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/*
* 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 = MIN2(vp_maxx, job->draw_width);
maxy = MIN2(vp_maxy, job->draw_height);
} else {
minx = MAX2(vp_minx, vc4->scissor.minx);
miny = MAX2(vp_miny, vc4->scissor.miny);
maxx = MIN2(vp_maxx, vc4->scissor.maxx);
maxy = MIN2(vp_maxy, vc4->scissor.maxy);
}
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;
}
}
}
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