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