src/gallium/drivers/r300/r300_emit.c

   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 /* r300_emit: Functions for emitting state. */
  24
  25 #include "r300_emit.h"
  26
  27 void r300_emit_blend_state(struct r300_context* r300,
  28                            struct r300_blend_state* blend)
  29 {
  30     CS_LOCALS(r300);
  31     BEGIN_CS(7);
  32     OUT_CS_REG_SEQ(R300_RB3D_CBLEND, 2);
  33     OUT_CS(blend->blend_control);
  34     OUT_CS(blend->alpha_blend_control);
  35     OUT_CS_REG(R300_RB3D_ROPCNTL, blend->rop);
  36     OUT_CS_REG(R300_RB3D_DITHER_CTL, blend->dither);
  37     END_CS;
  38 }
  39
  40 void r300_emit_blend_color_state(struct r300_context* r300,
  41                                  struct r300_blend_color_state* bc)
  42 {
  43     struct r300_screen* r300screen =
  44         (struct r300_screen*)r300->context.screen;
  45     CS_LOCALS(r300);
  46     if (r300screen->caps->is_r500) {
  47         BEGIN_CS(3);
  48         OUT_CS_REG_SEQ(R500_RB3D_CONSTANT_COLOR_AR, 2);
  49         OUT_CS(bc->blend_color_red_alpha);
  50         OUT_CS(bc->blend_color_green_blue);
  51         END_CS;
  52     } else {
  53         BEGIN_CS(2);
  54         OUT_CS_REG(R300_RB3D_BLEND_COLOR, bc->blend_color);
  55         END_CS;
  56     }
  57 }
  58
  59 void r300_emit_dsa_state(struct r300_context* r300,
  60                            struct r300_dsa_state* dsa)
  61 {
  62     struct r300_screen* r300screen =
  63         (struct r300_screen*)r300->context.screen;
  64     CS_LOCALS(r300);
  65     BEGIN_CS(r300screen->caps->is_r500 ? 12 : 10);
  66     OUT_CS_REG(R300_FG_ALPHA_FUNC, dsa->alpha_function);
  67     OUT_CS_REG(R500_FG_ALPHA_VALUE, dsa->alpha_reference);
  68     OUT_CS_REG_SEQ(R300_ZB_CNTL, 3);
  69     OUT_CS(dsa->z_buffer_control);
  70     OUT_CS(dsa->z_stencil_control);
  71     OUT_CS(dsa->stencil_ref_mask);
  72     OUT_CS_REG(R300_ZB_ZTOP, dsa->z_buffer_top);
  73     if (r300screen->caps->is_r500) {
  74         OUT_CS_REG(R500_ZB_STENCILREFMASK_BF, dsa->stencil_ref_bf);
  75     }
  76 }
  77
  78 static void r300_emit_dirty_state(struct r300_context* r300)
  79 {
  80     struct r300_screen* r300screen =
  81         (struct r300_screen*)r300->context.screen;
  82     CS_LOCALS(r300);
  83
  84     if (!(r300->dirty_state) && !(r300->dirty_hw)) {
  85         return;
  86     }
  87
  88     /* XXX check size */
  89
  90     if (r300->dirty_state & R300_NEW_BLEND) {
  91         r300_emit_blend_state(r300, r300->blend_state);
  92     }
  93
  94     if (r300->dirty_state & R300_NEW_BLEND_COLOR) {
  95         r300_emit_blend_color_state(r300, r300->blend_color_state);
  96     }
  97
  98     if (r300->dirty_state & R300_NEW_DSA) {
  99         r300_emit_dsa_state(r300, r300->dsa_state);
 100     }
 101
 102     if (r300->dirty_state & R300_NEW_RASTERIZER) {
 103         struct r300_rs_state* rs = r300->rs_state;
 104         OUT_CS_REG(R300_VAP_CNTL_STATUS, rs->vap_control_status);
 105         /* XXX next six are contiguous regs */
 106         OUT_CS_REG(R300_SU_POLY_OFFSET_FRONT_SCALE, rs->depth_scale_front);
 107         OUT_CS_REG(R300_SU_POLY_OFFSET_FRONT_OFFSET, rs->depth_offset_front);
 108         OUT_CS_REG(R300_SU_POLY_OFFSET_BACK_SCALE, rs->depth_scale_back);
 109         OUT_CS_REG(R300_SU_POLY_OFFSET_BACK_OFFSET, rs->depth_offset_back);
 110         OUT_CS_REG(R300_SU_POLY_OFFSET_ENABLE, rs->polygon_offset_enable);
 111         OUT_CS_REG(R300_SU_CULL_MODE, rs->cull_mode);
 112     }
 113
 114     if (r300->dirty_state & R300_NEW_SCISSOR) {
 115         struct r300_scissor_state* scissor = r300->scissor_state;
 116         /* XXX next two are contiguous regs */
 117         OUT_CS_REG(R300_SC_SCISSORS_TL, scissor->scissor_top_left);
 118         OUT_CS_REG(R300_SC_SCISSORS_BR, scissor->scissor_bottom_right);
 119     }
 120
 121     r300->dirty_state = 0;
 122 }