src/mesa/pipe/p_state.h

   1 /**************************************************************************
   2  *
   3  * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
   4  * All Rights Reserved.
   5  *
   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:
  13  *
  14  * The above copyright notice and this permission notice (including the
  15  * next paragraph) shall be included in all copies or substantial portions
  16  * of the Software.
  17  *
  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.
  25  *
  26  **************************************************************************/
  27
  28 #ifndef PIPE_STATE_H
  29 #define PIPE_STATE_H
  30
  31 #include "mtypes.h"
  32 #include "vf/vf.h"
  33
  34 #define WINDING_NONE 0
  35 #define WINDING_CW   1
  36 #define WINDING_CCW  2
  37 #define WINDING_BOTH (WINDING_CW | WINDING_CCW)
  38
  39 #define FILL_POINT 1
  40 #define FILL_LINE  2
  41 #define FILL_TRI   3
  42
  43 struct pipe_setup_state {
  44    GLuint flatshade:1;
  45    GLuint light_twoside:1;
  46
  47    GLuint front_winding:2;
  48
  49    GLuint cull_mode:2;
  50
  51    GLuint fill_cw:2;
  52    GLuint fill_ccw:2;
  53
  54    GLuint offset_cw:1;
  55    GLuint offset_ccw:1;
  56
  57    GLuint scissor:1;
  58    GLuint poly_stipple:1;
  59
  60    GLuint pad:18;
  61
  62    GLfloat offset_units;
  63    GLfloat offset_scale;
  64 };
  65
  66 struct pipe_poly_stipple {
  67    GLuint stipple[32];
  68 };
  69
  70
  71 struct pipe_viewport {
  72    GLfloat scale[4];
  73    GLfloat translate[4];
  74 };
  75
  76 struct pipe_scissor_rect {
  77    GLshort minx;
  78    GLshort miny;
  79    GLshort maxx;
  80    GLshort maxy;
  81 };
  82
  83
  84 #define PIPE_MAX_CLIP_PLANES 6
  85
  86 struct pipe_clip_state {
  87    GLfloat ucp[PIPE_MAX_CLIP_PLANES][4];
  88    GLuint nr;
  89 };
  90
  91 struct pipe_fs_state {
  92    struct gl_fragment_program *fp;
  93 };
  94
  95 #define PIPE_MAX_CONSTANT 32
  96
  97 struct pipe_constant_buffer {
  98    GLfloat constant[PIPE_MAX_CONSTANT][4];
  99    GLuint nr_constants;
 100 };
 101
 102
 103 struct pipe_depth_state
 104 {
 105    GLuint enabled:1;   /**< depth test enabled? */
 106    GLuint writemask:1; /**< allow depth buffer writes? */
 107    GLuint func:3;      /**< depth test func (PIPE_FUNC_x) */
 108    GLfloat clear;      /**< Clear value in [0,1] (XXX correct place?) */
 109 };
 110
 111 struct pipe_alpha_test_state {
 112    GLuint enable:1;
 113    GLuint func:3;    /**< PIPE_FUNC_x */
 114    GLfloat ref;      /**< reference value */
 115 };
 116
 117 struct pipe_blend_state {
 118    GLuint blend_enable:1;
 119
 120    GLuint rgb_func:3;
 121    GLuint rgb_src_factor:5;
 122    GLuint rgb_dst_factor:5;
 123
 124    GLuint alpha_func:3;
 125    GLuint alpha_src_factor:5;
 126    GLuint alpha_dst_factor:5;
 127
 128    GLuint logicop_enable:1;
 129    GLuint logicop_func:4;
 130 };
 131
 132 struct pipe_blend_color {
 133    GLfloat color[4];
 134 };
 135
 136 struct pipe_clear_color_state
 137 {
 138    GLfloat color[4];
 139 };
 140
 141 struct pipe_line_state
 142 {
 143    GLuint smooth:1;
 144    GLuint stipple:1;
 145    GLushort stipple_pattern;
 146    GLint stipple_factor;
 147    GLfloat width;
 148 };
 149
 150 struct pipe_point_state
 151 {
 152    GLuint smooth:1;
 153    GLfloat size;
 154    GLfloat min_size, max_size;
 155    GLfloat attenuation[3];
 156 };
 157
 158 struct pipe_polygon_state {
 159    GLuint cull_mode:2;     /**< PIPE_POLYGON_CULL_x */
 160    GLuint front_winding:1; /**< PIPE_POLYGON_FRONT_CCW,CW */
 161    GLuint front_mode:2;    /**< PIPE_POLYGON_MODE_x */
 162    GLuint back_mode:2;     /**< PIPE_POLYGON_MODE_x */
 163    GLuint stipple:1;       /**< enable */
 164    GLuint smooth:1;        /**< enable */
 165    /* XXX Polygon offset? */
 166 };
 167
 168 struct pipe_stencil_state {
 169    GLuint front_enabled:1;
 170    GLuint front_func:3;     /**< PIPE_FUNC_x */
 171    GLuint front_fail_op:3;  /**< PIPE_STENCIL_OP_x */
 172    GLuint front_zpass_op:3; /**< PIPE_STENCIL_OP_x */
 173    GLuint front_zfail_op:3; /**< PIPE_STENCIL_OP_x */
 174    GLuint back_enabled:1;
 175    GLuint back_func:3;
 176    GLuint back_fail_op:3;
 177    GLuint back_zpass_op:3;
 178    GLuint back_zfail_op:3;
 179    GLubyte ref_value[2];      /**< [0] = front, [1] = back */
 180    GLubyte value_mask[2];
 181    GLubyte write_mask[2];
 182    GLubyte clear_value;
 183 };
 184
 185
 186 /* This will change for hardware pipes...
 187  */
 188 struct pipe_surface
 189 {
 190    GLuint width, height;
 191    GLubyte *ptr;
 192    GLint stride;
 193    GLuint cpp;
 194    GLuint format;
 195 };
 196
 197
 198 struct pipe_framebuffer_state
 199 {
 200    GLuint num_cbufs;               /**< Number of color bufs to draw to */
 201    struct pipe_surface *cbufs[4];  /**< OpenGL can write to as many as
 202                                         4 color buffers at once */
 203    struct pipe_surface *zbuf;      /**< Z buffer */
 204    struct pipe_surface *sbuf;      /**< Stencil buffer */
 205    struct pipe_surface *abuf;      /**< Accum buffer */
 206 };
 207
 208
 209 /**
 210  * Texture sampler state.
 211  */
 212 struct pipe_sampler_state
 213 {
 214    GLuint wrap_s:3;        /**< PIPE_TEX_WRAP_x */
 215    GLuint wrap_t:3;        /**< PIPE_TEX_WRAP_x */
 216    GLuint wrap_r:3;        /**< PIPE_TEX_WRAP_x */
 217    GLuint min_filter:3;    /**< PIPE_TEX_FILTER_x */
 218    GLuint mag_filter:1;    /**< PIPE_TEX_FILTER_LINEAR or _NEAREST */
 219    GLfloat min_lod;
 220    GLfloat max_lod;
 221    GLfloat lod_bias;
 222 #if 0 /* need these? */
 223    GLint BaseLevel;     /**< min mipmap level, OpenGL 1.2 */
 224    GLint MaxLevel;      /**< max mipmap level, OpenGL 1.2 */
 225 #endif
 226    GLfloat max_anisotropy;
 227    GLuint compare:1;       /**< shadow/depth compare enabled? */
 228    GLenum compare_mode:1;  /**< PIPE_TEX_COMPARE_x */
 229    GLenum compare_func:3;  /**< PIPE_FUNC_x */
 230    GLfloat shadow_ambient; /**< shadow test fail color/intensity */
 231 };
 232
 233 #endif