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 4:
  76    case GL_RGBA:
  77    case GL_RGBA8:
  78       irb = intel_renderbuffer(intel->ctx.ReadBuffer->_ColorReadBuffer);
  79       /* We're required to set alpha to 1.0 in this case, but we can't
  80        * do that with the blitter, so fall back.  We could use the 3D
  81        * engine or do two passes with the blitter, but it doesn't seem
  82        * worth it for this case. */
  83       if (irb->Base._BaseFormat == GL_RGB)
  84          return NULL;
  85       return irb->region;
  86    case 3:
  87    case GL_RGB:
  88    case GL_RGB8:
  89       return intel_readbuf_region(intel);
  90    default:
  91       return NULL;
  92    }
  93 }
  94
  95
  96 static GLboolean
  97 do_copy_texsubimage(struct intel_context *intel,
  98                     GLenum target,
  99                     struct intel_texture_image *intelImage,
 100                     GLenum internalFormat,
 101                     GLint dstx, GLint dsty,
 102                     GLint x, GLint y, GLsizei width, GLsizei height)
 103 {
 104    struct gl_context *ctx = &intel->ctx;
 105    const struct intel_region *src = get_teximage_source(intel, internalFormat);
 106
 107    if (!intelImage->mt || !src || !src->buffer) {
 108       if (unlikely(INTEL_DEBUG & DEBUG_FALLBACKS))
 109          fprintf(stderr, "%s fail %p %p (0x%08x)\n",
 110                  __FUNCTION__, intelImage->mt, src, internalFormat);
 111       return GL_FALSE;
 112    }
 113
 114    if (intelImage->mt->cpp != src->cpp) {
 115       fallback_debug("%s fail %d vs %d cpp\n",
 116                      __FUNCTION__, intelImage->mt->cpp, src->cpp);
 117       return GL_FALSE;
 118    }
 119
 120    /* intel_flush(ctx); */
 121    intel_prepare_render(intel);
 122    {
 123       drm_intel_bo *dst_bo = intel_region_buffer(intel,
 124                                                  intelImage->mt->region,
 125                                                  INTEL_WRITE_PART);
 126       GLuint image_x, image_y;
 127       GLshort src_pitch;
 128
 129       /* get dest x/y in destination texture */
 130       intel_miptree_get_image_offset(intelImage->mt,
 131                                      intelImage->level,
 132                                      intelImage->face,
 133                                      0,
 134                                      &image_x, &image_y);
 135
 136       /* The blitter can't handle Y-tiled buffers. */
 137       if (intelImage->mt->region->tiling == I915_TILING_Y) {
 138          return GL_FALSE;
 139       }
 140
 141       if (ctx->ReadBuffer->Name == 0) {
 142          /* Flip vertical orientation for system framebuffers */
 143          y = ctx->ReadBuffer->Height - (y + height);
 144          src_pitch = -src->pitch;
 145       } else {
 146          /* reading from a FBO, y is already oriented the way we like */
 147          src_pitch = src->pitch;
 148       }
 149
 150       /* blit from src buffer to texture */
 151       if (!intelEmitCopyBlit(intel,
 152                              intelImage->mt->cpp,
 153                              src_pitch,
 154                              src->buffer,
 155                              0,
 156                              src->tiling,
 157                              intelImage->mt->region->pitch,
 158                              dst_bo,
 159                              0,
 160                              intelImage->mt->region->tiling,
 161                              src->draw_x + x, src->draw_y + y,
 162                              image_x + dstx, image_y + dsty,
 163                              width, height,
 164                              GL_COPY)) {
 165          return GL_FALSE;
 166       }
 167    }
 168
 169    return GL_TRUE;
 170 }
 171
 172
 173 static void
 174 intelCopyTexImage1D(struct gl_context * ctx, GLenum target, GLint level,
 175                     GLenum internalFormat,
 176                     GLint x, GLint y, GLsizei width, GLint border)
 177 {
 178    struct gl_texture_unit *texUnit = _mesa_get_current_tex_unit(ctx);
 179    struct gl_texture_object *texObj =
 180       _mesa_select_tex_object(ctx, texUnit, target);
 181    struct gl_texture_image *texImage =
 182       _mesa_select_tex_image(ctx, texObj, target, level);
 183    int srcx, srcy, dstx, dsty, height;
 184
 185    if (border)
 186       goto fail;
 187
 188    /* Setup or redefine the texture object, mipmap tree and texture
 189     * image.  Don't populate yet.
 190     */
 191    ctx->Driver.TexImage1D(ctx, target, level, internalFormat,
 192                           width, border,
 193                           GL_RGBA, CHAN_TYPE, NULL,
 194                           &ctx->DefaultPacking, texObj, texImage);
 195    srcx = x;
 196    srcy = y;
 197    dstx = 0;
 198    dsty = 0;
 199    height = 1;
 200    if (!_mesa_clip_copytexsubimage(ctx,
 201                                    &dstx, &dsty,
 202                                    &srcx, &srcy,
 203                                    &width, &height))
 204       return;
 205
 206    if (!do_copy_texsubimage(intel_context(ctx), target,
 207                             intel_texture_image(texImage),
 208                             internalFormat, 0, 0, x, y, width, height))
 209       goto fail;
 210
 211    return;
 212
 213  fail:
 214    fallback_debug("%s - fallback to swrast\n", __FUNCTION__);
 215    _mesa_meta_CopyTexImage1D(ctx, target, level, internalFormat, x, y,
 216                              width, border);
 217 }
 218
 219
 220 static void
 221 intelCopyTexImage2D(struct gl_context * ctx, GLenum target, GLint level,
 222                     GLenum internalFormat,
 223                     GLint x, GLint y, GLsizei width, GLsizei height,
 224                     GLint border)
 225 {
 226    struct gl_texture_unit *texUnit = _mesa_get_current_tex_unit(ctx);
 227    struct gl_texture_object *texObj =
 228       _mesa_select_tex_object(ctx, texUnit, target);
 229    struct gl_texture_image *texImage =
 230       _mesa_select_tex_image(ctx, texObj, target, level);
 231    int srcx, srcy, dstx, dsty;
 232
 233    if (border)
 234       goto fail;
 235
 236    /* Setup or redefine the texture object, mipmap tree and texture
 237     * image.  Don't populate yet.
 238     */
 239    ctx->Driver.TexImage2D(ctx, target, level, internalFormat,
 240                           width, height, border,
 241                           GL_RGBA, GL_UNSIGNED_BYTE, NULL,
 242                           &ctx->DefaultPacking, texObj, texImage);
 243
 244    srcx = x;
 245    srcy = y;
 246    dstx = 0;
 247    dsty = 0;
 248    if (!_mesa_clip_copytexsubimage(ctx,
 249                                    &dstx, &dsty,
 250                                    &srcx, &srcy,
 251                                    &width, &height))
 252       return;
 253
 254    if (!do_copy_texsubimage(intel_context(ctx), target,
 255                             intel_texture_image(texImage),
 256                             internalFormat, 0, 0, x, y, width, height))
 257       goto fail;
 258
 259    return;
 260
 261  fail:
 262    fallback_debug("%s - fallback to swrast\n", __FUNCTION__);
 263    _mesa_meta_CopyTexImage2D(ctx, target, level, internalFormat, x, y,
 264                              width, height, border);
 265 }
 266
 267
 268 static void
 269 intelCopyTexSubImage1D(struct gl_context * ctx, GLenum target, GLint level,
 270                        GLint xoffset, GLint x, GLint y, GLsizei width)
 271 {
 272    struct gl_texture_unit *texUnit = _mesa_get_current_tex_unit(ctx);
 273    struct gl_texture_object *texObj =
 274       _mesa_select_tex_object(ctx, texUnit, target);
 275    struct gl_texture_image *texImage =
 276       _mesa_select_tex_image(ctx, texObj, target, level);
 277    GLenum internalFormat = texImage->InternalFormat;
 278
 279    /* XXX need to check <border> as in above function? */
 280
 281    /* Need to check texture is compatible with source format.
 282     */
 283
 284    if (!do_copy_texsubimage(intel_context(ctx), target,
 285                             intel_texture_image(texImage),
 286                             internalFormat, xoffset, 0, x, y, width, 1)) {
 287       fallback_debug("%s - fallback to swrast\n", __FUNCTION__);
 288       _mesa_meta_CopyTexSubImage1D(ctx, target, level, xoffset, x, y, width);
 289    }
 290 }
 291
 292
 293 static void
 294 intelCopyTexSubImage2D(struct gl_context * ctx, GLenum target, GLint level,
 295                        GLint xoffset, GLint yoffset,
 296                        GLint x, GLint y, GLsizei width, GLsizei height)
 297 {
 298    struct gl_texture_unit *texUnit = _mesa_get_current_tex_unit(ctx);
 299    struct gl_texture_object *texObj =
 300       _mesa_select_tex_object(ctx, texUnit, target);
 301    struct gl_texture_image *texImage =
 302       _mesa_select_tex_image(ctx, texObj, target, level);
 303    GLenum internalFormat = texImage->InternalFormat;
 304
 305    /* Need to check texture is compatible with source format.
 306     */
 307
 308    if (!do_copy_texsubimage(intel_context(ctx), target,
 309                             intel_texture_image(texImage),
 310                             internalFormat,
 311                             xoffset, yoffset, x, y, width, height)) {
 312
 313       fallback_debug("%s - fallback to swrast\n", __FUNCTION__);
 314       _mesa_meta_CopyTexSubImage2D(ctx, target, level,
 315                                    xoffset, yoffset, x, y, width, height);
 316    }
 317 }
 318
 319
 320 void
 321 intelInitTextureCopyImageFuncs(struct dd_function_table *functions)
 322 {
 323    functions->CopyTexImage1D = intelCopyTexImage1D;
 324    functions->CopyTexImage2D = intelCopyTexImage2D;
 325    functions->CopyTexSubImage1D = intelCopyTexSubImage1D;
 326    functions->CopyTexSubImage2D = intelCopyTexSubImage2D;
 327 }