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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_cl_out *bcl = cl_start(&vc4->bcl);
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, vc4->draw_width);
maxy = MIN2(vp_maxy, vc4->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_u8(&bcl, VC4_PACKET_CLIP_WINDOW);
cl_u16(&bcl, minx);
cl_u16(&bcl, miny);
cl_u16(&bcl, maxx - minx);
cl_u16(&bcl, maxy - miny);
vc4->draw_min_x = MIN2(vc4->draw_min_x, minx);
vc4->draw_min_y = MIN2(vc4->draw_min_y, miny);
vc4->draw_max_x = MAX2(vc4->draw_max_x, maxx);
vc4->draw_max_y = MAX2(vc4->draw_max_y, maxy);
}
if (vc4->dirty & (VC4_DIRTY_RASTERIZER |
VC4_DIRTY_ZSA |
VC4_DIRTY_COMPILED_FS)) {
uint8_t ez_enable_mask_out = ~0;
/* 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 (vc4->msaa || vc4->prog.fs->disable_early_z)
ez_enable_mask_out &= ~VC4_CONFIG_BITS_EARLY_Z;
cl_u8(&bcl, VC4_PACKET_CONFIGURATION_BITS);
cl_u8(&bcl,
vc4->rasterizer->config_bits[0] |
vc4->zsa->config_bits[0]);
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);
}
if (vc4->dirty & VC4_DIRTY_RASTERIZER) {
cl_u8(&bcl, VC4_PACKET_DEPTH_OFFSET);
cl_u16(&bcl, vc4->rasterizer->offset_factor);
cl_u16(&bcl, vc4->rasterizer->offset_units);
cl_u8(&bcl, VC4_PACKET_POINT_SIZE);
cl_f(&bcl, vc4->rasterizer->point_size);
cl_u8(&bcl, VC4_PACKET_LINE_WIDTH);
cl_f(&bcl, vc4->rasterizer->base.line_width);
}
if (vc4->dirty & VC4_DIRTY_VIEWPORT) {
cl_u8(&bcl, VC4_PACKET_CLIPPER_XY_SCALING);
cl_f(&bcl, vc4->viewport.scale[0] * 16.0f);
cl_f(&bcl, vc4->viewport.scale[1] * 16.0f);
cl_u8(&bcl, VC4_PACKET_CLIPPER_Z_SCALING);
cl_f(&bcl, vc4->viewport.translate[2]);
cl_f(&bcl, vc4->viewport.scale[2]);
cl_u8(&bcl, VC4_PACKET_VIEWPORT_OFFSET);
cl_u16(&bcl, 16 * vc4->viewport.translate[0]);
cl_u16(&bcl, 16 * vc4->viewport.translate[1]);
}
if (vc4->dirty & VC4_DIRTY_FLAT_SHADE_FLAGS) {
cl_u8(&bcl, VC4_PACKET_FLAT_SHADE_FLAGS);
cl_u32(&bcl, vc4->rasterizer->base.flatshade ?
vc4->prog.fs->color_inputs : 0);
}
cl_end(&vc4->bcl, bcl);
}
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