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? */
87 /* On old libGL's for linux we need to invalidate the drawables
88 * on glViewpport calls, this is set via a option.
90 boolean invalidate_on_gl_viewport
;
92 boolean vertex_array_out_of_memory
;
94 /* Some state is contained in constant objects.
95 * Other state is just parameter values.
98 struct pipe_blend_state blend
;
99 struct pipe_depth_stencil_alpha_state depth_stencil
;
100 struct pipe_rasterizer_state rasterizer
;
101 struct pipe_sampler_state fragment_samplers
[PIPE_MAX_SAMPLERS
];
102 struct pipe_sampler_state vertex_samplers
[PIPE_MAX_VERTEX_SAMPLERS
];
103 struct pipe_clip_state clip
;
107 } constants
[PIPE_SHADER_TYPES
];
108 struct pipe_framebuffer_state framebuffer
;
109 struct pipe_sampler_view
*fragment_sampler_views
[PIPE_MAX_SAMPLERS
];
110 struct pipe_sampler_view
*vertex_sampler_views
[PIPE_MAX_VERTEX_SAMPLERS
];
111 struct pipe_scissor_state scissor
;
112 struct pipe_viewport_state viewport
;
113 unsigned sample_mask
;
115 GLuint num_fragment_samplers
;
116 GLuint num_vertex_samplers
;
117 GLuint num_fragment_textures
;
118 GLuint num_vertex_textures
;
120 GLuint poly_stipple
[32]; /**< In OpenGL's bottom-to-top order */
122 GLuint fb_orientation
;
128 struct st_state_flags dirty
;
130 GLboolean missing_textures
;
131 GLboolean vertdata_edgeflags
;
133 /** Mapping from VERT_RESULT_x to post-transformed vertex slot */
134 const GLuint
*vertex_result_to_slot
;
136 struct st_vertex_program
*vp
; /**< Currently bound vertex program */
137 struct st_fragment_program
*fp
; /**< Currently bound fragment program */
138 struct st_geometry_program
*gp
; /**< Currently bound geometry program */
140 struct st_vp_variant
*vp_variant
;
141 struct st_fp_variant
*fp_variant
;
142 struct st_gp_variant
*gp_variant
;
144 struct gl_texture_object
*default_texture
;
147 struct gl_program_cache
*cache
;
148 struct st_fragment_program
*program
; /**< cur pixel transfer prog */
149 GLuint xfer_prog_sn
; /**< pixel xfer program serial no. */
150 GLuint user_prog_sn
; /**< user fragment program serial no. */
151 struct st_fragment_program
*combined_prog
;
152 GLuint combined_prog_sn
;
153 struct pipe_resource
*pixelmap_texture
;
154 struct pipe_sampler_view
*pixelmap_sampler_view
;
155 boolean pixelmap_enabled
; /**< use the pixelmap texture? */
160 struct pipe_rasterizer_state rasterizer
;
161 struct pipe_sampler_state samplers
[2];
162 enum pipe_format tex_format
;
164 struct bitmap_cache
*cache
;
167 /** for glDraw/CopyPixels */
169 struct gl_fragment_program
*shaders
[4];
170 void *vert_shaders
[2]; /**< ureg shaders */
175 struct pipe_rasterizer_state raster
;
176 struct pipe_viewport_state viewport
;
179 boolean enable_ds_separate
;
182 /** used for anything using util_draw_vertex_buffer */
183 struct pipe_vertex_element velems_util_draw
[3];
185 void *passthrough_fs
; /**< simple pass-through frag shader */
187 enum pipe_texture_target internal_target
;
188 struct gen_mipmap_state
*gen_mipmap
;
189 struct blit_state
*blit
;
191 struct cso_context
*cso_context
;
194 void *winsys_drawable_handle
;
196 /* Active render condition. */
197 struct pipe_query
*render_condition
;
198 unsigned condition_mode
;
205 /* Need this so that we can implement Mesa callbacks in this module.
207 static INLINE
struct st_context
*st_context(struct gl_context
*ctx
)
214 * Wrapper for struct gl_framebuffer.
215 * This is an opaque type to the outside world.
217 struct st_framebuffer
219 struct gl_framebuffer Base
;
222 struct st_framebuffer_iface
*iface
;
223 enum st_attachment_type statts
[ST_ATTACHMENT_COUNT
];
230 extern void st_init_driver_functions(struct dd_function_table
*functions
);
232 void st_invalidate_state(struct gl_context
* ctx
, GLuint new_state
);
240 st_fb_orientation(const struct gl_framebuffer
*fb
)
242 if (fb
&& _mesa_is_winsys_fbo(fb
)) {
243 /* Drawing into a window (on-screen buffer).
245 * Negate Y scale to flip image vertically.
246 * The NDC Y coords prior to viewport transformation are in the range
247 * [y=-1=bottom, y=1=top]
248 * Hardware window coords are in the range [y=0=top, y=H-1=bottom] where
249 * H is the window height.
250 * Use the viewport transformation to invert Y.
255 /* Drawing into user-created FBO (very likely a texture).
257 * For textures, T=0=Bottom, so by extension Y=0=Bottom for rendering.
264 /** clear-alloc a struct-sized object, with casting */
265 #define ST_CALLOC_STRUCT(T) (struct T *) calloc(1, sizeof(struct T))
271 extern struct st_context
*
272 st_create_context(gl_api api
, struct pipe_context
*pipe
,
273 const struct gl_config
*visual
,
274 struct st_context
*share
);
277 st_destroy_context(struct st_context
*st
);