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/**************************************************************************
*
* Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
* All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sub license, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice (including the
* next paragraph) shall be included in all copies or substantial portions
* of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
* IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*
**************************************************************************/
/* Authors: Keith Whitwell <keith@tungstengraphics.com>
*/
#ifndef SP_CONTEXT_H
#define SP_CONTEXT_H
#include "pipe/p_state.h"
#include "pipe/p_context.h"
#include "sp_quad.h"
struct softpipe_surface;
struct softpipe_winsys;
struct draw_context;
struct draw_stage;
enum interp_mode {
INTERP_CONSTANT,
INTERP_LINEAR,
INTERP_PERSPECTIVE
};
#define SP_NEW_VIEWPORT 0x1
#define SP_NEW_SETUP 0x2
#define SP_NEW_FS 0x4
#define SP_NEW_BLEND 0x8
#define SP_NEW_CLIP 0x10
#define SP_NEW_SCISSOR 0x20
#define SP_NEW_STIPPLE 0x40
#define SP_NEW_FRAMEBUFFER 0x80
#define SP_NEW_ALPHA_TEST 0x100
#define SP_NEW_DEPTH_TEST 0x200
#define SP_NEW_SAMPLER 0x400
#define SP_NEW_TEXTURE 0x800
#define SP_NEW_STENCIL 0x1000
#define SP_NEW_VERTEX 0x2000
#define SP_NEW_VS 0x4000
struct softpipe_context {
struct pipe_context pipe; /**< base class */
struct softpipe_winsys *winsys; /**< window system interface */
/* The most recent drawing state as set by the driver:
*/
struct pipe_alpha_test_state alpha_test;
struct pipe_blend_state blend;
struct pipe_blend_color blend_color;
struct pipe_clear_color_state clear_color;
struct pipe_clip_state clip;
struct pipe_depth_state depth_test;
struct pipe_framebuffer_state framebuffer;
struct pipe_shader_state fs;
struct pipe_shader_state vs;
struct pipe_poly_stipple poly_stipple;
struct pipe_scissor_state scissor;
struct pipe_sampler_state sampler[PIPE_MAX_SAMPLERS];
struct pipe_setup_state setup;
struct pipe_stencil_state stencil;
struct pipe_mipmap_tree *texture[PIPE_MAX_SAMPLERS];
struct pipe_viewport_state viewport;
struct pipe_vertex_buffer vertex_buffer[PIPE_ATTRIB_MAX];
struct pipe_vertex_element vertex_element[PIPE_ATTRIB_MAX];
unsigned dirty;
/* Setup derived state. TODO: this should be passed in the program
* tokens as parameters to DECL instructions.
*
* For now we just set colors to CONST on flatshade, textures to
* perspective always and everything else to linear.
*/
enum interp_mode interp[PIPE_ATTRIB_MAX];
/* FS + setup derived state:
*/
/** Map fragment program attribute to quad/coef array slot */
unsigned fp_attr_to_slot[PIPE_ATTRIB_MAX];
/** Map vertex format attribute to a vertex attribute slot */
unsigned vf_attr_to_slot[PIPE_ATTRIB_MAX];
unsigned nr_attrs;
unsigned nr_frag_attrs; /**< number of active fragment attribs */
unsigned attr_mask; /**< bitfield of VF_ATTRIB_ indexes/bits */
boolean need_z; /**< produce quad/fragment Z values? */
boolean need_w; /**< produce quad/fragment W values? */
#if 0
/* Stipple derived state:
*/
ubyte stipple_masks[16][16];
#endif
/** Derived from scissor and surface bounds: */
struct pipe_scissor_state cliprect;
unsigned occlusion_counter;
unsigned line_stipple_counter;
/** Software quad rendering pipeline */
struct {
struct quad_stage *polygon_stipple;
struct quad_stage *shade;
struct quad_stage *alpha_test;
struct quad_stage *stencil_test;
struct quad_stage *depth_test;
struct quad_stage *occlusion;
struct quad_stage *coverage;
struct quad_stage *bufloop;
struct quad_stage *blend;
struct quad_stage *colormask;
struct quad_stage *output;
struct quad_stage *first; /**< points to one of the above stages */
} quad;
/** The primitive drawing context */
struct draw_context *draw;
struct pipe_surface *cbuf; /**< current color buffer (one of cbufs) */
};
static INLINE struct softpipe_context *
softpipe_context( struct pipe_context *pipe )
{
return (struct softpipe_context *)pipe;
}
#endif /* SP_CONTEXT_H */
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