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"
37 struct dd_function_table
;
40 struct gen_mipmap_state
;
42 struct st_fragment_program
;
46 #define ST_NEW_MESA (1 << 0) /* Mesa state has changed */
47 #define ST_NEW_FRAGMENT_PROGRAM (1 << 1)
48 #define ST_NEW_VERTEX_PROGRAM (1 << 2)
49 #define ST_NEW_FRAMEBUFFER (1 << 3)
50 #define ST_NEW_EDGEFLAGS_DATA (1 << 4)
51 #define ST_NEW_GEOMETRY_PROGRAM (1 << 5)
52 #define ST_NEW_VERTEX_ARRAYS (1 << 6)
55 struct st_state_flags
{
60 struct st_tracked_state
{
62 struct st_state_flags dirty
;
63 void (*update
)( struct st_context
*st
);
70 struct st_context_iface iface
;
72 struct gl_context
*ctx
;
74 struct pipe_context
*pipe
;
76 struct u_upload_mgr
*uploader
, *indexbuf_uploader
, *constbuf_uploader
;
78 struct draw_context
*draw
; /**< For selection/feedback/rastpos only */
79 struct draw_stage
*feedback_stage
; /**< For GL_FEEDBACK rendermode */
80 struct draw_stage
*selection_stage
; /**< For GL_SELECT rendermode */
81 struct draw_stage
*rastpos_stage
; /**< For glRasterPos */
82 GLboolean clamp_frag_color_in_shader
;
83 GLboolean clamp_vert_color_in_shader
;
84 boolean has_stencil_export
; /**< can do shader stencil export? */
85 boolean has_time_elapsed
;
86 boolean has_shader_model3
;
87 boolean prefer_blit_based_texture_transfer
;
89 boolean needs_texcoord_semantic
;
91 /* On old libGL's for linux we need to invalidate the drawables
92 * on glViewpport calls, this is set via a option.
94 boolean invalidate_on_gl_viewport
;
96 boolean vertex_array_out_of_memory
;
98 /* Some state is contained in constant objects.
99 * Other state is just parameter values.
102 struct pipe_blend_state blend
;
103 struct pipe_depth_stencil_alpha_state depth_stencil
;
104 struct pipe_rasterizer_state rasterizer
;
105 struct pipe_sampler_state samplers
[PIPE_SHADER_TYPES
][PIPE_MAX_SAMPLERS
];
106 GLuint num_samplers
[PIPE_SHADER_TYPES
];
107 struct pipe_sampler_view
*sampler_views
[PIPE_SHADER_TYPES
][PIPE_MAX_SAMPLERS
];
108 GLuint num_sampler_views
[PIPE_SHADER_TYPES
];
109 struct pipe_clip_state clip
;
113 } constants
[PIPE_SHADER_TYPES
];
114 struct pipe_framebuffer_state framebuffer
;
115 struct pipe_scissor_state scissor
;
116 struct pipe_viewport_state viewport
;
117 unsigned sample_mask
;
119 GLuint poly_stipple
[32]; /**< In OpenGL's bottom-to-top order */
121 GLuint fb_orientation
;
127 struct st_state_flags dirty
;
129 GLboolean missing_textures
;
130 GLboolean vertdata_edgeflags
;
132 /** Mapping from VARYING_SLOT_x to post-transformed vertex slot */
133 const GLuint
*vertex_result_to_slot
;
135 struct st_vertex_program
*vp
; /**< Currently bound vertex program */
136 struct st_fragment_program
*fp
; /**< Currently bound fragment program */
137 struct st_geometry_program
*gp
; /**< Currently bound geometry program */
139 struct st_vp_variant
*vp_variant
;
140 struct st_fp_variant
*fp_variant
;
141 struct st_gp_variant
*gp_variant
;
143 struct gl_texture_object
*default_texture
;
146 struct gl_program_cache
*cache
;
147 struct st_fragment_program
*program
; /**< cur pixel transfer prog */
148 GLuint xfer_prog_sn
; /**< pixel xfer program serial no. */
149 GLuint user_prog_sn
; /**< user fragment program serial no. */
150 struct st_fragment_program
*combined_prog
;
151 GLuint combined_prog_sn
;
152 struct pipe_resource
*pixelmap_texture
;
153 struct pipe_sampler_view
*pixelmap_sampler_view
;
154 boolean pixelmap_enabled
; /**< use the pixelmap texture? */
159 struct pipe_rasterizer_state rasterizer
;
160 struct pipe_sampler_state samplers
[2];
161 enum pipe_format tex_format
;
163 struct bitmap_cache
*cache
;
166 /** for glDraw/CopyPixels */
168 struct gl_fragment_program
*shaders
[4];
169 void *vert_shaders
[2]; /**< ureg shaders */
174 struct pipe_rasterizer_state raster
;
175 struct pipe_viewport_state viewport
;
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 enum pipe_texture_target internal_target
;
186 struct gen_mipmap_state
*gen_mipmap
;
188 struct cso_context
*cso_context
;
190 void *winsys_drawable_handle
;
192 /* The number of vertex buffers from the last call of validate_arrays. */
193 unsigned last_num_vbuffers
;
198 struct st_config_options options
;
202 /* Need this so that we can implement Mesa callbacks in this module.
204 static INLINE
struct st_context
*st_context(struct gl_context
*ctx
)
211 * Wrapper for struct gl_framebuffer.
212 * This is an opaque type to the outside world.
214 struct st_framebuffer
216 struct gl_framebuffer Base
;
219 struct st_framebuffer_iface
*iface
;
220 enum st_attachment_type statts
[ST_ATTACHMENT_COUNT
];
227 extern void st_init_driver_functions(struct dd_function_table
*functions
);
229 void st_invalidate_state(struct gl_context
* ctx
, GLuint new_state
);
237 st_fb_orientation(const struct gl_framebuffer
*fb
)
239 if (fb
&& _mesa_is_winsys_fbo(fb
)) {
240 /* Drawing into a window (on-screen buffer).
242 * Negate Y scale to flip image vertically.
243 * The NDC Y coords prior to viewport transformation are in the range
244 * [y=-1=bottom, y=1=top]
245 * Hardware window coords are in the range [y=0=top, y=H-1=bottom] where
246 * H is the window height.
247 * Use the viewport transformation to invert Y.
252 /* Drawing into user-created FBO (very likely a texture).
254 * For textures, T=0=Bottom, so by extension Y=0=Bottom for rendering.
261 /** clear-alloc a struct-sized object, with casting */
262 #define ST_CALLOC_STRUCT(T) (struct T *) calloc(1, sizeof(struct T))
265 extern struct st_context
*
266 st_create_context(gl_api api
, struct pipe_context
*pipe
,
267 const struct gl_config
*visual
,
268 struct st_context
*share
,
269 const struct st_config_options
*options
);
272 st_destroy_context(struct st_context
*st
);