src/mesa/state_tracker/st_cb_blit.c

   1 /**************************************************************************
   2  *
   3  * Copyright 2007 VMware, Inc.
   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 VMWARE 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  /*
  29   * Authors:
  30   *   Brian Paul
  31   */
  32
  33 #include "main/imports.h"
  34 #include "main/image.h"
  35 #include "main/macros.h"
  36
  37 #include "st_context.h"
  38 #include "st_texture.h"
  39 #include "st_cb_bitmap.h"
  40 #include "st_cb_blit.h"
  41 #include "st_cb_fbo.h"
  42 #include "st_manager.h"
  43 #include "st_scissor.h"
  44
  45 #include "util/u_format.h"
  46
  47 static void
  48 st_BlitFramebuffer(struct gl_context *ctx,
  49                    struct gl_framebuffer *readFB,
  50                    struct gl_framebuffer *drawFB,
  51                    GLint srcX0, GLint srcY0, GLint srcX1, GLint srcY1,
  52                    GLint dstX0, GLint dstY0, GLint dstX1, GLint dstY1,
  53                    GLbitfield mask, GLenum filter)
  54 {
  55    const GLbitfield depthStencil = (GL_DEPTH_BUFFER_BIT |
  56                                     GL_STENCIL_BUFFER_BIT);
  57    struct st_context *st = st_context(ctx);
  58    const uint pFilter = ((filter == GL_NEAREST)
  59                          ? PIPE_TEX_FILTER_NEAREST
  60                          : PIPE_TEX_FILTER_LINEAR);
  61    struct {
  62       GLint srcX0, srcY0, srcX1, srcY1;
  63       GLint dstX0, dstY0, dstX1, dstY1;
  64    } clip;
  65    struct pipe_blit_info blit;
  66
  67    st_manager_validate_framebuffers(st);
  68
  69    /* Make sure bitmap rendering has landed in the framebuffers */
  70    st_flush_bitmap_cache(st);
  71    st_invalidate_readpix_cache(st);
  72
  73    clip.srcX0 = srcX0;
  74    clip.srcY0 = srcY0;
  75    clip.srcX1 = srcX1;
  76    clip.srcY1 = srcY1;
  77    clip.dstX0 = dstX0;
  78    clip.dstY0 = dstY0;
  79    clip.dstX1 = dstX1;
  80    clip.dstY1 = dstY1;
  81
  82    /* NOTE: If the src and dst dimensions don't match, we cannot simply adjust
  83     * the integer coordinates to account for clipping (or scissors) because that
  84     * would make us cut off fractional parts, affecting the result of the blit.
  85     *
  86     * XXX: This should depend on mask !
  87     */
  88    if (!_mesa_clip_blit(ctx, readFB, drawFB,
  89                         &clip.srcX0, &clip.srcY0, &clip.srcX1, &clip.srcY1,
  90                         &clip.dstX0, &clip.dstY0, &clip.dstX1, &clip.dstY1)) {
  91       return; /* nothing to draw/blit */
  92    }
  93    memset(&blit, 0, sizeof(struct pipe_blit_info));
  94    blit.scissor_enable =
  95       (dstX0 != clip.dstX0) ||
  96       (dstY0 != clip.dstY0) ||
  97       (dstX1 != clip.dstX1) ||
  98       (dstY1 != clip.dstY1);
  99
 100    if (st_fb_orientation(drawFB) == Y_0_TOP) {
 101       /* invert Y for dest */
 102       dstY0 = drawFB->Height - dstY0;
 103       dstY1 = drawFB->Height - dstY1;
 104       /* invert Y for clip */
 105       clip.dstY0 = drawFB->Height - clip.dstY0;
 106       clip.dstY1 = drawFB->Height - clip.dstY1;
 107    }
 108    if (blit.scissor_enable) {
 109       blit.scissor.minx = MIN2(clip.dstX0, clip.dstX1);
 110       blit.scissor.miny = MIN2(clip.dstY0, clip.dstY1);
 111       blit.scissor.maxx = MAX2(clip.dstX0, clip.dstX1);
 112       blit.scissor.maxy = MAX2(clip.dstY0, clip.dstY1);
 113 #if 0
 114       debug_printf("scissor = (%i,%i)-(%i,%i)\n",
 115                    blit.scissor.minx,blit.scissor.miny,
 116                    blit.scissor.maxx,blit.scissor.maxy);
 117 #endif
 118    }
 119
 120    if (st_fb_orientation(readFB) == Y_0_TOP) {
 121       /* invert Y for src */
 122       srcY0 = readFB->Height - srcY0;
 123       srcY1 = readFB->Height - srcY1;
 124    }
 125
 126    if (srcY0 > srcY1 && dstY0 > dstY1) {
 127       /* Both src and dst are upside down.  Swap Y to make it
 128        * right-side up to increase odds of using a fast path.
 129        * Recall that all Gallium raster coords have Y=0=top.
 130        */
 131       GLint tmp;
 132       tmp = srcY0;
 133       srcY0 = srcY1;
 134       srcY1 = tmp;
 135       tmp = dstY0;
 136       dstY0 = dstY1;
 137       dstY1 = tmp;
 138    }
 139
 140    blit.src.box.depth = 1;
 141    blit.dst.box.depth = 1;
 142
 143    /* Destination dimensions have to be positive: */
 144    if (dstX0 < dstX1) {
 145       blit.dst.box.x = dstX0;
 146       blit.src.box.x = srcX0;
 147       blit.dst.box.width = dstX1 - dstX0;
 148       blit.src.box.width = srcX1 - srcX0;
 149    } else {
 150       blit.dst.box.x = dstX1;
 151       blit.src.box.x = srcX1;
 152       blit.dst.box.width = dstX0 - dstX1;
 153       blit.src.box.width = srcX0 - srcX1;
 154    }
 155    if (dstY0 < dstY1) {
 156       blit.dst.box.y = dstY0;
 157       blit.src.box.y = srcY0;
 158       blit.dst.box.height = dstY1 - dstY0;
 159       blit.src.box.height = srcY1 - srcY0;
 160    } else {
 161       blit.dst.box.y = dstY1;
 162       blit.src.box.y = srcY1;
 163       blit.dst.box.height = dstY0 - dstY1;
 164       blit.src.box.height = srcY0 - srcY1;
 165    }
 166
 167    if (drawFB != ctx->WinSysDrawBuffer)
 168       st_window_rectangles_to_blit(ctx, &blit);
 169
 170    blit.filter = pFilter;
 171    blit.render_condition_enable = TRUE;
 172    blit.alpha_blend = FALSE;
 173
 174    if (mask & GL_COLOR_BUFFER_BIT) {
 175       struct gl_renderbuffer_attachment *srcAtt =
 176          &readFB->Attachment[readFB->_ColorReadBufferIndex];
 177       GLuint i;
 178
 179       blit.mask = PIPE_MASK_RGBA;
 180
 181       if (srcAtt->Type == GL_TEXTURE) {
 182          struct st_texture_object *srcObj = st_texture_object(srcAtt->Texture);
 183
 184          if (!srcObj || !srcObj->pt) {
 185             return;
 186          }
 187
 188          blit.src.resource = srcObj->pt;
 189          blit.src.level = srcAtt->TextureLevel;
 190          blit.src.box.z = srcAtt->Zoffset + srcAtt->CubeMapFace;
 191          blit.src.format = srcObj->pt->format;
 192
 193          if (!ctx->Color.sRGBEnabled)
 194             blit.src.format = util_format_linear(blit.src.format);
 195       }
 196       else {
 197          struct st_renderbuffer *srcRb =
 198             st_renderbuffer(readFB->_ColorReadBuffer);
 199          struct pipe_surface *srcSurf;
 200
 201          if (!srcRb)
 202             return;
 203
 204          st_update_renderbuffer_surface(st, srcRb);
 205
 206          if (!srcRb->surface)
 207             return;
 208
 209          srcSurf = srcRb->surface;
 210
 211          blit.src.resource = srcSurf->texture;
 212          blit.src.level = srcSurf->u.tex.level;
 213          blit.src.box.z = srcSurf->u.tex.first_layer;
 214          blit.src.format = srcSurf->format;
 215       }
 216
 217       for (i = 0; i < drawFB->_NumColorDrawBuffers; i++) {
 218          struct st_renderbuffer *dstRb =
 219             st_renderbuffer(drawFB->_ColorDrawBuffers[i]);
 220
 221          if (dstRb) {
 222             struct pipe_surface *dstSurf;
 223
 224             st_update_renderbuffer_surface(st, dstRb);
 225
 226             dstSurf = dstRb->surface;
 227
 228             if (dstSurf) {
 229                blit.dst.resource = dstSurf->texture;
 230                blit.dst.level = dstSurf->u.tex.level;
 231                blit.dst.box.z = dstSurf->u.tex.first_layer;
 232                blit.dst.format = dstSurf->format;
 233
 234                st->pipe->blit(st->pipe, &blit);
 235                dstRb->defined = true; /* front buffer tracking */
 236             }
 237          }
 238       }
 239    }
 240
 241    if (mask & depthStencil) {
 242       /* depth and/or stencil blit */
 243
 244       /* get src/dst depth surfaces */
 245       struct st_renderbuffer *srcDepthRb =
 246          st_renderbuffer(readFB->Attachment[BUFFER_DEPTH].Renderbuffer);
 247       struct st_renderbuffer *dstDepthRb =
 248          st_renderbuffer(drawFB->Attachment[BUFFER_DEPTH].Renderbuffer);
 249       struct pipe_surface *dstDepthSurf =
 250          dstDepthRb ? dstDepthRb->surface : NULL;
 251
 252       struct st_renderbuffer *srcStencilRb =
 253          st_renderbuffer(readFB->Attachment[BUFFER_STENCIL].Renderbuffer);
 254       struct st_renderbuffer *dstStencilRb =
 255          st_renderbuffer(drawFB->Attachment[BUFFER_STENCIL].Renderbuffer);
 256       struct pipe_surface *dstStencilSurf =
 257          dstStencilRb ? dstStencilRb->surface : NULL;
 258
 259       if (_mesa_has_depthstencil_combined(readFB) &&
 260           _mesa_has_depthstencil_combined(drawFB)) {
 261          blit.mask = 0;
 262          if (mask & GL_DEPTH_BUFFER_BIT)
 263             blit.mask |= PIPE_MASK_Z;
 264          if (mask & GL_STENCIL_BUFFER_BIT)
 265             blit.mask |= PIPE_MASK_S;
 266
 267          blit.dst.resource = dstDepthSurf->texture;
 268          blit.dst.level = dstDepthSurf->u.tex.level;
 269          blit.dst.box.z = dstDepthSurf->u.tex.first_layer;
 270          blit.dst.format = dstDepthSurf->format;
 271
 272          blit.src.resource = srcDepthRb->texture;
 273          blit.src.level = srcDepthRb->surface->u.tex.level;
 274          blit.src.box.z = srcDepthRb->surface->u.tex.first_layer;
 275          blit.src.format = srcDepthRb->surface->format;
 276
 277          st->pipe->blit(st->pipe, &blit);
 278       }
 279       else {
 280          /* blitting depth and stencil separately */
 281
 282          if (mask & GL_DEPTH_BUFFER_BIT) {
 283             blit.mask = PIPE_MASK_Z;
 284
 285             blit.dst.resource = dstDepthSurf->texture;
 286             blit.dst.level = dstDepthSurf->u.tex.level;
 287             blit.dst.box.z = dstDepthSurf->u.tex.first_layer;
 288             blit.dst.format = dstDepthSurf->format;
 289
 290             blit.src.resource = srcDepthRb->texture;
 291             blit.src.level = srcDepthRb->surface->u.tex.level;
 292             blit.src.box.z = srcDepthRb->surface->u.tex.first_layer;
 293             blit.src.format = srcDepthRb->surface->format;
 294
 295             st->pipe->blit(st->pipe, &blit);
 296          }
 297
 298          if (mask & GL_STENCIL_BUFFER_BIT) {
 299             blit.mask = PIPE_MASK_S;
 300
 301             blit.dst.resource = dstStencilSurf->texture;
 302             blit.dst.level = dstStencilSurf->u.tex.level;
 303             blit.dst.box.z = dstStencilSurf->u.tex.first_layer;
 304             blit.dst.format = dstStencilSurf->format;
 305
 306             blit.src.resource = srcStencilRb->texture;
 307             blit.src.level = srcStencilRb->surface->u.tex.level;
 308             blit.src.box.z = srcStencilRb->surface->u.tex.first_layer;
 309             blit.src.format = srcStencilRb->surface->format;
 310
 311             st->pipe->blit(st->pipe, &blit);
 312          }
 313       }
 314    }
 315 }
 316
 317
 318 void
 319 st_init_blit_functions(struct dd_function_table *functions)
 320 {
 321    functions->BlitFramebuffer = st_BlitFramebuffer;
 322 }