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 #ifndef FRAMEBUFFER_H 27 #define FRAMEBUFFER_H 28 29 #include "mtypes.h" 30 31 struct gl_config; 32 struct gl_context; 33 struct gl_renderbuffer; 34 35 extern struct gl_framebuffer * 36 _mesa_create_framebuffer(const struct gl_config *visual); 37 38 extern struct gl_framebuffer * 39 _mesa_new_framebuffer(struct gl_context *ctx, GLuint name); 40 41 extern void 42 _mesa_initialize_window_framebuffer(struct gl_framebuffer *fb, 43 const struct gl_config *visual); 44 45 extern void 46 _mesa_initialize_user_framebuffer(struct gl_framebuffer *fb, GLuint name); 47 48 extern void 49 _mesa_destroy_framebuffer(struct gl_framebuffer *buffer); 50 51 extern void 52 _mesa_free_framebuffer_data(struct gl_framebuffer *buffer); 53 54 extern void 55 _mesa_reference_framebuffer_(struct gl_framebuffer **ptr, 56 struct gl_framebuffer *fb); 57 58 static inline void 59 _mesa_reference_framebuffer(struct gl_framebuffer **ptr, 60 struct gl_framebuffer *fb) 61 { 62 if (*ptr != fb) 63 _mesa_reference_framebuffer_(ptr, fb); 64 } 65 66 extern void 67 _mesa_resize_framebuffer(struct gl_context *ctx, struct gl_framebuffer *fb, 68 GLuint width, GLuint height); 69 70 71 extern void 72 _mesa_resizebuffers( struct gl_context *ctx ); 73 74 extern void 75 _mesa_scissor_bounding_box(const struct gl_context *ctx, 76 const struct gl_framebuffer *buffer, 77 unsigned idx, int *bbox); 78 extern void 79 _mesa_intersect_scissor_bounding_box(const struct gl_context *ctx, 80 unsigned idx, int *bbox); 81 82 static inline GLuint 83 _mesa_geometric_width(const struct gl_framebuffer *buffer) 84 { 85 return buffer->_HasAttachments ? 86 buffer->Width : buffer->DefaultGeometry.Width; 87 } 88 89 static inline GLuint 90 _mesa_geometric_height(const struct gl_framebuffer *buffer) 91 { 92 return buffer->_HasAttachments ? 93 buffer->Height : buffer->DefaultGeometry.Height; 94 } 95 96 static inline GLuint 97 _mesa_geometric_samples(const struct gl_framebuffer *buffer) 98 { 99 return buffer->_HasAttachments ? 100 buffer->Visual.samples : 101 buffer->DefaultGeometry._NumSamples; 102 } 103 104 static inline GLuint 105 _mesa_geometric_layers(const struct gl_framebuffer *buffer) 106 { 107 return buffer->_HasAttachments ? 108 buffer->MaxNumLayers : buffer->DefaultGeometry.Layers; 109 } 110 111 extern void 112 _mesa_update_draw_buffer_bounds(struct gl_context *ctx, 113 struct gl_framebuffer *drawFb); 114 115 extern void 116 _mesa_update_framebuffer_visual(struct gl_context *ctx, 117 struct gl_framebuffer *fb); 118 119 extern void 120 _mesa_update_framebuffer(struct gl_context *ctx, 121 struct gl_framebuffer *readFb, 122 struct gl_framebuffer *drawFb); 123 124 extern GLboolean 125 _mesa_source_buffer_exists(struct gl_context *ctx, GLenum format); 126 127 extern GLboolean 128 _mesa_dest_buffer_exists(struct gl_context *ctx, GLenum format); 129 130 extern GLenum 131 _mesa_get_color_read_type(struct gl_context *ctx); 132 133 extern GLenum 134 _mesa_get_color_read_format(struct gl_context *ctx); 135 136 extern struct gl_renderbuffer * 137 _mesa_get_read_renderbuffer_for_format(const struct gl_context *ctx, 138 GLenum format); 139 140 extern void 141 _mesa_print_framebuffer(const struct gl_framebuffer *fb); 142 143 extern bool 144 _mesa_is_front_buffer_reading(const struct gl_framebuffer *fb); 145 146 extern bool 147 _mesa_is_front_buffer_drawing(const struct gl_framebuffer *fb); 148 149 extern bool 150 _mesa_is_multisample_enabled(const struct gl_context *ctx); 151 152 extern bool 153 _mesa_is_alpha_test_enabled(const struct gl_context *ctx); 154 155 extern bool 156 _mesa_is_alpha_to_coverage_enabled(const struct gl_context *ctx); 157 158 #endif /* FRAMEBUFFER_H */ 159
