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 #include "main/mipmap.h"
  34
  35 #include "drivers/common/meta.h"
  36
  37 #include "intel_screen.h"
  38 #include "intel_context.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 = 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    intel_prepare_render(intel);
 113    {
 114       drm_intel_bo *dst_bo = intel_region_buffer(intel,
 115                                                  intelImage->mt->region,
 116                                                  INTEL_WRITE_PART);
 117       GLuint image_x, image_y;
 118       GLshort src_pitch;
 119
 120       /* get dest x/y in destination texture */
 121       intel_miptree_get_image_offset(intelImage->mt,
 122                                      intelImage->level,
 123                                      intelImage->face,
 124                                      0,
 125                                      &image_x, &image_y);
 126
 127       /* Can't blit to tiled buffers with non-tile-aligned offset. */
 128       if (intelImage->mt->region->tiling == I915_TILING_Y) {
 129          return GL_FALSE;
 130       }
 131
 132       if (ctx->ReadBuffer->Name == 0) {
 133          /* reading from a window, adjust x, y */
 134          const __DRIdrawable *dPriv = intel->driReadDrawable;
 135          y = dPriv->y + (dPriv->h - (y + height));
 136          x += dPriv->x;
 137
 138          /* Invert the data coming from the source rectangle due to GL
 139           * and hardware disagreeing on where y=0 is.
 140           *
 141           * It appears that our offsets and pitches get mangled
 142           * appropriately by the hardware, and we don't need to adjust them
 143           * on our own.
 144           */
 145          src_pitch = -src->pitch;
 146       } else {
 147          /* reading from a FBO, y is already oriented the way we like */
 148          src_pitch = src->pitch;
 149       }
 150
 151       /* blit from src buffer to texture */
 152       if (!intelEmitCopyBlit(intel,
 153                              intelImage->mt->cpp,
 154                              src_pitch,
 155                              src->buffer,
 156                              0,
 157                              src->tiling,
 158                              intelImage->mt->region->pitch,
 159                              dst_bo,
 160                              0,
 161                              intelImage->mt->region->tiling,
 162                              src->draw_x + x, src->draw_y + y,
 163                              image_x + dstx, image_y + dsty,
 164                              width, height,
 165                              GL_COPY)) {
 166          return GL_FALSE;
 167       }
 168    }
 169
 170    return GL_TRUE;
 171 }
 172
 173
 174 static void
 175 intelCopyTexImage1D(GLcontext * ctx, GLenum target, GLint level,
 176                     GLenum internalFormat,
 177                     GLint x, GLint y, GLsizei width, GLint border)
 178 {
 179    struct gl_texture_unit *texUnit = _mesa_get_current_tex_unit(ctx);
 180    struct gl_texture_object *texObj =
 181       _mesa_select_tex_object(ctx, texUnit, target);
 182    struct gl_texture_image *texImage =
 183       _mesa_select_tex_image(ctx, texObj, target, level);
 184    int srcx, srcy, dstx, dsty, height;
 185
 186    if (border)
 187       goto fail;
 188
 189    /* Setup or redefine the texture object, mipmap tree and texture
 190     * image.  Don't populate yet.
 191     */
 192    ctx->Driver.TexImage1D(ctx, target, level, internalFormat,
 193                           width, border,
 194                           GL_RGBA, CHAN_TYPE, NULL,
 195                           &ctx->DefaultPacking, texObj, texImage);
 196    srcx = x;
 197    srcy = y;
 198    dstx = 0;
 199    dsty = 0;
 200    height = 1;
 201    if (!_mesa_clip_copytexsubimage(ctx,
 202                                    &dstx, &dsty,
 203                                    &srcx, &srcy,
 204                                    &width, &height))
 205       return;
 206
 207    if (!do_copy_texsubimage(intel_context(ctx), target,
 208                             intel_texture_image(texImage),
 209                             internalFormat, 0, 0, x, y, width, height))
 210       goto fail;
 211
 212    return;
 213
 214  fail:
 215    if (INTEL_DEBUG & DEBUG_FALLBACKS)
 216       fprintf(stderr, "%s - fallback to swrast\n", __FUNCTION__);
 217    _mesa_meta_CopyTexImage1D(ctx, target, level, internalFormat, x, y,
 218                              width, border);
 219 }
 220
 221
 222 static void
 223 intelCopyTexImage2D(GLcontext * ctx, GLenum target, GLint level,
 224                     GLenum internalFormat,
 225                     GLint x, GLint y, GLsizei width, GLsizei height,
 226                     GLint border)
 227 {
 228    struct gl_texture_unit *texUnit = _mesa_get_current_tex_unit(ctx);
 229    struct gl_texture_object *texObj =
 230       _mesa_select_tex_object(ctx, texUnit, target);
 231    struct gl_texture_image *texImage =
 232       _mesa_select_tex_image(ctx, texObj, target, level);
 233    int srcx, srcy, dstx, dsty;
 234
 235    if (border)
 236       goto fail;
 237
 238    /* Setup or redefine the texture object, mipmap tree and texture
 239     * image.  Don't populate yet.
 240     */
 241    ctx->Driver.TexImage2D(ctx, target, level, internalFormat,
 242                           width, height, border,
 243                           GL_RGBA, GL_UNSIGNED_BYTE, NULL,
 244                           &ctx->DefaultPacking, texObj, texImage);
 245
 246    srcx = x;
 247    srcy = y;
 248    dstx = 0;
 249    dsty = 0;
 250    if (!_mesa_clip_copytexsubimage(ctx,
 251                                    &dstx, &dsty,
 252                                    &srcx, &srcy,
 253                                    &width, &height))
 254       return;
 255
 256    if (!do_copy_texsubimage(intel_context(ctx), target,
 257                             intel_texture_image(texImage),
 258                             internalFormat, 0, 0, x, y, width, height))
 259       goto fail;
 260
 261    return;
 262
 263  fail:
 264    if (INTEL_DEBUG & DEBUG_FALLBACKS)
 265       fprintf(stderr, "%s - fallback to swrast\n", __FUNCTION__);
 266    _mesa_meta_CopyTexImage2D(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 = _mesa_get_current_tex_unit(ctx);
 276    struct gl_texture_object *texObj =
 277       _mesa_select_tex_object(ctx, texUnit, target);
 278    struct gl_texture_image *texImage =
 279       _mesa_select_tex_image(ctx, texObj, target, level);
 280    GLenum internalFormat = texImage->InternalFormat;
 281
 282    /* XXX need to check <border> as in above function? */
 283
 284    /* Need to check texture is compatible with source format.
 285     */
 286
 287    if (!do_copy_texsubimage(intel_context(ctx), target,
 288                             intel_texture_image(texImage),
 289                             internalFormat, xoffset, 0, x, y, width, 1)) {
 290       if (INTEL_DEBUG & DEBUG_FALLBACKS)
 291          fprintf(stderr, "%s - fallback to swrast\n", __FUNCTION__);
 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 = _mesa_get_current_tex_unit(ctx);
 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       if (INTEL_DEBUG & DEBUG_FALLBACKS)
 318          fprintf(stderr, "%s - fallback to swrast\n", __FUNCTION__);
 319       _mesa_meta_CopyTexSubImage2D(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 }