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
;
45 #define ST_NEW_MESA 0x1 /* Mesa state has changed */
46 #define ST_NEW_FRAGMENT_PROGRAM 0x2
47 #define ST_NEW_VERTEX_PROGRAM 0x4
48 #define ST_NEW_FRAMEBUFFER 0x8
49 #define ST_NEW_EDGEFLAGS_DATA 0x10
50 #define ST_NEW_GEOMETRY_PROGRAM 0x20
53 struct st_state_flags
{
58 struct st_tracked_state
{
60 struct st_state_flags dirty
;
61 void (*update
)( struct st_context
*st
);
68 struct st_context_iface iface
;
70 struct gl_context
*ctx
;
72 struct pipe_context
*pipe
;
74 struct draw_context
*draw
; /**< For selection/feedback/rastpos only */
75 struct draw_stage
*feedback_stage
; /**< For GL_FEEDBACK rendermode */
76 struct draw_stage
*selection_stage
; /**< For GL_SELECT rendermode */
77 struct draw_stage
*rastpos_stage
; /**< For glRasterPos */
80 /* On old libGL's for linux we need to invalidate the drawables
81 * on glViewpport calls, this is set via a option.
83 boolean invalidate_on_gl_viewport
;
85 /* Some state is contained in constant objects.
86 * Other state is just parameter values.
89 struct pipe_blend_state blend
;
90 struct pipe_depth_stencil_alpha_state depth_stencil
;
91 struct pipe_rasterizer_state rasterizer
;
92 struct pipe_sampler_state samplers
[PIPE_MAX_SAMPLERS
];
93 struct pipe_sampler_state vertex_samplers
[PIPE_MAX_VERTEX_SAMPLERS
];
94 struct pipe_clip_state clip
;
98 } constants
[PIPE_SHADER_TYPES
];
99 struct pipe_framebuffer_state framebuffer
;
100 struct pipe_sampler_view
*sampler_views
[PIPE_MAX_SAMPLERS
];
101 struct pipe_sampler_view
*sampler_vertex_views
[PIPE_MAX_VERTEX_SAMPLERS
];
102 struct pipe_scissor_state scissor
;
103 struct pipe_viewport_state viewport
;
104 unsigned sample_mask
;
107 GLuint num_vertex_samplers
;
109 GLuint num_vertex_textures
;
111 GLuint poly_stipple
[32]; /**< In OpenGL's bottom-to-top order */
117 struct st_state_flags dirty
;
119 GLboolean missing_textures
;
120 GLboolean vertdata_edgeflags
;
122 /** Mapping from VERT_RESULT_x to post-transformed vertex slot */
123 const GLuint
*vertex_result_to_slot
;
125 struct st_vertex_program
*vp
; /**< Currently bound vertex program */
126 struct st_fragment_program
*fp
; /**< Currently bound fragment program */
127 struct st_geometry_program
*gp
; /**< Currently bound geometry program */
129 struct st_vp_variant
*vp_variant
;
130 struct st_fp_variant
*fp_variant
;
131 struct st_gp_variant
*gp_variant
;
133 struct gl_texture_object
*default_texture
;
136 struct gl_program_cache
*cache
;
137 struct st_fragment_program
*program
; /**< cur pixel transfer prog */
138 GLuint xfer_prog_sn
; /**< pixel xfer program serial no. */
139 GLuint user_prog_sn
; /**< user fragment program serial no. */
140 struct st_fragment_program
*combined_prog
;
141 GLuint combined_prog_sn
;
142 struct pipe_resource
*pixelmap_texture
;
143 struct pipe_sampler_view
*pixelmap_sampler_view
;
144 boolean pixelmap_enabled
; /**< use the pixelmap texture? */
149 struct pipe_rasterizer_state rasterizer
;
150 struct pipe_sampler_state samplers
[2];
151 enum pipe_format tex_format
;
153 float vertices
[4][3][4]; /**< vertex pos + color + texcoord */
154 struct pipe_resource
*vbuf
;
155 unsigned vbuf_slot
; /* next free slot in vbuf */
156 struct bitmap_cache
*cache
;
159 /** for glDraw/CopyPixels */
161 struct gl_fragment_program
*shaders
[4];
162 void *vert_shaders
[2]; /**< ureg shaders */
167 struct pipe_rasterizer_state raster
;
168 struct pipe_viewport_state viewport
;
169 struct pipe_clip_state clip
;
172 float vertices
[4][2][4]; /**< vertex pos + color */
173 struct pipe_resource
*vbuf
;
175 boolean enable_ds_separate
;
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
;
190 void *winsys_drawable_handle
;
192 /* User vertex buffers. */
194 struct pipe_resource
*buffer
;
199 /** Attribute stride */
201 } user_attrib
[PIPE_MAX_ATTRIBS
];
202 unsigned num_user_attribs
;
206 /* Need this so that we can implement Mesa callbacks in this module.
208 static INLINE
struct st_context
*st_context(struct gl_context
*ctx
)
215 * Wrapper for struct gl_framebuffer.
216 * This is an opaque type to the outside world.
218 struct st_framebuffer
220 struct gl_framebuffer Base
;
223 struct st_framebuffer_iface
*iface
;
224 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
&& fb
->Name
== 0) {
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
);