workbench/libs/mesa/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_state.h"
  31 #include "i915_blit.h"
  32 #include "i915_reg.h"
  33 #include "i915_screen.h"
  34 #include "pipe/p_defines.h"
  35 #include "util/u_inlines.h"
  36 #include "util/u_math.h"
  37 #include "util/u_format.h"
  38 #include "util/u_memory.h"
  39 #include "util/u_pack_color.h"
  40 #include "util/u_surface.h"
  41
  42 /*
  43  * surface functions using the render engine
  44  */
  45
  46 static void
  47 i915_surface_copy_render(struct pipe_context *pipe,
  48                          struct pipe_resource *dst, unsigned dst_level,
  49                          unsigned dstx, unsigned dsty, unsigned dstz,
  50                          struct pipe_resource *src, unsigned src_level,
  51                          const struct pipe_box *src_box)
  52 {
  53    struct i915_context *i915 = i915_context(pipe);
  54
  55    /* Fallback for buffers. */
  56    if (dst->target == PIPE_BUFFER && src->target == PIPE_BUFFER) {
  57       util_resource_copy_region(pipe, dst, dst_level, dstx, dsty, dstz,
  58                                 src, src_level, src_box);
  59       return;
  60    }
  61
  62    util_blitter_save_blend(i915->blitter, (void *)i915->blend);
  63    util_blitter_save_depth_stencil_alpha(i915->blitter, (void *)i915->depth_stencil);
  64    util_blitter_save_stencil_ref(i915->blitter, &i915->stencil_ref);
  65    util_blitter_save_rasterizer(i915->blitter, (void *)i915->rasterizer);
  66    util_blitter_save_fragment_shader(i915->blitter, i915->saved_fs);
  67    util_blitter_save_vertex_shader(i915->blitter, i915->saved_vs);
  68    util_blitter_save_viewport(i915->blitter, &i915->viewport);
  69    util_blitter_save_clip(i915->blitter, &i915->saved_clip);
  70    util_blitter_save_vertex_elements(i915->blitter, i915->saved_velems);
  71    util_blitter_save_vertex_buffers(i915->blitter, i915->saved_nr_vertex_buffers,
  72                                     i915->saved_vertex_buffers);
  73
  74    util_blitter_save_framebuffer(i915->blitter, &i915->framebuffer);
  75
  76    util_blitter_save_fragment_sampler_states(i915->blitter,
  77                                              i915->saved_nr_samplers,
  78                                              i915->saved_samplers);
  79    util_blitter_save_fragment_sampler_views(i915->blitter,
  80                                             i915->saved_nr_sampler_views,
  81                                             i915->saved_sampler_views);
  82
  83    util_blitter_copy_region(i915->blitter, dst, dst_level, dstx, dsty, dstz,
  84                             src, src_level, src_box, TRUE);
  85 }
  86
  87 static void
  88 i915_clear_render_target_render(struct pipe_context *pipe,
  89                                 struct pipe_surface *dst,
  90                                 const float *rgba,
  91                                 unsigned dstx, unsigned dsty,
  92                                 unsigned width, unsigned height)
  93 {
  94    struct i915_context *i915 = i915_context(pipe);
  95    struct pipe_framebuffer_state fb_state;
  96
  97    util_blitter_save_framebuffer(i915->blitter, &i915->framebuffer);
  98
  99    fb_state.width = dst->width;
 100    fb_state.height = dst->height;
 101    fb_state.nr_cbufs = 1;
 102    fb_state.cbufs[0] = dst;
 103    fb_state.zsbuf = NULL;
 104    pipe->set_framebuffer_state(pipe, &fb_state);
 105
 106    if (i915->dirty)
 107       i915_update_derived(i915);
 108
 109    i915_clear_emit(pipe, PIPE_CLEAR_COLOR, rgba, 0.0, 0x0,
 110                    dstx, dsty, width, height);
 111
 112    pipe->set_framebuffer_state(pipe, &i915->blitter->saved_fb_state);
 113    util_unreference_framebuffer_state(&i915->blitter->saved_fb_state);
 114    i915->blitter->saved_fb_state.nr_cbufs = ~0;
 115 }
 116
 117 static void
 118 i915_clear_depth_stencil_render(struct pipe_context *pipe,
 119                                 struct pipe_surface *dst,
 120                                 unsigned clear_flags,
 121                                 double depth,
 122                                 unsigned stencil,
 123                                 unsigned dstx, unsigned dsty,
 124                                 unsigned width, unsigned height)
 125 {
 126    struct i915_context *i915 = i915_context(pipe);
 127    struct pipe_framebuffer_state fb_state;
 128
 129    util_blitter_save_framebuffer(i915->blitter, &i915->framebuffer);
 130
 131    fb_state.width = dst->width;
 132    fb_state.height = dst->height;
 133    fb_state.nr_cbufs = 0;
 134    fb_state.zsbuf = dst;
 135    pipe->set_framebuffer_state(pipe, &fb_state);
 136
 137    if (i915->dirty)
 138       i915_update_derived(i915);
 139
 140    i915_clear_emit(pipe, clear_flags & PIPE_CLEAR_DEPTHSTENCIL,
 141                    NULL, depth, stencil,
 142                    dstx, dsty, width, height);
 143
 144    pipe->set_framebuffer_state(pipe, &i915->blitter->saved_fb_state);
 145    util_unreference_framebuffer_state(&i915->blitter->saved_fb_state);
 146    i915->blitter->saved_fb_state.nr_cbufs = ~0;
 147 }
 148
 149 /*
 150  * surface functions using the blitter
 151  */
 152
 153 /* Assumes all values are within bounds -- no checking at this level -
 154  * do it higher up if required.
 155  */
 156 static void
 157 i915_surface_copy_blitter(struct pipe_context *pipe,
 158                           struct pipe_resource *dst, unsigned dst_level,
 159                           unsigned dstx, unsigned dsty, unsigned dstz,
 160                           struct pipe_resource *src, unsigned src_level,
 161                           const struct pipe_box *src_box)
 162 {
 163    struct i915_texture *dst_tex = i915_texture(dst);
 164    struct i915_texture *src_tex = i915_texture(src);
 165    struct pipe_resource *dpt = &dst_tex->b.b;
 166    struct pipe_resource *spt = &src_tex->b.b;
 167    unsigned dst_offset, src_offset;  /* in bytes */
 168
 169    /* Fallback for buffers. */
 170    if (dst->target == PIPE_BUFFER && src->target == PIPE_BUFFER) {
 171       util_resource_copy_region(pipe, dst, dst_level, dstx, dsty, dstz,
 172                                 src, src_level, src_box);
 173       return;
 174    }
 175
 176    /* XXX cannot copy 3d regions at this time */
 177    assert(src_box->depth == 1);
 178    if (dst->target != PIPE_TEXTURE_CUBE &&
 179        dst->target != PIPE_TEXTURE_3D)
 180       assert(dstz == 0);
 181    dst_offset = i915_texture_offset(dst_tex, dst_level, dstz);
 182
 183    if (src->target != PIPE_TEXTURE_CUBE &&
 184        src->target != PIPE_TEXTURE_3D)
 185       assert(src_box->z == 0);
 186    src_offset = i915_texture_offset(src_tex, src_level, src_box->z);
 187
 188    assert( util_format_get_blocksize(dpt->format) == util_format_get_blocksize(spt->format) );
 189    assert( util_format_get_blockwidth(dpt->format) == util_format_get_blockwidth(spt->format) );
 190    assert( util_format_get_blockheight(dpt->format) == util_format_get_blockheight(spt->format) );
 191    assert( util_format_get_blockwidth(dpt->format) == 1 );
 192    assert( util_format_get_blockheight(dpt->format) == 1 );
 193
 194    i915_copy_blit( i915_context(pipe),
 195                    util_format_get_blocksize(dpt->format),
 196                    (unsigned short) src_tex->stride, src_tex->buffer, src_offset,
 197                    (unsigned short) dst_tex->stride, dst_tex->buffer, dst_offset,
 198                    (short) src_box->x, (short) src_box->y, (short) dstx, (short) dsty,
 199                    (short) src_box->width, (short) src_box->height );
 200 }
 201
 202 static void
 203 i915_clear_render_target_blitter(struct pipe_context *pipe,
 204                                  struct pipe_surface *dst,
 205                                  const float *rgba,
 206                                  unsigned dstx, unsigned dsty,
 207                                  unsigned width, unsigned height)
 208 {
 209    struct i915_texture *tex = i915_texture(dst->texture);
 210    struct pipe_resource *pt = &tex->b.b;
 211    union util_color uc;
 212    unsigned offset = i915_texture_offset(tex, dst->u.tex.level, dst->u.tex.first_layer);
 213
 214    assert(util_format_get_blockwidth(pt->format) == 1);
 215    assert(util_format_get_blockheight(pt->format) == 1);
 216
 217    util_pack_color(rgba, dst->format, &uc);
 218    i915_fill_blit( i915_context(pipe),
 219                    util_format_get_blocksize(pt->format),
 220                    XY_COLOR_BLT_WRITE_ALPHA | XY_COLOR_BLT_WRITE_RGB,
 221                    (unsigned short) tex->stride,
 222                    tex->buffer, offset,
 223                    (short) dstx, (short) dsty,
 224                    (short) width, (short) height,
 225                    uc.ui );
 226 }
 227
 228 static void
 229 i915_clear_depth_stencil_blitter(struct pipe_context *pipe,
 230                                  struct pipe_surface *dst,
 231                                  unsigned clear_flags,
 232                                  double depth,
 233                                  unsigned stencil,
 234                                  unsigned dstx, unsigned dsty,
 235                                  unsigned width, unsigned height)
 236 {
 237    struct i915_texture *tex = i915_texture(dst->texture);
 238    struct pipe_resource *pt = &tex->b.b;
 239    unsigned packedds;
 240    unsigned mask = 0;
 241    unsigned offset = i915_texture_offset(tex, dst->u.tex.level, dst->u.tex.first_layer);
 242
 243    assert(util_format_get_blockwidth(pt->format) == 1);
 244    assert(util_format_get_blockheight(pt->format) == 1);
 245
 246    packedds = util_pack_z_stencil(dst->format, depth, stencil);
 247
 248    if (clear_flags & PIPE_CLEAR_DEPTH)
 249       mask |= XY_COLOR_BLT_WRITE_RGB;
 250    /* XXX presumably this does read-modify-write
 251       (otherwise this won't work anyway). Hence will only want to
 252       do it if really have stencil and it isn't cleared */
 253    if ((clear_flags & PIPE_CLEAR_STENCIL) ||
 254        (dst->format != PIPE_FORMAT_Z24_UNORM_S8_USCALED))
 255       mask |= XY_COLOR_BLT_WRITE_ALPHA;
 256
 257    i915_fill_blit( i915_context(pipe),
 258                    util_format_get_blocksize(pt->format),
 259                    mask,
 260                    (unsigned short) tex->stride,
 261                    tex->buffer, offset,
 262                    (short) dstx, (short) dsty,
 263                    (short) width, (short) height,
 264                    packedds );
 265 }
 266
 267 /*
 268  * Screen surface functions
 269  */
 270
 271
 272 static struct pipe_surface *
 273 i915_create_surface(struct pipe_context *ctx,
 274                     struct pipe_resource *pt,
 275                     const struct pipe_surface *surf_tmpl)
 276 {
 277    struct pipe_surface *ps;
 278
 279    assert(surf_tmpl->u.tex.first_layer == surf_tmpl->u.tex.last_layer);
 280    if (pt->target != PIPE_TEXTURE_CUBE &&
 281        pt->target != PIPE_TEXTURE_3D)
 282       assert(surf_tmpl->u.tex.first_layer == 0);
 283
 284    ps = CALLOC_STRUCT(pipe_surface);
 285    if (ps) {
 286       /* could subclass pipe_surface and store offset as it used to do */
 287       pipe_reference_init(&ps->reference, 1);
 288       pipe_resource_reference(&ps->texture, pt);
 289       ps->format = surf_tmpl->format;
 290       ps->width = u_minify(pt->width0, surf_tmpl->u.tex.level);
 291       ps->height = u_minify(pt->height0, surf_tmpl->u.tex.level);
 292       ps->u.tex.level = surf_tmpl->u.tex.level;
 293       ps->u.tex.first_layer = surf_tmpl->u.tex.first_layer;
 294       ps->u.tex.last_layer = surf_tmpl->u.tex.last_layer;
 295       ps->usage = surf_tmpl->usage;
 296       ps->context = ctx;
 297    }
 298    return ps;
 299 }
 300
 301 static void
 302 i915_surface_destroy(struct pipe_context *ctx,
 303                      struct pipe_surface *surf)
 304 {
 305    pipe_resource_reference(&surf->texture, NULL);
 306    FREE(surf);
 307 }
 308
 309
 310 void
 311 i915_init_surface_functions(struct i915_context *i915)
 312 {
 313    if (i915_screen(i915->base.screen)->debug.use_blitter) {
 314       i915->base.resource_copy_region = i915_surface_copy_blitter;
 315       i915->base.clear_render_target = i915_clear_render_target_blitter;
 316       i915->base.clear_depth_stencil = i915_clear_depth_stencil_blitter;
 317    } else {
 318       i915->base.resource_copy_region = i915_surface_copy_render;
 319       i915->base.clear_render_target = i915_clear_render_target_render;
 320       i915->base.clear_depth_stencil = i915_clear_depth_stencil_render;
 321    }
 322    i915->base.create_surface = i915_create_surface;
 323    i915->base.surface_destroy = i915_surface_destroy;
 324 }