src/mesa/state_tracker/st_cb_blit.c

   1 /**************************************************************************
   2  *
   3  * Copyright 2007 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  /*
  29   * Authors:
  30   *   Brian Paul
  31   */
  32
  33 #include "main/imports.h"
  34 #include "main/image.h"
  35 #include "main/macros.h"
  36 #include "main/mfeatures.h"
  37
  38 #include "st_context.h"
  39 #include "st_texture.h"
  40 #include "st_cb_blit.h"
  41 #include "st_cb_fbo.h"
  42 #include "st_atom.h"
  43
  44 #include "util/u_blit.h"
  45 #include "util/u_format.h"
  46
  47
  48 void
  49 st_init_blit(struct st_context *st)
  50 {
  51    st->blit = util_create_blit(st->pipe, st->cso_context);
  52 }
  53
  54
  55 void
  56 st_destroy_blit(struct st_context *st)
  57 {
  58    util_destroy_blit(st->blit);
  59    st->blit = NULL;
  60 }
  61
  62
  63 static void
  64 st_BlitFramebuffer(struct gl_context *ctx,
  65                    GLint srcX0, GLint srcY0, GLint srcX1, GLint srcY1,
  66                    GLint dstX0, GLint dstY0, GLint dstX1, GLint dstY1,
  67                    GLbitfield mask, GLenum filter)
  68 {
  69    const GLbitfield depthStencil = (GL_DEPTH_BUFFER_BIT |
  70                                     GL_STENCIL_BUFFER_BIT);
  71    struct st_context *st = st_context(ctx);
  72    const uint pFilter = ((filter == GL_NEAREST)
  73                          ? PIPE_TEX_FILTER_NEAREST
  74                          : PIPE_TEX_FILTER_LINEAR);
  75    struct gl_framebuffer *readFB = ctx->ReadBuffer;
  76    struct gl_framebuffer *drawFB = ctx->DrawBuffer;
  77    struct {
  78       GLint srcX0, srcY0, srcX1, srcY1;
  79       GLint dstX0, dstY0, dstX1, dstY1;
  80    } clip;
  81    struct pipe_blit_info blit;
  82
  83    st_validate_state(st);
  84
  85    clip.srcX0 = srcX0;
  86    clip.srcY0 = srcY0;
  87    clip.srcX1 = srcX1;
  88    clip.srcY1 = srcY1;
  89    clip.dstX0 = dstX0;
  90    clip.dstY0 = dstY0;
  91    clip.dstX1 = dstX1;
  92    clip.dstY1 = dstY1;
  93
  94    /* NOTE: If the src and dst dimensions don't match, we cannot simply adjust
  95     * the integer coordinates to account for clipping (or scissors) because that
  96     * would make us cut off fractional parts, affecting the result of the blit.
  97     *
  98     * XXX: This should depend on mask !
  99     */
 100    if (!_mesa_clip_blit(ctx,
 101                         &clip.srcX0, &clip.srcY0, &clip.srcX1, &clip.srcY1,
 102                         &clip.dstX0, &clip.dstY0, &clip.dstX1, &clip.dstY1)) {
 103       return; /* nothing to draw/blit */
 104    }
 105    blit.scissor_enable =
 106       (dstX0 != clip.dstX0) ||
 107       (dstY0 != clip.dstY0) ||
 108       (dstX1 != clip.dstX1) ||
 109       (dstY1 != clip.dstY1);
 110
 111    if (st_fb_orientation(drawFB) == Y_0_TOP) {
 112       /* invert Y for dest */
 113       dstY0 = drawFB->Height - dstY0;
 114       dstY1 = drawFB->Height - dstY1;
 115       /* invert Y for clip */
 116       clip.dstY0 = drawFB->Height - clip.dstY0;
 117       clip.dstY1 = drawFB->Height - clip.dstY1;
 118    }
 119    if (blit.scissor_enable) {
 120       blit.scissor.minx = MIN2(clip.dstX0, clip.dstX1);
 121       blit.scissor.miny = MIN2(clip.dstY0, clip.dstY1);
 122       blit.scissor.maxx = MAX2(clip.dstX0, clip.dstX1);
 123       blit.scissor.maxy = MAX2(clip.dstY0, clip.dstY1);
 124 #if 0
 125       debug_printf("scissor = (%i,%i)-(%i,%i)\n",
 126                    blit.scissor.minx,blit.scissor.miny,
 127                    blit.scissor.maxx,blit.scissor.maxy);
 128 #endif
 129    }
 130
 131    if (st_fb_orientation(readFB) == Y_0_TOP) {
 132       /* invert Y for src */
 133       srcY0 = readFB->Height - srcY0;
 134       srcY1 = readFB->Height - srcY1;
 135    }
 136
 137    if (srcY0 > srcY1 && dstY0 > dstY1) {
 138       /* Both src and dst are upside down.  Swap Y to make it
 139        * right-side up to increase odds of using a fast path.
 140        * Recall that all Gallium raster coords have Y=0=top.
 141        */
 142       GLint tmp;
 143       tmp = srcY0;
 144       srcY0 = srcY1;
 145       srcY1 = tmp;
 146       tmp = dstY0;
 147       dstY0 = dstY1;
 148       dstY1 = tmp;
 149    }
 150
 151    blit.src.box.depth = 1;
 152    blit.dst.box.depth = 1;
 153
 154    /* Destination dimensions have to be positive: */
 155    if (dstX0 < dstX1) {
 156       blit.dst.box.x = dstX0;
 157       blit.src.box.x = srcX0;
 158       blit.dst.box.width = dstX1 - dstX0;
 159       blit.src.box.width = srcX1 - srcX0;
 160    } else {
 161       blit.dst.box.x = dstX1;
 162       blit.src.box.x = srcX1;
 163       blit.dst.box.width = dstX0 - dstX1;
 164       blit.src.box.width = srcX0 - srcX1;
 165    }
 166    if (dstY0 < dstY1) {
 167       blit.dst.box.y = dstY0;
 168       blit.src.box.y = srcY0;
 169       blit.dst.box.height = dstY1 - dstY0;
 170       blit.src.box.height = srcY1 - srcY0;
 171    } else {
 172       blit.dst.box.y = dstY1;
 173       blit.src.box.y = srcY1;
 174       blit.dst.box.height = dstY0 - dstY1;
 175       blit.src.box.height = srcY0 - srcY1;
 176    }
 177
 178    blit.filter = pFilter;
 179
 180    if (mask & GL_COLOR_BUFFER_BIT) {
 181       struct gl_renderbuffer_attachment *srcAtt =
 182          &readFB->Attachment[readFB->_ColorReadBufferIndex];
 183
 184       blit.mask = PIPE_MASK_RGBA;
 185
 186       if (srcAtt->Type == GL_TEXTURE) {
 187          struct st_texture_object *srcObj = st_texture_object(srcAtt->Texture);
 188          GLuint i;
 189
 190          if (!srcObj || !srcObj->pt) {
 191             return;
 192          }
 193
 194          for (i = 0; i < drawFB->_NumColorDrawBuffers; i++) {
 195             struct st_renderbuffer *dstRb =
 196                st_renderbuffer(drawFB->_ColorDrawBuffers[i]);
 197
 198             if (dstRb) {
 199                struct pipe_surface *dstSurf = dstRb->surface;
 200
 201                if (dstSurf) {
 202                   blit.dst.resource = dstSurf->texture;
 203                   blit.dst.level = dstSurf->u.tex.level;
 204                   blit.dst.box.z = dstSurf->u.tex.first_layer;
 205                   blit.dst.format = util_format_linear(dstSurf->format);
 206
 207                   blit.src.resource = srcObj->pt;
 208                   blit.src.level = srcAtt->TextureLevel;
 209                   blit.src.box.z = srcAtt->Zoffset + srcAtt->CubeMapFace;
 210                   blit.src.format = util_format_linear(srcObj->pt->format);
 211
 212                   st->pipe->blit(st->pipe, &blit);
 213                }
 214             }
 215          }
 216       }
 217       else {
 218          struct st_renderbuffer *srcRb =
 219             st_renderbuffer(readFB->_ColorReadBuffer);
 220          struct pipe_surface *srcSurf;
 221          GLuint i;
 222
 223          if (!srcRb || !srcRb->surface) {
 224             return;
 225          }
 226
 227          srcSurf = srcRb->surface;
 228
 229          for (i = 0; i < drawFB->_NumColorDrawBuffers; i++) {
 230             struct st_renderbuffer *dstRb =
 231                st_renderbuffer(drawFB->_ColorDrawBuffers[i]);
 232
 233             if (dstRb) {
 234                struct pipe_surface *dstSurf = dstRb->surface;
 235
 236                if (dstSurf) {
 237                   blit.dst.resource = dstSurf->texture;
 238                   blit.dst.level = dstSurf->u.tex.level;
 239                   blit.dst.box.z = dstSurf->u.tex.first_layer;
 240                   blit.dst.format = util_format_linear(dstSurf->format);
 241
 242                   blit.src.resource = srcSurf->texture;
 243                   blit.src.level = srcSurf->u.tex.level;
 244                   blit.src.box.z = srcSurf->u.tex.first_layer;
 245                   blit.src.format = util_format_linear(srcSurf->format);
 246
 247                   st->pipe->blit(st->pipe, &blit);
 248                }
 249             }
 250          }
 251       }
 252    }
 253
 254    if (mask & depthStencil) {
 255       /* depth and/or stencil blit */
 256
 257       /* get src/dst depth surfaces */
 258       struct gl_renderbuffer_attachment *srcDepth =
 259          &readFB->Attachment[BUFFER_DEPTH];
 260       struct gl_renderbuffer_attachment *dstDepth =
 261          &drawFB->Attachment[BUFFER_DEPTH];
 262       struct gl_renderbuffer_attachment *srcStencil =
 263          &readFB->Attachment[BUFFER_STENCIL];
 264       struct gl_renderbuffer_attachment *dstStencil =
 265          &drawFB->Attachment[BUFFER_STENCIL];
 266
 267       struct st_renderbuffer *srcDepthRb =
 268          st_renderbuffer(srcDepth->Renderbuffer);
 269       struct st_renderbuffer *dstDepthRb =
 270          st_renderbuffer(dstDepth->Renderbuffer);
 271       struct pipe_surface *dstDepthSurf =
 272          dstDepthRb ? dstDepthRb->surface : NULL;
 273
 274       struct st_renderbuffer *srcStencilRb =
 275          st_renderbuffer(srcStencil->Renderbuffer);
 276       struct st_renderbuffer *dstStencilRb =
 277          st_renderbuffer(dstStencil->Renderbuffer);
 278       struct pipe_surface *dstStencilSurf =
 279          dstStencilRb ? dstStencilRb->surface : NULL;
 280
 281       if (st_is_depth_stencil_combined(srcDepth, srcStencil) &&
 282           st_is_depth_stencil_combined(dstDepth, dstStencil)) {
 283          blit.mask = 0;
 284          if (mask & GL_DEPTH_BUFFER_BIT)
 285             blit.mask |= PIPE_MASK_Z;
 286          if (mask & GL_STENCIL_BUFFER_BIT)
 287             blit.mask |= PIPE_MASK_S;
 288
 289          blit.dst.resource = dstDepthSurf->texture;
 290          blit.dst.level = dstDepthSurf->u.tex.level;
 291          blit.dst.box.z = dstDepthSurf->u.tex.first_layer;
 292          blit.dst.format = dstDepthSurf->format;
 293
 294          blit.src.resource = srcDepthRb->texture;
 295          blit.src.level = srcDepthRb->surface->u.tex.level;
 296          blit.src.box.z = srcDepthRb->surface->u.tex.first_layer;
 297          blit.src.format = srcDepthRb->surface->format;
 298
 299          st->pipe->blit(st->pipe, &blit);
 300       }
 301       else {
 302          /* blitting depth and stencil separately */
 303
 304          if (mask & GL_DEPTH_BUFFER_BIT) {
 305             blit.mask = PIPE_MASK_Z;
 306
 307             blit.dst.resource = dstDepthSurf->texture;
 308             blit.dst.level = dstDepthSurf->u.tex.level;
 309             blit.dst.box.z = dstDepthSurf->u.tex.first_layer;
 310             blit.dst.format = dstDepthSurf->format;
 311
 312             blit.src.resource = srcDepthRb->texture;
 313             blit.src.level = srcDepthRb->surface->u.tex.level;
 314             blit.src.box.z = srcDepthRb->surface->u.tex.first_layer;
 315             blit.src.format = srcDepthRb->surface->format;
 316
 317             st->pipe->blit(st->pipe, &blit);
 318          }
 319
 320          if (mask & GL_STENCIL_BUFFER_BIT) {
 321             blit.mask = PIPE_MASK_S;
 322
 323             blit.dst.resource = dstStencilSurf->texture;
 324             blit.dst.level = dstStencilSurf->u.tex.level;
 325             blit.dst.box.z = dstStencilSurf->u.tex.first_layer;
 326             blit.dst.format = dstStencilSurf->format;
 327
 328             blit.src.resource = srcStencilRb->texture;
 329             blit.src.level = srcStencilRb->surface->u.tex.level;
 330             blit.src.box.z = srcStencilRb->surface->u.tex.first_layer;
 331             blit.src.format = srcStencilRb->surface->format;
 332
 333             st->pipe->blit(st->pipe, &blit);
 334          }
 335       }
 336    }
 337 }
 338
 339
 340 void
 341 st_init_blit_functions(struct dd_function_table *functions)
 342 {
 343    functions->BlitFramebuffer = st_BlitFramebuffer;
 344 }