2 * Mesa 3-D graphics library
5 * Copyright (C) 2010 LunarG Inc.
7 * Permission is hereby granted, free of charge, to any person obtaining a
8 * copy of this software and associated documentation files (the "Software"),
9 * to deal in the Software without restriction, including without limitation
10 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
11 * and/or sell copies of the Software, and to permit persons to whom the
12 * Software is furnished to do so, subject to the following conditions:
14 * The above copyright notice and this permission notice shall be included
15 * in all copies or substantial portions of the Software.
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
18 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
20 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
21 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
22 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
23 * DEALINGS IN THE SOFTWARE.
26 * Chia-I Wu <olv@lunarg.com>
29 #include "util/u_memory.h"
30 #include "util/u_inlines.h"
35 struct xmesa_st_framebuffer {
38 struct pipe_screen *screen;
40 struct st_visual stvis;
42 unsigned texture_width, texture_height, texture_mask;
43 struct pipe_resource *textures[ST_ATTACHMENT_COUNT];
45 struct pipe_surface *display_surface;
48 static INLINE struct xmesa_st_framebuffer *
49 xmesa_st_framebuffer(struct st_framebuffer_iface *stfbi)
51 return (struct xmesa_st_framebuffer *) stfbi->st_manager_private;
55 * Display an attachment to the xlib_drawable of the framebuffer.
58 xmesa_st_framebuffer_display(struct st_framebuffer_iface *stfbi,
59 enum st_attachment_type statt)
61 struct xmesa_st_framebuffer *xstfb = xmesa_st_framebuffer(stfbi);
62 struct pipe_resource *ptex = xstfb->textures[statt];
63 struct pipe_surface *psurf;
68 psurf = xstfb->display_surface;
69 /* (re)allocate the surface for the texture to be displayed */
70 if (!psurf || psurf->texture != ptex) {
71 pipe_surface_reference(&xstfb->display_surface, NULL);
73 psurf = xstfb->screen->get_tex_surface(xstfb->screen,
74 ptex, 0, 0, 0, PIPE_BIND_DISPLAY_TARGET);
78 xstfb->display_surface = psurf;
81 xstfb->screen->flush_frontbuffer(xstfb->screen, psurf, &xstfb->buffer->ws);
87 * Copy the contents between the attachments.
90 xmesa_st_framebuffer_copy_textures(struct st_framebuffer_iface *stfbi,
91 enum st_attachment_type src_statt,
92 enum st_attachment_type dst_statt,
93 unsigned x, unsigned y,
94 unsigned width, unsigned height)
96 struct xmesa_st_framebuffer *xstfb = xmesa_st_framebuffer(stfbi);
97 struct pipe_resource *src_ptex = xstfb->textures[src_statt];
98 struct pipe_resource *dst_ptex = xstfb->textures[dst_statt];
99 struct pipe_surface *src, *dst;
100 struct pipe_context *pipe;
102 if (!src_ptex || !dst_ptex)
105 pipe = xstfb->display->pipe;
107 pipe = xstfb->screen->context_create(xstfb->screen, NULL);
110 xstfb->display->pipe = pipe;
113 src = xstfb->screen->get_tex_surface(xstfb->screen,
114 src_ptex, 0, 0, 0, PIPE_BIND_BLIT_SOURCE);
115 dst = xstfb->screen->get_tex_surface(xstfb->screen,
116 dst_ptex, 0, 0, 0, PIPE_BIND_BLIT_DESTINATION);
119 pipe->surface_copy(pipe, dst, x, y, src, x, y, width, height);
121 pipe_surface_reference(&src, NULL);
122 pipe_surface_reference(&dst, NULL);
126 * Remove outdated textures and create the requested ones.
129 xmesa_st_framebuffer_validate_textures(struct st_framebuffer_iface *stfbi,
130 unsigned width, unsigned height,
133 struct xmesa_st_framebuffer *xstfb = xmesa_st_framebuffer(stfbi);
134 struct pipe_resource templ;
137 /* remove outdated textures */
138 if (xstfb->texture_width != width || xstfb->texture_height != height) {
139 for (i = 0; i < ST_ATTACHMENT_COUNT; i++)
140 pipe_resource_reference(&xstfb->textures[i], NULL);
143 memset(&templ, 0, sizeof(templ));
144 templ.target = PIPE_TEXTURE_2D;
145 templ.width0 = width;
146 templ.height0 = height;
148 templ.last_level = 0;
150 for (i = 0; i < ST_ATTACHMENT_COUNT; i++) {
151 enum pipe_format format;
154 /* the texture already exists or not requested */
155 if (xstfb->textures[i] || !(mask & (1 << i))) {
156 /* remember the texture */
157 if (xstfb->textures[i])
163 case ST_ATTACHMENT_FRONT_LEFT:
164 case ST_ATTACHMENT_BACK_LEFT:
165 case ST_ATTACHMENT_FRONT_RIGHT:
166 case ST_ATTACHMENT_BACK_RIGHT:
167 format = xstfb->stvis.color_format;
168 bind = PIPE_BIND_DISPLAY_TARGET |
169 PIPE_BIND_RENDER_TARGET;
171 case ST_ATTACHMENT_DEPTH_STENCIL:
172 format = xstfb->stvis.depth_stencil_format;
173 bind = PIPE_BIND_DEPTH_STENCIL;
176 format = PIPE_FORMAT_NONE;
180 if (format != PIPE_FORMAT_NONE) {
181 templ.format = format;
185 xstfb->screen->resource_create(xstfb->screen, &templ);
189 xstfb->texture_width = width;
190 xstfb->texture_height = height;
191 xstfb->texture_mask = mask;
195 xmesa_st_framebuffer_validate(struct st_framebuffer_iface *stfbi,
196 const enum st_attachment_type *statts,
198 struct pipe_resource **out)
200 struct xmesa_st_framebuffer *xstfb = xmesa_st_framebuffer(stfbi);
201 unsigned statt_mask, new_mask, i;
205 for (i = 0; i < count; i++)
206 statt_mask |= 1 << statts[i];
207 /* record newly allocated textures */
208 new_mask = statt_mask & ~xstfb->texture_mask;
210 resized = (xstfb->buffer->width != xstfb->texture_width ||
211 xstfb->buffer->height != xstfb->texture_height);
213 /* revalidate textures */
214 if (resized || new_mask) {
215 xmesa_st_framebuffer_validate_textures(stfbi,
216 xstfb->buffer->width, xstfb->buffer->height, statt_mask);
219 enum st_attachment_type back, front;
221 back = ST_ATTACHMENT_BACK_LEFT;
222 front = ST_ATTACHMENT_FRONT_LEFT;
223 /* copy the contents if front is newly allocated and back is not */
224 if ((statt_mask & (1 << back)) &&
225 (new_mask & (1 << front)) &&
226 !(new_mask & (1 << back))) {
227 xmesa_st_framebuffer_copy_textures(stfbi, back, front,
228 0, 0, xstfb->texture_width, xstfb->texture_height);
233 for (i = 0; i < count; i++) {
235 pipe_resource_reference(&out[i], xstfb->textures[statts[i]]);
242 xmesa_st_framebuffer_flush_front(struct st_framebuffer_iface *stfbi,
243 enum st_attachment_type statt)
245 struct xmesa_st_framebuffer *xstfb = xmesa_st_framebuffer(stfbi);
248 ret = xmesa_st_framebuffer_display(stfbi, statt);
250 xmesa_check_buffer_size(xstfb->buffer);
255 struct st_framebuffer_iface *
256 xmesa_create_st_framebuffer(XMesaDisplay xmdpy, XMesaBuffer b)
258 struct st_framebuffer_iface *stfbi;
259 struct xmesa_st_framebuffer *xstfb;
261 assert(xmdpy->display == b->xm_visual->display);
263 stfbi = CALLOC_STRUCT(st_framebuffer_iface);
264 xstfb = CALLOC_STRUCT(xmesa_st_framebuffer);
265 if (!stfbi || !xstfb) {
273 xstfb->display = xmdpy;
275 xstfb->screen = xmdpy->screen;
276 xstfb->stvis = b->xm_visual->stvis;
278 stfbi->visual = &xstfb->stvis;
279 stfbi->flush_front = xmesa_st_framebuffer_flush_front;
280 stfbi->validate = xmesa_st_framebuffer_validate;
281 stfbi->st_manager_private = (void *) xstfb;
287 xmesa_destroy_st_framebuffer(struct st_framebuffer_iface *stfbi)
289 struct xmesa_st_framebuffer *xstfb = xmesa_st_framebuffer(stfbi);
292 pipe_surface_reference(&xstfb->display_surface, NULL);
294 for (i = 0; i < ST_ATTACHMENT_COUNT; i++)
295 pipe_resource_reference(&xstfb->textures[i], NULL);
302 xmesa_swap_st_framebuffer(struct st_framebuffer_iface *stfbi)
304 struct xmesa_st_framebuffer *xstfb = xmesa_st_framebuffer(stfbi);
307 ret = xmesa_st_framebuffer_display(stfbi, ST_ATTACHMENT_BACK_LEFT);
309 struct pipe_resource **front, **back, *tmp;
311 front = &xstfb->textures[ST_ATTACHMENT_FRONT_LEFT];
312 back = &xstfb->textures[ST_ATTACHMENT_BACK_LEFT];
313 /* swap textures only if the front texture has been allocated */
320 xmesa_check_buffer_size(xstfb->buffer);
325 xmesa_copy_st_framebuffer(struct st_framebuffer_iface *stfbi,
326 enum st_attachment_type src,
327 enum st_attachment_type dst,
328 int x, int y, int w, int h)
330 xmesa_st_framebuffer_copy_textures(stfbi, src, dst, x, y, w, h);
331 if (dst == ST_ATTACHMENT_FRONT_LEFT)
332 xmesa_st_framebuffer_display(stfbi, dst);