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    switch (internalFormat) {
  59    case GL_DEPTH_COMPONENT:
  60    case GL_DEPTH_COMPONENT16:
  61    case GL_DEPTH24_STENCIL8_EXT:
  62    case GL_DEPTH_STENCIL_EXT:
  63       return intel_get_renderbuffer(intel->ctx.ReadBuffer, BUFFER_DEPTH);
  64    default:
  65       return intel_renderbuffer(intel->ctx.ReadBuffer->_ColorReadBuffer);
  66    }
  67 }
  68
  69
  70 static GLboolean
  71 do_copy_texsubimage(struct intel_context *intel,
  72                     GLenum target,
  73                     struct intel_texture_image *intelImage,
  74                     GLenum internalFormat,
  75                     GLint dstx, GLint dsty,
  76                     GLint x, GLint y, GLsizei width, GLsizei height)
  77 {
  78    struct gl_context *ctx = &intel->ctx;
  79    struct intel_renderbuffer *irb;
  80    bool copy_supported_with_alpha_override = false;
  81
  82    intel_prepare_render(intel);
  83
  84    irb = get_teximage_readbuffer(intel, internalFormat);
  85    if (!intelImage->mt || !irb || !irb->region) {
  86       if (unlikely(INTEL_DEBUG & DEBUG_FALLBACKS))
  87          fprintf(stderr, "%s fail %p %p (0x%08x)\n",
  88                  __FUNCTION__, intelImage->mt, irb, internalFormat);
  89       return GL_FALSE;
  90    }
  91
  92    if (irb->Base.Format == MESA_FORMAT_XRGB8888 &&
  93        intelImage->base.TexFormat == MESA_FORMAT_ARGB8888) {
  94       copy_supported_with_alpha_override = true;
  95    }
  96
  97    if (intelImage->base.TexFormat != irb->Base.Format &&
  98        !copy_supported_with_alpha_override) {
  99       if (unlikely(INTEL_DEBUG & DEBUG_FALLBACKS))
 100          fprintf(stderr, "%s mismatched formats %s, %s\n",
 101                  __FUNCTION__,
 102                  _mesa_get_format_name(intelImage->base.TexFormat),
 103                  _mesa_get_format_name(irb->Base.Format));
 104       return GL_FALSE;
 105    }
 106
 107    {
 108       drm_intel_bo *dst_bo = intel_region_buffer(intel,
 109                                                  intelImage->mt->region,
 110                                                  INTEL_WRITE_PART);
 111       GLuint image_x, image_y;
 112       GLshort src_pitch;
 113
 114       /* get dest x/y in destination texture */
 115       intel_miptree_get_image_offset(intelImage->mt,
 116                                      intelImage->level,
 117                                      intelImage->face,
 118                                      0,
 119                                      &image_x, &image_y);
 120
 121       /* The blitter can't handle Y-tiled buffers. */
 122       if (intelImage->mt->region->tiling == I915_TILING_Y) {
 123          return GL_FALSE;
 124       }
 125
 126       if (ctx->ReadBuffer->Name == 0) {
 127          /* Flip vertical orientation for system framebuffers */
 128          y = ctx->ReadBuffer->Height - (y + height);
 129          src_pitch = -irb->region->pitch;
 130       } else {
 131          /* reading from a FBO, y is already oriented the way we like */
 132          src_pitch = irb->region->pitch;
 133       }
 134
 135       /* blit from src buffer to texture */
 136       if (!intelEmitCopyBlit(intel,
 137                              intelImage->mt->cpp,
 138                              src_pitch,
 139                              irb->region->buffer,
 140                              0,
 141                              irb->region->tiling,
 142                              intelImage->mt->region->pitch,
 143                              dst_bo,
 144                              0,
 145                              intelImage->mt->region->tiling,
 146                              irb->region->draw_x + x, irb->region->draw_y + y,
 147                              image_x + dstx, image_y + dsty,
 148                              width, height,
 149                              GL_COPY)) {
 150          return GL_FALSE;
 151       }
 152    }
 153
 154    if (copy_supported_with_alpha_override)
 155       intel_set_teximage_alpha_to_one(ctx, intelImage);
 156
 157    return GL_TRUE;
 158 }
 159
 160
 161 static void
 162 intelCopyTexImage1D(struct gl_context * ctx, GLenum target, GLint level,
 163                     GLenum internalFormat,
 164                     GLint x, GLint y, GLsizei width, GLint border)
 165 {
 166    struct gl_texture_unit *texUnit = _mesa_get_current_tex_unit(ctx);
 167    struct gl_texture_object *texObj =
 168       _mesa_select_tex_object(ctx, texUnit, target);
 169    struct gl_texture_image *texImage =
 170       _mesa_select_tex_image(ctx, texObj, target, level);
 171    int srcx, srcy, dstx, dsty, height;
 172
 173    if (border)
 174       goto fail;
 175
 176    /* Setup or redefine the texture object, mipmap tree and texture
 177     * image.  Don't populate yet.
 178     */
 179    ctx->Driver.TexImage1D(ctx, target, level, internalFormat,
 180                           width, border,
 181                           GL_RGBA, CHAN_TYPE, NULL,
 182                           &ctx->DefaultPacking, texObj, texImage);
 183    srcx = x;
 184    srcy = y;
 185    dstx = 0;
 186    dsty = 0;
 187    height = 1;
 188    if (!_mesa_clip_copytexsubimage(ctx,
 189                                    &dstx, &dsty,
 190                                    &srcx, &srcy,
 191                                    &width, &height))
 192       return;
 193
 194    if (!do_copy_texsubimage(intel_context(ctx), target,
 195                             intel_texture_image(texImage),
 196                             internalFormat, 0, 0, x, y, width, height))
 197       goto fail;
 198
 199    return;
 200
 201  fail:
 202    fallback_debug("%s - fallback to swrast\n", __FUNCTION__);
 203    _mesa_meta_CopyTexImage1D(ctx, target, level, internalFormat, x, y,
 204                              width, border);
 205 }
 206
 207
 208 static void
 209 intelCopyTexImage2D(struct gl_context * ctx, GLenum target, GLint level,
 210                     GLenum internalFormat,
 211                     GLint x, GLint y, GLsizei width, GLsizei height,
 212                     GLint border)
 213 {
 214    struct gl_texture_unit *texUnit = _mesa_get_current_tex_unit(ctx);
 215    struct gl_texture_object *texObj =
 216       _mesa_select_tex_object(ctx, texUnit, target);
 217    struct gl_texture_image *texImage =
 218       _mesa_select_tex_image(ctx, texObj, target, level);
 219    int srcx, srcy, dstx, dsty;
 220
 221    if (border)
 222       goto fail;
 223
 224    /* Setup or redefine the texture object, mipmap tree and texture
 225     * image.  Don't populate yet.
 226     */
 227    ctx->Driver.TexImage2D(ctx, target, level, internalFormat,
 228                           width, height, border,
 229                           GL_RGBA, GL_UNSIGNED_BYTE, NULL,
 230                           &ctx->DefaultPacking, texObj, texImage);
 231
 232    srcx = x;
 233    srcy = y;
 234    dstx = 0;
 235    dsty = 0;
 236    if (!_mesa_clip_copytexsubimage(ctx,
 237                                    &dstx, &dsty,
 238                                    &srcx, &srcy,
 239                                    &width, &height))
 240       return;
 241
 242    if (!do_copy_texsubimage(intel_context(ctx), target,
 243                             intel_texture_image(texImage),
 244                             internalFormat, 0, 0, x, y, width, height))
 245       goto fail;
 246
 247    return;
 248
 249  fail:
 250    fallback_debug("%s - fallback to swrast\n", __FUNCTION__);
 251    _mesa_meta_CopyTexImage2D(ctx, target, level, internalFormat, x, y,
 252                              width, height, border);
 253 }
 254
 255
 256 static void
 257 intelCopyTexSubImage1D(struct gl_context * ctx, GLenum target, GLint level,
 258                        GLint xoffset, GLint x, GLint y, GLsizei width)
 259 {
 260    struct gl_texture_unit *texUnit = _mesa_get_current_tex_unit(ctx);
 261    struct gl_texture_object *texObj =
 262       _mesa_select_tex_object(ctx, texUnit, target);
 263    struct gl_texture_image *texImage =
 264       _mesa_select_tex_image(ctx, texObj, target, level);
 265    GLenum internalFormat = texImage->InternalFormat;
 266
 267    /* XXX need to check <border> as in above function? */
 268
 269    /* Need to check texture is compatible with source format.
 270     */
 271
 272    if (!do_copy_texsubimage(intel_context(ctx), target,
 273                             intel_texture_image(texImage),
 274                             internalFormat, xoffset, 0, x, y, width, 1)) {
 275       fallback_debug("%s - fallback to swrast\n", __FUNCTION__);
 276       _mesa_meta_CopyTexSubImage1D(ctx, target, level, xoffset, x, y, width);
 277    }
 278 }
 279
 280
 281 static void
 282 intelCopyTexSubImage2D(struct gl_context * ctx, GLenum target, GLint level,
 283                        GLint xoffset, GLint yoffset,
 284                        GLint x, GLint y, GLsizei width, GLsizei height)
 285 {
 286    struct gl_texture_unit *texUnit = _mesa_get_current_tex_unit(ctx);
 287    struct gl_texture_object *texObj =
 288       _mesa_select_tex_object(ctx, texUnit, target);
 289    struct gl_texture_image *texImage =
 290       _mesa_select_tex_image(ctx, texObj, target, level);
 291    GLenum internalFormat = texImage->InternalFormat;
 292
 293    /* Need to check texture is compatible with source format.
 294     */
 295
 296    if (!do_copy_texsubimage(intel_context(ctx), target,
 297                             intel_texture_image(texImage),
 298                             internalFormat,
 299                             xoffset, yoffset, x, y, width, height)) {
 300
 301       fallback_debug("%s - fallback to swrast\n", __FUNCTION__);
 302       _mesa_meta_CopyTexSubImage2D(ctx, target, level,
 303                                    xoffset, yoffset, x, y, width, height);
 304    }
 305 }
 306
 307
 308 void
 309 intelInitTextureCopyImageFuncs(struct dd_function_table *functions)
 310 {
 311    functions->CopyTexImage1D = intelCopyTexImage1D;
 312    functions->CopyTexImage2D = intelCopyTexImage2D;
 313    functions->CopyTexSubImage1D = intelCopyTexSubImage1D;
 314    functions->CopyTexSubImage2D = intelCopyTexSubImage2D;
 315 }