src/gallium/winsys/egl_drm/intel/intel_swapbuffers.c

   1 /**************************************************************************
   2  *
   3  * Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas.
   4  * All Rights Reserved.
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * copy of this software and associated documentation files (the
   8  * "Software"), to deal in the Software without restriction, including
   9  * without limitation the rights to use, copy, modify, merge, publish,
  10  * distribute, sub license, and/or sell copies of the Software, and to
  11  * permit persons to whom the Software is furnished to do so, subject to
  12  * the following conditions:
  13  *
  14  * The above copyright notice and this permission notice (including the
  15  * next paragraph) shall be included in all copies or substantial portions
  16  * of the Software.
  17  *
  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  19  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  20  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
  21  * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
  22  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  23  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  24  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  25  *
  26  **************************************************************************/
  27
  28 #include "intel_screen.h"
  29 #include "intel_context.h"
  30 #include "intel_batchbuffer.h"
  31 #include "intel_reg.h"
  32
  33 #include "pipe/p_context.h"
  34 #include "state_tracker/st_public.h"
  35 #include "state_tracker/st_context.h"
  36 #include "state_tracker/st_cb_fbo.h"
  37 #include "intel_egl.h"
  38
  39
  40 static void
  41 intel_display_surface(struct egl_drm_drawable *draw,
  42                       struct pipe_surface *surf);
  43
  44 void intel_swap_buffers(struct egl_drm_drawable *draw)
  45 {
  46         struct intel_framebuffer *intel_fb = (struct intel_framebuffer *)draw->priv;
  47         struct pipe_surface *back_surf;
  48
  49         assert(intel_fb);
  50         assert(intel_fb->stfb);
  51
  52         back_surf = st_get_framebuffer_surface(intel_fb->stfb, ST_SURFACE_BACK_LEFT);
  53         if (back_surf) {
  54                 st_notify_swapbuffers(intel_fb->stfb);
  55                 if (intel_fb->front)
  56                         intel_display_surface(draw, back_surf);
  57                 st_notify_swapbuffers_complete(intel_fb->stfb);
  58         }
  59 }
  60
  61 static void
  62 intel_display_surface(struct egl_drm_drawable *draw,
  63                       struct pipe_surface *surf)
  64 {
  65         struct intel_context *intel = NULL;
  66         struct intel_framebuffer *intel_fb = (struct intel_framebuffer *)draw->priv;
  67         struct _DriFenceObject *fence;
  68
  69         //const int srcWidth = surf->width;
  70         //const int srcHeight = surf->height;
  71
  72         intel = intel_fb->screen->dummy;
  73         if (!intel) {
  74                 printf("No dummy context\n");
  75                 return;
  76         }
  77
  78         const int dstWidth = intel_fb->front->width;
  79         const int dstHeight = intel_fb->front->height;
  80         const int dstPitch = intel_fb->front->pitch / 4;//draw->front.cpp;
  81
  82         const int cpp = 4;//intel_fb->front->cpp;
  83         const int srcPitch = surf->stride / cpp;
  84
  85         int BR13, CMD;
  86         //int i;
  87
  88         BR13 = (dstPitch * cpp) | (0xCC << 16) | (1 << 24) | (1 << 25);
  89         CMD = (XY_SRC_COPY_BLT_CMD | XY_SRC_COPY_BLT_WRITE_ALPHA |
  90                         XY_SRC_COPY_BLT_WRITE_RGB);
  91
  92         BEGIN_BATCH(8, 2);
  93         OUT_BATCH(CMD);
  94         OUT_BATCH(BR13);
  95         OUT_BATCH((0 << 16) | 0);
  96         OUT_BATCH((dstHeight << 16) | dstWidth);
  97
  98         OUT_RELOC(intel_fb->front_buffer,
  99                 DRM_BO_FLAG_MEM_TT | DRM_BO_FLAG_WRITE,
 100                 DRM_BO_MASK_MEM | DRM_BO_FLAG_WRITE, 0);
 101
 102         OUT_BATCH((0 << 16) | 0);
 103         OUT_BATCH((srcPitch * cpp) & 0xffff);
 104         OUT_RELOC(dri_bo(surf->buffer),
 105                         DRM_BO_FLAG_MEM_TT | DRM_BO_FLAG_READ,
 106                         DRM_BO_MASK_MEM | DRM_BO_FLAG_READ, 0);
 107
 108         fence = intel_be_batchbuffer_flush(intel->base.batch);
 109         driFenceUnReference(&fence);
 110         intel_be_batchbuffer_finish(intel->base.batch);
 111 }