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_mipmap_tree.h"
  39 #include "intel_regions.h"
  40 #include "intel_fbo.h"
  41 #include "intel_tex.h"
  42 #include "intel_blit.h"
  43
  44 #define FILE_DEBUG_FLAG DEBUG_TEXTURE
  45
  46 /**
  47  * Get the intel_region which is the source for any glCopyTex[Sub]Image call.
  48  *
  49  * Do the best we can using the blitter.  A future project is to use
  50  * the texture engine and fragment programs for these copies.
  51  */
  52 static struct intel_renderbuffer *
  53 get_teximage_readbuffer(struct intel_context *intel, GLenum internalFormat)
  54 {
  55    DBG("%s %s\n", __FUNCTION__,
  56        _mesa_lookup_enum_by_nr(internalFormat));
  57
  58    if (_mesa_is_depth_format(internalFormat) ||
  59        _mesa_is_depthstencil_format(internalFormat))
  60       return intel_get_renderbuffer(intel->ctx.ReadBuffer, BUFFER_DEPTH);
  61
  62    return intel_renderbuffer(intel->ctx.ReadBuffer->_ColorReadBuffer);
  63 }
  64
  65
  66 GLboolean
  67 intel_copy_texsubimage(struct intel_context *intel,
  68                        GLenum target,
  69                        struct intel_texture_image *intelImage,
  70                        GLenum internalFormat,
  71                        GLint dstx, GLint dsty,
  72                        GLint x, GLint y, GLsizei width, GLsizei height)
  73 {
  74    struct gl_context *ctx = &intel->ctx;
  75    struct intel_renderbuffer *irb;
  76    bool copy_supported = false;
  77    bool copy_supported_with_alpha_override = false;
  78
  79    intel_prepare_render(intel);
  80
  81    irb = get_teximage_readbuffer(intel, internalFormat);
  82    if (!intelImage->mt || !irb || !irb->region) {
  83       if (unlikely(INTEL_DEBUG & DEBUG_FALLBACKS))
  84          fprintf(stderr, "%s fail %p %p (0x%08x)\n",
  85                  __FUNCTION__, intelImage->mt, irb, internalFormat);
  86       return GL_FALSE;
  87    }
  88
  89    copy_supported = intelImage->base.TexFormat == irb->Base.Format;
  90
  91    /* Converting ARGB8888 to XRGB8888 is trivial: ignore the alpha bits */
  92    if (irb->Base.Format == MESA_FORMAT_ARGB8888 &&
  93        intelImage->base.TexFormat == MESA_FORMAT_XRGB8888) {
  94       copy_supported = true;
  95    }
  96
  97    /* Converting XRGB8888 to ARGB8888 requires setting the alpha bits to 1.0 */
  98    if (irb->Base.Format == MESA_FORMAT_XRGB8888 &&
  99        intelImage->base.TexFormat == MESA_FORMAT_ARGB8888) {
 100       copy_supported_with_alpha_override = true;
 101    }
 102
 103    if (!copy_supported && !copy_supported_with_alpha_override) {
 104       if (unlikely(INTEL_DEBUG & DEBUG_FALLBACKS))
 105          fprintf(stderr, "%s mismatched formats %s, %s\n",
 106                  __FUNCTION__,
 107                  _mesa_get_format_name(intelImage->base.TexFormat),
 108                  _mesa_get_format_name(irb->Base.Format));
 109       return GL_FALSE;
 110    }
 111
 112    {
 113       drm_intel_bo *dst_bo = intel_region_buffer(intel,
 114                                                  intelImage->mt->region,
 115                                                  INTEL_WRITE_PART);
 116       GLuint image_x, image_y;
 117       GLshort src_pitch;
 118
 119       /* get dest x/y in destination texture */
 120       intel_miptree_get_image_offset(intelImage->mt,
 121                                      intelImage->level,
 122                                      intelImage->face,
 123                                      0,
 124                                      &image_x, &image_y);
 125
 126       /* The blitter can't handle Y-tiled buffers. */
 127       if (intelImage->mt->region->tiling == I915_TILING_Y) {
 128          return GL_FALSE;
 129       }
 130
 131       if (ctx->ReadBuffer->Name == 0) {
 132          /* Flip vertical orientation for system framebuffers */
 133          y = ctx->ReadBuffer->Height - (y + height);
 134          src_pitch = -irb->region->pitch;
 135       } else {
 136          /* reading from a FBO, y is already oriented the way we like */
 137          src_pitch = irb->region->pitch;
 138       }
 139
 140       /* blit from src buffer to texture */
 141       if (!intelEmitCopyBlit(intel,
 142                              intelImage->mt->cpp,
 143                              src_pitch,
 144                              irb->region->buffer,
 145                              0,
 146                              irb->region->tiling,
 147                              intelImage->mt->region->pitch,
 148                              dst_bo,
 149                              0,
 150                              intelImage->mt->region->tiling,
 151                              irb->draw_x + x, irb->draw_y + y,
 152                              image_x + dstx, image_y + dsty,
 153                              width, height,
 154                              GL_COPY)) {
 155          return GL_FALSE;
 156       }
 157    }
 158
 159    if (copy_supported_with_alpha_override)
 160       intel_set_teximage_alpha_to_one(ctx, intelImage);
 161
 162    return GL_TRUE;
 163 }
 164
 165
 166 static void
 167 intelCopyTexImage1D(struct gl_context * ctx, GLenum target, GLint level,
 168                     GLenum internalFormat,
 169                     GLint x, GLint y, GLsizei width, GLint border)
 170 {
 171    struct gl_texture_unit *texUnit = _mesa_get_current_tex_unit(ctx);
 172    struct gl_texture_object *texObj =
 173       _mesa_select_tex_object(ctx, texUnit, target);
 174    struct gl_texture_image *texImage =
 175       _mesa_select_tex_image(ctx, texObj, target, level);
 176    int srcx, srcy, dstx, dsty, height;
 177
 178    if (border)
 179       goto fail;
 180
 181    /* Setup or redefine the texture object, mipmap tree and texture
 182     * image.  Don't populate yet.
 183     */
 184    ctx->Driver.TexImage1D(ctx, target, level, internalFormat,
 185                           width, border,
 186                           GL_RGBA, CHAN_TYPE, NULL,
 187                           &ctx->DefaultPacking, texObj, texImage);
 188    srcx = x;
 189    srcy = y;
 190    dstx = 0;
 191    dsty = 0;
 192    height = 1;
 193    if (!_mesa_clip_copytexsubimage(ctx,
 194                                    &dstx, &dsty,
 195                                    &srcx, &srcy,
 196                                    &width, &height))
 197       return;
 198
 199    if (!intel_copy_texsubimage(intel_context(ctx), target,
 200                                intel_texture_image(texImage),
 201                                internalFormat, 0, 0, x, y, width, height))
 202       goto fail;
 203
 204    return;
 205
 206  fail:
 207    fallback_debug("%s - fallback to swrast\n", __FUNCTION__);
 208    _mesa_meta_CopyTexImage1D(ctx, target, level, internalFormat, x, y,
 209                              width, border);
 210 }
 211
 212
 213 static void
 214 intelCopyTexImage2D(struct gl_context * ctx, GLenum target, GLint level,
 215                     GLenum internalFormat,
 216                     GLint x, GLint y, GLsizei width, GLsizei height,
 217                     GLint border)
 218 {
 219    struct gl_texture_unit *texUnit = _mesa_get_current_tex_unit(ctx);
 220    struct gl_texture_object *texObj =
 221       _mesa_select_tex_object(ctx, texUnit, target);
 222    struct gl_texture_image *texImage =
 223       _mesa_select_tex_image(ctx, texObj, target, level);
 224    int srcx, srcy, dstx, dsty;
 225
 226    if (border)
 227       goto fail;
 228
 229    /* Setup or redefine the texture object, mipmap tree and texture
 230     * image.  Don't populate yet.
 231     */
 232    ctx->Driver.TexImage2D(ctx, target, level, internalFormat,
 233                           width, height, border,
 234                           GL_RGBA, GL_UNSIGNED_BYTE, NULL,
 235                           &ctx->DefaultPacking, texObj, texImage);
 236
 237    srcx = x;
 238    srcy = y;
 239    dstx = 0;
 240    dsty = 0;
 241    if (!_mesa_clip_copytexsubimage(ctx,
 242                                    &dstx, &dsty,
 243                                    &srcx, &srcy,
 244                                    &width, &height))
 245       return;
 246
 247    if (!intel_copy_texsubimage(intel_context(ctx), target,
 248                                intel_texture_image(texImage),
 249                                internalFormat, 0, 0, x, y, width, height))
 250       goto fail;
 251
 252    return;
 253
 254  fail:
 255    fallback_debug("%s - fallback to swrast\n", __FUNCTION__);
 256    _mesa_meta_CopyTexImage2D(ctx, target, level, internalFormat, x, y,
 257                              width, height, border);
 258 }
 259
 260
 261 static void
 262 intelCopyTexSubImage1D(struct gl_context * ctx, GLenum target, GLint level,
 263                        GLint xoffset, GLint x, GLint y, GLsizei width)
 264 {
 265    struct gl_texture_unit *texUnit = _mesa_get_current_tex_unit(ctx);
 266    struct gl_texture_object *texObj =
 267       _mesa_select_tex_object(ctx, texUnit, target);
 268    struct gl_texture_image *texImage =
 269       _mesa_select_tex_image(ctx, texObj, target, level);
 270    GLenum internalFormat = texImage->InternalFormat;
 271
 272    /* XXX need to check <border> as in above function? */
 273
 274    /* Need to check texture is compatible with source format.
 275     */
 276
 277    if (!intel_copy_texsubimage(intel_context(ctx), target,
 278                                intel_texture_image(texImage),
 279                                internalFormat, xoffset, 0, x, y, width, 1)) {
 280       fallback_debug("%s - fallback to swrast\n", __FUNCTION__);
 281       _mesa_meta_CopyTexSubImage1D(ctx, target, level, xoffset, x, y, width);
 282    }
 283 }
 284
 285
 286 static void
 287 intelCopyTexSubImage2D(struct gl_context * ctx, GLenum target, GLint level,
 288                        GLint xoffset, GLint yoffset,
 289                        GLint x, GLint y, GLsizei width, GLsizei height)
 290 {
 291    struct gl_texture_unit *texUnit = _mesa_get_current_tex_unit(ctx);
 292    struct gl_texture_object *texObj =
 293       _mesa_select_tex_object(ctx, texUnit, target);
 294    struct gl_texture_image *texImage =
 295       _mesa_select_tex_image(ctx, texObj, target, level);
 296    GLenum internalFormat = texImage->InternalFormat;
 297
 298    /* Need to check texture is compatible with source format.
 299     */
 300
 301    if (!intel_copy_texsubimage(intel_context(ctx), target,
 302                                intel_texture_image(texImage),
 303                                internalFormat,
 304                                xoffset, yoffset, x, y, width, height)) {
 305       fallback_debug("%s - fallback to swrast\n", __FUNCTION__);
 306       _mesa_meta_CopyTexSubImage2D(ctx, target, level,
 307                                    xoffset, yoffset, x, y, width, height);
 308    }
 309 }
 310
 311
 312 void
 313 intelInitTextureCopyImageFuncs(struct dd_function_table *functions)
 314 {
 315    functions->CopyTexImage1D = intelCopyTexImage1D;
 316    functions->CopyTexImage2D = intelCopyTexImage2D;
 317    functions->CopyTexSubImage1D = intelCopyTexSubImage1D;
 318    functions->CopyTexSubImage2D = intelCopyTexSubImage2D;
 319 }