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_batchbuffer.h"
  40 #include "intel_buffers.h"
  41 #include "intel_mipmap_tree.h"
  42 #include "intel_regions.h"
  43 #include "intel_fbo.h"
  44 #include "intel_tex.h"
  45 #include "intel_blit.h"
  46
  47 #define FILE_DEBUG_FLAG DEBUG_TEXTURE
  48
  49 /**
  50  * Get the intel_region which is the source for any glCopyTex[Sub]Image call.
  51  *
  52  * Do the best we can using the blitter.  A future project is to use
  53  * the texture engine and fragment programs for these copies.
  54  */
  55 static const struct intel_region *
  56 get_teximage_source(struct intel_context *intel, GLenum internalFormat)
  57 {
  58    struct intel_renderbuffer *irb;
  59
  60    DBG("%s %s\n", __FUNCTION__,
  61        _mesa_lookup_enum_by_nr(internalFormat));
  62
  63    switch (internalFormat) {
  64    case GL_DEPTH_COMPONENT:
  65    case GL_DEPTH_COMPONENT16:
  66       irb = intel_get_renderbuffer(intel->ctx.ReadBuffer, BUFFER_DEPTH);
  67       if (irb && irb->region && irb->region->cpp == 2)
  68          return irb->region;
  69       return NULL;
  70    case GL_DEPTH24_STENCIL8_EXT:
  71    case GL_DEPTH_STENCIL_EXT:
  72       irb = intel_get_renderbuffer(intel->ctx.ReadBuffer, BUFFER_DEPTH);
  73       if (irb && irb->region && irb->region->cpp == 4)
  74          return irb->region;
  75       return NULL;
  76    case GL_RGBA:
  77    case GL_RGBA8:
  78    case GL_RGB:
  79    case GL_RGB8:
  80       return intel_readbuf_region(intel);
  81    default:
  82       return NULL;
  83    }
  84 }
  85
  86
  87 static GLboolean
  88 do_copy_texsubimage(struct intel_context *intel,
  89                     GLenum target,
  90                     struct intel_texture_image *intelImage,
  91                     GLenum internalFormat,
  92                     GLint dstx, GLint dsty,
  93                     GLint x, GLint y, GLsizei width, GLsizei height)
  94 {
  95    GLcontext *ctx = &intel->ctx;
  96    const struct intel_region *src = 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       /* get dest x/y in destination texture */
 124       intel_miptree_get_image_offset(intelImage->mt,
 125                                      intelImage->level,
 126                                      intelImage->face,
 127                                      0,
 128                                      &image_x, &image_y);
 129       /* Update dst for clipped src.  Need to also clip the source rect. */
 130       dstx += x - orig_x;
 131       dsty += y - orig_y;
 132
 133       /* Can't blit to tiled buffers with non-tile-aligned offset. */
 134       if (intelImage->mt->region->tiling == I915_TILING_Y) {
 135          UNLOCK_HARDWARE(intel);
 136          return GL_FALSE;
 137       }
 138
 139       if (ctx->ReadBuffer->Name == 0) {
 140          /* reading from a window, adjust x, y */
 141          const __DRIdrawablePrivate *dPriv = intel->driReadDrawable;
 142          y = dPriv->y + (dPriv->h - (y + height));
 143          x += dPriv->x;
 144
 145          /* Invert the data coming from the source rectangle due to GL
 146           * and hardware disagreeing on where y=0 is.
 147           *
 148           * It appears that our offsets and pitches get mangled
 149           * appropriately by the hardware, and we don't need to adjust them
 150           * on our own.
 151           */
 152          src_pitch = -src->pitch;
 153       } else {
 154          /* reading from a FBO, y is already oriented the way we like */
 155          src_pitch = src->pitch;
 156       }
 157
 158       /* blit from src buffer to texture */
 159       if (!intelEmitCopyBlit(intel,
 160                              intelImage->mt->cpp,
 161                              src_pitch,
 162                              src->buffer,
 163                              src->draw_offset,
 164                              src->tiling,
 165                              intelImage->mt->pitch,
 166                              dst_bo,
 167                              0,
 168                              intelImage->mt->region->tiling,
 169                              x, y, image_x + dstx, image_y + dsty,
 170                              width, height,
 171                              GL_COPY)) {
 172          UNLOCK_HARDWARE(intel);
 173          return GL_FALSE;
 174       }
 175    }
 176
 177    UNLOCK_HARDWARE(intel);
 178
 179    return GL_TRUE;
 180 }
 181
 182
 183 static void
 184 intelCopyTexImage1D(GLcontext * ctx, GLenum target, GLint level,
 185                     GLenum internalFormat,
 186                     GLint x, GLint y, GLsizei width, GLint border)
 187 {
 188    struct gl_texture_unit *texUnit = _mesa_get_current_tex_unit(ctx);
 189    struct gl_texture_object *texObj =
 190       _mesa_select_tex_object(ctx, texUnit, target);
 191    struct gl_texture_image *texImage =
 192       _mesa_select_tex_image(ctx, texObj, target, level);
 193    int srcx, srcy, dstx, dsty, height;
 194
 195    if (border)
 196       goto fail;
 197
 198    /* Setup or redefine the texture object, mipmap tree and texture
 199     * image.  Don't populate yet.
 200     */
 201    ctx->Driver.TexImage1D(ctx, target, level, internalFormat,
 202                           width, border,
 203                           GL_RGBA, CHAN_TYPE, NULL,
 204                           &ctx->DefaultPacking, texObj, texImage);
 205    srcx = x;
 206    srcy = y;
 207    dstx = 0;
 208    dsty = 0;
 209    height = 1;
 210    if (!_mesa_clip_copytexsubimage(ctx,
 211                                    &dstx, &dsty,
 212                                    &srcx, &srcy,
 213                                    &width, &height))
 214       return;
 215
 216    if (!do_copy_texsubimage(intel_context(ctx), target,
 217                             intel_texture_image(texImage),
 218                             internalFormat, 0, 0, x, y, width, height))
 219       goto fail;
 220
 221    return;
 222
 223  fail:
 224    if (INTEL_DEBUG & DEBUG_FALLBACKS)
 225       fprintf(stderr, "%s - fallback to swrast\n", __FUNCTION__);
 226    _mesa_meta_CopyTexImage1D(ctx, target, level, internalFormat, x, y,
 227                              width, border);
 228 }
 229
 230
 231 static void
 232 intelCopyTexImage2D(GLcontext * ctx, GLenum target, GLint level,
 233                     GLenum internalFormat,
 234                     GLint x, GLint y, GLsizei width, GLsizei height,
 235                     GLint border)
 236 {
 237    struct gl_texture_unit *texUnit = _mesa_get_current_tex_unit(ctx);
 238    struct gl_texture_object *texObj =
 239       _mesa_select_tex_object(ctx, texUnit, target);
 240    struct gl_texture_image *texImage =
 241       _mesa_select_tex_image(ctx, texObj, target, level);
 242    int srcx, srcy, dstx, dsty;
 243
 244    if (border)
 245       goto fail;
 246
 247    /* Setup or redefine the texture object, mipmap tree and texture
 248     * image.  Don't populate yet.
 249     */
 250    ctx->Driver.TexImage2D(ctx, target, level, internalFormat,
 251                           width, height, border,
 252                           GL_RGBA, GL_UNSIGNED_BYTE, NULL,
 253                           &ctx->DefaultPacking, texObj, texImage);
 254
 255    srcx = x;
 256    srcy = y;
 257    dstx = 0;
 258    dsty = 0;
 259    if (!_mesa_clip_copytexsubimage(ctx,
 260                                    &dstx, &dsty,
 261                                    &srcx, &srcy,
 262                                    &width, &height))
 263       return;
 264
 265    if (!do_copy_texsubimage(intel_context(ctx), target,
 266                             intel_texture_image(texImage),
 267                             internalFormat, 0, 0, x, y, width, height))
 268       goto fail;
 269
 270    return;
 271
 272  fail:
 273    if (INTEL_DEBUG & DEBUG_FALLBACKS)
 274       fprintf(stderr, "%s - fallback to swrast\n", __FUNCTION__);
 275    _mesa_meta_CopyTexImage2D(ctx, target, level, internalFormat, x, y,
 276                              width, height, border);
 277 }
 278
 279
 280 static void
 281 intelCopyTexSubImage1D(GLcontext * ctx, GLenum target, GLint level,
 282                        GLint xoffset, GLint x, GLint y, GLsizei width)
 283 {
 284    struct gl_texture_unit *texUnit = _mesa_get_current_tex_unit(ctx);
 285    struct gl_texture_object *texObj =
 286       _mesa_select_tex_object(ctx, texUnit, target);
 287    struct gl_texture_image *texImage =
 288       _mesa_select_tex_image(ctx, texObj, target, level);
 289    GLenum internalFormat = texImage->InternalFormat;
 290
 291    /* XXX need to check <border> as in above function? */
 292
 293    /* Need to check texture is compatible with source format.
 294     */
 295
 296    if (!do_copy_texsubimage(intel_context(ctx), target,
 297                             intel_texture_image(texImage),
 298                             internalFormat, xoffset, 0, x, y, width, 1)) {
 299       if (INTEL_DEBUG & DEBUG_FALLBACKS)
 300          fprintf(stderr, "%s - fallback to swrast\n", __FUNCTION__);
 301       _mesa_meta_CopyTexSubImage1D(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 = _mesa_get_current_tex_unit(ctx);
 312    struct gl_texture_object *texObj =
 313       _mesa_select_tex_object(ctx, texUnit, target);
 314    struct gl_texture_image *texImage =
 315       _mesa_select_tex_image(ctx, texObj, target, level);
 316    GLenum internalFormat = texImage->InternalFormat;
 317
 318    /* Need to check texture is compatible with source format.
 319     */
 320
 321    if (!do_copy_texsubimage(intel_context(ctx), target,
 322                             intel_texture_image(texImage),
 323                             internalFormat,
 324                             xoffset, yoffset, x, y, width, height)) {
 325
 326       if (INTEL_DEBUG & DEBUG_FALLBACKS)
 327          fprintf(stderr, "%s - fallback to swrast\n", __FUNCTION__);
 328       _mesa_meta_CopyTexSubImage2D(ctx, target, level,
 329                                    xoffset, yoffset, x, y, width, height);
 330    }
 331 }
 332
 333
 334 void
 335 intelInitTextureCopyImageFuncs(struct dd_function_table *functions)
 336 {
 337    functions->CopyTexImage1D = intelCopyTexImage1D;
 338    functions->CopyTexImage2D = intelCopyTexImage2D;
 339    functions->CopyTexSubImage1D = intelCopyTexSubImage1D;
 340    functions->CopyTexSubImage2D = intelCopyTexSubImage2D;
 341 }