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 "util/u_atomic.h" 31#include "state_tracker/st_gl_api.h" /* for st_gl_api_create */ 32 33#include "stw_st.h" 34#include "stw_device.h" 35#include "stw_framebuffer.h" 36#include "stw_pixelformat.h" 37 38struct stw_st_framebuffer { 39 struct st_framebuffer_iface base; 40 41 struct stw_framebuffer *fb; 42 struct st_visual stvis; 43 44 struct pipe_resource *textures[ST_ATTACHMENT_COUNT]; 45 unsigned texture_width, texture_height; 46 unsigned texture_mask; 47}; 48 49static INLINE struct stw_st_framebuffer * 50stw_st_framebuffer(struct st_framebuffer_iface *stfb) 51{ 52 return (struct stw_st_framebuffer *) stfb; 53} 54 55/** 56 * Remove outdated textures and create the requested ones. 57 */ 58static void 59stw_st_framebuffer_validate_locked(struct st_framebuffer_iface *stfb, 60 unsigned width, unsigned height, 61 unsigned mask) 62{ 63 struct stw_st_framebuffer *stwfb = stw_st_framebuffer(stfb); 64 struct pipe_resource templ; 65 unsigned i; 66 67 /* remove outdated textures */ 68 if (stwfb->texture_width != width || stwfb->texture_height != height) { 69 for (i = 0; i < ST_ATTACHMENT_COUNT; i++) 70 pipe_resource_reference(&stwfb->textures[i], NULL); 71 } 72 73 memset(&templ, 0, sizeof(templ)); 74 templ.target = PIPE_TEXTURE_2D; 75 templ.width0 = width; 76 templ.height0 = height; 77 templ.depth0 = 1; 78 templ.array_size = 1; 79 templ.last_level = 0; 80 81 for (i = 0; i < ST_ATTACHMENT_COUNT; i++) { 82 enum pipe_format format; 83 unsigned bind; 84 85 /* the texture already exists or not requested */ 86 if (stwfb->textures[i] || !(mask & (1 << i))) { 87 /* remember the texture */ 88 if (stwfb->textures[i]) 89 mask |= (1 << i); 90 continue; 91 } 92 93 switch (i) { 94 case ST_ATTACHMENT_FRONT_LEFT: 95 case ST_ATTACHMENT_BACK_LEFT: 96 format = stwfb->stvis.color_format; 97 bind = PIPE_BIND_DISPLAY_TARGET | 98 PIPE_BIND_RENDER_TARGET; 99 break; 100 case ST_ATTACHMENT_DEPTH_STENCIL: 101 format = stwfb->stvis.depth_stencil_format; 102 bind = PIPE_BIND_DEPTH_STENCIL; 103 break; 104 default: 105 format = PIPE_FORMAT_NONE; 106 break; 107 } 108 109 if (format != PIPE_FORMAT_NONE) { 110 templ.format = format; 111 templ.bind = bind; 112 113 stwfb->textures[i] = 114 stw_dev->screen->resource_create(stw_dev->screen, &templ); 115 } 116 } 117 118 stwfb->texture_width = width; 119 stwfb->texture_height = height; 120 stwfb->texture_mask = mask; 121} 122 123static boolean 124stw_st_framebuffer_validate(struct st_framebuffer_iface *stfb, 125 const enum st_attachment_type *statts, 126 unsigned count, 127 struct pipe_resource **out) 128{ 129 struct stw_st_framebuffer *stwfb = stw_st_framebuffer(stfb); 130 unsigned statt_mask, i; 131 132 statt_mask = 0x0; 133 for (i = 0; i < count; i++) 134 statt_mask |= 1 << statts[i]; 135 136 pipe_mutex_lock(stwfb->fb->mutex); 137 138 if (stwfb->fb->must_resize || (statt_mask & ~stwfb->texture_mask)) { 139 stw_st_framebuffer_validate_locked(&stwfb->base, 140 stwfb->fb->width, stwfb->fb->height, statt_mask); 141 stwfb->fb->must_resize = FALSE; 142 } 143 144 for (i = 0; i < count; i++) { 145 out[i] = NULL; 146 pipe_resource_reference(&out[i], stwfb->textures[statts[i]]); 147 } 148 149 stw_framebuffer_release(stwfb->fb); 150 151 return TRUE; 152} 153 154/** 155 * Present an attachment of the framebuffer. 156 */ 157static boolean 158stw_st_framebuffer_present_locked(HDC hdc, 159 struct st_framebuffer_iface *stfb, 160 enum st_attachment_type statt) 161{ 162 struct stw_st_framebuffer *stwfb = stw_st_framebuffer(stfb); 163 struct pipe_resource *resource; 164 165 resource = stwfb->textures[statt]; 166 if (resource) { 167 stw_framebuffer_present_locked(hdc, stwfb->fb, resource); 168 } 169 170 return TRUE; 171} 172 173static boolean 174stw_st_framebuffer_flush_front(struct st_framebuffer_iface *stfb, 175 enum st_attachment_type statt) 176{ 177 struct stw_st_framebuffer *stwfb = stw_st_framebuffer(stfb); 178 179 pipe_mutex_lock(stwfb->fb->mutex); 180 181 return stw_st_framebuffer_present_locked(stwfb->fb->hDC, &stwfb->base, statt); 182} 183 184/** 185 * Create a framebuffer interface. 186 */ 187struct st_framebuffer_iface * 188stw_st_create_framebuffer(struct stw_framebuffer *fb) 189{ 190 struct stw_st_framebuffer *stwfb; 191 192 stwfb = CALLOC_STRUCT(stw_st_framebuffer); 193 if (!stwfb) 194 return NULL; 195 196 stwfb->fb = fb; 197 stwfb->stvis = fb->pfi->stvis; 198 199 stwfb->base.visual = &stwfb->stvis; 200 p_atomic_set(&stwfb->base.stamp, 1); 201 stwfb->base.flush_front = stw_st_framebuffer_flush_front; 202 stwfb->base.validate = stw_st_framebuffer_validate; 203 204 return &stwfb->base; 205} 206 207/** 208 * Destroy a framebuffer interface. 209 */ 210void 211stw_st_destroy_framebuffer_locked(struct st_framebuffer_iface *stfb) 212{ 213 struct stw_st_framebuffer *stwfb = stw_st_framebuffer(stfb); 214 int i; 215 216 for (i = 0; i < ST_ATTACHMENT_COUNT; i++) 217 pipe_resource_reference(&stwfb->textures[i], NULL); 218 219 FREE(stwfb); 220} 221 222/** 223 * Swap the buffers of the given framebuffer. 224 */ 225boolean 226stw_st_swap_framebuffer_locked(HDC hdc, struct st_framebuffer_iface *stfb) 227{ 228 struct stw_st_framebuffer *stwfb = stw_st_framebuffer(stfb); 229 unsigned front = ST_ATTACHMENT_FRONT_LEFT, back = ST_ATTACHMENT_BACK_LEFT; 230 struct pipe_resource *ptex; 231 unsigned mask; 232 233 /* swap the textures */ 234 ptex = stwfb->textures[front]; 235 stwfb->textures[front] = stwfb->textures[back]; 236 stwfb->textures[back] = ptex; 237 238 /* convert to mask */ 239 front = 1 << front; 240 back = 1 << back; 241 242 /* swap the bits in mask */ 243 mask = stwfb->texture_mask & ~(front | back); 244 if (stwfb->texture_mask & front) 245 mask |= back; 246 if (stwfb->texture_mask & back) 247 mask |= front; 248 stwfb->texture_mask = mask; 249 250 front = ST_ATTACHMENT_FRONT_LEFT; 251 return stw_st_framebuffer_present_locked(hdc, &stwfb->base, front); 252} 253 254/** 255 * Create an st_api of the state tracker. 256 */ 257struct st_api * 258stw_st_create_api(void) 259{ 260 return st_gl_api_create(); 261} 262