1 /* -*- mode: C; c-file-style: "k&r"; tab-width 4; indent-tabs-mode: t; -*- */ 2 3 /* 4 * Copyright (C) 2012-2013 Rob Clark <robclark (at) freedesktop.org> 5 * 6 * Permission is hereby granted, free of charge, to any person obtaining a 7 * copy of this software and associated documentation files (the "Software"), 8 * to deal in the Software without restriction, including without limitation 9 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 10 * and/or sell copies of the Software, and to permit persons to whom the 11 * Software is furnished to do so, subject to the following conditions: 12 * 13 * The above copyright notice and this permission notice (including the next 14 * paragraph) shall be included in all copies or substantial portions of the 15 * Software. 16 * 17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 18 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 20 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 21 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 22 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 23 * SOFTWARE. 24 * 25 * Authors: 26 * Rob Clark <robclark (at) freedesktop.org> 27 */ 28 29 #include "pipe/p_state.h" 30 #include "util/u_blend.h" 31 #include "util/u_string.h" 32 #include "util/u_memory.h" 33 34 #include "fd2_blend.h" 35 #include "fd2_context.h" 36 #include "fd2_util.h" 37 38 39 static enum a2xx_rb_blend_opcode 40 blend_func(unsigned func) 41 { 42 switch (func) { 43 case PIPE_BLEND_ADD: 44 return BLEND2_DST_PLUS_SRC; 45 case PIPE_BLEND_MIN: 46 return BLEND2_MIN_DST_SRC; 47 case PIPE_BLEND_MAX: 48 return BLEND2_MAX_DST_SRC; 49 case PIPE_BLEND_SUBTRACT: 50 return BLEND2_SRC_MINUS_DST; 51 case PIPE_BLEND_REVERSE_SUBTRACT: 52 return BLEND2_DST_MINUS_SRC; 53 default: 54 DBG("invalid blend func: %x", func); 55 return 0; 56 } 57 } 58 59 void * 60 fd2_blend_state_create(struct pipe_context *pctx, 61 const struct pipe_blend_state *cso) 62 { 63 const struct pipe_rt_blend_state *rt = &cso->rt[0]; 64 struct fd2_blend_stateobj *so; 65 unsigned rop = PIPE_LOGICOP_COPY; 66 67 if (cso->logicop_enable) 68 rop = cso->logicop_func; /* 1:1 mapping with hw */ 69 70 if (cso->independent_blend_enable) { 71 DBG("Unsupported! independent blend state"); 72 return NULL; 73 } 74 75 so = CALLOC_STRUCT(fd2_blend_stateobj); 76 if (!so) 77 return NULL; 78 79 so->base = *cso; 80 81 so->rb_colorcontrol = A2XX_RB_COLORCONTROL_ROP_CODE(rop); 82 83 so->rb_blendcontrol_rgb = 84 A2XX_RB_BLEND_CONTROL_COLOR_SRCBLEND(fd_blend_factor(rt->rgb_src_factor)) | 85 A2XX_RB_BLEND_CONTROL_COLOR_COMB_FCN(blend_func(rt->rgb_func)) | 86 A2XX_RB_BLEND_CONTROL_COLOR_DESTBLEND(fd_blend_factor(rt->rgb_dst_factor)); 87 88 so->rb_blendcontrol_alpha = 89 A2XX_RB_BLEND_CONTROL_ALPHA_SRCBLEND(fd_blend_factor(rt->alpha_src_factor)) | 90 A2XX_RB_BLEND_CONTROL_ALPHA_COMB_FCN(blend_func(rt->alpha_func)) | 91 A2XX_RB_BLEND_CONTROL_ALPHA_DESTBLEND(fd_blend_factor(rt->alpha_dst_factor)); 92 93 so->rb_blendcontrol_no_alpha_rgb = 94 A2XX_RB_BLEND_CONTROL_COLOR_SRCBLEND(fd_blend_factor(util_blend_dst_alpha_to_one(rt->rgb_src_factor))) | 95 A2XX_RB_BLEND_CONTROL_COLOR_COMB_FCN(blend_func(rt->rgb_func)) | 96 A2XX_RB_BLEND_CONTROL_COLOR_DESTBLEND(fd_blend_factor(util_blend_dst_alpha_to_one(rt->rgb_dst_factor))); 97 98 if (rt->colormask & PIPE_MASK_R) 99 so->rb_colormask |= A2XX_RB_COLOR_MASK_WRITE_RED; 100 if (rt->colormask & PIPE_MASK_G) 101 so->rb_colormask |= A2XX_RB_COLOR_MASK_WRITE_GREEN; 102 if (rt->colormask & PIPE_MASK_B) 103 so->rb_colormask |= A2XX_RB_COLOR_MASK_WRITE_BLUE; 104 if (rt->colormask & PIPE_MASK_A) 105 so->rb_colormask |= A2XX_RB_COLOR_MASK_WRITE_ALPHA; 106 107 if (!rt->blend_enable) 108 so->rb_colorcontrol |= A2XX_RB_COLORCONTROL_BLEND_DISABLE; 109 110 if (cso->dither) 111 so->rb_colorcontrol |= A2XX_RB_COLORCONTROL_DITHER_MODE(DITHER_ALWAYS); 112 113 return so; 114 } 115
