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/texstate.h"
  33
  34 #include "drivers/common/meta.h"
  35
  36 #include "intel_screen.h"
  37 #include "intel_context.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 4:
  75    case GL_RGBA:
  76    case GL_RGBA8:
  77       irb = intel_renderbuffer(intel->ctx.ReadBuffer->_ColorReadBuffer);
  78       /* We're required to set alpha to 1.0 in this case, but we can't
  79        * do that with the blitter, so fall back.  We could use the 3D
  80        * engine or do two passes with the blitter, but it doesn't seem
  81        * worth it for this case. */
  82       if (irb->Base._BaseFormat == GL_RGB)
  83          return NULL;
  84       return irb->region;
  85    case 3:
  86    case GL_RGB:
  87    case GL_RGB8:
  88       return intel_readbuf_region(intel);
  89    default:
  90       return NULL;
  91    }
  92 }
  93
  94
  95 static GLboolean
  96 do_copy_texsubimage(struct intel_context *intel,
  97                     GLenum target,
  98                     struct intel_texture_image *intelImage,
  99                     GLenum internalFormat,
 100                     GLint dstx, GLint dsty,
 101                     GLint x, GLint y, GLsizei width, GLsizei height)
 102 {
 103    struct gl_context *ctx = &intel->ctx;
 104    const struct intel_region *src = get_teximage_source(intel, internalFormat);
 105
 106    if (!intelImage->mt || !src || !src->buffer) {
 107       if (unlikely(INTEL_DEBUG & DEBUG_FALLBACKS))
 108          fprintf(stderr, "%s fail %p %p (0x%08x)\n",
 109                  __FUNCTION__, intelImage->mt, src, internalFormat);
 110       return GL_FALSE;
 111    }
 112
 113    if (intelImage->mt->cpp != src->cpp) {
 114       fallback_debug("%s fail %d vs %d cpp\n",
 115                      __FUNCTION__, intelImage->mt->cpp, src->cpp);
 116       return GL_FALSE;
 117    }
 118
 119    /* intel_flush(ctx); */
 120    intel_prepare_render(intel);
 121    {
 122       drm_intel_bo *dst_bo = intel_region_buffer(intel,
 123                                                  intelImage->mt->region,
 124                                                  INTEL_WRITE_PART);
 125       GLuint image_x, image_y;
 126       GLshort src_pitch;
 127
 128       /* get dest x/y in destination texture */
 129       intel_miptree_get_image_offset(intelImage->mt,
 130                                      intelImage->level,
 131                                      intelImage->face,
 132                                      0,
 133                                      &image_x, &image_y);
 134
 135       /* The blitter can't handle Y-tiled buffers. */
 136       if (intelImage->mt->region->tiling == I915_TILING_Y) {
 137          return GL_FALSE;
 138       }
 139
 140       if (ctx->ReadBuffer->Name == 0) {
 141          /* Flip vertical orientation for system framebuffers */
 142          y = ctx->ReadBuffer->Height - (y + height);
 143          src_pitch = -src->pitch;
 144       } else {
 145          /* reading from a FBO, y is already oriented the way we like */
 146          src_pitch = src->pitch;
 147       }
 148
 149       /* blit from src buffer to texture */
 150       if (!intelEmitCopyBlit(intel,
 151                              intelImage->mt->cpp,
 152                              src_pitch,
 153                              src->buffer,
 154                              0,
 155                              src->tiling,
 156                              intelImage->mt->region->pitch,
 157                              dst_bo,
 158                              0,
 159                              intelImage->mt->region->tiling,
 160                              src->draw_x + x, src->draw_y + y,
 161                              image_x + dstx, image_y + dsty,
 162                              width, height,
 163                              GL_COPY)) {
 164          return GL_FALSE;
 165       }
 166    }
 167
 168    return GL_TRUE;
 169 }
 170
 171
 172 static void
 173 intelCopyTexImage1D(struct gl_context * ctx, GLenum target, GLint level,
 174                     GLenum internalFormat,
 175                     GLint x, GLint y, GLsizei width, GLint border)
 176 {
 177    struct gl_texture_unit *texUnit = _mesa_get_current_tex_unit(ctx);
 178    struct gl_texture_object *texObj =
 179       _mesa_select_tex_object(ctx, texUnit, target);
 180    struct gl_texture_image *texImage =
 181       _mesa_select_tex_image(ctx, texObj, target, level);
 182    int srcx, srcy, dstx, dsty, height;
 183
 184    if (border)
 185       goto fail;
 186
 187    /* Setup or redefine the texture object, mipmap tree and texture
 188     * image.  Don't populate yet.
 189     */
 190    ctx->Driver.TexImage1D(ctx, target, level, internalFormat,
 191                           width, border,
 192                           GL_RGBA, CHAN_TYPE, NULL,
 193                           &ctx->DefaultPacking, texObj, texImage);
 194    srcx = x;
 195    srcy = y;
 196    dstx = 0;
 197    dsty = 0;
 198    height = 1;
 199    if (!_mesa_clip_copytexsubimage(ctx,
 200                                    &dstx, &dsty,
 201                                    &srcx, &srcy,
 202                                    &width, &height))
 203       return;
 204
 205    if (!do_copy_texsubimage(intel_context(ctx), target,
 206                             intel_texture_image(texImage),
 207                             internalFormat, 0, 0, x, y, width, height))
 208       goto fail;
 209
 210    return;
 211
 212  fail:
 213    fallback_debug("%s - fallback to swrast\n", __FUNCTION__);
 214    _mesa_meta_CopyTexImage1D(ctx, target, level, internalFormat, x, y,
 215                              width, border);
 216 }
 217
 218
 219 static void
 220 intelCopyTexImage2D(struct gl_context * ctx, GLenum target, GLint level,
 221                     GLenum internalFormat,
 222                     GLint x, GLint y, GLsizei width, GLsizei height,
 223                     GLint border)
 224 {
 225    struct gl_texture_unit *texUnit = _mesa_get_current_tex_unit(ctx);
 226    struct gl_texture_object *texObj =
 227       _mesa_select_tex_object(ctx, texUnit, target);
 228    struct gl_texture_image *texImage =
 229       _mesa_select_tex_image(ctx, texObj, target, level);
 230    int srcx, srcy, dstx, dsty;
 231
 232    if (border)
 233       goto fail;
 234
 235    /* Setup or redefine the texture object, mipmap tree and texture
 236     * image.  Don't populate yet.
 237     */
 238    ctx->Driver.TexImage2D(ctx, target, level, internalFormat,
 239                           width, height, border,
 240                           GL_RGBA, GL_UNSIGNED_BYTE, NULL,
 241                           &ctx->DefaultPacking, texObj, texImage);
 242
 243    srcx = x;
 244    srcy = y;
 245    dstx = 0;
 246    dsty = 0;
 247    if (!_mesa_clip_copytexsubimage(ctx,
 248                                    &dstx, &dsty,
 249                                    &srcx, &srcy,
 250                                    &width, &height))
 251       return;
 252
 253    if (!do_copy_texsubimage(intel_context(ctx), target,
 254                             intel_texture_image(texImage),
 255                             internalFormat, 0, 0, x, y, width, height))
 256       goto fail;
 257
 258    return;
 259
 260  fail:
 261    fallback_debug("%s - fallback to swrast\n", __FUNCTION__);
 262    _mesa_meta_CopyTexImage2D(ctx, target, level, internalFormat, x, y,
 263                              width, height, border);
 264 }
 265
 266
 267 static void
 268 intelCopyTexSubImage1D(struct gl_context * ctx, GLenum target, GLint level,
 269                        GLint xoffset, GLint x, GLint y, GLsizei width)
 270 {
 271    struct gl_texture_unit *texUnit = _mesa_get_current_tex_unit(ctx);
 272    struct gl_texture_object *texObj =
 273       _mesa_select_tex_object(ctx, texUnit, target);
 274    struct gl_texture_image *texImage =
 275       _mesa_select_tex_image(ctx, texObj, target, level);
 276    GLenum internalFormat = texImage->InternalFormat;
 277
 278    /* XXX need to check <border> as in above function? */
 279
 280    /* Need to check texture is compatible with source format.
 281     */
 282
 283    if (!do_copy_texsubimage(intel_context(ctx), target,
 284                             intel_texture_image(texImage),
 285                             internalFormat, xoffset, 0, x, y, width, 1)) {
 286       fallback_debug("%s - fallback to swrast\n", __FUNCTION__);
 287       _mesa_meta_CopyTexSubImage1D(ctx, target, level, xoffset, x, y, width);
 288    }
 289 }
 290
 291
 292 static void
 293 intelCopyTexSubImage2D(struct gl_context * ctx, GLenum target, GLint level,
 294                        GLint xoffset, GLint yoffset,
 295                        GLint x, GLint y, GLsizei width, GLsizei height)
 296 {
 297    struct gl_texture_unit *texUnit = _mesa_get_current_tex_unit(ctx);
 298    struct gl_texture_object *texObj =
 299       _mesa_select_tex_object(ctx, texUnit, target);
 300    struct gl_texture_image *texImage =
 301       _mesa_select_tex_image(ctx, texObj, target, level);
 302    GLenum internalFormat = texImage->InternalFormat;
 303
 304    /* Need to check texture is compatible with source format.
 305     */
 306
 307    if (!do_copy_texsubimage(intel_context(ctx), target,
 308                             intel_texture_image(texImage),
 309                             internalFormat,
 310                             xoffset, yoffset, x, y, width, height)) {
 311
 312       fallback_debug("%s - fallback to swrast\n", __FUNCTION__);
 313       _mesa_meta_CopyTexSubImage2D(ctx, target, level,
 314                                    xoffset, yoffset, x, y, width, height);
 315    }
 316 }
 317
 318
 319 void
 320 intelInitTextureCopyImageFuncs(struct dd_function_table *functions)
 321 {
 322    functions->CopyTexImage1D = intelCopyTexImage1D;
 323    functions->CopyTexImage2D = intelCopyTexImage2D;
 324    functions->CopyTexSubImage1D = intelCopyTexSubImage1D;
 325    functions->CopyTexSubImage2D = intelCopyTexSubImage2D;
 326 }