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_buffers.h"
  39 #include "intel_mipmap_tree.h"
  40 #include "intel_regions.h"
  41 #include "intel_fbo.h"
  42 #include "intel_tex.h"
  43 #include "intel_blit.h"
  44
  45 #define FILE_DEBUG_FLAG DEBUG_TEXTURE
  46
  47 /**
  48  * Get the intel_region which is the source for any glCopyTex[Sub]Image call.
  49  *
  50  * Do the best we can using the blitter.  A future project is to use
  51  * the texture engine and fragment programs for these copies.
  52  */
  53 static struct intel_renderbuffer *
  54 get_teximage_readbuffer(struct intel_context *intel, GLenum internalFormat)
  55 {
  56    DBG("%s %s\n", __FUNCTION__,
  57        _mesa_lookup_enum_by_nr(internalFormat));
  58
  59    switch (internalFormat) {
  60    case GL_DEPTH_COMPONENT:
  61    case GL_DEPTH_COMPONENT16:
  62    case GL_DEPTH24_STENCIL8_EXT:
  63    case GL_DEPTH_STENCIL_EXT:
  64       return intel_get_renderbuffer(intel->ctx.ReadBuffer, BUFFER_DEPTH);
  65    default:
  66       return intel_renderbuffer(intel->ctx.ReadBuffer->_ColorReadBuffer);
  67    }
  68 }
  69
  70
  71 static GLboolean
  72 do_copy_texsubimage(struct intel_context *intel,
  73                     GLenum target,
  74                     struct intel_texture_image *intelImage,
  75                     GLenum internalFormat,
  76                     GLint dstx, GLint dsty,
  77                     GLint x, GLint y, GLsizei width, GLsizei height)
  78 {
  79    struct gl_context *ctx = &intel->ctx;
  80    struct intel_renderbuffer *irb;
  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    if (irb->Base.Format == MESA_FORMAT_XRGB8888 &&
  94        intelImage->base.TexFormat == MESA_FORMAT_ARGB8888) {
  95       copy_supported_with_alpha_override = true;
  96    }
  97
  98    if (intelImage->base.TexFormat != irb->Base.Format &&
  99        !copy_supported_with_alpha_override) {
 100       if (unlikely(INTEL_DEBUG & DEBUG_FALLBACKS))
 101          fprintf(stderr, "%s mismatched formats %s, %s\n",
 102                  __FUNCTION__,
 103                  _mesa_get_format_name(intelImage->base.TexFormat),
 104                  _mesa_get_format_name(irb->Base.Format));
 105       return GL_FALSE;
 106    }
 107
 108    {
 109       drm_intel_bo *dst_bo = intel_region_buffer(intel,
 110                                                  intelImage->mt->region,
 111                                                  INTEL_WRITE_PART);
 112       GLuint image_x, image_y;
 113       GLshort src_pitch;
 114
 115       /* get dest x/y in destination texture */
 116       intel_miptree_get_image_offset(intelImage->mt,
 117                                      intelImage->level,
 118                                      intelImage->face,
 119                                      0,
 120                                      &image_x, &image_y);
 121
 122       /* The blitter can't handle Y-tiled buffers. */
 123       if (intelImage->mt->region->tiling == I915_TILING_Y) {
 124          return GL_FALSE;
 125       }
 126
 127       if (ctx->ReadBuffer->Name == 0) {
 128          /* Flip vertical orientation for system framebuffers */
 129          y = ctx->ReadBuffer->Height - (y + height);
 130          src_pitch = -irb->region->pitch;
 131       } else {
 132          /* reading from a FBO, y is already oriented the way we like */
 133          src_pitch = irb->region->pitch;
 134       }
 135
 136       /* blit from src buffer to texture */
 137       if (!intelEmitCopyBlit(intel,
 138                              intelImage->mt->cpp,
 139                              src_pitch,
 140                              irb->region->buffer,
 141                              0,
 142                              irb->region->tiling,
 143                              intelImage->mt->region->pitch,
 144                              dst_bo,
 145                              0,
 146                              intelImage->mt->region->tiling,
 147                              irb->region->draw_x + x, irb->region->draw_y + y,
 148                              image_x + dstx, image_y + dsty,
 149                              width, height,
 150                              GL_COPY)) {
 151          return GL_FALSE;
 152       }
 153    }
 154
 155    if (copy_supported_with_alpha_override)
 156       intel_set_teximage_alpha_to_one(ctx, intelImage);
 157
 158    return GL_TRUE;
 159 }
 160
 161
 162 static void
 163 intelCopyTexImage1D(struct gl_context * ctx, GLenum target, GLint level,
 164                     GLenum internalFormat,
 165                     GLint x, GLint y, GLsizei width, GLint border)
 166 {
 167    struct gl_texture_unit *texUnit = _mesa_get_current_tex_unit(ctx);
 168    struct gl_texture_object *texObj =
 169       _mesa_select_tex_object(ctx, texUnit, target);
 170    struct gl_texture_image *texImage =
 171       _mesa_select_tex_image(ctx, texObj, target, level);
 172    int srcx, srcy, dstx, dsty, height;
 173
 174    if (border)
 175       goto fail;
 176
 177    /* Setup or redefine the texture object, mipmap tree and texture
 178     * image.  Don't populate yet.
 179     */
 180    ctx->Driver.TexImage1D(ctx, target, level, internalFormat,
 181                           width, border,
 182                           GL_RGBA, CHAN_TYPE, NULL,
 183                           &ctx->DefaultPacking, texObj, texImage);
 184    srcx = x;
 185    srcy = y;
 186    dstx = 0;
 187    dsty = 0;
 188    height = 1;
 189    if (!_mesa_clip_copytexsubimage(ctx,
 190                                    &dstx, &dsty,
 191                                    &srcx, &srcy,
 192                                    &width, &height))
 193       return;
 194
 195    if (!do_copy_texsubimage(intel_context(ctx), target,
 196                             intel_texture_image(texImage),
 197                             internalFormat, 0, 0, x, y, width, height))
 198       goto fail;
 199
 200    return;
 201
 202  fail:
 203    fallback_debug("%s - fallback to swrast\n", __FUNCTION__);
 204    _mesa_meta_CopyTexImage1D(ctx, target, level, internalFormat, x, y,
 205                              width, border);
 206 }
 207
 208
 209 static void
 210 intelCopyTexImage2D(struct gl_context * ctx, GLenum target, GLint level,
 211                     GLenum internalFormat,
 212                     GLint x, GLint y, GLsizei width, GLsizei height,
 213                     GLint border)
 214 {
 215    struct gl_texture_unit *texUnit = _mesa_get_current_tex_unit(ctx);
 216    struct gl_texture_object *texObj =
 217       _mesa_select_tex_object(ctx, texUnit, target);
 218    struct gl_texture_image *texImage =
 219       _mesa_select_tex_image(ctx, texObj, target, level);
 220    int srcx, srcy, dstx, dsty;
 221
 222    if (border)
 223       goto fail;
 224
 225    /* Setup or redefine the texture object, mipmap tree and texture
 226     * image.  Don't populate yet.
 227     */
 228    ctx->Driver.TexImage2D(ctx, target, level, internalFormat,
 229                           width, height, border,
 230                           GL_RGBA, GL_UNSIGNED_BYTE, NULL,
 231                           &ctx->DefaultPacking, texObj, texImage);
 232
 233    srcx = x;
 234    srcy = y;
 235    dstx = 0;
 236    dsty = 0;
 237    if (!_mesa_clip_copytexsubimage(ctx,
 238                                    &dstx, &dsty,
 239                                    &srcx, &srcy,
 240                                    &width, &height))
 241       return;
 242
 243    if (!do_copy_texsubimage(intel_context(ctx), target,
 244                             intel_texture_image(texImage),
 245                             internalFormat, 0, 0, x, y, width, height))
 246       goto fail;
 247
 248    return;
 249
 250  fail:
 251    fallback_debug("%s - fallback to swrast\n", __FUNCTION__);
 252    _mesa_meta_CopyTexImage2D(ctx, target, level, internalFormat, x, y,
 253                              width, height, border);
 254 }
 255
 256
 257 static void
 258 intelCopyTexSubImage1D(struct gl_context * ctx, GLenum target, GLint level,
 259                        GLint xoffset, GLint x, GLint y, GLsizei width)
 260 {
 261    struct gl_texture_unit *texUnit = _mesa_get_current_tex_unit(ctx);
 262    struct gl_texture_object *texObj =
 263       _mesa_select_tex_object(ctx, texUnit, target);
 264    struct gl_texture_image *texImage =
 265       _mesa_select_tex_image(ctx, texObj, target, level);
 266    GLenum internalFormat = texImage->InternalFormat;
 267
 268    /* XXX need to check <border> as in above function? */
 269
 270    /* Need to check texture is compatible with source format.
 271     */
 272
 273    if (!do_copy_texsubimage(intel_context(ctx), target,
 274                             intel_texture_image(texImage),
 275                             internalFormat, xoffset, 0, x, y, width, 1)) {
 276       fallback_debug("%s - fallback to swrast\n", __FUNCTION__);
 277       _mesa_meta_CopyTexSubImage1D(ctx, target, level, xoffset, x, y, width);
 278    }
 279 }
 280
 281
 282 static void
 283 intelCopyTexSubImage2D(struct gl_context * ctx, GLenum target, GLint level,
 284                        GLint xoffset, GLint yoffset,
 285                        GLint x, GLint y, GLsizei width, GLsizei height)
 286 {
 287    struct gl_texture_unit *texUnit = _mesa_get_current_tex_unit(ctx);
 288    struct gl_texture_object *texObj =
 289       _mesa_select_tex_object(ctx, texUnit, target);
 290    struct gl_texture_image *texImage =
 291       _mesa_select_tex_image(ctx, texObj, target, level);
 292    GLenum internalFormat = texImage->InternalFormat;
 293
 294    /* Need to check texture is compatible with source format.
 295     */
 296
 297    if (!do_copy_texsubimage(intel_context(ctx), target,
 298                             intel_texture_image(texImage),
 299                             internalFormat,
 300                             xoffset, yoffset, x, y, width, height)) {
 301
 302       fallback_debug("%s - fallback to swrast\n", __FUNCTION__);
 303       _mesa_meta_CopyTexSubImage2D(ctx, target, level,
 304                                    xoffset, yoffset, x, y, width, height);
 305    }
 306 }
 307
 308
 309 void
 310 intelInitTextureCopyImageFuncs(struct dd_function_table *functions)
 311 {
 312    functions->CopyTexImage1D = intelCopyTexImage1D;
 313    functions->CopyTexImage2D = intelCopyTexImage2D;
 314    functions->CopyTexSubImage1D = intelCopyTexSubImage1D;
 315    functions->CopyTexSubImage2D = intelCopyTexSubImage2D;
 316 }