1 /************************************************************************** 2 * 3 * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas. 4 * All Rights Reserved. 5 * 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: 13 * 14 * The above copyright notice and this permission notice (including the 15 * next paragraph) shall be included in all copies or substantial portions 16 * of the Software. 17 * 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. 25 * 26 **************************************************************************/ 27 28 /* 29 * Authors: 30 * Keith Whitwell <keith (at) tungstengraphics.com> 31 * Brian Paul 32 */ 33 34 #include "st_context.h" 35 #include "st_atom.h" 36 #include "st_cb_bitmap.h" 37 #include "st_cb_fbo.h" 38 #include "st_texture.h" 39 #include "pipe/p_context.h" 40 #include "cso_cache/cso_context.h" 41 #include "util/u_math.h" 42 #include "util/u_inlines.h" 43 #include "util/u_format.h" 44 45 46 /** 47 * When doing GL render to texture, we have to be sure that finalize_texture() 48 * didn't yank out the pipe_resource that we earlier created a surface for. 49 * Check for that here and create a new surface if needed. 50 */ 51 static void 52 update_renderbuffer_surface(struct st_context *st, 53 struct st_renderbuffer *strb) 54 { 55 struct pipe_context *pipe = st->pipe; 56 struct pipe_resource *resource = strb->rtt ? strb->rtt->pt : strb->texture; 57 int rtt_width = strb->Base.Width; 58 int rtt_height = strb->Base.Height; 59 enum pipe_format format = st->ctx->Color.sRGBEnabled ? resource->format : util_format_linear(resource->format); 60 61 if (!strb->surface || 62 strb->surface->format != format || 63 strb->surface->texture != resource || 64 strb->surface->width != rtt_width || 65 strb->surface->height != rtt_height) { 66 GLuint level; 67 /* find matching mipmap level size */ 68 for (level = 0; level <= resource->last_level; level++) { 69 if (u_minify(resource->width0, level) == rtt_width && 70 u_minify(resource->height0, level) == rtt_height) { 71 struct pipe_surface surf_tmpl; 72 memset(&surf_tmpl, 0, sizeof(surf_tmpl)); 73 surf_tmpl.format = format; 74 surf_tmpl.usage = PIPE_BIND_RENDER_TARGET; 75 surf_tmpl.u.tex.level = level; 76 surf_tmpl.u.tex.first_layer = strb->rtt_face + strb->rtt_slice; 77 surf_tmpl.u.tex.last_layer = strb->rtt_face + strb->rtt_slice; 78 79 pipe_surface_reference(&strb->surface, NULL); 80 81 strb->surface = pipe->create_surface(pipe, 82 resource, 83 &surf_tmpl); 84 #if 0 85 printf("-- alloc new surface %d x %d into tex %p\n", 86 strb->surface->width, strb->surface->height, 87 texture); 88 #endif 89 break; 90 } 91 } 92 } 93 } 94 95 96 /** 97 * Update framebuffer state (color, depth, stencil, etc. buffers) 98 */ 99 static void 100 update_framebuffer_state( struct st_context *st ) 101 { 102 struct pipe_framebuffer_state *framebuffer = &st->state.framebuffer; 103 struct gl_framebuffer *fb = st->ctx->DrawBuffer; 104 struct st_renderbuffer *strb; 105 GLuint i; 106 107 st_flush_bitmap_cache(st); 108 109 st->state.fb_orientation = st_fb_orientation(fb); 110 framebuffer->width = fb->Width; 111 framebuffer->height = fb->Height; 112 113 /*printf("------ fb size %d x %d\n", fb->Width, fb->Height);*/ 114 115 /* Examine Mesa's ctx->DrawBuffer->_ColorDrawBuffers state 116 * to determine which surfaces to draw to 117 */ 118 framebuffer->nr_cbufs = 0; 119 for (i = 0; i < fb->_NumColorDrawBuffers; i++) { 120 strb = st_renderbuffer(fb->_ColorDrawBuffers[i]); 121 122 if (strb) { 123 /*printf("--------- framebuffer surface rtt %p\n", strb->rtt);*/ 124 if (strb->rtt || 125 (strb->texture && util_format_is_srgb(strb->texture->format))) { 126 /* rendering to a GL texture, may have to update surface */ 127 update_renderbuffer_surface(st, strb); 128 } 129 130 if (strb->surface) { 131 pipe_surface_reference(&framebuffer->cbufs[framebuffer->nr_cbufs], 132 strb->surface); 133 framebuffer->nr_cbufs++; 134 } 135 strb->defined = GL_TRUE; /* we'll be drawing something */ 136 } 137 } 138 for (i = framebuffer->nr_cbufs; i < PIPE_MAX_COLOR_BUFS; i++) { 139 pipe_surface_reference(&framebuffer->cbufs[i], NULL); 140 } 141 142 /* 143 * Depth/Stencil renderbuffer/surface. 144 */ 145 strb = st_renderbuffer(fb->Attachment[BUFFER_DEPTH].Renderbuffer); 146 if (strb) { 147 if (strb->rtt) { 148 /* rendering to a GL texture, may have to update surface */ 149 update_renderbuffer_surface(st, strb); 150 } 151 pipe_surface_reference(&framebuffer->zsbuf, strb->surface); 152 } 153 else { 154 strb = st_renderbuffer(fb->Attachment[BUFFER_STENCIL].Renderbuffer); 155 if (strb) { 156 assert(strb->surface); 157 pipe_surface_reference(&framebuffer->zsbuf, strb->surface); 158 } 159 else 160 pipe_surface_reference(&framebuffer->zsbuf, NULL); 161 } 162 163 #ifdef DEBUG 164 /* Make sure the resource binding flags were set properly */ 165 for (i = 0; i < framebuffer->nr_cbufs; i++) { 166 assert(framebuffer->cbufs[i]->texture->bind & PIPE_BIND_RENDER_TARGET); 167 } 168 if (framebuffer->zsbuf) { 169 assert(framebuffer->zsbuf->texture->bind & PIPE_BIND_DEPTH_STENCIL); 170 } 171 #endif 172 173 cso_set_framebuffer(st->cso_context, framebuffer); 174 } 175 176 177 const struct st_tracked_state st_update_framebuffer = { 178 "st_update_framebuffer", /* name */ 179 { /* dirty */ 180 _NEW_BUFFERS, /* mesa */ 181 ST_NEW_FRAMEBUFFER, /* st */ 182 }, 183 update_framebuffer_state /* update */ 184 }; 185 186