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 GLboolean
  71 intel_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 = false;
  81    bool copy_supported_with_alpha_override = false;
  82
  83    intel_prepare_render(intel);
  84
  85    irb = get_teximage_readbuffer(intel, internalFormat);
  86    if (!intelImage->mt || !irb || !irb->region) {
  87       if (unlikely(INTEL_DEBUG & DEBUG_FALLBACKS))
  88          fprintf(stderr, "%s fail %p %p (0x%08x)\n",
  89                  __FUNCTION__, intelImage->mt, irb, internalFormat);
  90       return GL_FALSE;
  91    }
  92
  93    copy_supported = intelImage->base.TexFormat == irb->Base.Format;
  94
  95    /* Converting ARGB8888 to XRGB8888 is trivial: ignore the alpha bits */
  96    if (irb->Base.Format == MESA_FORMAT_ARGB8888 &&
  97        intelImage->base.TexFormat == MESA_FORMAT_XRGB8888) {
  98       copy_supported = true;
  99    }
 100
 101    /* Converting XRGB8888 to ARGB8888 requires setting the alpha bits to 1.0 */
 102    if (irb->Base.Format == MESA_FORMAT_XRGB8888 &&
 103        intelImage->base.TexFormat == MESA_FORMAT_ARGB8888) {
 104       copy_supported_with_alpha_override = true;
 105    }
 106
 107    if (!copy_supported && !copy_supported_with_alpha_override) {
 108       if (unlikely(INTEL_DEBUG & DEBUG_FALLBACKS))
 109          fprintf(stderr, "%s mismatched formats %s, %s\n",
 110                  __FUNCTION__,
 111                  _mesa_get_format_name(intelImage->base.TexFormat),
 112                  _mesa_get_format_name(irb->Base.Format));
 113       return GL_FALSE;
 114    }
 115
 116    {
 117       drm_intel_bo *dst_bo = intel_region_buffer(intel,
 118                                                  intelImage->mt->region,
 119                                                  INTEL_WRITE_PART);
 120       GLuint image_x, image_y;
 121       GLshort src_pitch;
 122
 123       /* get dest x/y in destination texture */
 124       intel_miptree_get_image_offset(intelImage->mt,
 125                                      intelImage->level,
 126                                      intelImage->face,
 127                                      0,
 128                                      &image_x, &image_y);
 129
 130       /* The blitter can't handle Y-tiled buffers. */
 131       if (intelImage->mt->region->tiling == I915_TILING_Y) {
 132          return GL_FALSE;
 133       }
 134
 135       if (ctx->ReadBuffer->Name == 0) {
 136          /* Flip vertical orientation for system framebuffers */
 137          y = ctx->ReadBuffer->Height - (y + height);
 138          src_pitch = -irb->region->pitch;
 139       } else {
 140          /* reading from a FBO, y is already oriented the way we like */
 141          src_pitch = irb->region->pitch;
 142       }
 143
 144       /* blit from src buffer to texture */
 145       if (!intelEmitCopyBlit(intel,
 146                              intelImage->mt->cpp,
 147                              src_pitch,
 148                              irb->region->buffer,
 149                              0,
 150                              irb->region->tiling,
 151                              intelImage->mt->region->pitch,
 152                              dst_bo,
 153                              0,
 154                              intelImage->mt->region->tiling,
 155                              irb->draw_x + x, irb->draw_y + y,
 156                              image_x + dstx, image_y + dsty,
 157                              width, height,
 158                              GL_COPY)) {
 159          return GL_FALSE;
 160       }
 161    }
 162
 163    if (copy_supported_with_alpha_override)
 164       intel_set_teximage_alpha_to_one(ctx, intelImage);
 165
 166    return GL_TRUE;
 167 }
 168
 169
 170 static void
 171 intelCopyTexImage1D(struct gl_context * ctx, GLenum target, GLint level,
 172                     GLenum internalFormat,
 173                     GLint x, GLint y, GLsizei width, GLint border)
 174 {
 175    struct gl_texture_unit *texUnit = _mesa_get_current_tex_unit(ctx);
 176    struct gl_texture_object *texObj =
 177       _mesa_select_tex_object(ctx, texUnit, target);
 178    struct gl_texture_image *texImage =
 179       _mesa_select_tex_image(ctx, texObj, target, level);
 180    int srcx, srcy, dstx, dsty, height;
 181
 182    if (border)
 183       goto fail;
 184
 185    /* Setup or redefine the texture object, mipmap tree and texture
 186     * image.  Don't populate yet.
 187     */
 188    ctx->Driver.TexImage1D(ctx, target, level, internalFormat,
 189                           width, border,
 190                           GL_RGBA, CHAN_TYPE, NULL,
 191                           &ctx->DefaultPacking, texObj, texImage);
 192    srcx = x;
 193    srcy = y;
 194    dstx = 0;
 195    dsty = 0;
 196    height = 1;
 197    if (!_mesa_clip_copytexsubimage(ctx,
 198                                    &dstx, &dsty,
 199                                    &srcx, &srcy,
 200                                    &width, &height))
 201       return;
 202
 203    if (!intel_copy_texsubimage(intel_context(ctx), target,
 204                                intel_texture_image(texImage),
 205                                internalFormat, 0, 0, x, y, width, height))
 206       goto fail;
 207
 208    return;
 209
 210  fail:
 211    fallback_debug("%s - fallback to swrast\n", __FUNCTION__);
 212    _mesa_meta_CopyTexImage1D(ctx, target, level, internalFormat, x, y,
 213                              width, border);
 214 }
 215
 216
 217 static void
 218 intelCopyTexImage2D(struct gl_context * ctx, GLenum target, GLint level,
 219                     GLenum internalFormat,
 220                     GLint x, GLint y, GLsizei width, GLsizei height,
 221                     GLint border)
 222 {
 223    struct gl_texture_unit *texUnit = _mesa_get_current_tex_unit(ctx);
 224    struct gl_texture_object *texObj =
 225       _mesa_select_tex_object(ctx, texUnit, target);
 226    struct gl_texture_image *texImage =
 227       _mesa_select_tex_image(ctx, texObj, target, level);
 228    int srcx, srcy, dstx, dsty;
 229
 230    if (border)
 231       goto fail;
 232
 233    /* Setup or redefine the texture object, mipmap tree and texture
 234     * image.  Don't populate yet.
 235     */
 236    ctx->Driver.TexImage2D(ctx, target, level, internalFormat,
 237                           width, height, border,
 238                           GL_RGBA, GL_UNSIGNED_BYTE, NULL,
 239                           &ctx->DefaultPacking, texObj, texImage);
 240
 241    srcx = x;
 242    srcy = y;
 243    dstx = 0;
 244    dsty = 0;
 245    if (!_mesa_clip_copytexsubimage(ctx,
 246                                    &dstx, &dsty,
 247                                    &srcx, &srcy,
 248                                    &width, &height))
 249       return;
 250
 251    if (!intel_copy_texsubimage(intel_context(ctx), target,
 252                                intel_texture_image(texImage),
 253                                internalFormat, 0, 0, x, y, width, height))
 254       goto fail;
 255
 256    return;
 257
 258  fail:
 259    fallback_debug("%s - fallback to swrast\n", __FUNCTION__);
 260    _mesa_meta_CopyTexImage2D(ctx, target, level, internalFormat, x, y,
 261                              width, height, border);
 262 }
 263
 264
 265 static void
 266 intelCopyTexSubImage1D(struct gl_context * ctx, GLenum target, GLint level,
 267                        GLint xoffset, GLint x, GLint y, GLsizei width)
 268 {
 269    struct gl_texture_unit *texUnit = _mesa_get_current_tex_unit(ctx);
 270    struct gl_texture_object *texObj =
 271       _mesa_select_tex_object(ctx, texUnit, target);
 272    struct gl_texture_image *texImage =
 273       _mesa_select_tex_image(ctx, texObj, target, level);
 274    GLenum internalFormat = texImage->InternalFormat;
 275
 276    /* XXX need to check <border> as in above function? */
 277
 278    /* Need to check texture is compatible with source format.
 279     */
 280
 281    if (!intel_copy_texsubimage(intel_context(ctx), target,
 282                                intel_texture_image(texImage),
 283                                internalFormat, xoffset, 0, x, y, width, 1)) {
 284       fallback_debug("%s - fallback to swrast\n", __FUNCTION__);
 285       _mesa_meta_CopyTexSubImage1D(ctx, target, level, xoffset, x, y, width);
 286    }
 287 }
 288
 289
 290 static void
 291 intelCopyTexSubImage2D(struct gl_context * ctx, GLenum target, GLint level,
 292                        GLint xoffset, GLint yoffset,
 293                        GLint x, GLint y, GLsizei width, GLsizei height)
 294 {
 295    struct gl_texture_unit *texUnit = _mesa_get_current_tex_unit(ctx);
 296    struct gl_texture_object *texObj =
 297       _mesa_select_tex_object(ctx, texUnit, target);
 298    struct gl_texture_image *texImage =
 299       _mesa_select_tex_image(ctx, texObj, target, level);
 300    GLenum internalFormat = texImage->InternalFormat;
 301
 302    /* Need to check texture is compatible with source format.
 303     */
 304
 305    if (!intel_copy_texsubimage(intel_context(ctx), target,
 306                                intel_texture_image(texImage),
 307                                internalFormat,
 308                                xoffset, yoffset, x, y, width, height)) {
 309       fallback_debug("%s - fallback to swrast\n", __FUNCTION__);
 310       _mesa_meta_CopyTexSubImage2D(ctx, target, level,
 311                                    xoffset, yoffset, x, y, width, height);
 312    }
 313 }
 314
 315
 316 void
 317 intelInitTextureCopyImageFuncs(struct dd_function_table *functions)
 318 {
 319    functions->CopyTexImage1D = intelCopyTexImage1D;
 320    functions->CopyTexImage2D = intelCopyTexImage2D;
 321    functions->CopyTexSubImage1D = intelCopyTexSubImage1D;
 322    functions->CopyTexSubImage2D = intelCopyTexSubImage2D;
 323 }