Added colormask, dither, multisample state. Implement colormasking stage.

progs/samples/prim.c

@@ -466,7 +466,7 @@ static void Draw(void)
     } else {
 	glPolygonMode(GL_FRONT_AND_BACK, GL_LINE);
     }
-
+#if 01
     Viewport(0, 0); Point();
     Viewport(0, 1); Lines();
     Viewport(0, 2); LineStrip();
@@ -479,10 +479,12 @@ static void Draw(void)
     Viewport(1, 3); TriangleStrip();
 
     Viewport(2, 0); Rect();
+#endif
     Viewport(2, 1); PolygonFunc();
+#if 01
     Viewport(2, 2); Quads();
     Viewport(2, 3); QuadStrip();
-
+#endif
     glFlush();
 
     if (doubleBuffer) {

src/mesa/pipe/p_defines.h

@@ -71,6 +71,11 @@
 #define PIPE_LOGICOP_OR               14
 #define PIPE_LOGICOP_SET              15  
 
+#define PIPE_MASK_R  0x1
+#define PIPE_MASK_G  0x2
+#define PIPE_MASK_B  0x4
+#define PIPE_MASK_A  0x8
+
 /**
  * Inequality functions.  Used for depth test, stencil compare, alpha
  * test, shadow compare, etc.

src/mesa/pipe/p_state.h

@@ -89,6 +89,8 @@ struct pipe_setup_state
 
    GLuint point_smooth:1;
 
+   GLuint multisample:1;         /* XXX maybe more ms state in future */
+
    GLubyte line_stipple_factor;  /**< [1..256] actually */
    GLushort line_stipple_pattern;
    GLfloat line_width;
@@ -156,6 +158,9 @@ struct pipe_blend_state {
 
    GLuint logicop_enable:1;
    GLuint logicop_func:4;      /**< PIPE_LOGICOP_x */
+
+   GLuint colormask:4;         /**< bitmask of PIPE_MASK_R/G/B/A */
+   GLuint dither:1;
 };
 
 struct pipe_blend_color {

src/mesa/pipe/softpipe/sp_context.c

@@ -86,9 +86,10 @@ struct pipe_context *softpipe_create( void )
    softpipe->quad.polygon_stipple = sp_quad_polygon_stipple_stage(softpipe);
    softpipe->quad.shade = sp_quad_shade_stage(softpipe);
    softpipe->quad.alpha_test = sp_quad_alpha_test_stage(softpipe);
-   softpipe->quad.blend = sp_quad_blend_stage(softpipe);
    softpipe->quad.depth_test = sp_quad_depth_test_stage(softpipe);
    softpipe->quad.stencil_test = sp_quad_stencil_test_stage(softpipe);
+   softpipe->quad.blend = sp_quad_blend_stage(softpipe);
+   softpipe->quad.colormask = sp_quad_colormask_stage(softpipe);
    softpipe->quad.output = sp_quad_output_stage(softpipe);
 
    /*

src/mesa/pipe/softpipe/sp_context.h

@@ -123,6 +123,7 @@ struct softpipe_context {
       struct quad_stage *stencil_test;
       struct quad_stage *depth_test;
       struct quad_stage *blend;
+      struct quad_stage *colormask;
       struct quad_stage *output;
 
       struct quad_stage *first; /**< points to one of the above stages */

src/mesa/pipe/softpipe/sp_quad.c

@@ -11,6 +11,11 @@ sp_build_quad_pipeline(struct softpipe_context *sp)
 
    sp->quad.first = sp->quad.output;
 
+   if (sp->blend.colormask != 0xf) {
+      sp->quad.colormask->next = sp->quad.first;
+      sp->quad.first = sp->quad.colormask;
+   }
+
    if (sp->blend.blend_enable) {
       sp->quad.blend->next = sp->quad.first;
       sp->quad.first = sp->quad.blend;

src/mesa/pipe/softpipe/sp_quad.h

@@ -52,6 +52,7 @@ struct quad_stage *sp_quad_alpha_test_stage( struct softpipe_context *softpipe )
 struct quad_stage *sp_quad_stencil_test_stage( struct softpipe_context *softpipe );
 struct quad_stage *sp_quad_depth_test_stage( struct softpipe_context *softpipe );
 struct quad_stage *sp_quad_blend_stage( struct softpipe_context *softpipe );
+struct quad_stage *sp_quad_colormask_stage( struct softpipe_context *softpipe );
 struct quad_stage *sp_quad_output_stage( struct softpipe_context *softpipe );
 
 void sp_build_quad_pipeline(struct softpipe_context *sp);

src/mesa/pipe/softpipe/sp_quad_colormask.c

@@ -0,0 +1,88 @@
+/**************************************************************************
+ * 
+ * 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.
+ * 
+ **************************************************************************/
+
+/**
+ * \brief  quad colormask stage
+ * \author Brian Paul
+ */
+
+#include "main/glheader.h"
+#include "main/imports.h"
+#include "main/macros.h"
+#include "pipe/p_defines.h"
+#include "sp_context.h"
+#include "sp_headers.h"
+#include "sp_surface.h"
+#include "sp_quad.h"
+
+
+
+static void
+colormask_quad(struct quad_stage *qs, struct quad_header *quad)
+{
+   struct softpipe_context *softpipe = qs->softpipe;
+   GLfloat dest[4][QUAD_SIZE];
+
+   /* XXX buffer looping */
+
+   struct softpipe_surface *sps
+      = softpipe_surface(softpipe->framebuffer.cbufs[0]);
+   
+   sps->read_quad_f_swz(sps, quad->x0, quad->y0, dest);
+
+   /* R */
+   if (!(softpipe->blend.colormask & PIPE_MASK_R))
+       COPY_4FV(quad->outputs.color[0], dest[0]);
+
+   /* G */
+   if (!(softpipe->blend.colormask & PIPE_MASK_G))
+       COPY_4FV(quad->outputs.color[1], dest[1]);
+
+   /* B */
+   if (!(softpipe->blend.colormask & PIPE_MASK_B))
+       COPY_4FV(quad->outputs.color[2], dest[2]);
+
+   /* A */
+   if (!(softpipe->blend.colormask & PIPE_MASK_A))
+       COPY_4FV(quad->outputs.color[3], dest[3]);
+
+   /* pass quad to next stage */
+   qs->next->run(qs->next, quad);
+}
+
+
+
+
+struct quad_stage *sp_quad_colormask_stage( struct softpipe_context *softpipe )
+{
+   struct quad_stage *stage = CALLOC_STRUCT(quad_stage);
+
+   stage->softpipe = softpipe;
+   stage->run = colormask_quad;
+
+   return stage;
+}

src/mesa/sources

@@ -160,6 +160,7 @@ SOFTPIPE_SOURCES = \
 	pipe/softpipe/sp_quad.c \
 	pipe/softpipe/sp_quad_alpha_test.c \
 	pipe/softpipe/sp_quad_blend.c \
+	pipe/softpipe/sp_quad_colormask.c \
 	pipe/softpipe/sp_quad_depth_test.c \
 	pipe/softpipe/sp_quad_fs.c \
 	pipe/softpipe/sp_quad_output.c \

src/mesa/state_tracker/st_atom_blend.c

@@ -196,6 +196,19 @@ update_blend( struct st_context *st )
       /* no blending / logicop */
    }
 
+   /* Colormask - maybe reverse these bits? */
+   if (st->ctx->Color.ColorMask[0])
+      blend.colormask |= PIPE_MASK_R;
+   if (st->ctx->Color.ColorMask[1])
+      blend.colormask |= PIPE_MASK_G;
+   if (st->ctx->Color.ColorMask[2])
+      blend.colormask |= PIPE_MASK_B;
+   if (st->ctx->Color.ColorMask[3])
+      blend.colormask |= PIPE_MASK_A;
+
+   if (st->ctx->Color.DitherFlag)
+      blend.dither = 1;
+
    if (memcmp(&blend, &st->state.blend, sizeof(blend)) != 0) {
       /* state has changed */
       st->state.blend = blend;  /* struct copy */

src/mesa/state_tracker/st_atom_setup.c

@@ -186,6 +186,9 @@ static void update_setup_state( struct st_context *st )
    /* GL stipple factor is in [1,256], remap to [0, 255] here */
    setup.line_stipple_factor = ctx->Line.StippleFactor - 1;
 
+   /* _NEW_MULTISAMPLE */
+   if (ctx->Multisample.Enabled)
+      setup.multisample = 1;
 
    if (memcmp(&setup, &st->state.setup, sizeof(setup)) != 0) {
       st->state.setup = setup;
@@ -196,7 +199,7 @@ static void update_setup_state( struct st_context *st )
 const struct st_tracked_state st_update_setup = {
    .dirty = {
       .mesa = (_NEW_LIGHT | _NEW_POLYGON | _NEW_LINE |
-               _NEW_POINT | _NEW_BUFFERS),
+               _NEW_POINT | _NEW_BUFFERS | _NEW_MULTISAMPLE),
       .st  = 0,
    },
    .update = update_setup_state