Details | Last modification | View Log | RSS feed
| Rev | Author | Line No. | Line |
|---|---|---|---|
| 5563 | serge | 1 | /* |
| 2 | * Mesa 3-D graphics library |
||
| 3 | * |
||
| 4 | * Copyright (C) 1999-2006 Brian Paul 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 "Software"), |
||
| 8 | * to deal in the Software without restriction, including without limitation |
||
| 9 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
||
| 10 | * and/or sell copies of the Software, and to permit persons to whom the |
||
| 11 | * Software is furnished to do so, subject to the following conditions: |
||
| 12 | * |
||
| 13 | * The above copyright notice and this permission notice shall be included |
||
| 14 | * in all copies or substantial portions of the Software. |
||
| 15 | * |
||
| 16 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS |
||
| 17 | * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
||
| 18 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
||
| 19 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR |
||
| 20 | * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, |
||
| 21 | * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR |
||
| 22 | * OTHER DEALINGS IN THE SOFTWARE. |
||
| 23 | */ |
||
| 24 | |||
| 25 | |||
| 26 | #include "glheader.h" |
||
| 27 | #include "imports.h" |
||
| 28 | #include "context.h" |
||
| 29 | #include "fbobject.h" |
||
| 30 | #include "formats.h" |
||
| 31 | #include "mtypes.h" |
||
| 32 | #include "renderbuffer.h" |
||
| 33 | |||
| 34 | |||
| 35 | /** |
||
| 36 | * Initialize the fields of a gl_renderbuffer to default values. |
||
| 37 | */ |
||
| 38 | void |
||
| 39 | _mesa_init_renderbuffer(struct gl_renderbuffer *rb, GLuint name) |
||
| 40 | { |
||
| 41 | _glthread_INIT_MUTEX(rb->Mutex); |
||
| 42 | |||
| 43 | rb->ClassID = 0; |
||
| 44 | rb->Name = name; |
||
| 45 | rb->RefCount = 0; |
||
| 46 | rb->Delete = _mesa_delete_renderbuffer; |
||
| 47 | |||
| 48 | /* The rest of these should be set later by the caller of this function or |
||
| 49 | * the AllocStorage method: |
||
| 50 | */ |
||
| 51 | rb->AllocStorage = NULL; |
||
| 52 | |||
| 53 | rb->Width = 0; |
||
| 54 | rb->Height = 0; |
||
| 55 | rb->Depth = 0; |
||
| 56 | rb->InternalFormat = GL_RGBA; |
||
| 57 | rb->Format = MESA_FORMAT_NONE; |
||
| 58 | } |
||
| 59 | |||
| 60 | |||
| 61 | /** |
||
| 62 | * Allocate a new gl_renderbuffer object. This can be used for user-created |
||
| 63 | * renderbuffers or window-system renderbuffers. |
||
| 64 | */ |
||
| 65 | struct gl_renderbuffer * |
||
| 66 | _mesa_new_renderbuffer(struct gl_context *ctx, GLuint name) |
||
| 67 | { |
||
| 68 | struct gl_renderbuffer *rb = CALLOC_STRUCT(gl_renderbuffer); |
||
| 69 | if (rb) { |
||
| 70 | _mesa_init_renderbuffer(rb, name); |
||
| 71 | } |
||
| 72 | return rb; |
||
| 73 | } |
||
| 74 | |||
| 75 | |||
| 76 | /** |
||
| 77 | * Delete a gl_framebuffer. |
||
| 78 | * This is the default function for renderbuffer->Delete(). |
||
| 79 | * Drivers which subclass gl_renderbuffer should probably implement their |
||
| 80 | * own delete function. But the driver might also call this function to |
||
| 81 | * free the object in the end. |
||
| 82 | */ |
||
| 83 | void |
||
| 84 | _mesa_delete_renderbuffer(struct gl_context *ctx, struct gl_renderbuffer *rb) |
||
| 85 | { |
||
| 86 | _glthread_DESTROY_MUTEX(rb->Mutex); |
||
| 87 | free(rb); |
||
| 88 | } |
||
| 89 | |||
| 90 | |||
| 91 | /** |
||
| 92 | * Attach a renderbuffer to a framebuffer. |
||
| 93 | * \param bufferName one of the BUFFER_x tokens |
||
| 94 | */ |
||
| 95 | void |
||
| 96 | _mesa_add_renderbuffer(struct gl_framebuffer *fb, |
||
| 97 | gl_buffer_index bufferName, struct gl_renderbuffer *rb) |
||
| 98 | { |
||
| 99 | assert(fb); |
||
| 100 | assert(rb); |
||
| 101 | assert(bufferName < BUFFER_COUNT); |
||
| 102 | |||
| 103 | /* There should be no previous renderbuffer on this attachment point, |
||
| 104 | * with the exception of depth/stencil since the same renderbuffer may |
||
| 105 | * be used for both. |
||
| 106 | */ |
||
| 107 | assert(bufferName == BUFFER_DEPTH || |
||
| 108 | bufferName == BUFFER_STENCIL || |
||
| 109 | fb->Attachment[bufferName].Renderbuffer == NULL); |
||
| 110 | |||
| 111 | /* winsys vs. user-created buffer cross check */ |
||
| 112 | if (_mesa_is_user_fbo(fb)) { |
||
| 113 | assert(rb->Name); |
||
| 114 | } |
||
| 115 | else { |
||
| 116 | assert(!rb->Name); |
||
| 117 | } |
||
| 118 | |||
| 119 | fb->Attachment[bufferName].Type = GL_RENDERBUFFER_EXT; |
||
| 120 | fb->Attachment[bufferName].Complete = GL_TRUE; |
||
| 121 | _mesa_reference_renderbuffer(&fb->Attachment[bufferName].Renderbuffer, rb); |
||
| 122 | } |
||
| 123 | |||
| 124 | |||
| 125 | /** |
||
| 126 | * Remove the named renderbuffer from the given framebuffer. |
||
| 127 | * \param bufferName one of the BUFFER_x tokens |
||
| 128 | */ |
||
| 129 | void |
||
| 130 | _mesa_remove_renderbuffer(struct gl_framebuffer *fb, |
||
| 131 | gl_buffer_index bufferName) |
||
| 132 | { |
||
| 133 | assert(bufferName < BUFFER_COUNT); |
||
| 134 | _mesa_reference_renderbuffer(&fb->Attachment[bufferName].Renderbuffer, |
||
| 135 | NULL); |
||
| 136 | } |
||
| 137 | |||
| 138 | |||
| 139 | /** |
||
| 140 | * Set *ptr to point to rb. If *ptr points to another renderbuffer, |
||
| 141 | * dereference that buffer first. The new renderbuffer's refcount will |
||
| 142 | * be incremented. The old renderbuffer's refcount will be decremented. |
||
| 143 | * This is normally only called from the _mesa_reference_renderbuffer() macro |
||
| 144 | * when there's a real pointer change. |
||
| 145 | */ |
||
| 146 | void |
||
| 147 | _mesa_reference_renderbuffer_(struct gl_renderbuffer **ptr, |
||
| 148 | struct gl_renderbuffer *rb) |
||
| 149 | { |
||
| 150 | if (*ptr) { |
||
| 151 | /* Unreference the old renderbuffer */ |
||
| 152 | GLboolean deleteFlag = GL_FALSE; |
||
| 153 | struct gl_renderbuffer *oldRb = *ptr; |
||
| 154 | |||
| 155 | _glthread_LOCK_MUTEX(oldRb->Mutex); |
||
| 156 | ASSERT(oldRb->RefCount > 0); |
||
| 157 | oldRb->RefCount--; |
||
| 158 | /*printf("RB DECR %p (%d) to %d\n", (void*) oldRb, oldRb->Name, oldRb->RefCount);*/ |
||
| 159 | deleteFlag = (oldRb->RefCount == 0); |
||
| 160 | _glthread_UNLOCK_MUTEX(oldRb->Mutex); |
||
| 161 | |||
| 162 | if (deleteFlag) { |
||
| 163 | GET_CURRENT_CONTEXT(ctx); |
||
| 164 | oldRb->Delete(ctx, oldRb); |
||
| 165 | } |
||
| 166 | |||
| 167 | *ptr = NULL; |
||
| 168 | } |
||
| 169 | assert(!*ptr); |
||
| 170 | |||
| 171 | if (rb) { |
||
| 172 | /* reference new renderbuffer */ |
||
| 173 | _glthread_LOCK_MUTEX(rb->Mutex); |
||
| 174 | rb->RefCount++; |
||
| 175 | /*printf("RB INCR %p (%d) to %d\n", (void*) rb, rb->Name, rb->RefCount);*/ |
||
| 176 | _glthread_UNLOCK_MUTEX(rb->Mutex); |
||
| 177 | *ptr = rb; |
||
| 178 | } |
||
| 179 | } |