| /* |
| * Copyright © 2014 Broadcom |
| * |
| * Permission is hereby granted, free of charge, to any person obtaining a |
| * copy of this software and associated documentation files (the "Software"), |
| * to deal in the Software without restriction, including without limitation |
| * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
| * and/or sell copies of the Software, and to permit persons to whom the |
| * Software is furnished to do so, subject to the following conditions: |
| * |
| * The above copyright notice and this permission notice (including the next |
| * paragraph) shall be included in all copies or substantial portions of the |
| * Software. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING |
| * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS |
| * IN THE SOFTWARE. |
| */ |
| |
| #include "vc4_context.h" |
| |
| void |
| vc4_emit_state(struct pipe_context *pctx) |
| { |
| struct vc4_context *vc4 = vc4_context(pctx); |
| struct vc4_job *job = vc4->job; |
| |
| if (vc4->dirty & (VC4_DIRTY_SCISSOR | VC4_DIRTY_VIEWPORT | |
| VC4_DIRTY_RASTERIZER)) { |
| float *vpscale = vc4->viewport.scale; |
| float *vptranslate = vc4->viewport.translate; |
| float vp_minx = -fabsf(vpscale[0]) + vptranslate[0]; |
| float vp_maxx = fabsf(vpscale[0]) + vptranslate[0]; |
| float vp_miny = -fabsf(vpscale[1]) + vptranslate[1]; |
| float vp_maxy = fabsf(vpscale[1]) + vptranslate[1]; |
| |
| /* Clip to the scissor if it's enabled, but still clip to the |
| * drawable regardless since that controls where the binner |
| * tries to put things. |
| * |
| * Additionally, always clip the rendering to the viewport, |
| * since the hardware does guardband clipping, meaning |
| * primitives would rasterize outside of the view volume. |
| */ |
| uint32_t minx, miny, maxx, maxy; |
| if (!vc4->rasterizer->base.scissor) { |
| minx = MAX2(vp_minx, 0); |
| miny = MAX2(vp_miny, 0); |
| maxx = MAX2(MIN2(vp_maxx, job->draw_width), minx); |
| maxy = MAX2(MIN2(vp_maxy, job->draw_height), miny); |
| } else { |
| minx = MAX2(vp_minx, vc4->scissor.minx); |
| miny = MAX2(vp_miny, vc4->scissor.miny); |
| maxx = MAX2(MIN2(vp_maxx, vc4->scissor.maxx), minx); |
| maxy = MAX2(MIN2(vp_maxy, vc4->scissor.maxy), miny); |
| } |
| |
| cl_emit(&job->bcl, CLIP_WINDOW, clip) { |
| clip.clip_window_left_pixel_coordinate = minx; |
| clip.clip_window_bottom_pixel_coordinate = miny; |
| clip.clip_window_height_in_pixels = maxy - miny; |
| clip.clip_window_width_in_pixels = maxx - minx; |
| } |
| |
| job->draw_min_x = MIN2(job->draw_min_x, minx); |
| job->draw_min_y = MIN2(job->draw_min_y, miny); |
| job->draw_max_x = MAX2(job->draw_max_x, maxx); |
| job->draw_max_y = MAX2(job->draw_max_y, maxy); |
| } |
| |
| if (vc4->dirty & (VC4_DIRTY_RASTERIZER | |
| VC4_DIRTY_ZSA | |
| VC4_DIRTY_COMPILED_FS)) { |
| uint8_t ez_enable_mask_out = ~0; |
| uint8_t rasosm_mask_out = ~0; |
| |
| struct vc4_cl_out *bcl = cl_start(&job->bcl); |
| /* HW-2905: If the RCL ends up doing a full-res load when |
| * multisampling, then early Z tracking may end up with values |
| * from the previous tile due to a HW bug. Disable it to |
| * avoid that. |
| * |
| * We should be able to skip this when the Z is cleared, but I |
| * was seeing bad rendering on glxgears -samples 4 even in |
| * that case. |
| */ |
| if (job->msaa || vc4->prog.fs->disable_early_z) |
| ez_enable_mask_out &= ~VC4_CONFIG_BITS_EARLY_Z; |
| |
| /* Don't set the rasterizer to oversample if we're doing our |
| * binning and load/stores in single-sample mode. This is for |
| * the samples == 1 case, where vc4 doesn't do any |
| * multisampling behavior. |
| */ |
| if (!job->msaa) { |
| rasosm_mask_out &= |
| ~VC4_CONFIG_BITS_RASTERIZER_OVERSAMPLE_4X; |
| } |
| |
| cl_u8(&bcl, VC4_PACKET_CONFIGURATION_BITS); |
| cl_u8(&bcl, |
| (vc4->rasterizer->config_bits[0] | |
| vc4->zsa->config_bits[0]) & rasosm_mask_out); |
| cl_u8(&bcl, |
| vc4->rasterizer->config_bits[1] | |
| vc4->zsa->config_bits[1]); |
| cl_u8(&bcl, |
| (vc4->rasterizer->config_bits[2] | |
| vc4->zsa->config_bits[2]) & ez_enable_mask_out); |
| cl_end(&job->bcl, bcl); |
| } |
| |
| if (vc4->dirty & VC4_DIRTY_RASTERIZER) { |
| cl_emit_prepacked(&job->bcl, &vc4->rasterizer->packed); |
| } |
| |
| if (vc4->dirty & VC4_DIRTY_VIEWPORT) { |
| cl_emit(&job->bcl, CLIPPER_XY_SCALING, clip) { |
| clip.viewport_half_width_in_1_16th_of_pixel = |
| vc4->viewport.scale[0] * 16.0f; |
| clip.viewport_half_height_in_1_16th_of_pixel = |
| vc4->viewport.scale[1] * 16.0f; |
| } |
| |
| cl_emit(&job->bcl, CLIPPER_Z_SCALE_AND_OFFSET, clip) { |
| clip.viewport_z_offset_zc_to_zs = |
| vc4->viewport.translate[2]; |
| clip.viewport_z_scale_zc_to_zs = |
| vc4->viewport.scale[2]; |
| } |
| |
| cl_emit(&job->bcl, VIEWPORT_OFFSET, vp) { |
| vp.viewport_centre_x_coordinate = |
| vc4->viewport.translate[0]; |
| vp.viewport_centre_y_coordinate = |
| vc4->viewport.translate[1]; |
| } |
| } |
| |
| if (vc4->dirty & VC4_DIRTY_FLAT_SHADE_FLAGS) { |
| cl_emit(&job->bcl, FLAT_SHADE_FLAGS, flags) { |
| if (vc4->rasterizer->base.flatshade) |
| flags.flat_shading_flags = |
| vc4->prog.fs->color_inputs; |
| } |
| } |
| } |
