1 /**************************************************************************
3 * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
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:
14 * The above copyright notice and this permission notice (including the
15 * next paragraph) shall be included in all copies or substantial portions
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.
26 **************************************************************************/
28 #ifndef PIPE_CONTEXT_H
29 #define PIPE_CONTEXT_H
40 struct pipe_fence_handle
;
41 struct pipe_state_cache
;
46 * Gallium rendering context. Basically:
47 * - state setting functions
48 * - VBO drawing functions
52 struct pipe_winsys
*winsys
;
53 struct pipe_screen
*screen
;
55 void *priv
; /**< context private data (for DRI for example) */
56 void *draw
; /**< private, for draw module (temporary?) */
58 void (*destroy
)( struct pipe_context
* );
61 /* Possible interface for setting edgeflags. These aren't really
62 * vertex elements, so don't fit there.
64 void (*set_edgeflags
)( struct pipe_context
*,
65 const unsigned *bitfield
);
69 * VBO drawing (return false on fallbacks (temporary??))
72 boolean (*draw_arrays
)( struct pipe_context
*pipe
,
73 unsigned mode
, unsigned start
, unsigned count
);
75 boolean (*draw_elements
)( struct pipe_context
*pipe
,
76 struct pipe_buffer
*indexBuffer
,
78 unsigned mode
, unsigned start
, unsigned count
);
80 /* XXX: this is (probably) a temporary entrypoint, as the range
81 * information should be available from the vertex_buffer state.
82 * Using this to quickly evaluate a specialized path in the draw
85 boolean (*draw_range_elements
)( struct pipe_context
*pipe
,
86 struct pipe_buffer
*indexBuffer
,
100 struct pipe_query
*(*create_query
)( struct pipe_context
*pipe
,
101 unsigned query_type
);
103 void (*destroy_query
)(struct pipe_context
*pipe
,
104 struct pipe_query
*q
);
106 void (*begin_query
)(struct pipe_context
*pipe
, struct pipe_query
*q
);
107 void (*end_query
)(struct pipe_context
*pipe
, struct pipe_query
*q
);
109 boolean (*get_query_result
)(struct pipe_context
*pipe
,
110 struct pipe_query
*q
,
116 * State functions (create/bind/destroy state objects)
119 void * (*create_blend_state
)(struct pipe_context
*,
120 const struct pipe_blend_state
*);
121 void (*bind_blend_state
)(struct pipe_context
*, void *);
122 void (*delete_blend_state
)(struct pipe_context
*, void *);
124 void * (*create_sampler_state
)(struct pipe_context
*,
125 const struct pipe_sampler_state
*);
126 void (*bind_fragment_sampler_states
)(struct pipe_context
*,
127 unsigned num_samplers
,
129 void (*bind_vertex_sampler_states
)(struct pipe_context
*,
130 unsigned num_samplers
,
132 void (*delete_sampler_state
)(struct pipe_context
*, void *);
134 void * (*create_rasterizer_state
)(struct pipe_context
*,
135 const struct pipe_rasterizer_state
*);
136 void (*bind_rasterizer_state
)(struct pipe_context
*, void *);
137 void (*delete_rasterizer_state
)(struct pipe_context
*, void *);
139 void * (*create_depth_stencil_alpha_state
)(struct pipe_context
*,
140 const struct pipe_depth_stencil_alpha_state
*);
141 void (*bind_depth_stencil_alpha_state
)(struct pipe_context
*, void *);
142 void (*delete_depth_stencil_alpha_state
)(struct pipe_context
*, void *);
144 void * (*create_fs_state
)(struct pipe_context
*,
145 const struct pipe_shader_state
*);
146 void (*bind_fs_state
)(struct pipe_context
*, void *);
147 void (*delete_fs_state
)(struct pipe_context
*, void *);
149 void * (*create_vs_state
)(struct pipe_context
*,
150 const struct pipe_shader_state
*);
151 void (*bind_vs_state
)(struct pipe_context
*, void *);
152 void (*delete_vs_state
)(struct pipe_context
*, void *);
156 * Parameter-like state (or properties)
159 void (*set_blend_color
)( struct pipe_context
*,
160 const struct pipe_blend_color
* );
162 void (*set_clip_state
)( struct pipe_context
*,
163 const struct pipe_clip_state
* );
165 void (*set_constant_buffer
)( struct pipe_context
*,
166 uint shader
, uint index
,
167 const struct pipe_constant_buffer
*buf
);
169 void (*set_framebuffer_state
)( struct pipe_context
*,
170 const struct pipe_framebuffer_state
* );
172 void (*set_polygon_stipple
)( struct pipe_context
*,
173 const struct pipe_poly_stipple
* );
175 void (*set_scissor_state
)( struct pipe_context
*,
176 const struct pipe_scissor_state
* );
178 void (*set_viewport_state
)( struct pipe_context
*,
179 const struct pipe_viewport_state
* );
181 void (*set_fragment_sampler_textures
)(struct pipe_context
*,
182 unsigned num_textures
,
183 struct pipe_texture
**);
185 void (*set_vertex_sampler_textures
)(struct pipe_context
*,
186 unsigned num_textures
,
187 struct pipe_texture
**);
189 void (*set_vertex_buffers
)( struct pipe_context
*,
190 unsigned num_buffers
,
191 const struct pipe_vertex_buffer
* );
193 void (*set_vertex_elements
)( struct pipe_context
*,
194 unsigned num_elements
,
195 const struct pipe_vertex_element
* );
202 * The pipe driver is allowed to set these functions to NULL, and in that
203 * case, they will not be available.
208 * Copy a block of pixels from one surface to another.
209 * The surfaces must be of the same format.
211 void (*surface_copy
)(struct pipe_context
*pipe
,
212 struct pipe_surface
*dest
,
213 unsigned destx
, unsigned desty
,
214 struct pipe_surface
*src
,
215 unsigned srcx
, unsigned srcy
,
216 unsigned width
, unsigned height
);
219 * Fill a region of a surface with a constant value.
221 void (*surface_fill
)(struct pipe_context
*pipe
,
222 struct pipe_surface
*dst
,
223 unsigned dstx
, unsigned dsty
,
224 unsigned width
, unsigned height
,
229 * Clear the specified set of currently bound buffers to specified values.
230 * The entire buffers are cleared (no scissor, no colormask, etc).
232 * \param buffers bitfield of PIPE_CLEAR_* values.
233 * \param rgba pointer to an array of one float for each of r, g, b, a.
234 * \param depth depth clear value in [0,1].
235 * \param stencil stencil clear value
237 void (*clear
)(struct pipe_context
*pipe
,
244 * \param flags bitmask of PIPE_FLUSH_x tokens)
246 void (*flush
)( struct pipe_context
*pipe
,
248 struct pipe_fence_handle
**fence
);
251 * Check whether a texture is referenced by an unflushed hw command.
252 * The state-tracker uses this function to optimize away unnecessary
253 * flushes. It is safe (but wasteful) to always return.
254 * PIPE_REFERENCED_FOR_READ | PIPE_REFERENCED_FOR_WRITE.
255 * \param pipe The pipe context whose unflushed hw commands will be
257 * \param level mipmap level.
258 * \param texture texture to check.
259 * \param face cubemap face. Use 0 for non-cubemap texture.
261 unsigned int (*is_texture_referenced
) (struct pipe_context
*pipe
,
262 struct pipe_texture
*texture
,
263 unsigned face
, unsigned level
);
266 * Check whether a buffer is referenced by an unflushed hw command.
267 * The state-tracker uses this function to optimize away unnecessary
268 * flushes. It is safe (but wasteful) to always return
269 * PIPE_REFERENCED_FOR_READ | PIPE_REFERENCED_FOR_WRITE.
270 * \param pipe The pipe context whose unflushed hw commands will be
272 * \param buf Buffer to check.
274 unsigned int (*is_buffer_referenced
) (struct pipe_context
*pipe
,
275 struct pipe_buffer
*buf
);
283 #endif /* PIPE_CONTEXT_H */