src/mesa/drivers/dri/r600/r700_clear.c

   1 /*
   2  * Copyright (C) 2008-2009  Advanced Micro Devices, Inc.
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8  * and/or sell copies of the Software, and to permit persons to whom the
   9  * Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice shall be included
  12  * in all copies or substantial portions of the Software.
  13  *
  14  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  15  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  17  * THE COPYRIGHT HOLDER(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
  18  * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  19  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  20  */
  21
  22 /*
  23  * Authors:
  24  *   Richard Li <RichardZ.Li@amd.com>, <richardradeon@gmail.com>
  25  *   CooperYuan <cooper.yuan@amd.com>, <cooperyuan@gmail.com>
  26  */
  27
  28 #include "main/glheader.h"
  29 #include "main/context.h"
  30 #include "main/macros.h"
  31 #include "main/imports.h"
  32 #include "main/mtypes.h"
  33 #include "main/enums.h"
  34
  35 #include "radeon_lock.h"
  36 #include "r600_context.h"
  37
  38 #include "r700_shaderinst.h"
  39 #include "r600_emit.h"
  40
  41 static GLboolean r700ClearFast(context_t *context, GLbitfield mask)
  42 {
  43     /* TODO, fast clear need implementation */
  44     return GL_FALSE;
  45 }
  46
  47 static void r700UserClear(GLcontext *ctx, GLuint mask)
  48 {
  49         radeon_clear_tris(ctx, mask);
  50 }
  51
  52 #define R600_NEWPRIM( rmesa )                   \
  53   do {                                          \
  54   if ( rmesa->radeon.dma.flush )                        \
  55     rmesa->radeon.dma.flush( rmesa->radeon.glCtx );     \
  56   } while (0)
  57
  58 void r700Clear(GLcontext * ctx, GLbitfield mask)
  59 {
  60     context_t *context = R700_CONTEXT(ctx);
  61     __DRIdrawablePrivate *dPriv = radeon_get_drawable(&context->radeon);
  62     const GLuint colorMask = *((GLuint *) & ctx->Color.ColorMask);
  63     GLbitfield swrast_mask = 0, tri_mask = 0;
  64     int i;
  65     struct gl_framebuffer *fb = ctx->DrawBuffer;
  66
  67     if( GL_TRUE == r700ClearFast(context, mask) )
  68     {
  69         return;
  70     }
  71
  72         if (!context->radeon.radeonScreen->driScreen->dri2.enabled) {
  73                 LOCK_HARDWARE(&context->radeon);
  74                 UNLOCK_HARDWARE(&context->radeon);
  75                 if (dPriv->numClipRects == 0)
  76                         return;
  77         }
  78
  79         R600_NEWPRIM(context);
  80
  81         if (colorMask == ~0)
  82           tri_mask |= (mask & BUFFER_BITS_COLOR);
  83
  84
  85         /* HW stencil */
  86         if (mask & BUFFER_BIT_STENCIL) {
  87                 tri_mask |= BUFFER_BIT_STENCIL;
  88         }
  89
  90         /* HW depth */
  91         if (mask & BUFFER_BIT_DEPTH) {
  92                 tri_mask |= BUFFER_BIT_DEPTH;
  93         }
  94
  95         /* If we're doing a tri pass for depth/stencil, include a likely color
  96          * buffer with it.
  97          */
  98
  99         for (i = 0; i < BUFFER_COUNT; i++) {
 100           GLuint bufBit = 1 << i;
 101           if ((tri_mask) & bufBit) {
 102             if (!fb->Attachment[i].Renderbuffer->ClassID) {
 103               tri_mask &= ~bufBit;
 104               swrast_mask |= bufBit;
 105             }
 106           }
 107         }
 108
 109         /* SW fallback clearing */
 110         swrast_mask = mask & ~tri_mask;
 111
 112         if (tri_mask)
 113                 r700UserClear(ctx, tri_mask);
 114         if (swrast_mask) {
 115                 if (RADEON_DEBUG & DEBUG_FALLBACKS)
 116                         fprintf(stderr, "%s: swrast clear, mask: %x\n",
 117                                 __FUNCTION__, swrast_mask);
 118                 _swrast_Clear(ctx, swrast_mask);
 119         }
 120
 121 }
 122
 123