1 /**************************************************************************
3 * Copyright 2007 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 **************************************************************************/
28 /* Authors: Keith Whitwell <keith@tungstengraphics.com>
36 #include "pipe/p_state.h"
37 #include "pipe/p_context.h"
42 struct softpipe_surface
;
54 #define SP_NEW_VIEWPORT 0x1
55 #define SP_NEW_SETUP 0x2
57 #define SP_NEW_BLEND 0x8
58 #define SP_NEW_CLIP 0x10
59 #define SP_NEW_SCISSOR 0x20
60 #define SP_NEW_STIPPLE 0x40
61 #define SP_NEW_FRAMEBUFFER 0x80
62 #define SP_NEW_ALPHA_TEST 0x100
63 #define SP_NEW_DEPTH_TEST 0x200
64 #define SP_NEW_SAMPLER 0x400
65 #define SP_NEW_TEXTURE 0x800
66 #define SP_NEW_STENCIL 0x1000
69 struct softpipe_context
{
70 struct pipe_context pipe
; /**< base class */
72 /* The most recent drawing state as set by the driver:
74 struct pipe_alpha_test_state alpha_test
;
75 struct pipe_blend_state blend
;
76 struct pipe_blend_color blend_color
;
77 struct pipe_clear_color_state clear_color
;
78 struct pipe_clip_state clip
;
79 struct pipe_depth_state depth_test
;
80 struct pipe_framebuffer_state framebuffer
;
81 struct pipe_fs_state fs
;
82 struct pipe_poly_stipple poly_stipple
;
83 struct pipe_scissor_state scissor
;
84 struct pipe_sampler_state sampler
[PIPE_MAX_SAMPLERS
];
85 struct pipe_setup_state setup
;
86 struct pipe_stencil_state stencil
;
87 struct pipe_texture_object
*texture
[PIPE_MAX_SAMPLERS
];
88 struct pipe_viewport_state viewport
;
91 /* Setup derived state. TODO: this should be passed in the program
92 * tokens as parameters to DECL instructions.
94 * For now we just set colors to CONST on flatshade, textures to
95 * perspective always and everything else to linear.
97 enum interp_mode interp
[PIPE_ATTRIB_MAX
];
100 /* FS + setup derived state:
103 /** Map fragment program attribute to quad/coef array slot */
104 GLuint fp_attr_to_slot
[PIPE_ATTRIB_MAX
];
105 /** Map vertex format attribute to a vertex attribute slot */
106 GLuint vf_attr_to_slot
[PIPE_ATTRIB_MAX
];
108 GLuint nr_frag_attrs
; /**< number of active fragment attribs */
109 GLbitfield attr_mask
; /**< bitfield of VF_ATTRIB_ indexes/bits */
111 GLboolean need_z
; /**< produce quad/fragment Z values? */
112 GLboolean need_w
; /**< produce quad/fragment W values? */
114 /* Stipple derived state:
116 GLubyte stipple_masks
[16][16];
118 /** Software quad rendering pipeline */
120 struct quad_stage
*polygon_stipple
;
121 struct quad_stage
*shade
;
122 struct quad_stage
*alpha_test
;
123 struct quad_stage
*stencil_test
;
124 struct quad_stage
*depth_test
;
125 struct quad_stage
*bufloop
;
126 struct quad_stage
*blend
;
127 struct quad_stage
*colormask
;
128 struct quad_stage
*output
;
130 struct quad_stage
*first
; /**< points to one of the above stages */
133 /** The primitive drawing context */
134 struct draw_context
*draw
;
136 struct pipe_surface
*cbuf
; /**< current color buffer (one of cbufs) */
142 static INLINE
struct softpipe_context
*
143 softpipe_context( struct pipe_context
*pipe
)
145 return (struct softpipe_context
*)pipe
;
149 #endif /* SP_CONTEXT_H */