src/mesa/drivers/dri/intel/intel_span.c

   1 /**************************************************************************
   2  *
   3  * Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas.
   4  * Copyright 2011 Intel Corporation
   5  * All Rights Reserved.
   6  *
   7  * Permission is hereby granted, free of charge, to any person obtaining a
   8  * copy of this software and associated documentation files (the
   9  * "Software"), to deal in the Software without restriction, including
  10  * without limitation the rights to use, copy, modify, merge, publish,
  11  * distribute, sub license, and/or sell copies of the Software, and to
  12  * permit persons to whom the Software is furnished to do so, subject to
  13  * the following conditions:
  14  *
  15  * The above copyright notice and this permission notice (including the
  16  * next paragraph) shall be included in all copies or substantial portions
  17  * of the Software.
  18  *
  19  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  20  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  21  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
  22  * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
  23  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  24  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  25  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  26  *
  27  * Authors:
  28  *     Chad Versace <chad@chad-versace.us>
  29  *
  30  **************************************************************************/
  31
  32 #include <stdbool.h>
  33 #include <stdint.h>
  34 #include "main/glheader.h"
  35 #include "main/macros.h"
  36 #include "main/mtypes.h"
  37 #include "main/colormac.h"
  38 #include "main/renderbuffer.h"
  39
  40 #include "intel_buffers.h"
  41 #include "intel_fbo.h"
  42 #include "intel_mipmap_tree.h"
  43 #include "intel_screen.h"
  44 #include "intel_span.h"
  45 #include "intel_regions.h"
  46 #include "intel_tex.h"
  47
  48 #include "swrast/swrast.h"
  49 #include "swrast/s_renderbuffer.h"
  50
  51 /**
  52  * Prepare for software rendering.  Map current read/draw framebuffers'
  53  * renderbuffers and all currently bound texture objects.
  54  */
  55 void
  56 intelSpanRenderStart(struct gl_context * ctx)
  57 {
  58    struct intel_context *intel = intel_context(ctx);
  59
  60    intel_flush(ctx);
  61    intel_prepare_render(intel);
  62    intel_flush(ctx);
  63
  64    _swrast_map_textures(ctx);
  65    _swrast_map_renderbuffers(ctx);
  66 }
  67
  68 /**
  69  * Called when done software rendering.  Unmap the buffers we mapped in
  70  * the above function.
  71  */
  72 void
  73 intelSpanRenderFinish(struct gl_context * ctx)
  74 {
  75    _swrast_flush(ctx);
  76    _swrast_unmap_textures(ctx);
  77    _swrast_unmap_renderbuffers(ctx);
  78 }
  79
  80
  81 void
  82 intelInitSpanFuncs(struct gl_context * ctx)
  83 {
  84    struct swrast_device_driver *swdd = _swrast_GetDeviceDriverReference(ctx);
  85    if (swdd) {
  86       swdd->SpanRenderStart = intelSpanRenderStart;
  87       swdd->SpanRenderFinish = intelSpanRenderFinish;
  88    }
  89 }