1 /**************************************************************************
3 * Copyright 2003 VMware, Inc.
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 VMWARE 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)
53 #define ST_NEW_RASTERIZER (1 << 7)
54 #define ST_NEW_UNIFORM_BUFFER (1 << 8)
57 struct st_state_flags
{
62 struct st_tracked_state
{
64 struct st_state_flags dirty
;
65 void (*update
)( struct st_context
*st
);
72 struct st_context_iface iface
;
74 struct gl_context
*ctx
;
76 struct pipe_context
*pipe
;
78 struct u_upload_mgr
*uploader
, *indexbuf_uploader
, *constbuf_uploader
;
80 struct draw_context
*draw
; /**< For selection/feedback/rastpos only */
81 struct draw_stage
*feedback_stage
; /**< For GL_FEEDBACK rendermode */
82 struct draw_stage
*selection_stage
; /**< For GL_SELECT rendermode */
83 struct draw_stage
*rastpos_stage
; /**< For glRasterPos */
84 GLboolean clamp_frag_color_in_shader
;
85 GLboolean clamp_vert_color_in_shader
;
86 boolean has_stencil_export
; /**< can do shader stencil export? */
87 boolean has_time_elapsed
;
88 boolean has_shader_model3
;
89 boolean prefer_blit_based_texture_transfer
;
91 boolean needs_texcoord_semantic
;
92 boolean apply_texture_swizzle_to_border_color
;
94 /* On old libGL's for linux we need to invalidate the drawables
95 * on glViewpport calls, this is set via a option.
97 boolean invalidate_on_gl_viewport
;
99 boolean vertex_array_out_of_memory
;
101 /* Some state is contained in constant objects.
102 * Other state is just parameter values.
105 struct pipe_blend_state blend
;
106 struct pipe_depth_stencil_alpha_state depth_stencil
;
107 struct pipe_rasterizer_state rasterizer
;
108 struct pipe_sampler_state samplers
[PIPE_SHADER_TYPES
][PIPE_MAX_SAMPLERS
];
109 GLuint num_samplers
[PIPE_SHADER_TYPES
];
110 struct pipe_sampler_view
*sampler_views
[PIPE_SHADER_TYPES
][PIPE_MAX_SAMPLERS
];
111 GLuint num_sampler_views
[PIPE_SHADER_TYPES
];
112 struct pipe_clip_state clip
;
116 } constants
[PIPE_SHADER_TYPES
];
117 struct pipe_framebuffer_state framebuffer
;
118 struct pipe_scissor_state scissor
;
119 struct pipe_viewport_state viewport
;
120 unsigned sample_mask
;
122 GLuint poly_stipple
[32]; /**< In OpenGL's bottom-to-top order */
124 GLuint fb_orientation
;
130 struct st_state_flags dirty
;
132 GLboolean missing_textures
;
133 GLboolean vertdata_edgeflags
;
135 /** Mapping from VARYING_SLOT_x to post-transformed vertex slot */
136 const GLuint
*vertex_result_to_slot
;
138 struct st_vertex_program
*vp
; /**< Currently bound vertex program */
139 struct st_fragment_program
*fp
; /**< Currently bound fragment program */
140 struct st_geometry_program
*gp
; /**< Currently bound geometry program */
142 struct st_vp_variant
*vp_variant
;
143 struct st_fp_variant
*fp_variant
;
144 struct st_gp_variant
*gp_variant
;
146 struct gl_texture_object
*default_texture
;
149 struct gl_program_cache
*cache
;
150 struct st_fragment_program
*program
; /**< cur pixel transfer prog */
151 GLuint xfer_prog_sn
; /**< pixel xfer program serial no. */
152 GLuint user_prog_sn
; /**< user fragment program serial no. */
153 struct st_fragment_program
*combined_prog
;
154 GLuint combined_prog_sn
;
155 struct pipe_resource
*pixelmap_texture
;
156 struct pipe_sampler_view
*pixelmap_sampler_view
;
157 boolean pixelmap_enabled
; /**< use the pixelmap texture? */
162 struct pipe_rasterizer_state rasterizer
;
163 struct pipe_sampler_state samplers
[2];
164 enum pipe_format tex_format
;
166 struct bitmap_cache
*cache
;
169 /** for glDraw/CopyPixels */
171 struct gl_fragment_program
*shaders
[4];
172 void *vert_shaders
[2]; /**< ureg shaders */
177 struct pipe_rasterizer_state raster
;
178 struct pipe_viewport_state viewport
;
184 /** used for anything using util_draw_vertex_buffer */
185 struct pipe_vertex_element velems_util_draw
[3];
187 void *passthrough_fs
; /**< simple pass-through frag shader */
189 enum pipe_texture_target internal_target
;
190 struct gen_mipmap_state
*gen_mipmap
;
192 struct cso_context
*cso_context
;
194 void *winsys_drawable_handle
;
196 /* The number of vertex buffers from the last call of validate_arrays. */
197 unsigned last_num_vbuffers
;
202 struct st_config_options options
;
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
];
231 extern void st_init_driver_functions(struct dd_function_table
*functions
);
233 void st_invalidate_state(struct gl_context
* ctx
, GLuint new_state
);
241 st_fb_orientation(const struct gl_framebuffer
*fb
)
243 if (fb
&& _mesa_is_winsys_fbo(fb
)) {
244 /* Drawing into a window (on-screen buffer).
246 * Negate Y scale to flip image vertically.
247 * The NDC Y coords prior to viewport transformation are in the range
248 * [y=-1=bottom, y=1=top]
249 * Hardware window coords are in the range [y=0=top, y=H-1=bottom] where
250 * H is the window height.
251 * Use the viewport transformation to invert Y.
256 /* Drawing into user-created FBO (very likely a texture).
258 * For textures, T=0=Bottom, so by extension Y=0=Bottom for rendering.
265 /** clear-alloc a struct-sized object, with casting */
266 #define ST_CALLOC_STRUCT(T) (struct T *) calloc(1, sizeof(struct T))
269 extern struct st_context
*
270 st_create_context(gl_api api
, struct pipe_context
*pipe
,
271 const struct gl_config
*visual
,
272 struct st_context
*share
,
273 const struct st_config_options
*options
);
276 st_destroy_context(struct st_context
*st
);