src/gallium/drivers/i915/i915_surface.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 "i915_surface.h"
  29 #include "i915_resource.h"
  30 #include "i915_blit.h"
  31 #include "i915_screen.h"
  32 #include "pipe/p_defines.h"
  33 #include "util/u_inlines.h"
  34 #include "util/u_math.h"
  35 #include "util/u_format.h"
  36 #include "util/u_memory.h"
  37
  38
  39 /* Assumes all values are within bounds -- no checking at this level -
  40  * do it higher up if required.
  41  */
  42 static void
  43 i915_surface_copy(struct pipe_context *pipe,
  44                   struct pipe_surface *dst,
  45                   unsigned dstx, unsigned dsty,
  46                   struct pipe_surface *src,
  47                   unsigned srcx, unsigned srcy, unsigned width, unsigned height)
  48 {
  49    struct i915_texture *dst_tex = i915_texture(dst->texture);
  50    struct i915_texture *src_tex = i915_texture(src->texture);
  51    struct pipe_resource *dpt = &dst_tex->b.b;
  52    struct pipe_resource *spt = &src_tex->b.b;
  53
  54    assert( dst != src );
  55    assert( util_format_get_blocksize(dpt->format) == util_format_get_blocksize(spt->format) );
  56    assert( util_format_get_blockwidth(dpt->format) == util_format_get_blockwidth(spt->format) );
  57    assert( util_format_get_blockheight(dpt->format) == util_format_get_blockheight(spt->format) );
  58    assert( util_format_get_blockwidth(dpt->format) == 1 );
  59    assert( util_format_get_blockheight(dpt->format) == 1 );
  60
  61    i915_copy_blit( i915_context(pipe),
  62                    FALSE,
  63                    util_format_get_blocksize(dpt->format),
  64                    (unsigned short) src_tex->stride, src_tex->buffer, src->offset,
  65                    (unsigned short) dst_tex->stride, dst_tex->buffer, dst->offset,
  66                    (short) srcx, (short) srcy, (short) dstx, (short) dsty, (short) width, (short) height );
  67 }
  68
  69
  70 static void
  71 i915_surface_fill(struct pipe_context *pipe,
  72                   struct pipe_surface *dst,
  73                   unsigned dstx, unsigned dsty,
  74                   unsigned width, unsigned height, unsigned value)
  75 {
  76    struct i915_texture *tex = i915_texture(dst->texture);
  77    struct pipe_resource *pt = &tex->b.b;
  78
  79    assert(util_format_get_blockwidth(pt->format) == 1);
  80    assert(util_format_get_blockheight(pt->format) == 1);
  81
  82    i915_fill_blit( i915_context(pipe),
  83                    util_format_get_blocksize(pt->format),
  84                    (unsigned short) tex->stride,
  85                    tex->buffer, dst->offset,
  86                    (short) dstx, (short) dsty,
  87                    (short) width, (short) height,
  88                    value );
  89 }
  90
  91
  92 /*
  93  * Screen surface functions
  94  */
  95
  96
  97 static struct pipe_surface *
  98 i915_get_tex_surface(struct pipe_screen *screen,
  99                      struct pipe_resource *pt,
 100                      unsigned face, unsigned level, unsigned zslice,
 101                      unsigned flags)
 102 {
 103    struct i915_texture *tex = i915_texture(pt);
 104    struct pipe_surface *ps;
 105    unsigned offset;  /* in bytes */
 106
 107    if (pt->target == PIPE_TEXTURE_CUBE) {
 108       offset = tex->image_offset[level][face];
 109    }
 110    else if (pt->target == PIPE_TEXTURE_3D) {
 111       offset = tex->image_offset[level][zslice];
 112    }
 113    else {
 114       offset = tex->image_offset[level][0];
 115       assert(face == 0);
 116       assert(zslice == 0);
 117    }
 118
 119    ps = CALLOC_STRUCT(pipe_surface);
 120    if (ps) {
 121       pipe_reference_init(&ps->reference, 1);
 122       pipe_resource_reference(&ps->texture, pt);
 123       ps->format = pt->format;
 124       ps->width = u_minify(pt->width0, level);
 125       ps->height = u_minify(pt->height0, level);
 126       ps->offset = offset;
 127       ps->usage = flags;
 128    }
 129    return ps;
 130 }
 131
 132 static void
 133 i915_tex_surface_destroy(struct pipe_surface *surf)
 134 {
 135    pipe_resource_reference(&surf->texture, NULL);
 136    FREE(surf);
 137 }
 138
 139
 140 /* Probably going to make blits work on textures rather than surfaces.
 141  */
 142 void
 143 i915_init_surface_functions(struct i915_context *i915)
 144 {
 145    i915->base.surface_copy = i915_surface_copy;
 146    i915->base.surface_fill = i915_surface_fill;
 147 }
 148
 149 /* No good reason for these to be in the screen.
 150  */
 151 void
 152 i915_init_screen_surface_functions(struct i915_screen *is)
 153 {
 154    is->base.get_tex_surface = i915_get_tex_surface;
 155    is->base.tex_surface_destroy = i915_tex_surface_destroy;
 156 }