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
  34 #include "drivers/common/meta.h"
  35
  36 #include "intel_screen.h"
  37 #include "intel_context.h"
  38 #include "intel_batchbuffer.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       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    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    return GL_TRUE;
 174 }
 175
 176
 177 static void
 178 intelCopyTexImage1D(GLcontext * ctx, GLenum target, GLint level,
 179                     GLenum internalFormat,
 180                     GLint x, GLint y, GLsizei width, GLint border)
 181 {
 182    struct gl_texture_unit *texUnit =
 183       &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
 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    _mesa_meta_CopyTexImage1D(ctx, target, level, internalFormat, x, y,
 220                              width, border);
 221 }
 222
 223
 224 static void
 225 intelCopyTexImage2D(GLcontext * ctx, GLenum target, GLint level,
 226                     GLenum internalFormat,
 227                     GLint x, GLint y, GLsizei width, GLsizei height,
 228                     GLint border)
 229 {
 230    struct gl_texture_unit *texUnit =
 231       &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
 232    struct gl_texture_object *texObj =
 233       _mesa_select_tex_object(ctx, texUnit, target);
 234    struct gl_texture_image *texImage =
 235       _mesa_select_tex_image(ctx, texObj, target, level);
 236    int srcx, srcy, dstx, dsty;
 237
 238    if (border)
 239       goto fail;
 240
 241    /* Setup or redefine the texture object, mipmap tree and texture
 242     * image.  Don't populate yet.
 243     */
 244    ctx->Driver.TexImage2D(ctx, target, level, internalFormat,
 245                           width, height, border,
 246                           GL_RGBA, CHAN_TYPE, NULL,
 247                           &ctx->DefaultPacking, texObj, texImage);
 248
 249    srcx = x;
 250    srcy = y;
 251    dstx = 0;
 252    dsty = 0;
 253    if (!_mesa_clip_copytexsubimage(ctx,
 254                                    &dstx, &dsty,
 255                                    &srcx, &srcy,
 256                                    &width, &height))
 257       return;
 258
 259    if (!do_copy_texsubimage(intel_context(ctx), target,
 260                             intel_texture_image(texImage),
 261                             internalFormat, 0, 0, x, y, width, height))
 262       goto fail;
 263
 264    return;
 265
 266  fail:
 267    _mesa_meta_CopyTexImage2D(ctx, target, level, internalFormat, x, y,
 268                              width, height, border);
 269 }
 270
 271
 272 static void
 273 intelCopyTexSubImage1D(GLcontext * ctx, GLenum target, GLint level,
 274                        GLint xoffset, GLint x, GLint y, GLsizei width)
 275 {
 276    struct gl_texture_unit *texUnit =
 277       &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
 278    struct gl_texture_object *texObj =
 279       _mesa_select_tex_object(ctx, texUnit, target);
 280    struct gl_texture_image *texImage =
 281       _mesa_select_tex_image(ctx, texObj, target, level);
 282    GLenum internalFormat = texImage->InternalFormat;
 283
 284    /* XXX need to check <border> as in above function? */
 285
 286    /* Need to check texture is compatible with source format.
 287     */
 288
 289    if (!do_copy_texsubimage(intel_context(ctx), target,
 290                             intel_texture_image(texImage),
 291                             internalFormat, xoffset, 0, x, y, width, 1)) {
 292       _mesa_meta_CopyTexSubImage1D(ctx, target, level, xoffset, x, y, width);
 293    }
 294 }
 295
 296
 297 static void
 298 intelCopyTexSubImage2D(GLcontext * ctx, GLenum target, GLint level,
 299                        GLint xoffset, GLint yoffset,
 300                        GLint x, GLint y, GLsizei width, GLsizei height)
 301 {
 302    struct gl_texture_unit *texUnit =
 303       &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
 304    struct gl_texture_object *texObj =
 305       _mesa_select_tex_object(ctx, texUnit, target);
 306    struct gl_texture_image *texImage =
 307       _mesa_select_tex_image(ctx, texObj, target, level);
 308    GLenum internalFormat = texImage->InternalFormat;
 309
 310    /* Need to check texture is compatible with source format.
 311     */
 312
 313    if (!do_copy_texsubimage(intel_context(ctx), target,
 314                             intel_texture_image(texImage),
 315                             internalFormat,
 316                             xoffset, yoffset, x, y, width, height)) {
 317
 318       DBG("%s - fallback to _mesa_meta_CopyTexSubImage2D\n", __FUNCTION__);
 319
 320       _mesa_meta_CopyTexSubImage2D(ctx, target, level,
 321                                    xoffset, yoffset, x, y, width, height);
 322    }
 323 }
 324
 325
 326 void
 327 intelInitTextureCopyImageFuncs(struct dd_function_table *functions)
 328 {
 329    functions->CopyTexImage1D = intelCopyTexImage1D;
 330    functions->CopyTexImage2D = intelCopyTexImage2D;
 331    functions->CopyTexSubImage1D = intelCopyTexSubImage1D;
 332    functions->CopyTexSubImage2D = intelCopyTexSubImage2D;
 333 }