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    case GL_RGB8:
  79       return intel_readbuf_region(intel);
  80    default:
  81       return NULL;
  82    }
  83 }
  84
  85
  86 static GLboolean
  87 do_copy_texsubimage(struct intel_context *intel,
  88                     GLenum target,
  89                     struct intel_texture_image *intelImage,
  90                     GLenum internalFormat,
  91                     GLint dstx, GLint dsty,
  92                     GLint x, GLint y, GLsizei width, GLsizei height)
  93 {
  94    GLcontext *ctx = &intel->ctx;
  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       const GLint orig_x = x;
 119       const GLint orig_y = y;
 120       GLuint image_x, image_y;
 121       GLshort src_pitch;
 122
 123       intel_miptree_get_image_offset(intelImage->mt,
 124                                      intelImage->level,
 125                                      intelImage->face,
 126                                      0,
 127                                      &image_x, &image_y);
 128       /* Update dst for clipped src.  Need to also clip the source rect. */
 129       dstx += x - orig_x;
 130       dsty += y - orig_y;
 131
 132       /* Can't blit to tiled buffers with non-tile-aligned offset. */
 133       if (intelImage->mt->region->tiling == I915_TILING_Y) {
 134          UNLOCK_HARDWARE(intel);
 135          return GL_FALSE;
 136       }
 137
 138       if (ctx->ReadBuffer->Name == 0) {
 139          /* reading from a window, adjust x, y */
 140          const __DRIdrawablePrivate *dPriv = intel->driReadDrawable;
 141          y = dPriv->y + (dPriv->h - (y + height));
 142          x += dPriv->x;
 143
 144          /* Invert the data coming from the source rectangle due to GL
 145           * and hardware disagreeing on where y=0 is.
 146           *
 147           * It appears that our offsets and pitches get mangled
 148           * appropriately by the hardware, and we don't need to adjust them
 149           * on our own.
 150           */
 151          src_pitch = -src->pitch;
 152       } else {
 153          /* reading from a FBO, y is already oriented the way we like */
 154          src_pitch = src->pitch;
 155       }
 156
 157       if (!intelEmitCopyBlit(intel,
 158                              intelImage->mt->cpp,
 159                              src_pitch,
 160                              src->buffer,
 161                              0,
 162                              src->tiling,
 163                              intelImage->mt->pitch,
 164                              dst_bo,
 165                              0,
 166                              intelImage->mt->region->tiling,
 167                              x, y, image_x + dstx, image_y + dsty,
 168                              width, height,
 169                              GL_COPY)) {
 170          UNLOCK_HARDWARE(intel);
 171          return GL_FALSE;
 172       }
 173    }
 174
 175    UNLOCK_HARDWARE(intel);
 176
 177    return GL_TRUE;
 178 }
 179
 180
 181 static void
 182 intelCopyTexImage1D(GLcontext * ctx, GLenum target, GLint level,
 183                     GLenum internalFormat,
 184                     GLint x, GLint y, GLsizei width, GLint border)
 185 {
 186    struct gl_texture_unit *texUnit =
 187       &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
 188    struct gl_texture_object *texObj =
 189       _mesa_select_tex_object(ctx, texUnit, target);
 190    struct gl_texture_image *texImage =
 191       _mesa_select_tex_image(ctx, texObj, target, level);
 192    int srcx, srcy, dstx, dsty, height;
 193
 194    if (border)
 195       goto fail;
 196
 197    /* Setup or redefine the texture object, mipmap tree and texture
 198     * image.  Don't populate yet.
 199     */
 200    ctx->Driver.TexImage1D(ctx, target, level, internalFormat,
 201                           width, border,
 202                           GL_RGBA, CHAN_TYPE, NULL,
 203                           &ctx->DefaultPacking, texObj, texImage);
 204    srcx = x;
 205    srcy = y;
 206    dstx = 0;
 207    dsty = 0;
 208    height = 1;
 209    if (!_mesa_clip_copytexsubimage(ctx,
 210                                    &dstx, &dsty,
 211                                    &srcx, &srcy,
 212                                    &width, &height))
 213       return;
 214
 215    if (!do_copy_texsubimage(intel_context(ctx), target,
 216                             intel_texture_image(texImage),
 217                             internalFormat, 0, 0, x, y, width, height))
 218       goto fail;
 219
 220    return;
 221
 222  fail:
 223    _mesa_meta_CopyTexImage1D(ctx, target, level, internalFormat, x, y,
 224                              width, border);
 225 }
 226
 227
 228 static void
 229 intelCopyTexImage2D(GLcontext * ctx, GLenum target, GLint level,
 230                     GLenum internalFormat,
 231                     GLint x, GLint y, GLsizei width, GLsizei height,
 232                     GLint border)
 233 {
 234    struct gl_texture_unit *texUnit =
 235       &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
 236    struct gl_texture_object *texObj =
 237       _mesa_select_tex_object(ctx, texUnit, target);
 238    struct gl_texture_image *texImage =
 239       _mesa_select_tex_image(ctx, texObj, target, level);
 240    int srcx, srcy, dstx, dsty;
 241
 242    if (border)
 243       goto fail;
 244
 245    /* Setup or redefine the texture object, mipmap tree and texture
 246     * image.  Don't populate yet.
 247     */
 248    ctx->Driver.TexImage2D(ctx, target, level, internalFormat,
 249                           width, height, border,
 250                           GL_RGBA, CHAN_TYPE, NULL,
 251                           &ctx->DefaultPacking, texObj, texImage);
 252
 253    srcx = x;
 254    srcy = y;
 255    dstx = 0;
 256    dsty = 0;
 257    if (!_mesa_clip_copytexsubimage(ctx,
 258                                    &dstx, &dsty,
 259                                    &srcx, &srcy,
 260                                    &width, &height))
 261       return;
 262
 263    if (!do_copy_texsubimage(intel_context(ctx), target,
 264                             intel_texture_image(texImage),
 265                             internalFormat, 0, 0, x, y, width, height))
 266       goto fail;
 267
 268    return;
 269
 270  fail:
 271    _mesa_meta_CopyTexImage2D(ctx, target, level, internalFormat, x, y,
 272                              width, height, border);
 273 }
 274
 275
 276 static void
 277 intelCopyTexSubImage1D(GLcontext * ctx, GLenum target, GLint level,
 278                        GLint xoffset, GLint x, GLint y, GLsizei width)
 279 {
 280    struct gl_texture_unit *texUnit =
 281       &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
 282    struct gl_texture_object *texObj =
 283       _mesa_select_tex_object(ctx, texUnit, target);
 284    struct gl_texture_image *texImage =
 285       _mesa_select_tex_image(ctx, texObj, target, level);
 286    GLenum internalFormat = texImage->InternalFormat;
 287
 288    /* XXX need to check <border> as in above function? */
 289
 290    /* Need to check texture is compatible with source format.
 291     */
 292
 293    if (!do_copy_texsubimage(intel_context(ctx), target,
 294                             intel_texture_image(texImage),
 295                             internalFormat, xoffset, 0, x, y, width, 1)) {
 296       _mesa_meta_CopyTexSubImage1D(ctx, target, level, xoffset, x, y, width);
 297    }
 298 }
 299
 300
 301 static void
 302 intelCopyTexSubImage2D(GLcontext * ctx, GLenum target, GLint level,
 303                        GLint xoffset, GLint yoffset,
 304                        GLint x, GLint y, GLsizei width, GLsizei height)
 305 {
 306    struct gl_texture_unit *texUnit =
 307       &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
 308    struct gl_texture_object *texObj =
 309       _mesa_select_tex_object(ctx, texUnit, target);
 310    struct gl_texture_image *texImage =
 311       _mesa_select_tex_image(ctx, texObj, target, level);
 312    GLenum internalFormat = texImage->InternalFormat;
 313
 314    /* Need to check texture is compatible with source format.
 315     */
 316
 317    if (!do_copy_texsubimage(intel_context(ctx), target,
 318                             intel_texture_image(texImage),
 319                             internalFormat,
 320                             xoffset, yoffset, x, y, width, height)) {
 321
 322       DBG("%s - fallback to _mesa_meta_CopyTexSubImage2D\n", __FUNCTION__);
 323
 324       _mesa_meta_CopyTexSubImage2D(ctx, target, level,
 325                                    xoffset, yoffset, x, y, width, height);
 326    }
 327 }
 328
 329
 330 void
 331 intelInitTextureCopyImageFuncs(struct dd_function_table *functions)
 332 {
 333    functions->CopyTexImage1D = intelCopyTexImage1D;
 334    functions->CopyTexImage2D = intelCopyTexImage2D;
 335    functions->CopyTexSubImage1D = intelCopyTexSubImage1D;
 336    functions->CopyTexSubImage2D = intelCopyTexSubImage2D;
 337 }