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 if (vc4->dirty & (VC4_DIRTY_SCISSOR | VC4_DIRTY_VIEWPORT | 33 VC4_DIRTY_RASTERIZER)) { 34 float *vpscale = vc4->viewport.scale; 35 float *vptranslate = vc4->viewport.translate; 36 float vp_minx = -fabsf(vpscale[0]) + vptranslate[0]; 37 float vp_maxx = fabsf(vpscale[0]) + vptranslate[0]; 38 float vp_miny = -fabsf(vpscale[1]) + vptranslate[1]; 39 float vp_maxy = fabsf(vpscale[1]) + vptranslate[1]; 40 41 /* Clip to the scissor if it's enabled, but still clip to the 42 * drawable regardless since that controls where the binner 43 * tries to put things. 44 * 45 * Additionally, always clip the rendering to the viewport, 46 * since the hardware does guardband clipping, meaning 47 * primitives would rasterize outside of the view volume. 48 */ 49 uint32_t minx, miny, maxx, maxy; 50 if (!vc4->rasterizer->base.scissor) { 51 minx = MAX2(vp_minx, 0); 52 miny = MAX2(vp_miny, 0); 53 maxx = MIN2(vp_maxx, job->draw_width); 54 maxy = MIN2(vp_maxy, job->draw_height); 55 } else { 56 minx = MAX2(vp_minx, vc4->scissor.minx); 57 miny = MAX2(vp_miny, vc4->scissor.miny); 58 maxx = MIN2(vp_maxx, vc4->scissor.maxx); 59 maxy = MIN2(vp_maxy, vc4->scissor.maxy); 60 } 61 62 cl_emit(&job->bcl, CLIP_WINDOW, clip) { 63 clip.clip_window_left_pixel_coordinate = minx; 64 clip.clip_window_bottom_pixel_coordinate = miny; 65 clip.clip_window_height_in_pixels = maxy - miny; 66 clip.clip_window_width_in_pixels = maxx - minx; 67 } 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 struct vc4_cl_out *bcl = cl_start(&job->bcl); 82 /* HW-2905: If the RCL ends up doing a full-res load when 83 * multisampling, then early Z tracking may end up with values 84 * from the previous tile due to a HW bug. Disable it to 85 * avoid that. 86 * 87 * We should be able to skip this when the Z is cleared, but I 88 * was seeing bad rendering on glxgears -samples 4 even in 89 * that case. 90 */ 91 if (job->msaa || vc4->prog.fs->disable_early_z) 92 ez_enable_mask_out &= ~VC4_CONFIG_BITS_EARLY_Z; 93 94 /* Don't set the rasterizer to oversample if we're doing our 95 * binning and load/stores in single-sample mode. This is for 96 * the samples == 1 case, where vc4 doesn't do any 97 * multisampling behavior. 98 */ 99 if (!job->msaa) { 100 rasosm_mask_out &= 101 ~VC4_CONFIG_BITS_RASTERIZER_OVERSAMPLE_4X; 102 } 103 104 cl_u8(&bcl, VC4_PACKET_CONFIGURATION_BITS); 105 cl_u8(&bcl, 106 (vc4->rasterizer->config_bits[0] | 107 vc4->zsa->config_bits[0]) & rasosm_mask_out); 108 cl_u8(&bcl, 109 vc4->rasterizer->config_bits[1] | 110 vc4->zsa->config_bits[1]); 111 cl_u8(&bcl, 112 (vc4->rasterizer->config_bits[2] | 113 vc4->zsa->config_bits[2]) & ez_enable_mask_out); 114 cl_end(&job->bcl, bcl); 115 } 116 117 if (vc4->dirty & VC4_DIRTY_RASTERIZER) { 118 cl_emit_prepacked(&job->bcl, &vc4->rasterizer->packed); 119 } 120 121 if (vc4->dirty & VC4_DIRTY_VIEWPORT) { 122 cl_emit(&job->bcl, CLIPPER_XY_SCALING, clip) { 123 clip.viewport_half_width_in_1_16th_of_pixel = 124 vc4->viewport.scale[0] * 16.0f; 125 clip.viewport_half_height_in_1_16th_of_pixel = 126 vc4->viewport.scale[1] * 16.0f; 127 } 128 129 cl_emit(&job->bcl, CLIPPER_Z_SCALE_AND_OFFSET, clip) { 130 clip.viewport_z_offset_zc_to_zs = 131 vc4->viewport.translate[2]; 132 clip.viewport_z_scale_zc_to_zs = 133 vc4->viewport.scale[2]; 134 } 135 136 cl_emit(&job->bcl, VIEWPORT_OFFSET, vp) { 137 vp.viewport_centre_x_coordinate = 138 vc4->viewport.translate[0]; 139 vp.viewport_centre_y_coordinate = 140 vc4->viewport.translate[1]; 141 } 142 } 143 144 if (vc4->dirty & VC4_DIRTY_FLAT_SHADE_FLAGS) { 145 cl_emit(&job->bcl, FLAT_SHADE_FLAGS, flags) { 146 if (vc4->rasterizer->base.flatshade) 147 flags.flat_shading_flags = 148 vc4->prog.fs->color_inputs; 149 } 150 } 151 } 152
