src/mesa/drivers/dri/intel/intel_tex_copy.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 "main/mtypes.h"
  29 #include "main/enums.h"
  30 #include "main/image.h"
  31 #include "main/teximage.h"
  32 #include "main/mipmap.h"
  33 #include "swrast/swrast.h"
  34
  35 #include "intel_screen.h"
  36 #include "intel_context.h"
  37 #include "intel_batchbuffer.h"
  38 #include "intel_buffers.h"
  39 #include "intel_mipmap_tree.h"
  40 #include "intel_regions.h"
  41 #include "intel_fbo.h"
  42 #include "intel_tex.h"
  43 #include "intel_blit.h"
  44
  45 #define FILE_DEBUG_FLAG DEBUG_TEXTURE
  46
  47 /**
  48  * Get the intel_region which is the source for any glCopyTex[Sub]Image call.
  49  *
  50  * Do the best we can using the blitter.  A future project is to use
  51  * the texture engine and fragment programs for these copies.
  52  */
  53 static const struct intel_region *
  54 get_teximage_source(struct intel_context *intel, GLenum internalFormat)
  55 {
  56    struct intel_renderbuffer *irb;
  57
  58    DBG("%s %s\n", __FUNCTION__,
  59        _mesa_lookup_enum_by_nr(internalFormat));
  60
  61    switch (internalFormat) {
  62    case GL_DEPTH_COMPONENT:
  63    case GL_DEPTH_COMPONENT16:
  64       irb = intel_get_renderbuffer(intel->ctx.ReadBuffer, BUFFER_DEPTH);
  65       if (irb && irb->region && irb->region->cpp == 2)
  66          return irb->region;
  67       return NULL;
  68    case GL_DEPTH24_STENCIL8_EXT:
  69    case GL_DEPTH_STENCIL_EXT:
  70       irb = intel_get_renderbuffer(intel->ctx.ReadBuffer, BUFFER_DEPTH);
  71       if (irb && irb->region && irb->region->cpp == 4)
  72          return irb->region;
  73       return NULL;
  74    case GL_RGBA:
  75    case GL_RGBA8:
  76    case GL_RGB:
  77    case GL_RGB8:
  78       return intel_readbuf_region(intel);
  79    default:
  80       return NULL;
  81    }
  82 }
  83
  84
  85 static GLboolean
  86 do_copy_texsubimage(struct intel_context *intel,
  87                     GLenum target,
  88                     struct intel_texture_image *intelImage,
  89                     GLenum internalFormat,
  90                     GLint dstx, GLint dsty,
  91                     GLint x, GLint y, GLsizei width, GLsizei height)
  92 {
  93    GLcontext *ctx = &intel->ctx;
  94    struct gl_texture_object *texObj = intelImage->base.TexObject;
  95    const struct intel_region *src =
  96       get_teximage_source(intel, internalFormat);
  97
  98    if (!intelImage->mt || !src) {
  99       if (INTEL_DEBUG & DEBUG_FALLBACKS)
 100          fprintf(stderr, "%s fail %p %p (0x%08x)\n",
 101                  __FUNCTION__, intelImage->mt, src, internalFormat);
 102       return GL_FALSE;
 103    }
 104
 105    if (intelImage->mt->cpp != src->cpp) {
 106       if (INTEL_DEBUG & DEBUG_FALLBACKS)
 107          fprintf(stderr, "%s fail %d vs %d cpp\n",
 108                  __FUNCTION__, intelImage->mt->cpp, src->cpp);
 109       return GL_FALSE;
 110    }
 111
 112    intelFlush(ctx);
 113    LOCK_HARDWARE(intel);
 114    {
 115       drm_intel_bo *dst_bo = intel_region_buffer(intel,
 116                                                  intelImage->mt->region,
 117                                                  INTEL_WRITE_PART);
 118       const GLint orig_x = x;
 119       const GLint orig_y = y;
 120       GLuint image_x, image_y;
 121       GLshort src_pitch;
 122
 123       intel_miptree_get_image_offset(intelImage->mt,
 124                                      intelImage->level,
 125                                      intelImage->face,
 126                                      0,
 127                                      &image_x, &image_y);
 128       /* Update dst for clipped src.  Need to also clip the source rect. */
 129       dstx += x - orig_x;
 130       dsty += y - orig_y;
 131
 132       /* Can't blit to tiled buffers with non-tile-aligned offset. */
 133       if (intelImage->mt->region->tiling == I915_TILING_Y) {
 134          UNLOCK_HARDWARE(intel);
 135          return GL_FALSE;
 136       }
 137
 138       if (ctx->ReadBuffer->Name == 0) {
 139          /* reading from a window, adjust x, y */
 140          const __DRIdrawablePrivate *dPriv = intel->driReadDrawable;
 141          y = dPriv->y + (dPriv->h - (y + height));
 142          x += dPriv->x;
 143
 144          /* Invert the data coming from the source rectangle due to GL
 145           * and hardware disagreeing on where y=0 is.
 146           *
 147           * It appears that our offsets and pitches get mangled
 148           * appropriately by the hardware, and we don't need to adjust them
 149           * on our own.
 150           */
 151          src_pitch = -src->pitch;
 152       } else {
 153          /* reading from a FBO, y is already oriented the way we like */
 154          src_pitch = src->pitch;
 155       }
 156
 157       if (!intelEmitCopyBlit(intel,
 158                              intelImage->mt->cpp,
 159                              src_pitch,
 160                              src->buffer,
 161                              src->draw_offset,
 162                              src->tiling,
 163                              intelImage->mt->pitch,
 164                              dst_bo,
 165                              0,
 166                              intelImage->mt->region->tiling,
 167                              x, y, image_x + dstx, image_y + dsty,
 168                              width, height,
 169                              GL_COPY)) {
 170          UNLOCK_HARDWARE(intel);
 171          return GL_FALSE;
 172       }
 173    }
 174
 175    UNLOCK_HARDWARE(intel);
 176
 177    /* GL_SGIS_generate_mipmap */
 178    if (intelImage->level == texObj->BaseLevel && texObj->GenerateMipmap) {
 179       intel_generate_mipmap(ctx, target, texObj);
 180    }
 181
 182    return GL_TRUE;
 183 }
 184
 185
 186 static void
 187 intelCopyTexImage1D(GLcontext * ctx, GLenum target, GLint level,
 188                     GLenum internalFormat,
 189                     GLint x, GLint y, GLsizei width, GLint border)
 190 {
 191    struct gl_texture_unit *texUnit =
 192       &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
 193    struct gl_texture_object *texObj =
 194       _mesa_select_tex_object(ctx, texUnit, target);
 195    struct gl_texture_image *texImage =
 196       _mesa_select_tex_image(ctx, texObj, target, level);
 197    int srcx, srcy, dstx, dsty, height;
 198
 199    if (border)
 200       goto fail;
 201
 202    /* Setup or redefine the texture object, mipmap tree and texture
 203     * image.  Don't populate yet.
 204     */
 205    ctx->Driver.TexImage1D(ctx, target, level, internalFormat,
 206                           width, border,
 207                           GL_RGBA, CHAN_TYPE, NULL,
 208                           &ctx->DefaultPacking, texObj, texImage);
 209    srcx = x;
 210    srcy = y;
 211    dstx = 0;
 212    dsty = 0;
 213    height = 1;
 214    if (!_mesa_clip_copytexsubimage(ctx,
 215                                    &dstx, &dsty,
 216                                    &srcx, &srcy,
 217                                    &width, &height))
 218       return;
 219
 220    if (!do_copy_texsubimage(intel_context(ctx), target,
 221                             intel_texture_image(texImage),
 222                             internalFormat, 0, 0, x, y, width, height))
 223       goto fail;
 224
 225    return;
 226
 227  fail:
 228    _swrast_copy_teximage1d(ctx, target, level, internalFormat, x, y,
 229                            width, border);
 230 }
 231
 232
 233 static void
 234 intelCopyTexImage2D(GLcontext * ctx, GLenum target, GLint level,
 235                     GLenum internalFormat,
 236                     GLint x, GLint y, GLsizei width, GLsizei height,
 237                     GLint border)
 238 {
 239    struct gl_texture_unit *texUnit =
 240       &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
 241    struct gl_texture_object *texObj =
 242       _mesa_select_tex_object(ctx, texUnit, target);
 243    struct gl_texture_image *texImage =
 244       _mesa_select_tex_image(ctx, texObj, target, level);
 245    int srcx, srcy, dstx, dsty;
 246
 247    if (border)
 248       goto fail;
 249
 250    /* Setup or redefine the texture object, mipmap tree and texture
 251     * image.  Don't populate yet.
 252     */
 253    ctx->Driver.TexImage2D(ctx, target, level, internalFormat,
 254                           width, height, border,
 255                           GL_RGBA, CHAN_TYPE, NULL,
 256                           &ctx->DefaultPacking, texObj, texImage);
 257
 258    srcx = x;
 259    srcy = y;
 260    dstx = 0;
 261    dsty = 0;
 262    if (!_mesa_clip_copytexsubimage(ctx,
 263                                    &dstx, &dsty,
 264                                    &srcx, &srcy,
 265                                    &width, &height))
 266       return;
 267
 268    if (!do_copy_texsubimage(intel_context(ctx), target,
 269                             intel_texture_image(texImage),
 270                             internalFormat, 0, 0, x, y, width, height))
 271       goto fail;
 272
 273    return;
 274
 275  fail:
 276    _swrast_copy_teximage2d(ctx, target, level, internalFormat, x, y,
 277                            width, height, border);
 278 }
 279
 280
 281 static void
 282 intelCopyTexSubImage1D(GLcontext * ctx, GLenum target, GLint level,
 283                        GLint xoffset, GLint x, GLint y, GLsizei width)
 284 {
 285    struct gl_texture_unit *texUnit =
 286       &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
 287    struct gl_texture_object *texObj =
 288       _mesa_select_tex_object(ctx, texUnit, target);
 289    struct gl_texture_image *texImage =
 290       _mesa_select_tex_image(ctx, texObj, target, level);
 291    GLenum internalFormat = texImage->InternalFormat;
 292
 293    /* XXX need to check <border> as in above function? */
 294
 295    /* Need to check texture is compatible with source format.
 296     */
 297
 298    if (!do_copy_texsubimage(intel_context(ctx), target,
 299                             intel_texture_image(texImage),
 300                             internalFormat, xoffset, 0, x, y, width, 1)) {
 301       _swrast_copy_texsubimage1d(ctx, target, level, xoffset, x, y, width);
 302    }
 303 }
 304
 305
 306 static void
 307 intelCopyTexSubImage2D(GLcontext * ctx, GLenum target, GLint level,
 308                        GLint xoffset, GLint yoffset,
 309                        GLint x, GLint y, GLsizei width, GLsizei height)
 310 {
 311    struct gl_texture_unit *texUnit =
 312       &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
 313    struct gl_texture_object *texObj =
 314       _mesa_select_tex_object(ctx, texUnit, target);
 315    struct gl_texture_image *texImage =
 316       _mesa_select_tex_image(ctx, texObj, target, level);
 317    GLenum internalFormat = texImage->InternalFormat;
 318
 319    /* Need to check texture is compatible with source format.
 320     */
 321
 322    if (!do_copy_texsubimage(intel_context(ctx), target,
 323                             intel_texture_image(texImage),
 324                             internalFormat,
 325                             xoffset, yoffset, x, y, width, height)) {
 326
 327       DBG("%s - fallback to swrast\n", __FUNCTION__);
 328
 329       _swrast_copy_texsubimage2d(ctx, target, level,
 330                                  xoffset, yoffset, x, y, width, height);
 331    }
 332 }
 333
 334
 335 void
 336 intelInitTextureCopyImageFuncs(struct dd_function_table *functions)
 337 {
 338    functions->CopyTexImage1D = intelCopyTexImage1D;
 339    functions->CopyTexImage2D = intelCopyTexImage2D;
 340    functions->CopyTexSubImage1D = intelCopyTexSubImage1D;
 341    functions->CopyTexSubImage2D = intelCopyTexSubImage2D;
 342 }