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/texstate.h"
  33 #include "main/mipmap.h"
  34
  35 #include "drivers/common/meta.h"
  36
  37 #include "intel_screen.h"
  38 #include "intel_context.h"
  39 #include "intel_buffers.h"
  40 #include "intel_mipmap_tree.h"
  41 #include "intel_regions.h"
  42 #include "intel_fbo.h"
  43 #include "intel_tex.h"
  44 #include "intel_blit.h"
  45
  46 #define FILE_DEBUG_FLAG DEBUG_TEXTURE
  47
  48 /**
  49  * Get the intel_region which is the source for any glCopyTex[Sub]Image call.
  50  *
  51  * Do the best we can using the blitter.  A future project is to use
  52  * the texture engine and fragment programs for these copies.
  53  */
  54 static const struct intel_region *
  55 get_teximage_source(struct intel_context *intel, GLenum internalFormat)
  56 {
  57    struct intel_renderbuffer *irb;
  58
  59    DBG("%s %s\n", __FUNCTION__,
  60        _mesa_lookup_enum_by_nr(internalFormat));
  61
  62    switch (internalFormat) {
  63    case GL_DEPTH_COMPONENT:
  64    case GL_DEPTH_COMPONENT16:
  65       irb = intel_get_renderbuffer(intel->ctx.ReadBuffer, BUFFER_DEPTH);
  66       if (irb && irb->region && irb->region->cpp == 2)
  67          return irb->region;
  68       return NULL;
  69    case GL_DEPTH24_STENCIL8_EXT:
  70    case GL_DEPTH_STENCIL_EXT:
  71       irb = intel_get_renderbuffer(intel->ctx.ReadBuffer, BUFFER_DEPTH);
  72       if (irb && irb->region && irb->region->cpp == 4)
  73          return irb->region;
  74       return NULL;
  75    case GL_RGBA:
  76    case GL_RGBA8:
  77    case GL_RGB:
  78    case GL_RGB8:
  79       return intel_readbuf_region(intel);
  80    default:
  81       return NULL;
  82    }
  83 }
  84
  85
  86 static GLboolean
  87 do_copy_texsubimage(struct intel_context *intel,
  88                     GLenum target,
  89                     struct intel_texture_image *intelImage,
  90                     GLenum internalFormat,
  91                     GLint dstx, GLint dsty,
  92                     GLint x, GLint y, GLsizei width, GLsizei height)
  93 {
  94    GLcontext *ctx = &intel->ctx;
  95    const struct intel_region *src = get_teximage_source(intel, internalFormat);
  96
  97    if (!intelImage->mt || !src) {
  98       if (INTEL_DEBUG & DEBUG_FALLBACKS)
  99          fprintf(stderr, "%s fail %p %p (0x%08x)\n",
 100                  __FUNCTION__, intelImage->mt, src, internalFormat);
 101       return GL_FALSE;
 102    }
 103
 104    if (intelImage->mt->cpp != src->cpp) {
 105       if (INTEL_DEBUG & DEBUG_FALLBACKS)
 106          fprintf(stderr, "%s fail %d vs %d cpp\n",
 107                  __FUNCTION__, intelImage->mt->cpp, src->cpp);
 108       return GL_FALSE;
 109    }
 110
 111    /* intelFlush(ctx); */
 112    {
 113       drm_intel_bo *dst_bo = intel_region_buffer(intel,
 114                                                  intelImage->mt->region,
 115                                                  INTEL_WRITE_PART);
 116       const GLint orig_x = x;
 117       const GLint orig_y = y;
 118       GLuint image_x, image_y;
 119       GLshort src_pitch;
 120
 121       /* get dest x/y in destination texture */
 122       intel_miptree_get_image_offset(intelImage->mt,
 123                                      intelImage->level,
 124                                      intelImage->face,
 125                                      0,
 126                                      &image_x, &image_y);
 127       /* Update dst for clipped src.  Need to also clip the source rect. */
 128       dstx += x - orig_x;
 129       dsty += y - orig_y;
 130
 131       /* Can't blit to tiled buffers with non-tile-aligned offset. */
 132       if (intelImage->mt->region->tiling == I915_TILING_Y) {
 133          return GL_FALSE;
 134       }
 135
 136       if (ctx->ReadBuffer->Name == 0) {
 137          /* reading from a window, adjust x, y */
 138          const __DRIdrawable *dPriv = intel->driReadDrawable;
 139          y = dPriv->y + (dPriv->h - (y + height));
 140          x += dPriv->x;
 141
 142          /* Invert the data coming from the source rectangle due to GL
 143           * and hardware disagreeing on where y=0 is.
 144           *
 145           * It appears that our offsets and pitches get mangled
 146           * appropriately by the hardware, and we don't need to adjust them
 147           * on our own.
 148           */
 149          src_pitch = -src->pitch;
 150       } else {
 151          /* reading from a FBO, y is already oriented the way we like */
 152          src_pitch = src->pitch;
 153       }
 154
 155       /* blit from src buffer to texture */
 156       if (!intelEmitCopyBlit(intel,
 157                              intelImage->mt->cpp,
 158                              src_pitch,
 159                              src->buffer,
 160                              0,
 161                              src->tiling,
 162                              intelImage->mt->pitch,
 163                              dst_bo,
 164                              0,
 165                              intelImage->mt->region->tiling,
 166                              src->draw_x + x, src->draw_y + y,
 167                              image_x + dstx, image_y + dsty,
 168                              width, height,
 169                              GL_COPY)) {
 170          return GL_FALSE;
 171       }
 172    }
 173
 174    return GL_TRUE;
 175 }
 176
 177
 178 static void
 179 intelCopyTexImage1D(GLcontext * ctx, GLenum target, GLint level,
 180                     GLenum internalFormat,
 181                     GLint x, GLint y, GLsizei width, GLint border)
 182 {
 183    struct gl_texture_unit *texUnit = _mesa_get_current_tex_unit(ctx);
 184    struct gl_texture_object *texObj =
 185       _mesa_select_tex_object(ctx, texUnit, target);
 186    struct gl_texture_image *texImage =
 187       _mesa_select_tex_image(ctx, texObj, target, level);
 188    int srcx, srcy, dstx, dsty, height;
 189
 190    if (border)
 191       goto fail;
 192
 193    /* Setup or redefine the texture object, mipmap tree and texture
 194     * image.  Don't populate yet.
 195     */
 196    ctx->Driver.TexImage1D(ctx, target, level, internalFormat,
 197                           width, border,
 198                           GL_RGBA, CHAN_TYPE, NULL,
 199                           &ctx->DefaultPacking, texObj, texImage);
 200    srcx = x;
 201    srcy = y;
 202    dstx = 0;
 203    dsty = 0;
 204    height = 1;
 205    if (!_mesa_clip_copytexsubimage(ctx,
 206                                    &dstx, &dsty,
 207                                    &srcx, &srcy,
 208                                    &width, &height))
 209       return;
 210
 211    if (!do_copy_texsubimage(intel_context(ctx), target,
 212                             intel_texture_image(texImage),
 213                             internalFormat, 0, 0, x, y, width, height))
 214       goto fail;
 215
 216    return;
 217
 218  fail:
 219    if (INTEL_DEBUG & DEBUG_FALLBACKS)
 220       fprintf(stderr, "%s - fallback to swrast\n", __FUNCTION__);
 221    _mesa_meta_CopyTexImage1D(ctx, target, level, internalFormat, x, y,
 222                              width, border);
 223 }
 224
 225
 226 static void
 227 intelCopyTexImage2D(GLcontext * ctx, GLenum target, GLint level,
 228                     GLenum internalFormat,
 229                     GLint x, GLint y, GLsizei width, GLsizei height,
 230                     GLint border)
 231 {
 232    struct gl_texture_unit *texUnit = _mesa_get_current_tex_unit(ctx);
 233    struct gl_texture_object *texObj =
 234       _mesa_select_tex_object(ctx, texUnit, target);
 235    struct gl_texture_image *texImage =
 236       _mesa_select_tex_image(ctx, texObj, target, level);
 237    int srcx, srcy, dstx, dsty;
 238
 239    if (border)
 240       goto fail;
 241
 242    /* Setup or redefine the texture object, mipmap tree and texture
 243     * image.  Don't populate yet.
 244     */
 245    ctx->Driver.TexImage2D(ctx, target, level, internalFormat,
 246                           width, height, border,
 247                           GL_RGBA, GL_UNSIGNED_BYTE, NULL,
 248                           &ctx->DefaultPacking, texObj, texImage);
 249
 250    srcx = x;
 251    srcy = y;
 252    dstx = 0;
 253    dsty = 0;
 254    if (!_mesa_clip_copytexsubimage(ctx,
 255                                    &dstx, &dsty,
 256                                    &srcx, &srcy,
 257                                    &width, &height))
 258       return;
 259
 260    if (!do_copy_texsubimage(intel_context(ctx), target,
 261                             intel_texture_image(texImage),
 262                             internalFormat, 0, 0, x, y, width, height))
 263       goto fail;
 264
 265    return;
 266
 267  fail:
 268    if (INTEL_DEBUG & DEBUG_FALLBACKS)
 269       fprintf(stderr, "%s - fallback to swrast\n", __FUNCTION__);
 270    _mesa_meta_CopyTexImage2D(ctx, target, level, internalFormat, x, y,
 271                              width, height, border);
 272 }
 273
 274
 275 static void
 276 intelCopyTexSubImage1D(GLcontext * ctx, GLenum target, GLint level,
 277                        GLint xoffset, GLint x, GLint y, GLsizei width)
 278 {
 279    struct gl_texture_unit *texUnit = _mesa_get_current_tex_unit(ctx);
 280    struct gl_texture_object *texObj =
 281       _mesa_select_tex_object(ctx, texUnit, target);
 282    struct gl_texture_image *texImage =
 283       _mesa_select_tex_image(ctx, texObj, target, level);
 284    GLenum internalFormat = texImage->InternalFormat;
 285
 286    /* XXX need to check <border> as in above function? */
 287
 288    /* Need to check texture is compatible with source format.
 289     */
 290
 291    if (!do_copy_texsubimage(intel_context(ctx), target,
 292                             intel_texture_image(texImage),
 293                             internalFormat, xoffset, 0, x, y, width, 1)) {
 294       if (INTEL_DEBUG & DEBUG_FALLBACKS)
 295          fprintf(stderr, "%s - fallback to swrast\n", __FUNCTION__);
 296       _mesa_meta_CopyTexSubImage1D(ctx, target, level, xoffset, x, y, width);
 297    }
 298 }
 299
 300
 301 static void
 302 intelCopyTexSubImage2D(GLcontext * ctx, GLenum target, GLint level,
 303                        GLint xoffset, GLint yoffset,
 304                        GLint x, GLint y, GLsizei width, GLsizei height)
 305 {
 306    struct gl_texture_unit *texUnit = _mesa_get_current_tex_unit(ctx);
 307    struct gl_texture_object *texObj =
 308       _mesa_select_tex_object(ctx, texUnit, target);
 309    struct gl_texture_image *texImage =
 310       _mesa_select_tex_image(ctx, texObj, target, level);
 311    GLenum internalFormat = texImage->InternalFormat;
 312
 313    /* Need to check texture is compatible with source format.
 314     */
 315
 316    if (!do_copy_texsubimage(intel_context(ctx), target,
 317                             intel_texture_image(texImage),
 318                             internalFormat,
 319                             xoffset, yoffset, x, y, width, height)) {
 320
 321       if (INTEL_DEBUG & DEBUG_FALLBACKS)
 322          fprintf(stderr, "%s - fallback to swrast\n", __FUNCTION__);
 323       _mesa_meta_CopyTexSubImage2D(ctx, target, level,
 324                                    xoffset, yoffset, x, y, width, height);
 325    }
 326 }
 327
 328
 329 void
 330 intelInitTextureCopyImageFuncs(struct dd_function_table *functions)
 331 {
 332    functions->CopyTexImage1D = intelCopyTexImage1D;
 333    functions->CopyTexImage2D = intelCopyTexImage2D;
 334    functions->CopyTexSubImage1D = intelCopyTexSubImage1D;
 335    functions->CopyTexSubImage2D = intelCopyTexSubImage2D;
 336 }