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"
34 #include "main/fbobject.h"
38 struct dd_function_table
;
41 struct gen_mipmap_state
;
43 struct st_fragment_program
;
47 #define ST_NEW_MESA (1 << 0) /* Mesa state has changed */
48 #define ST_NEW_FRAGMENT_PROGRAM (1 << 1)
49 #define ST_NEW_VERTEX_PROGRAM (1 << 2)
50 #define ST_NEW_FRAMEBUFFER (1 << 3)
51 #define ST_NEW_EDGEFLAGS_DATA (1 << 4)
52 #define ST_NEW_GEOMETRY_PROGRAM (1 << 5)
53 #define ST_NEW_VERTEX_ARRAYS (1 << 6)
56 struct st_state_flags
{
61 struct st_tracked_state
{
63 struct st_state_flags dirty
;
64 void (*update
)( struct st_context
*st
);
71 struct st_context_iface iface
;
73 struct gl_context
*ctx
;
75 struct pipe_context
*pipe
;
77 struct u_upload_mgr
*uploader
, *indexbuf_uploader
, *constbuf_uploader
;
79 struct draw_context
*draw
; /**< For selection/feedback/rastpos only */
80 struct draw_stage
*feedback_stage
; /**< For GL_FEEDBACK rendermode */
81 struct draw_stage
*selection_stage
; /**< For GL_SELECT rendermode */
82 struct draw_stage
*rastpos_stage
; /**< For glRasterPos */
83 GLboolean clamp_frag_color_in_shader
;
84 GLboolean clamp_vert_color_in_shader
;
85 boolean has_stencil_export
; /**< can do shader stencil export? */
86 boolean has_time_elapsed
;
87 boolean has_shader_model3
;
89 /* On old libGL's for linux we need to invalidate the drawables
90 * on glViewpport calls, this is set via a option.
92 boolean invalidate_on_gl_viewport
;
94 boolean vertex_array_out_of_memory
;
96 /* Some state is contained in constant objects.
97 * Other state is just parameter values.
100 struct pipe_blend_state blend
;
101 struct pipe_depth_stencil_alpha_state depth_stencil
;
102 struct pipe_rasterizer_state rasterizer
;
103 struct pipe_sampler_state samplers
[PIPE_SHADER_TYPES
][PIPE_MAX_SAMPLERS
];
104 GLuint num_samplers
[PIPE_SHADER_TYPES
];
105 struct pipe_sampler_view
*sampler_views
[PIPE_SHADER_TYPES
][PIPE_MAX_SAMPLERS
];
106 GLuint num_sampler_views
[PIPE_SHADER_TYPES
];
107 struct pipe_clip_state clip
;
111 } constants
[PIPE_SHADER_TYPES
];
112 struct pipe_framebuffer_state framebuffer
;
113 struct pipe_scissor_state scissor
;
114 struct pipe_viewport_state viewport
;
115 unsigned sample_mask
;
117 GLuint poly_stipple
[32]; /**< In OpenGL's bottom-to-top order */
119 GLuint fb_orientation
;
125 struct st_state_flags dirty
;
127 GLboolean missing_textures
;
128 GLboolean vertdata_edgeflags
;
130 /** Mapping from VERT_RESULT_x to post-transformed vertex slot */
131 const GLuint
*vertex_result_to_slot
;
133 struct st_vertex_program
*vp
; /**< Currently bound vertex program */
134 struct st_fragment_program
*fp
; /**< Currently bound fragment program */
135 struct st_geometry_program
*gp
; /**< Currently bound geometry program */
137 struct st_vp_variant
*vp_variant
;
138 struct st_fp_variant
*fp_variant
;
139 struct st_gp_variant
*gp_variant
;
141 struct gl_texture_object
*default_texture
;
144 struct gl_program_cache
*cache
;
145 struct st_fragment_program
*program
; /**< cur pixel transfer prog */
146 GLuint xfer_prog_sn
; /**< pixel xfer program serial no. */
147 GLuint user_prog_sn
; /**< user fragment program serial no. */
148 struct st_fragment_program
*combined_prog
;
149 GLuint combined_prog_sn
;
150 struct pipe_resource
*pixelmap_texture
;
151 struct pipe_sampler_view
*pixelmap_sampler_view
;
152 boolean pixelmap_enabled
; /**< use the pixelmap texture? */
157 struct pipe_rasterizer_state rasterizer
;
158 struct pipe_sampler_state samplers
[2];
159 enum pipe_format tex_format
;
161 struct bitmap_cache
*cache
;
164 /** for glDraw/CopyPixels */
166 struct gl_fragment_program
*shaders
[4];
167 void *vert_shaders
[2]; /**< ureg shaders */
172 struct pipe_rasterizer_state raster
;
173 struct pipe_viewport_state viewport
;
178 /** used for anything using util_draw_vertex_buffer */
179 struct pipe_vertex_element velems_util_draw
[3];
181 void *passthrough_fs
; /**< simple pass-through frag shader */
183 enum pipe_texture_target internal_target
;
184 struct gen_mipmap_state
*gen_mipmap
;
185 struct blit_state
*blit
;
187 struct cso_context
*cso_context
;
189 void *winsys_drawable_handle
;
191 /* The number of vertex buffers from the last call of validate_arrays. */
192 unsigned last_num_vbuffers
;
197 struct st_config_options options
;
201 /* Need this so that we can implement Mesa callbacks in this module.
203 static INLINE
struct st_context
*st_context(struct gl_context
*ctx
)
210 * Wrapper for struct gl_framebuffer.
211 * This is an opaque type to the outside world.
213 struct st_framebuffer
215 struct gl_framebuffer Base
;
218 struct st_framebuffer_iface
*iface
;
219 enum st_attachment_type statts
[ST_ATTACHMENT_COUNT
];
226 extern void st_init_driver_functions(struct dd_function_table
*functions
);
228 void st_invalidate_state(struct gl_context
* ctx
, GLuint new_state
);
236 st_fb_orientation(const struct gl_framebuffer
*fb
)
238 if (fb
&& _mesa_is_winsys_fbo(fb
)) {
239 /* Drawing into a window (on-screen buffer).
241 * Negate Y scale to flip image vertically.
242 * The NDC Y coords prior to viewport transformation are in the range
243 * [y=-1=bottom, y=1=top]
244 * Hardware window coords are in the range [y=0=top, y=H-1=bottom] where
245 * H is the window height.
246 * Use the viewport transformation to invert Y.
251 /* Drawing into user-created FBO (very likely a texture).
253 * For textures, T=0=Bottom, so by extension Y=0=Bottom for rendering.
260 /** clear-alloc a struct-sized object, with casting */
261 #define ST_CALLOC_STRUCT(T) (struct T *) calloc(1, sizeof(struct T))
264 extern struct st_context
*
265 st_create_context(gl_api api
, struct pipe_context
*pipe
,
266 const struct gl_config
*visual
,
267 struct st_context
*share
,
268 const struct st_config_options
*options
);
271 st_destroy_context(struct st_context
*st
);