if (ctx->Light.ShadeModel == GL_FLAT)
+      raster->flatshade = 1;
+
+   /* _NEW_LIGHT | _NEW_PROGRAM
+    *
+    * Back-face colors can come from traditional lighting (when
+    * GL_LIGHT_MODEL_TWO_SIDE is set) or from vertex programs (when
+    * GL_VERTEX_PROGRAM_TWO_SIDE is set).  Note the logic here.
+    */
+   if (ctx->VertexProgram._Current) {
+      if (ctx->VertexProgram._Enabled) {
+         /* user-defined program */
+         raster->light_twoside = ctx->VertexProgram.TwoSideEnabled;
+      }
+      else {
+         /* TNL-generated program */
+         raster->light_twoside = ctx->Light.Enabled && ctx->Light.Model.TwoSide;
+      }
+   }
+   else if (ctx->Light.Enabled && ctx->Light.Model.TwoSide) {
+      raster->light_twoside = 1;
+   }
+
+   /* _NEW_POLYGON
+    */
+   if (ctx->Polygon.CullFlag) {
+      if (ctx->Polygon.CullFaceMode == GL_FRONT_AND_BACK) {
+	 raster->cull_mode = PIPE_WINDING_BOTH;
+      }
+      else if (ctx->Polygon.CullFaceMode == GL_FRONT) {
+	 raster->cull_mode = raster->front_winding;
+      }
+      else {
+	 raster->cull_mode = raster->front_winding ^ PIPE_WINDING_BOTH;
+      }
+   }
+
+   /* _NEW_POLYGON
+    */
+   {
+      GLuint fill_front = translate_fill( ctx->Polygon.FrontMode );
+      GLuint fill_back = translate_fill( ctx->Polygon.BackMode );
+      
+      if (raster->front_winding == PIPE_WINDING_CW) {
+	 raster->fill_cw = fill_front;
+	 raster->fill_ccw = fill_back;
+      }
+      else {
+	 raster->fill_cw = fill_back;
+	 raster->fill_ccw = fill_front;
+      }
+
+      /* Simplify when culling is active:
+       */
+      if (raster->cull_mode & PIPE_WINDING_CW) {
+	 raster->fill_cw = raster->fill_ccw;
+      }
+      
+      if (raster->cull_mode & PIPE_WINDING_CCW) {
+	 raster->fill_ccw = raster->fill_cw;
+      }
+   }
+
+   /* _NEW_POLYGON 
+    */
+   if (ctx->Polygon.OffsetUnits != 0.0 ||
+       ctx->Polygon.OffsetFactor != 0.0) {
+      raster->offset_cw = get_offset_flag( raster->fill_cw, &ctx->Polygon );
+      raster->offset_ccw = get_offset_flag( raster->fill_ccw, &ctx->Polygon );
+      raster->offset_units = ctx->Polygon.OffsetUnits;
+      raster->offset_scale = ctx->Polygon.OffsetFactor;
+   }
+
+   if (ctx->Polygon.SmoothFlag)
+      raster->poly_smooth = 1;
+
+   if (ctx->Polygon.StippleFlag)
+      raster->poly_stipple_enable = 1;
+
+
+   /* _NEW_BUFFERS, _NEW_POLYGON
+    */
+   if (raster->fill_cw != PIPE_POLYGON_MODE_FILL ||
+       raster->fill_ccw != PIPE_POLYGON_MODE_FILL)
+   {
+      GLfloat mrd = (ctx->DrawBuffer ? 
+		     ctx->DrawBuffer->_MRD : 
+		     1.0f);
+
+      raster->offset_units = ctx->Polygon.OffsetFactor * mrd;
+      raster->offset_scale = (ctx->Polygon.OffsetUnits * mrd *
+			    st->polygon_offset_scale);
+   }
+      
+   /* _NEW_POINT
+    */
+   raster->point_size = ctx->Point.Size;
+
+   raster->point_size_min = 0;    /* temporary, will go away */
+   raster->point_size_max = 1000; /* temporary, will go away */
+
+   raster->point_smooth = ctx->Point.SmoothFlag;
+   raster->point_sprite = ctx->Point.PointSprite;
+   for (i = 0; i < MAX_TEXTURE_COORD_UNITS; i++) {
+      if (ctx->Point.CoordReplace[i]) {
+         if (ctx->Point.SpriteOrigin == GL_UPPER_LEFT)
+            raster->sprite_coord_mode[i] = PIPE_SPRITE_COORD_UPPER_LEFT;
+         else 
+            raster->sprite_coord_mode[i] = PIPE_SPRITE_COORD_LOWER_LEFT;
+      }
+      else {
+         raster->sprite_coord_mode[i] = PIPE_SPRITE_COORD_NONE;
+      }
+   }
+
+   /* ST_NEW_VERTEX_PROGRAM
+    */
+   if (vertProg) {
+      if (vertProg->Base.Id == 0) {
+         if (vertProg->Base.OutputsWritten & (1 << VERT_RESULT_PSIZ)) {
+            /* generated program which emits point size */
+            raster->point_size_per_vertex = TRUE;
+         }
+      }
+      else if (ctx->VertexProgram.PointSizeEnabled) {
+         /* user-defined program and GL_VERTEX_PROGRAM_POINT_SIZE set */
+         raster->point_size_per_vertex = ctx->VertexProgram.PointSizeEnabled;
+      }
+   }
+   if (!raster->point_size_per_vertex) {
+      /* clamp size now */
+      raster->point_size = CLAMP(ctx->Point.Size,
+                                 ctx->Point.MinSize,
+                                 ctx->Point.MaxSize);
+   }
+
+   /* _NEW_LINE
+    */
+   raster->line_smooth = ctx->Line.SmoothFlag;
+   if (ctx->Line.SmoothFlag) {
+      raster->line_width = CLAMP(ctx->Line.Width,
+                                ctx->Const.MinLineWidthAA,
+                                ctx->Const.MaxLineWidthAA);
+   }
+   else {
+      raster->line_width = CLAMP(ctx->Line.Width,
+                                ctx->Const.MinLineWidth,
+                                ctx->Const.MaxLineWidth);
+   }
+
+   raster->line_stipple_enable = ctx->Line.StippleFlag;
+   raster->line_stipple_pattern = ctx->Line.StipplePattern;
+   /* GL stipple factor is in [1,256], remap to [0, 255] here */
+   raster->line_stipple_factor = ctx->Line.StippleFactor - 1;
+
+   /* _NEW_MULTISAMPLE */
+   if (ctx->Multisample._Enabled || st->force_msaa)
+      raster->multisample = 1;
+
+   /* _NEW_SCISSOR */
+   if (ctx->Scissor.Enabled)
+      raster->scissor = 1;
+
+   raster->gl_rasterization_rules = 1;
+
+   cso_set_rasterizer(st->cso_context, raster);
+}
+
+const struct st_tracked_state st_update_rasterizer = {
+   "st_update_rasterizer",    /* name */
+   {
+      (_NEW_BUFFERS |
+       _NEW_LIGHT |
+       _NEW_LINE |
+       _NEW_MULTISAMPLE |
+       _NEW_POINT |
+       _NEW_POLYGON |
+       _NEW_PROGRAM |
+       _NEW_SCISSOR),      /* mesa state dependencies*/
+      ST_NEW_VERTEX_PROGRAM,  /* state tracker dependencies */
+   },
+   update_raster_state     /* update function */
+};