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
  46
  47 void
  48 st_init_blit(struct st_context *st)
  49 {
  50    st->blit = util_create_blit(st->pipe, st->cso_context);
  51 }
  52
  53
  54 void
  55 st_destroy_blit(struct st_context *st)
  56 {
  57    util_destroy_blit(st->blit);
  58    st->blit = NULL;
  59 }
  60
  61
  62 #if FEATURE_EXT_framebuffer_blit
  63
  64 static void
  65 st_BlitFramebuffer_resolve(struct gl_context *ctx,
  66                            GLbitfield mask,
  67                            struct pipe_resolve_info *info)
  68 {
  69    const GLbitfield depthStencil = GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT;
  70
  71    struct st_context *st = st_context(ctx);
  72
  73    struct st_renderbuffer *srcRb, *dstRb;
  74
  75    if (mask & GL_COLOR_BUFFER_BIT) {
  76       srcRb = st_renderbuffer(ctx->ReadBuffer->_ColorReadBuffer);
  77       dstRb = st_renderbuffer(ctx->DrawBuffer->_ColorDrawBuffers[0]);
  78
  79       info->mask = PIPE_MASK_RGBA;
  80
  81       info->src.res = srcRb->texture;
  82       info->src.layer = srcRb->surface->u.tex.first_layer;
  83       info->dst.res = dstRb->texture;
  84       info->dst.level = dstRb->surface->u.tex.level;
  85       info->dst.layer = dstRb->surface->u.tex.first_layer;
  86
  87       st->pipe->resource_resolve(st->pipe, info);
  88    }
  89
  90    if (mask & depthStencil) {
  91       struct gl_renderbuffer_attachment *srcDepth, *srcStencil;
  92       struct gl_renderbuffer_attachment *dstDepth, *dstStencil;
  93       boolean combined;
  94
  95       srcDepth = &ctx->ReadBuffer->Attachment[BUFFER_DEPTH];
  96       dstDepth = &ctx->DrawBuffer->Attachment[BUFFER_DEPTH];
  97       srcStencil = &ctx->ReadBuffer->Attachment[BUFFER_STENCIL];
  98       dstStencil = &ctx->DrawBuffer->Attachment[BUFFER_STENCIL];
  99
 100       combined =
 101          st_is_depth_stencil_combined(srcDepth, srcStencil) &&
 102          st_is_depth_stencil_combined(dstDepth, dstStencil);
 103
 104       if ((mask & GL_DEPTH_BUFFER_BIT) || combined) {
 105          /* resolve depth and, if combined and requested, stencil as well */
 106          srcRb = st_renderbuffer(srcDepth->Renderbuffer);
 107          dstRb = st_renderbuffer(dstDepth->Renderbuffer);
 108
 109          info->mask = (mask & GL_DEPTH_BUFFER_BIT) ? PIPE_MASK_Z : 0;
 110          if (combined && (mask & GL_STENCIL_BUFFER_BIT))
 111             info->mask |= PIPE_MASK_S;
 112
 113          info->src.res = srcRb->texture;
 114          info->src.layer = srcRb->surface->u.tex.first_layer;
 115          info->dst.res = dstRb->texture;
 116          info->dst.level = dstRb->surface->u.tex.level;
 117          info->dst.layer = dstRb->surface->u.tex.first_layer;
 118
 119          st->pipe->resource_resolve(st->pipe, info);
 120       }
 121
 122       if (mask & GL_STENCIL_BUFFER_BIT) {
 123          /* resolve separate stencil buffer */
 124          srcRb = st_renderbuffer(srcStencil->Renderbuffer);
 125          dstRb = st_renderbuffer(dstStencil->Renderbuffer);
 126
 127          info->mask = PIPE_MASK_S;
 128
 129          info->src.res = srcRb->texture;
 130          info->src.layer = srcRb->surface->u.tex.first_layer;
 131          info->dst.res = dstRb->texture;
 132          info->dst.level = dstRb->surface->u.tex.level;
 133          info->dst.layer = dstRb->surface->u.tex.first_layer;
 134
 135          st->pipe->resource_resolve(st->pipe, info);
 136       }
 137    }
 138 }
 139
 140 static void
 141 st_BlitFramebuffer(struct gl_context *ctx,
 142                    GLint srcX0, GLint srcY0, GLint srcX1, GLint srcY1,
 143                    GLint dstX0, GLint dstY0, GLint dstX1, GLint dstY1,
 144                    GLbitfield mask, GLenum filter)
 145 {
 146    const GLbitfield depthStencil = (GL_DEPTH_BUFFER_BIT |
 147                                     GL_STENCIL_BUFFER_BIT);
 148    struct st_context *st = st_context(ctx);
 149    const uint pFilter = ((filter == GL_NEAREST)
 150                          ? PIPE_TEX_MIPFILTER_NEAREST
 151                          : PIPE_TEX_MIPFILTER_LINEAR);
 152    struct gl_framebuffer *readFB = ctx->ReadBuffer;
 153    struct gl_framebuffer *drawFB = ctx->DrawBuffer;
 154
 155    st_validate_state(st);
 156
 157    if (!_mesa_clip_blit(ctx, &srcX0, &srcY0, &srcX1, &srcY1,
 158                         &dstX0, &dstY0, &dstX1, &dstY1)) {
 159       return; /* nothing to draw/blit */
 160    }
 161
 162    if (st_fb_orientation(drawFB) == Y_0_TOP) {
 163       /* invert Y for dest */
 164       dstY0 = drawFB->Height - dstY0;
 165       dstY1 = drawFB->Height - dstY1;
 166    }
 167
 168    if (st_fb_orientation(readFB) == Y_0_TOP) {
 169       /* invert Y for src */
 170       srcY0 = readFB->Height - srcY0;
 171       srcY1 = readFB->Height - srcY1;
 172    }
 173
 174    /* Disable conditional rendering. */
 175    if (st->render_condition) {
 176       st->pipe->render_condition(st->pipe, NULL, 0);
 177    }
 178
 179    if (readFB->Visual.sampleBuffers > drawFB->Visual.sampleBuffers) {
 180       struct pipe_resolve_info info;
 181
 182       if (dstX0 < dstX1) {
 183          info.dst.x0 = dstX0;
 184          info.dst.x1 = dstX1;
 185          info.src.x0 = srcX0;
 186          info.src.x1 = srcX1;
 187       } else {
 188          info.dst.x0 = dstX1;
 189          info.dst.x1 = dstX0;
 190          info.src.x0 = srcX1;
 191          info.src.x1 = srcX0;
 192       }
 193       if (dstY0 < dstY1) {
 194          info.dst.y0 = dstY0;
 195          info.dst.y1 = dstY1;
 196          info.src.y0 = srcY0;
 197          info.src.y1 = srcY1;
 198       } else {
 199          info.dst.y0 = dstY1;
 200          info.dst.y1 = dstY0;
 201          info.src.y0 = srcY1;
 202          info.src.y1 = srcY0;
 203       }
 204
 205       st_BlitFramebuffer_resolve(ctx, mask, &info); /* filter doesn't apply */
 206
 207       goto done;
 208    }
 209
 210    if (srcY0 > srcY1 && dstY0 > dstY1) {
 211       /* Both src and dst are upside down.  Swap Y to make it
 212        * right-side up to increase odds of using a fast path.
 213        * Recall that all Gallium raster coords have Y=0=top.
 214        */
 215       GLint tmp;
 216       tmp = srcY0;
 217       srcY0 = srcY1;
 218       srcY1 = tmp;
 219       tmp = dstY0;
 220       dstY0 = dstY1;
 221       dstY1 = tmp;
 222    }
 223
 224    if (mask & GL_COLOR_BUFFER_BIT) {
 225       struct gl_renderbuffer_attachment *srcAtt =
 226          &readFB->Attachment[readFB->_ColorReadBufferIndex];
 227
 228       if(srcAtt->Type == GL_TEXTURE) {
 229          struct st_texture_object *srcObj =
 230             st_texture_object(srcAtt->Texture);
 231          struct st_renderbuffer *dstRb =
 232             st_renderbuffer(drawFB->_ColorDrawBuffers[0]);
 233          struct pipe_surface *dstSurf = dstRb->surface;
 234
 235          if (!srcObj->pt)
 236             goto done;
 237
 238          util_blit_pixels(st->blit, srcObj->pt, srcAtt->TextureLevel,
 239                           srcX0, srcY0, srcX1, srcY1,
 240                           srcAtt->Zoffset + srcAtt->CubeMapFace,
 241                           dstSurf, dstX0, dstY0, dstX1, dstY1,
 242                           0.0, pFilter);
 243       }
 244       else {
 245          struct st_renderbuffer *srcRb =
 246             st_renderbuffer(readFB->_ColorReadBuffer);
 247          struct st_renderbuffer *dstRb =
 248             st_renderbuffer(drawFB->_ColorDrawBuffers[0]);
 249          struct pipe_surface *srcSurf = srcRb->surface;
 250          struct pipe_surface *dstSurf = dstRb->surface;
 251
 252          util_blit_pixels(st->blit,
 253                           srcRb->texture, srcSurf->u.tex.level,
 254                           srcX0, srcY0, srcX1, srcY1,
 255                           srcSurf->u.tex.first_layer,
 256                           dstSurf, dstX0, dstY0, dstX1, dstY1,
 257                           0.0, pFilter);
 258       }
 259    }
 260
 261    if (mask & depthStencil) {
 262       /* depth and/or stencil blit */
 263
 264       /* get src/dst depth surfaces */
 265       struct gl_renderbuffer_attachment *srcDepth =
 266          &readFB->Attachment[BUFFER_DEPTH];
 267       struct gl_renderbuffer_attachment *dstDepth =
 268          &drawFB->Attachment[BUFFER_DEPTH];
 269       struct gl_renderbuffer_attachment *srcStencil =
 270          &readFB->Attachment[BUFFER_STENCIL];
 271       struct gl_renderbuffer_attachment *dstStencil =
 272          &drawFB->Attachment[BUFFER_STENCIL];
 273
 274       struct st_renderbuffer *srcDepthRb =
 275          st_renderbuffer(readFB->Attachment[BUFFER_DEPTH].Renderbuffer);
 276       struct st_renderbuffer *dstDepthRb =
 277          st_renderbuffer(drawFB->Attachment[BUFFER_DEPTH].Renderbuffer);
 278       struct pipe_surface *dstDepthSurf =
 279          dstDepthRb ? dstDepthRb->surface : NULL;
 280
 281       if ((mask & depthStencil) == depthStencil &&
 282           st_is_depth_stencil_combined(srcDepth, srcStencil) &&
 283           st_is_depth_stencil_combined(dstDepth, dstStencil)) {
 284
 285          /* Blitting depth and stencil values between combined
 286           * depth/stencil buffers.  This is the ideal case for such buffers.
 287           */
 288          util_blit_pixels(st->blit,
 289                           srcDepthRb->texture,
 290                           srcDepthRb->surface->u.tex.level,
 291                           srcX0, srcY0, srcX1, srcY1,
 292                           srcDepthRb->surface->u.tex.first_layer,
 293                           dstDepthSurf, dstX0, dstY0, dstX1, dstY1,
 294                           0.0, pFilter);
 295       }
 296       else {
 297          /* blitting depth and stencil separately */
 298
 299          if (mask & GL_DEPTH_BUFFER_BIT) {
 300             util_blit_pixels(st->blit, srcDepthRb->texture,
 301                              srcDepthRb->surface->u.tex.level,
 302                              srcX0, srcY0, srcX1, srcY1,
 303                              srcDepthRb->surface->u.tex.first_layer,
 304                              dstDepthSurf, dstX0, dstY0, dstX1, dstY1,
 305                              0.0, pFilter);
 306          }
 307
 308          if (mask & GL_STENCIL_BUFFER_BIT) {
 309             /* blit stencil only */
 310             _mesa_problem(ctx, "st_BlitFramebuffer(STENCIL) not completed");
 311          }
 312       }
 313    }
 314
 315 done:
 316    /* Restore conditional rendering state. */
 317    if (st->render_condition) {
 318       st->pipe->render_condition(st->pipe, st->render_condition,
 319                                  st->condition_mode);
 320    }
 321 }
 322
 323
 324 void
 325 st_init_blit_functions(struct dd_function_table *functions)
 326 {
 327    functions->BlitFramebuffer = st_BlitFramebuffer;
 328 }
 329
 330 #endif /* FEATURE_EXT_framebuffer_blit */