1 //struct dd_function_table;
2 /**************************************************************************
4 * Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas.
7 * Permission is hereby granted, free of charge, to any person obtaining a
8 * copy of this software and associated documentation files (the
9 * "Software"), to deal in the Software without restriction, including
10 * without limitation the rights to use, copy, modify, merge, publish,
11 * distribute, sub license, and/or sell copies of the Software, and to
12 * permit persons to whom the Software is furnished to do so, subject to
13 * the following conditions:
15 * The above copyright notice and this permission notice (including the
16 * next paragraph) shall be included in all copies or substantial portions
19 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
20 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
21 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
22 * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
23 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
24 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
25 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
27 **************************************************************************/
32 #include "main/mtypes.h"
33 #include "pipe/p_state.h"
34 #include "state_tracker/st_api.h"
38 struct dd_function_table
;
41 struct gen_mipmap_state
;
43 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
;
73 struct pipe_context
*pipe
;
75 struct draw_context
*draw
; /**< For selection/feedback/rastpos only */
76 struct draw_stage
*feedback_stage
; /**< For GL_FEEDBACK rendermode */
77 struct draw_stage
*selection_stage
; /**< For GL_SELECT rendermode */
78 struct draw_stage
*rastpos_stage
; /**< For glRasterPos */
81 /* On old libGL's for linux we need to invalidate the drawables
82 * on glViewpport calls, this is set via a option.
84 boolean invalidate_on_gl_viewport
;
86 /* Some state is contained in constant objects.
87 * Other state is just parameter values.
90 struct pipe_blend_state blend
;
91 struct pipe_depth_stencil_alpha_state depth_stencil
;
92 struct pipe_rasterizer_state rasterizer
;
93 struct pipe_sampler_state samplers
[PIPE_MAX_SAMPLERS
];
94 struct pipe_sampler_state
*sampler_list
[PIPE_MAX_SAMPLERS
];
95 struct pipe_clip_state clip
;
96 struct pipe_resource
*constants
[PIPE_SHADER_TYPES
];
97 struct pipe_framebuffer_state framebuffer
;
98 struct pipe_sampler_view
*sampler_views
[PIPE_MAX_SAMPLERS
];
99 struct pipe_scissor_state scissor
;
100 struct pipe_viewport_state viewport
;
101 unsigned sample_mask
;
106 GLuint poly_stipple
[32]; /**< In OpenGL's bottom-to-top order */
110 struct st_tracked_state tracked_state
[PIPE_SHADER_TYPES
];
115 struct gl_fragment_program
*fragment_program
;
121 struct st_state_flags dirty
;
123 GLboolean missing_textures
;
124 GLboolean vertdata_edgeflags
;
126 /** Mapping from VERT_RESULT_x to post-transformed vertex slot */
127 const GLuint
*vertex_result_to_slot
;
129 struct st_vertex_program
*vp
; /**< Currently bound vertex program */
130 struct st_fragment_program
*fp
; /**< Currently bound fragment program */
131 struct st_geometry_program
*gp
; /**< Currently bound geometry program */
133 struct st_vp_varient
*vp_varient
;
135 struct gl_texture_object
*default_texture
;
138 struct gl_program_cache
*cache
;
139 struct st_fragment_program
*program
; /**< cur pixel transfer prog */
140 GLuint xfer_prog_sn
; /**< pixel xfer program serial no. */
141 GLuint user_prog_sn
; /**< user fragment program serial no. */
142 struct st_fragment_program
*combined_prog
;
143 GLuint combined_prog_sn
;
144 struct pipe_resource
*pixelmap_texture
;
145 struct pipe_sampler_view
*pixelmap_sampler_view
;
146 boolean pixelmap_enabled
; /**< use the pixelmap texture? */
151 struct pipe_rasterizer_state rasterizer
;
152 struct pipe_sampler_state sampler
;
153 enum pipe_format tex_format
;
155 float vertices
[4][3][4]; /**< vertex pos + color + texcoord */
156 struct pipe_resource
*vbuf
;
157 unsigned vbuf_slot
; /* next free slot in vbuf */
158 struct bitmap_cache
*cache
;
161 /** for glDraw/CopyPixels */
163 struct st_fragment_program
*z_shader
;
164 void *vert_shaders
[2]; /**< ureg shaders */
169 struct pipe_rasterizer_state raster
;
170 struct pipe_viewport_state viewport
;
171 struct pipe_clip_state clip
;
174 float vertices
[4][2][4]; /**< vertex pos + color */
175 struct pipe_resource
*vbuf
;
177 boolean enable_ds_separate
;
180 /** used for anything using util_draw_vertex_buffer */
181 struct pipe_vertex_element velems_util_draw
[3];
183 void *passthrough_fs
; /**< simple pass-through frag shader */
185 struct gen_mipmap_state
*gen_mipmap
;
186 struct blit_state
*blit
;
188 struct cso_context
*cso_context
;
191 void *winsys_drawable_handle
;
195 /* Need this so that we can implement Mesa callbacks in this module.
197 static INLINE
struct st_context
*st_context(GLcontext
*ctx
)
204 * Wrapper for GLframebuffer.
205 * This is an opaque type to the outside world.
207 struct st_framebuffer
212 struct st_framebuffer_iface
*iface
;
213 enum st_attachment_type statts
[ST_ATTACHMENT_COUNT
];
219 extern void st_init_driver_functions(struct dd_function_table
*functions
);
221 void st_invalidate_state(GLcontext
* ctx
, GLuint new_state
);
229 st_fb_orientation(const struct gl_framebuffer
*fb
)
231 if (fb
&& fb
->Name
== 0) {
232 /* Drawing into a window (on-screen buffer).
234 * Negate Y scale to flip image vertically.
235 * The NDC Y coords prior to viewport transformation are in the range
236 * [y=-1=bottom, y=1=top]
237 * Hardware window coords are in the range [y=0=top, y=H-1=bottom] where
238 * H is the window height.
239 * Use the viewport transformation to invert Y.
244 /* Drawing into user-created FBO (very likely a texture).
246 * For textures, T=0=Bottom, so by extension Y=0=Bottom for rendering.
253 /** clear-alloc a struct-sized object, with casting */
254 #define ST_CALLOC_STRUCT(T) (struct T *) calloc(1, sizeof(struct T))
260 extern struct st_context
*
261 st_create_context(gl_api api
, struct pipe_context
*pipe
,
262 const __GLcontextModes
*visual
,
263 struct st_context
*share
);
266 st_destroy_context(struct st_context
*st
);