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       return intel_readbuf_region(intel);
  78    default:
  79       return NULL;
  80    }
  81 }
  82
  83
  84 static GLboolean
  85 do_copy_texsubimage(struct intel_context *intel,
  86                     GLenum target,
  87                     struct intel_texture_image *intelImage,
  88                     GLenum internalFormat,
  89                     GLint dstx, GLint dsty,
  90                     GLint x, GLint y, GLsizei width, GLsizei height)
  91 {
  92    GLcontext *ctx = &intel->ctx;
  93    struct gl_texture_object *texObj = intelImage->base.TexObject;
  94    const struct intel_region *src =
  95       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    LOCK_HARDWARE(intel);
 113    {
 114       drm_intel_bo *dst_bo = intel_region_buffer(intel,
 115                                                  intelImage->mt->region,
 116                                                  INTEL_WRITE_PART);
 117       GLuint image_offset = intel_miptree_image_offset(intelImage->mt,
 118                                                        intelImage->face,
 119                                                        intelImage->level);
 120       const GLint orig_x = x;
 121       const GLint orig_y = y;
 122       GLshort src_pitch;
 123
 124       /* Update dst for clipped src.  Need to also clip the source rect. */
 125       dstx += x - orig_x;
 126       dsty += y - orig_y;
 127
 128       /* Can't blit to tiled buffers with non-tile-aligned offset. */
 129       if (intelImage->mt->region->tiling != I915_TILING_NONE &&
 130           (image_offset & 4095) != 0) {
 131          UNLOCK_HARDWARE(intel);
 132          return GL_FALSE;
 133       }
 134
 135       if (ctx->ReadBuffer->Name == 0) {
 136          /* reading from a window, adjust x, y */
 137          __DRIdrawablePrivate *dPriv = intel->driDrawable;
 138          y = dPriv->y + (dPriv->h - (y + height));
 139          x += dPriv->x;
 140
 141          /* Invert the data coming from the source rectangle due to GL
 142           * and hardware disagreeing on where y=0 is.
 143           *
 144           * It appears that our offsets and pitches get mangled
 145           * appropriately by the hardware, and we don't need to adjust them
 146           * on our own.
 147           */
 148          src_pitch = -src->pitch;
 149       } else {
 150          /* reading from a FBO, y is already oriented the way we like */
 151          src_pitch = src->pitch;
 152       }
 153
 154       if (!intelEmitCopyBlit(intel,
 155                              intelImage->mt->cpp,
 156                              src_pitch,
 157                              src->buffer,
 158                              0,
 159                              src->tiling,
 160                              intelImage->mt->pitch,
 161                              dst_bo,
 162                              image_offset,
 163                              intelImage->mt->region->tiling,
 164                              x, y, dstx, dsty, width, height,
 165                              GL_COPY)) {
 166          UNLOCK_HARDWARE(intel);
 167          return GL_FALSE;
 168       }
 169    }
 170
 171    UNLOCK_HARDWARE(intel);
 172
 173    /* GL_SGIS_generate_mipmap */
 174    if (intelImage->level == texObj->BaseLevel && texObj->GenerateMipmap) {
 175       intel_generate_mipmap(ctx, target, texObj);
 176    }
 177
 178    return GL_TRUE;
 179 }
 180
 181
 182 static void
 183 intelCopyTexImage1D(GLcontext * ctx, GLenum target, GLint level,
 184                     GLenum internalFormat,
 185                     GLint x, GLint y, GLsizei width, GLint border)
 186 {
 187    struct gl_texture_unit *texUnit =
 188       &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
 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    _swrast_copy_teximage1d(ctx, target, level, internalFormat, x, y,
 225                            width, border);
 226 }
 227
 228
 229 static void
 230 intelCopyTexImage2D(GLcontext * ctx, GLenum target, GLint level,
 231                     GLenum internalFormat,
 232                     GLint x, GLint y, GLsizei width, GLsizei height,
 233                     GLint border)
 234 {
 235    struct gl_texture_unit *texUnit =
 236       &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
 237    struct gl_texture_object *texObj =
 238       _mesa_select_tex_object(ctx, texUnit, target);
 239    struct gl_texture_image *texImage =
 240       _mesa_select_tex_image(ctx, texObj, target, level);
 241    int srcx, srcy, dstx, dsty;
 242
 243    if (border)
 244       goto fail;
 245
 246    /* Setup or redefine the texture object, mipmap tree and texture
 247     * image.  Don't populate yet.
 248     */
 249    ctx->Driver.TexImage2D(ctx, target, level, internalFormat,
 250                           width, height, border,
 251                           GL_RGBA, CHAN_TYPE, NULL,
 252                           &ctx->DefaultPacking, texObj, texImage);
 253
 254    srcx = x;
 255    srcy = y;
 256    dstx = 0;
 257    dsty = 0;
 258    if (!_mesa_clip_copytexsubimage(ctx,
 259                                    &dstx, &dsty,
 260                                    &srcx, &srcy,
 261                                    &width, &height))
 262       return;
 263
 264    if (!do_copy_texsubimage(intel_context(ctx), target,
 265                             intel_texture_image(texImage),
 266                             internalFormat, 0, 0, x, y, width, height))
 267       goto fail;
 268
 269    return;
 270
 271  fail:
 272    _swrast_copy_teximage2d(ctx, target, level, internalFormat, x, y,
 273                            width, height, border);
 274 }
 275
 276
 277 static void
 278 intelCopyTexSubImage1D(GLcontext * ctx, GLenum target, GLint level,
 279                        GLint xoffset, GLint x, GLint y, GLsizei width)
 280 {
 281    struct gl_texture_unit *texUnit =
 282       &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
 283    struct gl_texture_object *texObj =
 284       _mesa_select_tex_object(ctx, texUnit, target);
 285    struct gl_texture_image *texImage =
 286       _mesa_select_tex_image(ctx, texObj, target, level);
 287    GLenum internalFormat = texImage->InternalFormat;
 288
 289    /* XXX need to check <border> as in above function? */
 290
 291    /* Need to check texture is compatible with source format.
 292     */
 293
 294    if (!do_copy_texsubimage(intel_context(ctx), target,
 295                             intel_texture_image(texImage),
 296                             internalFormat, xoffset, 0, x, y, width, 1)) {
 297       _swrast_copy_texsubimage1d(ctx, target, level, xoffset, x, y, width);
 298    }
 299 }
 300
 301
 302 static void
 303 intelCopyTexSubImage2D(GLcontext * ctx, GLenum target, GLint level,
 304                        GLint xoffset, GLint yoffset,
 305                        GLint x, GLint y, GLsizei width, GLsizei height)
 306 {
 307    struct gl_texture_unit *texUnit =
 308       &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
 309    struct gl_texture_object *texObj =
 310       _mesa_select_tex_object(ctx, texUnit, target);
 311    struct gl_texture_image *texImage =
 312       _mesa_select_tex_image(ctx, texObj, target, level);
 313    GLenum internalFormat = texImage->InternalFormat;
 314
 315    /* Need to check texture is compatible with source format.
 316     */
 317
 318    if (!do_copy_texsubimage(intel_context(ctx), target,
 319                             intel_texture_image(texImage),
 320                             internalFormat,
 321                             xoffset, yoffset, x, y, width, height)) {
 322
 323       DBG("%s - fallback to swrast\n", __FUNCTION__);
 324
 325       _swrast_copy_texsubimage2d(ctx, target, level,
 326                                  xoffset, yoffset, x, y, width, height);
 327    }
 328 }
 329
 330
 331 void
 332 intelInitTextureCopyImageFuncs(struct dd_function_table *functions)
 333 {
 334    functions->CopyTexImage1D = intelCopyTexImage1D;
 335    functions->CopyTexImage2D = intelCopyTexImage2D;
 336    functions->CopyTexSubImage1D = intelCopyTexSubImage1D;
 337    functions->CopyTexSubImage2D = intelCopyTexSubImage2D;
 338 }