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 "program/prog_cache.h"
33 #include "pipe/p_state.h"
34 #include "state_tracker/st_api.h"
38 struct st_texture_object
;
39 struct st_fragment_program
;
44 struct gen_mipmap_state
;
49 #define ST_NEW_MESA 0x1 /* Mesa state has changed */
50 #define ST_NEW_FRAGMENT_PROGRAM 0x2
51 #define ST_NEW_VERTEX_PROGRAM 0x4
52 #define ST_NEW_FRAMEBUFFER 0x8
53 #define ST_NEW_EDGEFLAGS_DATA 0x10
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
;
75 struct pipe_context
*pipe
;
77 struct draw_context
*draw
; /**< For selection/feedback/rastpos only */
78 struct draw_stage
*feedback_stage
; /**< For GL_FEEDBACK rendermode */
79 struct draw_stage
*selection_stage
; /**< For GL_SELECT rendermode */
80 struct draw_stage
*rastpos_stage
; /**< For glRasterPos */
83 /* On old libGL's for linux we need to invalidate the drawables
84 * on glViewpport calls, this is set via a option.
86 boolean invalidate_on_gl_viewport
;
88 /* Some state is contained in constant objects.
89 * Other state is just parameter values.
92 struct pipe_blend_state blend
;
93 struct pipe_depth_stencil_alpha_state depth_stencil
;
94 struct pipe_rasterizer_state rasterizer
;
95 struct pipe_sampler_state samplers
[PIPE_MAX_SAMPLERS
];
96 struct pipe_sampler_state
*sampler_list
[PIPE_MAX_SAMPLERS
];
97 struct pipe_clip_state clip
;
98 struct pipe_resource
*constants
[2];
99 struct pipe_framebuffer_state framebuffer
;
100 struct pipe_sampler_view
*sampler_views
[PIPE_MAX_SAMPLERS
];
101 struct pipe_scissor_state scissor
;
102 struct pipe_viewport_state viewport
;
103 unsigned sample_mask
;
108 GLuint poly_stipple
[32]; /**< In OpenGL's bottom-to-top order */
112 struct st_tracked_state tracked_state
[PIPE_SHADER_TYPES
];
117 struct gl_fragment_program
*fragment_program
;
123 struct st_state_flags dirty
;
125 GLboolean missing_textures
;
126 GLboolean vertdata_edgeflags
;
128 /** Mapping from VERT_RESULT_x to post-transformed vertex slot */
129 const GLuint
*vertex_result_to_slot
;
131 struct st_vertex_program
*vp
; /**< Currently bound vertex program */
132 struct st_fragment_program
*fp
; /**< Currently bound fragment program */
134 struct st_vp_varient
*vp_varient
;
136 struct gl_texture_object
*default_texture
;
139 struct gl_program_cache
*cache
;
140 struct st_fragment_program
*program
; /**< cur pixel transfer prog */
141 GLuint xfer_prog_sn
; /**< pixel xfer program serial no. */
142 GLuint user_prog_sn
; /**< user fragment program serial no. */
143 struct st_fragment_program
*combined_prog
;
144 GLuint combined_prog_sn
;
145 struct pipe_resource
*pixelmap_texture
;
146 struct pipe_sampler_view
*pixelmap_sampler_view
;
147 boolean pixelmap_enabled
; /**< use the pixelmap texture? */
152 struct pipe_rasterizer_state rasterizer
;
153 struct pipe_sampler_state sampler
;
154 enum pipe_format tex_format
;
156 float vertices
[4][3][4]; /**< vertex pos + color + texcoord */
157 struct pipe_resource
*vbuf
;
158 unsigned vbuf_slot
; /* next free slot in vbuf */
159 struct bitmap_cache
*cache
;
162 /** for glDraw/CopyPixels */
164 struct st_fragment_program
*z_shader
;
165 void *vert_shaders
[2]; /**< ureg shaders */
170 struct pipe_rasterizer_state raster
;
171 struct pipe_viewport_state viewport
;
172 struct pipe_clip_state clip
;
175 float vertices
[4][2][4]; /**< vertex pos + color */
176 struct pipe_resource
*vbuf
;
178 boolean enable_ds_separate
;
181 /** used for anything using util_draw_vertex_buffer */
182 struct pipe_vertex_element velems_util_draw
[3];
184 void *passthrough_fs
; /**< simple pass-through frag shader */
186 struct gen_mipmap_state
*gen_mipmap
;
187 struct blit_state
*blit
;
189 struct cso_context
*cso_context
;
192 void *winsys_drawable_handle
;
196 /* Need this so that we can implement Mesa callbacks in this module.
198 static INLINE
struct st_context
*st_context(GLcontext
*ctx
)
205 * Wrapper for GLframebuffer.
206 * This is an opaque type to the outside world.
208 struct st_framebuffer
213 struct st_framebuffer_iface
*iface
;
214 enum st_attachment_type statts
[ST_ATTACHMENT_COUNT
];
220 extern void st_init_driver_functions(struct dd_function_table
*functions
);
222 void st_invalidate_state(GLcontext
* ctx
, GLuint new_state
);
230 st_fb_orientation(const struct gl_framebuffer
*fb
)
232 if (fb
&& fb
->Name
== 0) {
233 /* Drawing into a window (on-screen buffer).
235 * Negate Y scale to flip image vertically.
236 * The NDC Y coords prior to viewport transformation are in the range
237 * [y=-1=bottom, y=1=top]
238 * Hardware window coords are in the range [y=0=top, y=H-1=bottom] where
239 * H is the window height.
240 * Use the viewport transformation to invert Y.
245 /* Drawing into user-created FBO (very likely a texture).
247 * For textures, T=0=Bottom, so by extension Y=0=Bottom for rendering.
254 /** clear-alloc a struct-sized object, with casting */
255 #define ST_CALLOC_STRUCT(T) (struct T *) calloc(1, sizeof(struct T))
261 extern struct st_context
*
262 st_create_context(struct pipe_context
*pipe
, const __GLcontextModes
*visual
,
263 struct st_context
*share
);
266 st_destroy_context(struct st_context
*st
);