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