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       GLuint image_offset = intel_miptree_image_offset(intelImage->mt,
 119                                                        intelImage->face,
 120                                                        intelImage->level);
 121       const GLint orig_x = x;
 122       const GLint orig_y = y;
 123       GLshort src_pitch;
 124
 125       /* Update dst for clipped src.  Need to also clip the source rect. */
 126       dstx += x - orig_x;
 127       dsty += y - orig_y;
 128
 129       /* Can't blit to tiled buffers with non-tile-aligned offset. */
 130       if (intelImage->mt->region->tiling != I915_TILING_NONE &&
 131           (image_offset & 4095) != 0) {
 132          UNLOCK_HARDWARE(intel);
 133          return GL_FALSE;
 134       }
 135
 136       if (ctx->ReadBuffer->Name == 0) {
 137          /* reading from a window, adjust x, y */
 138          __DRIdrawablePrivate *dPriv = intel->driDrawable;
 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       if (!intelEmitCopyBlit(intel,
 156                              intelImage->mt->cpp,
 157                              src_pitch,
 158                              src->buffer,
 159                              0,
 160                              src->tiling,
 161                              intelImage->mt->pitch,
 162                              dst_bo,
 163                              image_offset,
 164                              intelImage->mt->region->tiling,
 165                              x, y, dstx, dsty, width, height,
 166                              GL_COPY)) {
 167          UNLOCK_HARDWARE(intel);
 168          return GL_FALSE;
 169       }
 170    }
 171
 172    UNLOCK_HARDWARE(intel);
 173
 174    /* GL_SGIS_generate_mipmap */
 175    if (intelImage->level == texObj->BaseLevel && texObj->GenerateMipmap) {
 176       intel_generate_mipmap(ctx, target, texObj);
 177    }
 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 =
 189       &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
 190    struct gl_texture_object *texObj =
 191       _mesa_select_tex_object(ctx, texUnit, target);
 192    struct gl_texture_image *texImage =
 193       _mesa_select_tex_image(ctx, texObj, target, level);
 194    int srcx, srcy, dstx, dsty, height;
 195
 196    if (border)
 197       goto fail;
 198
 199    /* Setup or redefine the texture object, mipmap tree and texture
 200     * image.  Don't populate yet.
 201     */
 202    ctx->Driver.TexImage1D(ctx, target, level, internalFormat,
 203                           width, border,
 204                           GL_RGBA, CHAN_TYPE, NULL,
 205                           &ctx->DefaultPacking, texObj, texImage);
 206    srcx = x;
 207    srcy = y;
 208    dstx = 0;
 209    dsty = 0;
 210    height = 1;
 211    if (!_mesa_clip_copytexsubimage(ctx,
 212                                    &dstx, &dsty,
 213                                    &srcx, &srcy,
 214                                    &width, &height))
 215       return;
 216
 217    if (!do_copy_texsubimage(intel_context(ctx), target,
 218                             intel_texture_image(texImage),
 219                             internalFormat, 0, 0, x, y, width, height))
 220       goto fail;
 221
 222    return;
 223
 224  fail:
 225    _swrast_copy_teximage1d(ctx, target, level, internalFormat, x, y,
 226                            width, border);
 227 }
 228
 229
 230 static void
 231 intelCopyTexImage2D(GLcontext * ctx, GLenum target, GLint level,
 232                     GLenum internalFormat,
 233                     GLint x, GLint y, GLsizei width, GLsizei height,
 234                     GLint border)
 235 {
 236    struct gl_texture_unit *texUnit =
 237       &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
 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, CHAN_TYPE, 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    _swrast_copy_teximage2d(ctx, target, level, internalFormat, x, y,
 274                            width, height, border);
 275 }
 276
 277
 278 static void
 279 intelCopyTexSubImage1D(GLcontext * ctx, GLenum target, GLint level,
 280                        GLint xoffset, GLint x, GLint y, GLsizei width)
 281 {
 282    struct gl_texture_unit *texUnit =
 283       &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
 284    struct gl_texture_object *texObj =
 285       _mesa_select_tex_object(ctx, texUnit, target);
 286    struct gl_texture_image *texImage =
 287       _mesa_select_tex_image(ctx, texObj, target, level);
 288    GLenum internalFormat = texImage->InternalFormat;
 289
 290    /* XXX need to check <border> as in above function? */
 291
 292    /* Need to check texture is compatible with source format.
 293     */
 294
 295    if (!do_copy_texsubimage(intel_context(ctx), target,
 296                             intel_texture_image(texImage),
 297                             internalFormat, xoffset, 0, x, y, width, 1)) {
 298       _swrast_copy_texsubimage1d(ctx, target, level, xoffset, x, y, width);
 299    }
 300 }
 301
 302
 303 static void
 304 intelCopyTexSubImage2D(GLcontext * ctx, GLenum target, GLint level,
 305                        GLint xoffset, GLint yoffset,
 306                        GLint x, GLint y, GLsizei width, GLsizei height)
 307 {
 308    struct gl_texture_unit *texUnit =
 309       &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
 310    struct gl_texture_object *texObj =
 311       _mesa_select_tex_object(ctx, texUnit, target);
 312    struct gl_texture_image *texImage =
 313       _mesa_select_tex_image(ctx, texObj, target, level);
 314    GLenum internalFormat = texImage->InternalFormat;
 315
 316    /* Need to check texture is compatible with source format.
 317     */
 318
 319    if (!do_copy_texsubimage(intel_context(ctx), target,
 320                             intel_texture_image(texImage),
 321                             internalFormat,
 322                             xoffset, yoffset, x, y, width, height)) {
 323
 324       DBG("%s - fallback to swrast\n", __FUNCTION__);
 325
 326       _swrast_copy_texsubimage2d(ctx, target, level,
 327                                  xoffset, yoffset, x, y, width, height);
 328    }
 329 }
 330
 331
 332 void
 333 intelInitTextureCopyImageFuncs(struct dd_function_table *functions)
 334 {
 335    functions->CopyTexImage1D = intelCopyTexImage1D;
 336    functions->CopyTexImage2D = intelCopyTexImage2D;
 337    functions->CopyTexSubImage1D = intelCopyTexSubImage1D;
 338    functions->CopyTexSubImage2D = intelCopyTexSubImage2D;
 339 }