1 /**************************************************************************
3 * Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas.
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:
14 * The above copyright notice and this permission notice (including the
15 * next paragraph) shall be included in all copies or substantial portions
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.
26 **************************************************************************/
28 #include "i915_surface.h"
29 #include "i915_resource.h"
30 #include "i915_blit.h"
32 #include "i915_screen.h"
33 #include "pipe/p_defines.h"
34 #include "util/u_inlines.h"
35 #include "util/u_math.h"
36 #include "util/u_format.h"
37 #include "util/u_memory.h"
38 #include "util/u_pack_color.h"
41 /* Assumes all values are within bounds -- no checking at this level -
42 * do it higher up if required.
45 i915_surface_copy(struct pipe_context *pipe,
46 struct pipe_resource *dst, struct pipe_subresource subdst,
47 unsigned dstx, unsigned dsty, unsigned dstz,
48 struct pipe_resource *src, struct pipe_subresource subsrc,
49 unsigned srcx, unsigned srcy, unsigned srcz,
50 unsigned width, unsigned height)
52 struct i915_texture *dst_tex = i915_texture(dst);
53 struct i915_texture *src_tex = i915_texture(src);
54 struct pipe_resource *dpt = &dst_tex->b.b;
55 struct pipe_resource *spt = &src_tex->b.b;
56 unsigned dst_offset, src_offset; /* in bytes */
58 if (dst->target == PIPE_TEXTURE_CUBE) {
59 dst_offset = dst_tex->image_offset[subdst.level][subdst.face];
61 else if (dst->target == PIPE_TEXTURE_3D) {
62 dst_offset = dst_tex->image_offset[subdst.level][dstz];
65 dst_offset = dst_tex->image_offset[subdst.level][0];
66 assert(subdst.face == 0);
69 if (src->target == PIPE_TEXTURE_CUBE) {
70 src_offset = src_tex->image_offset[subsrc.level][subsrc.face];
72 else if (src->target == PIPE_TEXTURE_3D) {
73 src_offset = src_tex->image_offset[subsrc.level][srcz];
76 src_offset = src_tex->image_offset[subsrc.level][0];
77 assert(subsrc.face == 0);
83 assert( util_format_get_blocksize(dpt->format) == util_format_get_blocksize(spt->format) );
84 assert( util_format_get_blockwidth(dpt->format) == util_format_get_blockwidth(spt->format) );
85 assert( util_format_get_blockheight(dpt->format) == util_format_get_blockheight(spt->format) );
86 assert( util_format_get_blockwidth(dpt->format) == 1 );
87 assert( util_format_get_blockheight(dpt->format) == 1 );
89 i915_copy_blit( i915_context(pipe),
90 util_format_get_blocksize(dpt->format),
91 (unsigned short) src_tex->stride, src_tex->buffer, src_offset,
92 (unsigned short) dst_tex->stride, dst_tex->buffer, dst_offset,
93 (short) srcx, (short) srcy, (short) dstx, (short) dsty, (short) width, (short) height );
98 i915_clear_render_target(struct pipe_context *pipe,
99 struct pipe_surface *dst,
101 unsigned dstx, unsigned dsty,
102 unsigned width, unsigned height)
104 struct i915_texture *tex = i915_texture(dst->texture);
105 struct pipe_resource *pt = &tex->b.b;
108 assert(util_format_get_blockwidth(pt->format) == 1);
109 assert(util_format_get_blockheight(pt->format) == 1);
111 util_pack_color(rgba, dst->format, &uc);
112 i915_fill_blit( i915_context(pipe),
113 util_format_get_blocksize(pt->format),
114 XY_COLOR_BLT_WRITE_ALPHA | XY_COLOR_BLT_WRITE_RGB,
115 (unsigned short) tex->stride,
116 tex->buffer, dst->offset,
117 (short) dstx, (short) dsty,
118 (short) width, (short) height,
123 i915_clear_depth_stencil(struct pipe_context *pipe,
124 struct pipe_surface *dst,
125 unsigned clear_flags,
128 unsigned dstx, unsigned dsty,
129 unsigned width, unsigned height)
131 struct i915_texture *tex = i915_texture(dst->texture);
132 struct pipe_resource *pt = &tex->b.b;
136 assert(util_format_get_blockwidth(pt->format) == 1);
137 assert(util_format_get_blockheight(pt->format) == 1);
139 packedds = util_pack_z_stencil(dst->format, depth, stencil);
141 if (clear_flags & PIPE_CLEAR_DEPTH)
142 mask |= XY_COLOR_BLT_WRITE_RGB;
143 /* XXX presumably this does read-modify-write
144 (otherwise this won't work anyway). Hence will only want to
145 do it if really have stencil and it isn't cleared */
146 if (!((clear_flags & PIPE_CLEAR_STENCIL) ||
147 (dst->format != PIPE_FORMAT_Z24_UNORM_S8_USCALED)))
148 mask |= XY_COLOR_BLT_WRITE_ALPHA;
150 i915_fill_blit( i915_context(pipe),
151 util_format_get_blocksize(pt->format),
153 (unsigned short) tex->stride,
154 tex->buffer, dst->offset,
155 (short) dstx, (short) dsty,
156 (short) width, (short) height,
161 * Screen surface functions
165 static struct pipe_surface *
166 i915_get_tex_surface(struct pipe_screen *screen,
167 struct pipe_resource *pt,
168 unsigned face, unsigned level, unsigned zslice,
171 struct i915_texture *tex = i915_texture(pt);
172 struct pipe_surface *ps;
173 unsigned offset; /* in bytes */
175 if (pt->target == PIPE_TEXTURE_CUBE) {
176 offset = tex->image_offset[level][face];
178 else if (pt->target == PIPE_TEXTURE_3D) {
179 offset = tex->image_offset[level][zslice];
182 offset = tex->image_offset[level][0];
187 ps = CALLOC_STRUCT(pipe_surface);
189 pipe_reference_init(&ps->reference, 1);
190 pipe_resource_reference(&ps->texture, pt);
191 ps->format = pt->format;
192 ps->width = u_minify(pt->width0, level);
193 ps->height = u_minify(pt->height0, level);
201 i915_tex_surface_destroy(struct pipe_surface *surf)
203 pipe_resource_reference(&surf->texture, NULL);
209 i915_init_surface_functions(struct i915_context *i915)
211 i915->base.resource_copy_region = i915_surface_copy;
212 i915->base.clear_render_target = i915_clear_render_target;
213 i915->base.clear_depth_stencil = i915_clear_depth_stencil;
216 /* No good reason for these to be in the screen.
219 i915_init_screen_surface_functions(struct i915_screen *is)
221 is->base.get_tex_surface = i915_get_tex_surface;
222 is->base.tex_surface_destroy = i915_tex_surface_destroy;