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
18 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
20 * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
21 * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
22 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
25 * Chia-I Wu <olv@lunarg.com>
28 #include "util/u_memory.h"
29 #include "util/u_inlines.h"
30 #include "state_tracker/st_gl_api.h" /* for st_gl_api_create */
33 #include "stw_device.h"
34 #include "stw_framebuffer.h"
35 #include "stw_pixelformat.h"
37 struct stw_st_framebuffer {
38 struct st_framebuffer_iface base;
40 struct stw_framebuffer *fb;
41 struct st_visual stvis;
43 struct pipe_resource *textures[ST_ATTACHMENT_COUNT];
44 unsigned texture_width, texture_height;
45 unsigned texture_mask;
48 static INLINE struct stw_st_framebuffer *
49 stw_st_framebuffer(struct st_framebuffer_iface *stfb)
51 return (struct stw_st_framebuffer *) stfb;
55 * Remove outdated textures and create the requested ones.
58 stw_st_framebuffer_validate_locked(struct st_framebuffer_iface *stfb,
59 unsigned width, unsigned height,
62 struct stw_st_framebuffer *stwfb = stw_st_framebuffer(stfb);
63 struct pipe_resource templ;
66 /* remove outdated textures */
67 if (stwfb->texture_width != width || stwfb->texture_height != height) {
68 for (i = 0; i < ST_ATTACHMENT_COUNT; i++)
69 pipe_resource_reference(&stwfb->textures[i], NULL);
72 memset(&templ, 0, sizeof(templ));
73 templ.target = PIPE_TEXTURE_2D;
75 templ.height0 = height;
80 for (i = 0; i < ST_ATTACHMENT_COUNT; i++) {
81 enum pipe_format format;
84 /* the texture already exists or not requested */
85 if (stwfb->textures[i] || !(mask & (1 << i))) {
86 /* remember the texture */
87 if (stwfb->textures[i])
93 case ST_ATTACHMENT_FRONT_LEFT:
94 case ST_ATTACHMENT_BACK_LEFT:
95 format = stwfb->stvis.color_format;
96 bind = PIPE_BIND_DISPLAY_TARGET |
97 PIPE_BIND_RENDER_TARGET;
99 case ST_ATTACHMENT_DEPTH_STENCIL:
100 format = stwfb->stvis.depth_stencil_format;
101 bind = PIPE_BIND_DEPTH_STENCIL;
104 format = PIPE_FORMAT_NONE;
108 if (format != PIPE_FORMAT_NONE) {
109 templ.format = format;
113 stw_dev->screen->resource_create(stw_dev->screen, &templ);
117 stwfb->texture_width = width;
118 stwfb->texture_height = height;
119 stwfb->texture_mask = mask;
123 stw_st_framebuffer_validate(struct st_framebuffer_iface *stfb,
124 const enum st_attachment_type *statts,
126 struct pipe_resource **out)
128 struct stw_st_framebuffer *stwfb = stw_st_framebuffer(stfb);
129 unsigned statt_mask, i;
132 for (i = 0; i < count; i++)
133 statt_mask |= 1 << statts[i];
135 pipe_mutex_lock(stwfb->fb->mutex);
137 if (stwfb->fb->must_resize || (statt_mask & ~stwfb->texture_mask)) {
138 stw_st_framebuffer_validate_locked(&stwfb->base,
139 stwfb->fb->width, stwfb->fb->height, statt_mask);
140 stwfb->fb->must_resize = FALSE;
143 for (i = 0; i < count; i++) {
145 pipe_resource_reference(&out[i], stwfb->textures[statts[i]]);
148 stw_framebuffer_release(stwfb->fb);
154 * Present an attachment of the framebuffer.
157 stw_st_framebuffer_present_locked(HDC hdc,
158 struct st_framebuffer_iface *stfb,
159 enum st_attachment_type statt)
161 struct stw_st_framebuffer *stwfb = stw_st_framebuffer(stfb);
162 struct pipe_resource *resource;
164 resource = stwfb->textures[statt];
166 stw_framebuffer_present_locked(hdc, stwfb->fb, resource);
173 stw_st_framebuffer_flush_front(struct st_framebuffer_iface *stfb,
174 enum st_attachment_type statt)
176 struct stw_st_framebuffer *stwfb = stw_st_framebuffer(stfb);
178 pipe_mutex_lock(stwfb->fb->mutex);
180 return stw_st_framebuffer_present_locked(stwfb->fb->hDC, &stwfb->base, statt);
184 * Create a framebuffer interface.
186 struct st_framebuffer_iface *
187 stw_st_create_framebuffer(struct stw_framebuffer *fb)
189 struct stw_st_framebuffer *stwfb;
191 stwfb = CALLOC_STRUCT(stw_st_framebuffer);
196 stwfb->stvis = fb->pfi->stvis;
198 stwfb->base.visual = &stwfb->stvis;
199 stwfb->base.flush_front = stw_st_framebuffer_flush_front;
200 stwfb->base.validate = stw_st_framebuffer_validate;
206 * Destroy a framebuffer interface.
209 stw_st_destroy_framebuffer_locked(struct st_framebuffer_iface *stfb)
211 struct stw_st_framebuffer *stwfb = stw_st_framebuffer(stfb);
214 for (i = 0; i < ST_ATTACHMENT_COUNT; i++)
215 pipe_resource_reference(&stwfb->textures[i], NULL);
221 * Swap the buffers of the given framebuffer.
224 stw_st_swap_framebuffer_locked(HDC hdc, struct st_framebuffer_iface *stfb)
226 struct stw_st_framebuffer *stwfb = stw_st_framebuffer(stfb);
227 unsigned front = ST_ATTACHMENT_FRONT_LEFT, back = ST_ATTACHMENT_BACK_LEFT;
228 struct pipe_resource *ptex;
231 /* swap the textures */
232 ptex = stwfb->textures[front];
233 stwfb->textures[front] = stwfb->textures[back];
234 stwfb->textures[back] = ptex;
236 /* convert to mask */
240 /* swap the bits in mask */
241 mask = stwfb->texture_mask & ~(front | back);
242 if (stwfb->texture_mask & front)
244 if (stwfb->texture_mask & back)
246 stwfb->texture_mask = mask;
248 front = ST_ATTACHMENT_FRONT_LEFT;
249 return stw_st_framebuffer_present_locked(hdc, &stwfb->base, front);
253 * Create an st_api of the state tracker.
256 stw_st_create_api(void)
258 return st_gl_api_create();