1 /* 2 * Copyright 2014 Broadcom 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 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 8 * and/or sell copies of the Software, and to permit persons to whom the 9 * 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 NONINFRINGEMENT. IN NO EVENT SHALL 18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING 20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS 21 * IN THE SOFTWARE. 22 */ 23 24 #include "vc4_context.h" 25 26 void 27 vc4_emit_state(struct pipe_context *pctx) 28 { 29 struct vc4_context *vc4 = vc4_context(pctx); 30 struct vc4_job *job = vc4->job; 31 32 struct vc4_cl_out *bcl = cl_start(&job->bcl); 33 if (vc4->dirty & (VC4_DIRTY_SCISSOR | VC4_DIRTY_VIEWPORT | 34 VC4_DIRTY_RASTERIZER)) { 35 float *vpscale = vc4->viewport.scale; 36 float *vptranslate = vc4->viewport.translate; 37 float vp_minx = -fabsf(vpscale[0]) + vptranslate[0]; 38 float vp_maxx = fabsf(vpscale[0]) + vptranslate[0]; 39 float vp_miny = -fabsf(vpscale[1]) + vptranslate[1]; 40 float vp_maxy = fabsf(vpscale[1]) + vptranslate[1]; 41 42 /* Clip to the scissor if it's enabled, but still clip to the 43 * drawable regardless since that controls where the binner 44 * tries to put things. 45 * 46 * Additionally, always clip the rendering to the viewport, 47 * since the hardware does guardband clipping, meaning 48 * primitives would rasterize outside of the view volume. 49 */ 50 uint32_t minx, miny, maxx, maxy; 51 if (!vc4->rasterizer->base.scissor) { 52 minx = MAX2(vp_minx, 0); 53 miny = MAX2(vp_miny, 0); 54 maxx = MIN2(vp_maxx, job->draw_width); 55 maxy = MIN2(vp_maxy, job->draw_height); 56 } else { 57 minx = MAX2(vp_minx, vc4->scissor.minx); 58 miny = MAX2(vp_miny, vc4->scissor.miny); 59 maxx = MIN2(vp_maxx, vc4->scissor.maxx); 60 maxy = MIN2(vp_maxy, vc4->scissor.maxy); 61 } 62 63 cl_u8(&bcl, VC4_PACKET_CLIP_WINDOW); 64 cl_u16(&bcl, minx); 65 cl_u16(&bcl, miny); 66 cl_u16(&bcl, maxx - minx); 67 cl_u16(&bcl, maxy - miny); 68 69 job->draw_min_x = MIN2(job->draw_min_x, minx); 70 job->draw_min_y = MIN2(job->draw_min_y, miny); 71 job->draw_max_x = MAX2(job->draw_max_x, maxx); 72 job->draw_max_y = MAX2(job->draw_max_y, maxy); 73 } 74 75 if (vc4->dirty & (VC4_DIRTY_RASTERIZER | 76 VC4_DIRTY_ZSA | 77 VC4_DIRTY_COMPILED_FS)) { 78 uint8_t ez_enable_mask_out = ~0; 79 uint8_t rasosm_mask_out = ~0; 80 81 /* HW-2905: If the RCL ends up doing a full-res load when 82 * multisampling, then early Z tracking may end up with values 83 * from the previous tile due to a HW bug. Disable it to 84 * avoid that. 85 * 86 * We should be able to skip this when the Z is cleared, but I 87 * was seeing bad rendering on glxgears -samples 4 even in 88 * that case. 89 */ 90 if (job->msaa || vc4->prog.fs->disable_early_z) 91 ez_enable_mask_out &= ~VC4_CONFIG_BITS_EARLY_Z; 92 93 /* Don't set the rasterizer to oversample if we're doing our 94 * binning and load/stores in single-sample mode. This is for 95 * the samples == 1 case, where vc4 doesn't do any 96 * multisampling behavior. 97 */ 98 if (!job->msaa) { 99 rasosm_mask_out &= 100 ~VC4_CONFIG_BITS_RASTERIZER_OVERSAMPLE_4X; 101 } 102 103 cl_u8(&bcl, VC4_PACKET_CONFIGURATION_BITS); 104 cl_u8(&bcl, 105 (vc4->rasterizer->config_bits[0] | 106 vc4->zsa->config_bits[0]) & rasosm_mask_out); 107 cl_u8(&bcl, 108 vc4->rasterizer->config_bits[1] | 109 vc4->zsa->config_bits[1]); 110 cl_u8(&bcl, 111 (vc4->rasterizer->config_bits[2] | 112 vc4->zsa->config_bits[2]) & ez_enable_mask_out); 113 } 114 115 if (vc4->dirty & VC4_DIRTY_RASTERIZER) { 116 cl_u8(&bcl, VC4_PACKET_DEPTH_OFFSET); 117 cl_u16(&bcl, vc4->rasterizer->offset_factor); 118 cl_u16(&bcl, vc4->rasterizer->offset_units); 119 120 cl_u8(&bcl, VC4_PACKET_POINT_SIZE); 121 cl_f(&bcl, vc4->rasterizer->point_size); 122 123 cl_u8(&bcl, VC4_PACKET_LINE_WIDTH); 124 cl_f(&bcl, vc4->rasterizer->base.line_width); 125 } 126 127 if (vc4->dirty & VC4_DIRTY_VIEWPORT) { 128 cl_u8(&bcl, VC4_PACKET_CLIPPER_XY_SCALING); 129 cl_f(&bcl, vc4->viewport.scale[0] * 16.0f); 130 cl_f(&bcl, vc4->viewport.scale[1] * 16.0f); 131 132 cl_u8(&bcl, VC4_PACKET_CLIPPER_Z_SCALING); 133 cl_f(&bcl, vc4->viewport.translate[2]); 134 cl_f(&bcl, vc4->viewport.scale[2]); 135 136 cl_u8(&bcl, VC4_PACKET_VIEWPORT_OFFSET); 137 cl_u16(&bcl, 16 * vc4->viewport.translate[0]); 138 cl_u16(&bcl, 16 * vc4->viewport.translate[1]); 139 } 140 141 if (vc4->dirty & VC4_DIRTY_FLAT_SHADE_FLAGS) { 142 cl_u8(&bcl, VC4_PACKET_FLAT_SHADE_FLAGS); 143 cl_u32(&bcl, vc4->rasterizer->base.flatshade ? 144 vc4->prog.fs->color_inputs : 0); 145 } 146 147 cl_end(&job->bcl, bcl); 148 } 149
