src/gallium/drivers/r300/r300_context.h

   1 /*
   2  * Copyright 2008 Corbin Simpson <MostAwesomeDude@gmail.com>
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * on the rights to use, copy, modify, merge, publish, distribute, sub
   8  * license, and/or sell copies of the Software, and to permit persons to whom
   9  * the Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice (including the next
  12  * paragraph) shall be included in all copies or substantial portions of the
  13  * Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  16  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
  18  * THE AUTHOR(S) AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM,
  19  * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
  20  * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
  21  * USE OR OTHER DEALINGS IN THE SOFTWARE. */
  22
  23 #ifndef R300_CONTEXT_H
  24 #define R300_CONTEXT_H
  25
  26 #include "draw/draw_context.h"
  27 #include "pipe/p_context.h"
  28 #include "util/u_memory.h"
  29
  30 #include "r300_screen.h"
  31 #include "r300_winsys.h"
  32
  33 struct r300_blend_state {
  34     uint32_t blend_control;       /* R300_RB3D_CBLEND: 0x4e04 */
  35     uint32_t alpha_blend_control; /* R300_RB3D_ABLEND: 0x4e08 */
  36     uint32_t rop;                 /* R300_RB3D_ROPCNTL: 0x4e18 */
  37     uint32_t dither;              /* R300_RB3D_DITHER_CTL: 0x4e50 */
  38 };
  39
  40 struct r300_blend_color_state {
  41     /* RV515 and earlier */
  42     uint32_t blend_color;            /* R300_RB3D_BLEND_COLOR: 0x4e10 */
  43     /* R520 and newer */
  44     uint32_t blend_color_red_alpha;  /* R500_RB3D_CONSTANT_COLOR_AR: 0x4ef8 */
  45     uint32_t blend_color_green_blue; /* R500_RB3D_CONSTANT_COLOR_GB: 0x4efc */
  46 };
  47
  48 struct r300_dsa_state {
  49     uint32_t alpha_function;    /* R300_FG_ALPHA_FUNC: 0x4bd4 */
  50     uint32_t alpha_reference;   /* R500_FG_ALPHA_VALUE: 0x4be0 */
  51     uint32_t z_buffer_control;  /* R300_ZB_CNTL: 0x4f00 */
  52     uint32_t z_stencil_control; /* R300_ZB_ZSTENCILCNTL: 0x4f04 */
  53     uint32_t stencil_ref_mask;  /* R300_ZB_STENCILREFMASK: 0x4f08 */
  54     uint32_t z_buffer_top;      /* R300_ZB_ZTOP: 0x4f14 */
  55     uint32_t stencil_ref_bf;    /* R500_ZB_STENCILREFMASK_BF: 0x4fd4 */
  56 };
  57
  58 struct r300_rs_state {
  59     uint32_t vap_control_status;    /* R300_VAP_CNTL_STATUS: 0x2140 */
  60     uint32_t depth_scale_front;     /* R300_SU_POLY_OFFSET_FRONT_SCALE: 0x42a4 */
  61     uint32_t depth_offset_front;    /* R300_SU_POLY_OFFSET_FRONT_OFFSET: 0x42a8 */
  62     uint32_t depth_scale_back;      /* R300_SU_POLY_OFFSET_BACK_SCALE: 0x42ac */
  63     uint32_t depth_offset_back;     /* R300_SU_POLY_OFFSET_BACK_OFFSET: 0x42b0 */
  64     uint32_t polygon_offset_enable; /* R300_SU_POLY_OFFSET_ENABLE: 0x42b4 */
  65     uint32_t cull_mode;             /* R300_SU_CULL_MODE: 0x42b8 */
  66 };
  67
  68 struct r300_sampler_state {
  69 };
  70
  71 struct r300_scissor_state {
  72     uint32_t scissor_top_left;     /* R300_SC_SCISSORS_TL: 0x43e0 */
  73     uint32_t scissor_bottom_right; /* R300_SC_SCISSORS_BR: 0x43e4 */
  74 };
  75
  76 #define R300_NEW_BLEND          0x0001
  77 #define R300_NEW_BLEND_COLOR    0x0002
  78 #define R300_NEW_DSA            0x0004
  79 #define R300_NEW_RS             0x0008
  80 #define R300_NEW_SAMPLER        0x0010
  81 #define R300_NEW_SCISSOR        0x1000
  82 #define R300_NEW_KITCHEN_SINK   0x1fff
  83
  84 struct r300_context {
  85     /* Parent class */
  86     struct pipe_context context;
  87
  88     /* The interface to the windowing system, etc. */
  89     struct r300_winsys* winsys;
  90     /* Draw module. Used mostly for SW TCL. */
  91     struct draw_context* draw;
  92
  93     /* Various CSO state objects. */
  94     /* Blend state. */
  95     struct r300_blend_state* blend_state;
  96     /* Blend color state. */
  97     struct r300_blend_color_state* blend_color_state;
  98     /* Depth, stencil, and alpha state. */
  99     struct r300_dsa_state* dsa_state;
 100     /* Rasterizer state. */
 101     struct r300_rs_state* rs_state;
 102     /* Sampler states. */
 103     struct r300_sampler_state* sampler_states[8];
 104     int sampler_count;
 105     /* Scissor state. */
 106     struct r300_scissor_state* scissor_state;
 107     /* Bitmask of dirty state objects. */
 108     uint32_t dirty_state;
 109     /* Flag indicating whether or not the HW is dirty. */
 110     uint32_t dirty_hw;
 111 };
 112
 113 /* Convenience cast wrapper. */
 114 static struct r300_context* r300_context(struct pipe_context* context) {
 115     return (struct r300_context*)context;
 116 }
 117
 118 /* Context initialization. */
 119 void r300_init_state_functions(struct r300_context* r300);
 120 void r300_init_surface_functions(struct r300_context* r300);
 121
 122 struct pipe_context* r300_create_context(struct pipe_screen* screen,
 123                                          struct pipe_winsys* winsys,
 124                                          struct r300_winsys* r300_winsys);
 125
 126 #endif /* R300_CONTEXT_H */