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    const struct intel_region *src =
  94       get_teximage_source(intel, internalFormat);
  95
  96    if (!intelImage->mt || !src) {
  97       if (INTEL_DEBUG & DEBUG_FALLBACKS)
  98          fprintf(stderr, "%s fail %p %p (0x%08x)\n",
  99                  __FUNCTION__, intelImage->mt, src, internalFormat);
 100       return GL_FALSE;
 101    }
 102
 103    if (intelImage->mt->cpp != src->cpp) {
 104       if (INTEL_DEBUG & DEBUG_FALLBACKS)
 105          fprintf(stderr, "%s fail %d vs %d cpp\n",
 106                  __FUNCTION__, intelImage->mt->cpp, src->cpp);
 107       return GL_FALSE;
 108    }
 109
 110    intelFlush(ctx);
 111    LOCK_HARDWARE(intel);
 112    {
 113       drm_intel_bo *dst_bo = intel_region_buffer(intel,
 114                                                  intelImage->mt->region,
 115                                                  INTEL_WRITE_PART);
 116       GLuint image_offset = intel_miptree_image_offset(intelImage->mt,
 117                                                        intelImage->face,
 118                                                        intelImage->level);
 119       const GLint orig_x = x;
 120       const GLint orig_y = y;
 121       GLshort src_pitch;
 122
 123       /* Update dst for clipped src.  Need to also clip the source rect. */
 124       dstx += x - orig_x;
 125       dsty += y - orig_y;
 126
 127       /* Can't blit to tiled buffers with non-tile-aligned offset. */
 128       if (intelImage->mt->region->tiling != I915_TILING_NONE &&
 129           (image_offset & 4095) != 0) {
 130          UNLOCK_HARDWARE(intel);
 131          return GL_FALSE;
 132       }
 133
 134       if (ctx->ReadBuffer->Name == 0) {
 135          /* reading from a window, adjust x, y */
 136          __DRIdrawablePrivate *dPriv = intel->driDrawable;
 137          y = dPriv->y + (dPriv->h - (y + height));
 138          x += dPriv->x;
 139
 140          /* Invert the data coming from the source rectangle due to GL
 141           * and hardware disagreeing on where y=0 is.
 142           *
 143           * It appears that our offsets and pitches get mangled
 144           * appropriately by the hardware, and we don't need to adjust them
 145           * on our own.
 146           */
 147          src_pitch = -src->pitch;
 148       } else {
 149          /* reading from a FBO, y is already oriented the way we like */
 150          src_pitch = src->pitch;
 151       }
 152
 153       if (!intelEmitCopyBlit(intel,
 154                              intelImage->mt->cpp,
 155                              src_pitch,
 156                              src->buffer,
 157                              0,
 158                              src->tiling,
 159                              intelImage->mt->pitch,
 160                              dst_bo,
 161                              image_offset,
 162                              intelImage->mt->region->tiling,
 163                              x, y, dstx, dsty, width, height,
 164                              GL_COPY)) {
 165          UNLOCK_HARDWARE(intel);
 166          return GL_FALSE;
 167       }
 168    }
 169
 170    UNLOCK_HARDWARE(intel);
 171
 172    return GL_TRUE;
 173 }
 174
 175
 176 static void
 177 intelCopyTexImage1D(GLcontext * ctx, GLenum target, GLint level,
 178                     GLenum internalFormat,
 179                     GLint x, GLint y, GLsizei width, GLint border)
 180 {
 181    struct gl_texture_unit *texUnit =
 182       &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
 183    struct gl_texture_object *texObj =
 184       _mesa_select_tex_object(ctx, texUnit, target);
 185    struct gl_texture_image *texImage =
 186       _mesa_select_tex_image(ctx, texObj, target, level);
 187    int srcx, srcy, dstx, dsty, height;
 188
 189    if (border)
 190       goto fail;
 191
 192    /* Setup or redefine the texture object, mipmap tree and texture
 193     * image.  Don't populate yet.
 194     */
 195    ctx->Driver.TexImage1D(ctx, target, level, internalFormat,
 196                           width, border,
 197                           GL_RGBA, CHAN_TYPE, NULL,
 198                           &ctx->DefaultPacking, texObj, texImage);
 199    srcx = x;
 200    srcy = y;
 201    dstx = 0;
 202    dsty = 0;
 203    height = 1;
 204    if (!_mesa_clip_copytexsubimage(ctx,
 205                                    &dstx, &dsty,
 206                                    &srcx, &srcy,
 207                                    &width, &height))
 208       return;
 209
 210    if (!do_copy_texsubimage(intel_context(ctx), target,
 211                             intel_texture_image(texImage),
 212                             internalFormat, 0, 0, x, y, width, height))
 213       goto fail;
 214
 215    return;
 216
 217  fail:
 218    _swrast_copy_teximage1d(ctx, target, level, internalFormat, x, y,
 219                            width, border);
 220 }
 221
 222
 223 static void
 224 intelCopyTexImage2D(GLcontext * ctx, GLenum target, GLint level,
 225                     GLenum internalFormat,
 226                     GLint x, GLint y, GLsizei width, GLsizei height,
 227                     GLint border)
 228 {
 229    struct gl_texture_unit *texUnit =
 230       &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
 231    struct gl_texture_object *texObj =
 232       _mesa_select_tex_object(ctx, texUnit, target);
 233    struct gl_texture_image *texImage =
 234       _mesa_select_tex_image(ctx, texObj, target, level);
 235    int srcx, srcy, dstx, dsty;
 236
 237    if (border)
 238       goto fail;
 239
 240    /* Setup or redefine the texture object, mipmap tree and texture
 241     * image.  Don't populate yet.
 242     */
 243    ctx->Driver.TexImage2D(ctx, target, level, internalFormat,
 244                           width, height, border,
 245                           GL_RGBA, CHAN_TYPE, NULL,
 246                           &ctx->DefaultPacking, texObj, texImage);
 247
 248    srcx = x;
 249    srcy = y;
 250    dstx = 0;
 251    dsty = 0;
 252    if (!_mesa_clip_copytexsubimage(ctx,
 253                                    &dstx, &dsty,
 254                                    &srcx, &srcy,
 255                                    &width, &height))
 256       return;
 257
 258    if (!do_copy_texsubimage(intel_context(ctx), target,
 259                             intel_texture_image(texImage),
 260                             internalFormat, 0, 0, x, y, width, height))
 261       goto fail;
 262
 263    return;
 264
 265  fail:
 266    _swrast_copy_teximage2d(ctx, target, level, internalFormat, x, y,
 267                            width, height, border);
 268 }
 269
 270
 271 static void
 272 intelCopyTexSubImage1D(GLcontext * ctx, GLenum target, GLint level,
 273                        GLint xoffset, GLint x, GLint y, GLsizei width)
 274 {
 275    struct gl_texture_unit *texUnit =
 276       &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
 277    struct gl_texture_object *texObj =
 278       _mesa_select_tex_object(ctx, texUnit, target);
 279    struct gl_texture_image *texImage =
 280       _mesa_select_tex_image(ctx, texObj, target, level);
 281    GLenum internalFormat = texImage->InternalFormat;
 282
 283    /* XXX need to check <border> as in above function? */
 284
 285    /* Need to check texture is compatible with source format.
 286     */
 287
 288    if (!do_copy_texsubimage(intel_context(ctx), target,
 289                             intel_texture_image(texImage),
 290                             internalFormat, xoffset, 0, x, y, width, 1)) {
 291       _swrast_copy_texsubimage1d(ctx, target, level, xoffset, x, y, width);
 292    }
 293 }
 294
 295
 296 static void
 297 intelCopyTexSubImage2D(GLcontext * ctx, GLenum target, GLint level,
 298                        GLint xoffset, GLint yoffset,
 299                        GLint x, GLint y, GLsizei width, GLsizei height)
 300 {
 301    struct gl_texture_unit *texUnit =
 302       &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
 303    struct gl_texture_object *texObj =
 304       _mesa_select_tex_object(ctx, texUnit, target);
 305    struct gl_texture_image *texImage =
 306       _mesa_select_tex_image(ctx, texObj, target, level);
 307    GLenum internalFormat = texImage->InternalFormat;
 308
 309    /* Need to check texture is compatible with source format.
 310     */
 311
 312    if (!do_copy_texsubimage(intel_context(ctx), target,
 313                             intel_texture_image(texImage),
 314                             internalFormat,
 315                             xoffset, yoffset, x, y, width, height)) {
 316
 317       DBG("%s - fallback to swrast\n", __FUNCTION__);
 318
 319       _swrast_copy_texsubimage2d(ctx, target, level,
 320                                  xoffset, yoffset, x, y, width, height);
 321    }
 322 }
 323
 324
 325 void
 326 intelInitTextureCopyImageFuncs(struct dd_function_table *functions)
 327 {
 328    functions->CopyTexImage1D = intelCopyTexImage1D;
 329    functions->CopyTexImage2D = intelCopyTexImage2D;
 330    functions->CopyTexSubImage1D = intelCopyTexSubImage1D;
 331    functions->CopyTexSubImage2D = intelCopyTexSubImage2D;
 332 }