1 /**************************************************************************
3 * Copyright 2003 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 **************************************************************************/
31 #include "main/mtypes.h"
32 #include "pipe/p_state.h"
33 #include "state_tracker/st_api.h"
37 struct dd_function_table
;
40 struct gen_mipmap_state
;
42 struct st_fragment_program
;
46 #define ST_NEW_MESA 0x1 /* Mesa state has changed */
47 #define ST_NEW_FRAGMENT_PROGRAM 0x2
48 #define ST_NEW_VERTEX_PROGRAM 0x4
49 #define ST_NEW_FRAMEBUFFER 0x8
50 #define ST_NEW_EDGEFLAGS_DATA 0x10
51 #define ST_NEW_GEOMETRY_PROGRAM 0x20
54 struct st_state_flags
{
59 struct st_tracked_state
{
61 struct st_state_flags dirty
;
62 void (*update
)( struct st_context
*st
);
69 struct st_context_iface iface
;
71 struct gl_context
*ctx
;
73 struct pipe_context
*pipe
;
75 struct u_upload_mgr
*uploader
;
76 struct draw_context
*draw
; /**< For selection/feedback/rastpos only */
77 struct draw_stage
*feedback_stage
; /**< For GL_FEEDBACK rendermode */
78 struct draw_stage
*selection_stage
; /**< For GL_SELECT rendermode */
79 struct draw_stage
*rastpos_stage
; /**< For glRasterPos */
80 GLboolean sw_primitive_restart
;
81 GLboolean clamp_frag_color_in_shader
;
82 GLboolean clamp_vert_color_in_shader
;
85 /* On old libGL's for linux we need to invalidate the drawables
86 * on glViewpport calls, this is set via a option.
88 boolean invalidate_on_gl_viewport
;
90 /* Some state is contained in constant objects.
91 * Other state is just parameter values.
94 struct pipe_blend_state blend
;
95 struct pipe_depth_stencil_alpha_state depth_stencil
;
96 struct pipe_rasterizer_state rasterizer
;
97 struct pipe_sampler_state samplers
[PIPE_MAX_SAMPLERS
];
98 struct pipe_sampler_state vertex_samplers
[PIPE_MAX_VERTEX_SAMPLERS
];
99 struct pipe_clip_state clip
;
103 } constants
[PIPE_SHADER_TYPES
];
104 struct pipe_framebuffer_state framebuffer
;
105 struct pipe_sampler_view
*sampler_views
[PIPE_MAX_SAMPLERS
];
106 struct pipe_sampler_view
*sampler_vertex_views
[PIPE_MAX_VERTEX_SAMPLERS
];
107 struct pipe_scissor_state scissor
;
108 struct pipe_viewport_state viewport
;
109 unsigned sample_mask
;
112 GLuint num_vertex_samplers
;
114 GLuint num_vertex_textures
;
116 GLuint poly_stipple
[32]; /**< In OpenGL's bottom-to-top order */
122 struct st_state_flags dirty
;
124 GLboolean missing_textures
;
125 GLboolean vertdata_edgeflags
;
127 /** Mapping from VERT_RESULT_x to post-transformed vertex slot */
128 const GLuint
*vertex_result_to_slot
;
130 struct st_vertex_program
*vp
; /**< Currently bound vertex program */
131 struct st_fragment_program
*fp
; /**< Currently bound fragment program */
132 struct st_geometry_program
*gp
; /**< Currently bound geometry program */
134 struct st_vp_variant
*vp_variant
;
135 struct st_fp_variant
*fp_variant
;
136 struct st_gp_variant
*gp_variant
;
138 struct gl_texture_object
*default_texture
;
141 struct gl_program_cache
*cache
;
142 struct st_fragment_program
*program
; /**< cur pixel transfer prog */
143 GLuint xfer_prog_sn
; /**< pixel xfer program serial no. */
144 GLuint user_prog_sn
; /**< user fragment program serial no. */
145 struct st_fragment_program
*combined_prog
;
146 GLuint combined_prog_sn
;
147 struct pipe_resource
*pixelmap_texture
;
148 struct pipe_sampler_view
*pixelmap_sampler_view
;
149 boolean pixelmap_enabled
; /**< use the pixelmap texture? */
154 struct pipe_rasterizer_state rasterizer
;
155 struct pipe_sampler_state samplers
[2];
156 enum pipe_format tex_format
;
158 struct bitmap_cache
*cache
;
161 /** for glDraw/CopyPixels */
163 struct gl_fragment_program
*shaders
[4];
164 void *vert_shaders
[2]; /**< ureg shaders */
169 struct pipe_rasterizer_state raster
;
170 struct pipe_viewport_state viewport
;
173 float vertices
[4][2][4]; /**< vertex pos + color */
174 boolean enable_ds_separate
;
177 /** used for anything using util_draw_vertex_buffer */
178 struct pipe_vertex_element velems_util_draw
[3];
180 void *passthrough_fs
; /**< simple pass-through frag shader */
182 enum pipe_texture_target internal_target
;
183 struct gen_mipmap_state
*gen_mipmap
;
184 struct blit_state
*blit
;
186 struct cso_context
*cso_context
;
189 void *winsys_drawable_handle
;
191 /* User vertex buffers. */
193 struct pipe_resource
*buffer
;
198 /** Attribute stride */
200 } user_attrib
[PIPE_MAX_ATTRIBS
];
201 unsigned num_user_attribs
;
203 /* Active render condition. */
204 struct pipe_query
*render_condition
;
205 unsigned condition_mode
;
212 /* Need this so that we can implement Mesa callbacks in this module.
214 static INLINE
struct st_context
*st_context(struct gl_context
*ctx
)
221 * Wrapper for struct gl_framebuffer.
222 * This is an opaque type to the outside world.
224 struct st_framebuffer
226 struct gl_framebuffer Base
;
229 struct st_framebuffer_iface
*iface
;
230 enum st_attachment_type statts
[ST_ATTACHMENT_COUNT
];
237 extern void st_init_driver_functions(struct dd_function_table
*functions
);
239 void st_invalidate_state(struct gl_context
* ctx
, GLuint new_state
);
247 st_fb_orientation(const struct gl_framebuffer
*fb
)
249 if (fb
&& fb
->Name
== 0) {
250 /* Drawing into a window (on-screen buffer).
252 * Negate Y scale to flip image vertically.
253 * The NDC Y coords prior to viewport transformation are in the range
254 * [y=-1=bottom, y=1=top]
255 * Hardware window coords are in the range [y=0=top, y=H-1=bottom] where
256 * H is the window height.
257 * Use the viewport transformation to invert Y.
262 /* Drawing into user-created FBO (very likely a texture).
264 * For textures, T=0=Bottom, so by extension Y=0=Bottom for rendering.
271 /** clear-alloc a struct-sized object, with casting */
272 #define ST_CALLOC_STRUCT(T) (struct T *) calloc(1, sizeof(struct T))
278 extern struct st_context
*
279 st_create_context(gl_api api
, struct pipe_context
*pipe
,
280 const struct gl_config
*visual
,
281 struct st_context
*share
);
284 st_destroy_context(struct st_context
*st
);