stw_st.c revision e5ffa9aa474b40a17a2b3206a29fdc7540637c5e
1/* 2 * Mesa 3-D graphics library 3 * Version: 7.9 4 * 5 * Copyright (C) 2010 LunarG Inc. 6 * 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: 13 * 14 * The above copyright notice and this permission notice shall be included 15 * in all copies or substantial portions of the Software. 16 * 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. 23 * 24 * Authors: 25 * Chia-I Wu <olv@lunarg.com> 26 */ 27 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 */ 31 32#include "stw_st.h" 33#include "stw_device.h" 34#include "stw_framebuffer.h" 35#include "stw_pixelformat.h" 36 37struct stw_st_framebuffer { 38 struct st_framebuffer_iface base; 39 40 struct stw_framebuffer *fb; 41 struct st_visual stvis; 42 43 struct pipe_resource *textures[ST_ATTACHMENT_COUNT]; 44 unsigned texture_width, texture_height; 45 unsigned texture_mask; 46}; 47 48static INLINE struct stw_st_framebuffer * 49stw_st_framebuffer(struct st_framebuffer_iface *stfb) 50{ 51 return (struct stw_st_framebuffer *) stfb; 52} 53 54/** 55 * Remove outdated textures and create the requested ones. 56 */ 57static void 58stw_st_framebuffer_validate_locked(struct st_framebuffer_iface *stfb, 59 unsigned width, unsigned height, 60 unsigned mask) 61{ 62 struct stw_st_framebuffer *stwfb = stw_st_framebuffer(stfb); 63 struct pipe_resource templ; 64 unsigned i; 65 66 /* remove outdated textures */ 67 if (stwfb-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); 70 } 71 72 memset(&templ, 0, sizeof(templ)); 73 templ.target = PIPE_TEXTURE_2D; 74 templ.width0 = width; 75 templ.height0 = height; 76 templ.depth0 = 1; 77 templ.array_size = 1; 78 templ.last_level = 0; 79 80 for (i = 0; i < ST_ATTACHMENT_COUNT; i++) { 81 enum pipe_format format; 82 unsigned bind; 83 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]) 88 mask |= (1 << i); 89 continue; 90 } 91 92 switch (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; 98 break; 99 case ST_ATTACHMENT_DEPTH_STENCIL: 100 format = stwfb->stvis.depth_stencil_format; 101 bind = PIPE_BIND_DEPTH_STENCIL; 102 break; 103 default: 104 format = PIPE_FORMAT_NONE; 105 break; 106 } 107 108 if (format != PIPE_FORMAT_NONE) { 109 templ.format = format; 110 templ.bind = bind; 111 112 stwfb->textures[i] = 113 stw_dev->screen->resource_create(stw_dev->screen, &templ); 114 } 115 } 116 117 stwfb->texture_width = width; 118 stwfb->texture_height = height; 119 stwfb->texture_mask = mask; 120} 121 122static boolean 123stw_st_framebuffer_validate(struct st_framebuffer_iface *stfb, 124 const enum st_attachment_type *statts, 125 unsigned count, 126 struct pipe_resource **out) 127{ 128 struct stw_st_framebuffer *stwfb = stw_st_framebuffer(stfb); 129 unsigned statt_mask, i; 130 131 statt_mask = 0x0; 132 for (i = 0; i < count; i++) 133 statt_mask |= 1 << statts[i]; 134 135 pipe_mutex_lock(stwfb->fb->mutex); 136 137 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; 141 } 142 143 for (i = 0; i < count; i++) { 144 out[i] = NULL; 145 pipe_resource_reference(&out[i], stwfb->textures[statts[i]]); 146 } 147 148 stw_framebuffer_release(stwfb->fb); 149 150 return TRUE; 151} 152 153/** 154 * Present an attachment of the framebuffer. 155 */ 156static boolean 157stw_st_framebuffer_present_locked(struct st_framebuffer_iface *stfb, 158 enum st_attachment_type statt) 159{ 160 struct stw_st_framebuffer *stwfb = stw_st_framebuffer(stfb); 161 struct pipe_resource *resource; 162 163 resource = stwfb->textures[statt]; 164 if (resource) { 165 stw_framebuffer_present_locked(stwfb->fb->hDC, stwfb->fb, resource); 166 } 167 168 return TRUE; 169} 170 171static boolean 172stw_st_framebuffer_flush_front(struct st_framebuffer_iface *stfb, 173 enum st_attachment_type statt) 174{ 175 struct stw_st_framebuffer *stwfb = stw_st_framebuffer(stfb); 176 177 pipe_mutex_lock(stwfb->fb->mutex); 178 179 return stw_st_framebuffer_present_locked(&stwfb->base, statt); 180} 181 182/** 183 * Create a framebuffer interface. 184 */ 185struct st_framebuffer_iface * 186stw_st_create_framebuffer(struct stw_framebuffer *fb) 187{ 188 struct stw_st_framebuffer *stwfb; 189 190 stwfb = CALLOC_STRUCT(stw_st_framebuffer); 191 if (!stwfb) 192 return NULL; 193 194 stwfb->fb = fb; 195 stwfb->stvis = fb->pfi->stvis; 196 197 stwfb->base.visual = &stwfb->stvis; 198 stwfb->base.flush_front = stw_st_framebuffer_flush_front; 199 stwfb->base.validate = stw_st_framebuffer_validate; 200 201 return &stwfb->base; 202} 203 204/** 205 * Destroy a framebuffer interface. 206 */ 207void 208stw_st_destroy_framebuffer_locked(struct st_framebuffer_iface *stfb) 209{ 210 struct stw_st_framebuffer *stwfb = stw_st_framebuffer(stfb); 211 int i; 212 213 for (i = 0; i < ST_ATTACHMENT_COUNT; i++) 214 pipe_resource_reference(&stwfb->textures[i], NULL); 215 216 FREE(stwfb); 217} 218 219/** 220 * Swap the buffers of the given framebuffer. 221 */ 222boolean 223stw_st_swap_framebuffer_locked(struct st_framebuffer_iface *stfb) 224{ 225 struct stw_st_framebuffer *stwfb = stw_st_framebuffer(stfb); 226 unsigned front = ST_ATTACHMENT_FRONT_LEFT, back = ST_ATTACHMENT_BACK_LEFT; 227 struct pipe_resource *ptex; 228 unsigned mask; 229 230 /* swap the textures */ 231 ptex = stwfb->textures[front]; 232 stwfb->textures[front] = stwfb->textures[back]; 233 stwfb->textures[back] = ptex; 234 235 /* convert to mask */ 236 front = 1 << front; 237 back = 1 << back; 238 239 /* swap the bits in mask */ 240 mask = stwfb->texture_mask & ~(front | back); 241 if (stwfb->texture_mask & front) 242 mask |= back; 243 if (stwfb->texture_mask & back) 244 mask |= front; 245 stwfb->texture_mask = mask; 246 247 front = ST_ATTACHMENT_FRONT_LEFT; 248 return stw_st_framebuffer_present_locked(&stwfb->base, front); 249} 250 251/** 252 * Create an st_api of the state tracker. 253 */ 254struct st_api * 255stw_st_create_api(void) 256{ 257 return st_gl_api_create(); 258} 259