implement logicop

2 files changed, 145 insertions, 2 deletions

diff --git a/src/mesa/pipe/softpipe/sp_quad.c b/src/mesa/pipe/softpipe/sp_quad.c
index 74a21dc54b..429497e9b2 100644
--- a/src/mesa/pipe/softpipe/sp_quad.c
+++ b/src/mesa/pipe/softpipe/sp_quad.c
@@ -1,3 +1,29 @@
+/**************************************************************************
+ * 
+ * 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.
+ * 
+ **************************************************************************/
 
 
 #include "sp_context.h"
@@ -16,7 +42,8 @@ sp_build_quad_pipeline(struct softpipe_context *sp)
       sp->quad.first = sp->quad.colormask;
    }
 
-   if (sp->blend->blend_enable) {
+   if (sp->blend->blend_enable ||
+       sp->blend->logicop_enable) {
       sp->quad.blend->next = sp->quad.first;
       sp->quad.first = sp->quad.blend;
    }
diff --git a/src/mesa/pipe/softpipe/sp_quad_blend.c b/src/mesa/pipe/softpipe/sp_quad_blend.c
index 6c7135e53c..b56e51c104 100755
--- a/src/mesa/pipe/softpipe/sp_quad_blend.c
+++ b/src/mesa/pipe/softpipe/sp_quad_blend.c
@@ -97,6 +97,116 @@ do { \
 
 
 static void
+logicop_quad(struct quad_stage *qs, struct quad_header *quad)
+{
+   struct softpipe_context *softpipe = qs->softpipe;
+   struct softpipe_surface *sps = softpipe_surface(softpipe->cbuf);
+   float dest[4][QUAD_SIZE];
+   ubyte src[4][4], dst[4][4], res[4][4];
+   uint *src4 = (uint *) src;
+   uint *dst4 = (uint *) dst;
+   uint *res4 = (uint *) res;
+   uint j;
+
+   /* get colors from framebuffer */
+   sps->read_quad_f_swz(sps, quad->x0, quad->y0, dest);
+   /* convert to ubyte */
+   for (j = 0; j < 4; j++) { /* loop over R,G,B,A channels */
+      UNCLAMPED_FLOAT_TO_UBYTE(dst[j][0], dest[j][0]); /* P0 */
+      UNCLAMPED_FLOAT_TO_UBYTE(dst[j][1], dest[j][1]); /* P1 */
+      UNCLAMPED_FLOAT_TO_UBYTE(dst[j][2], dest[j][2]); /* P2 */
+      UNCLAMPED_FLOAT_TO_UBYTE(dst[j][3], dest[j][3]); /* P3 */
+
+      UNCLAMPED_FLOAT_TO_UBYTE(src[j][0], quad->outputs.color[j][0]); /* P0 */
+      UNCLAMPED_FLOAT_TO_UBYTE(src[j][1], quad->outputs.color[j][1]); /* P1 */
+      UNCLAMPED_FLOAT_TO_UBYTE(src[j][2], quad->outputs.color[j][2]); /* P2 */
+      UNCLAMPED_FLOAT_TO_UBYTE(src[j][3], quad->outputs.color[j][3]); /* P3 */
+   }
+
+   switch (softpipe->blend->logicop_func) {
+   case PIPE_LOGICOP_CLEAR:
+      for (j = 0; j < 4; j++)
+         res4[j] = 0;
+      break;
+   case PIPE_LOGICOP_NOR:
+      for (j = 0; j < 4; j++)
+         res4[j] = ~(src4[j] | dst4[j]);
+      break;
+   case PIPE_LOGICOP_AND_INVERTED:
+      for (j = 0; j < 4; j++)
+         res4[j] = ~src4[j] & dst4[j];
+      break;
+   case PIPE_LOGICOP_COPY_INVERTED:
+      for (j = 0; j < 4; j++)
+         res4[j] = ~src4[j];
+      break;
+   case PIPE_LOGICOP_AND_REVERSE:
+      for (j = 0; j < 4; j++)
+         res4[j] = src4[j] & ~dst4[j];
+      break;
+   case PIPE_LOGICOP_INVERT:
+      for (j = 0; j < 4; j++)
+         res4[j] = ~dst4[j];
+      break;
+   case PIPE_LOGICOP_XOR:
+      for (j = 0; j < 4; j++)
+         res4[j] = dst4[j] ^ src4[j];
+      break;
+   case PIPE_LOGICOP_NAND:
+      for (j = 0; j < 4; j++)
+         res4[j] = ~(src4[j] & dst4[j]);
+      break;
+   case PIPE_LOGICOP_AND:
+      for (j = 0; j < 4; j++)
+         res4[j] = src4[j] & dst4[j];
+      break;
+   case PIPE_LOGICOP_EQUIV:
+      for (j = 0; j < 4; j++)
+         res4[j] = ~(src4[j] ^ dst4[j]);
+      break;
+   case PIPE_LOGICOP_NOOP:
+      for (j = 0; j < 4; j++)
+         res4[j] = dst4[j];
+      break;
+   case PIPE_LOGICOP_OR_INVERTED:
+      for (j = 0; j < 4; j++)
+         res4[j] = ~src4[j] | dst4[j];
+      break;
+   case PIPE_LOGICOP_COPY:
+      for (j = 0; j < 4; j++)
+         res4[j] = src4[j];
+      break;
+   case PIPE_LOGICOP_OR_REVERSE:
+      for (j = 0; j < 4; j++)
+         res4[j] = src4[j] | ~dst4[j];
+      break;
+   case PIPE_LOGICOP_OR:
+      for (j = 0; j < 4; j++)
+         res4[j] = src4[j] | dst4[j];
+      break;
+   case PIPE_LOGICOP_SET:
+      for (j = 0; j < 4; j++)
+         res4[j] = ~0;
+      break;
+   default:
+      assert(0);
+   }
+
+   for (j = 0; j < 4; j++) {
+      quad->outputs.color[j][0] = UBYTE_TO_FLOAT(res[j][0]);
+      quad->outputs.color[j][1] = UBYTE_TO_FLOAT(res[j][1]);
+      quad->outputs.color[j][2] = UBYTE_TO_FLOAT(res[j][2]);
+      quad->outputs.color[j][3] = UBYTE_TO_FLOAT(res[j][3]);
+   }
+
+   /* pass quad to next stage */
+   qs->next->run(qs->next, quad);
+}
+
+
+
+
+static void
 blend_quad(struct quad_stage *qs, struct quad_header *quad)
 {
    static const float zero[4] = { 0, 0, 0, 0 };
@@ -104,7 +214,12 @@ blend_quad(struct quad_stage *qs, struct quad_header *quad)
    struct softpipe_context *softpipe = qs->softpipe;
    struct softpipe_surface *sps = softpipe_surface(softpipe->cbuf);
    float source[4][QUAD_SIZE], dest[4][QUAD_SIZE];
-   
+
+   if (softpipe->blend->logicop_enable) {
+      logicop_quad(qs, quad);
+      return;
+   }
+
    /* get colors from framebuffer */
    sps->read_quad_f_swz(sps, quad->x0, quad->y0, dest);
 
@@ -371,6 +486,7 @@ blend_quad(struct quad_stage *qs, struct quad_header *quad)
       break;
    case PIPE_BLEND_MAX:
       VEC4_MAX(quad->outputs.color[3], source[3], dest[3]); /* A */
+      break;
    default:
       abort();
    }