mesa/src/asahi/lib/agx_tilebuffer.h

123 lines
3.3 KiB
C

/*
* Copyright 2022 Alyssa Rosenzweig
* SPDX-License-Identifier: MIT
*/
#pragma once
#include <assert.h>
#include <stdbool.h>
#include <stdint.h>
#include "util/format/u_formats.h"
#include "agx_pack.h"
#ifdef __cplusplus
extern "C" {
#endif
/* Maximum render targets per framebuffer. This is NOT architectural, but it
* is the ~universal API limit so there's no point in allowing more.
*/
#define AGX_MAX_RENDER_TARGETS (8)
/* Forward declarations to keep the header lean */
struct nir_shader;
struct nir_def;
struct nir_builder;
struct agx_tile_size {
uint8_t width;
uint8_t height;
};
struct agx_tilebuffer_layout {
/* Logical format of each render target. Use agx_tilebuffer_physical_format
* to get the physical format.
*/
enum pipe_format logical_format[AGX_MAX_RENDER_TARGETS];
/* Which render targets are spilled. */
bool spilled[AGX_MAX_RENDER_TARGETS];
/* Offset into the sample of each render target. If a render target is
* spilled, its offset is UNDEFINED. Use agx_tilebuffer_offset_B to access.
*/
uint8_t _offset_B[AGX_MAX_RENDER_TARGETS];
/* Total bytes per sample, rounded up as needed. Spilled render targets do
* not count against this.
*/
uint8_t sample_size_B;
/* Number of samples per pixel */
uint8_t nr_samples;
/* If layered rendering is used */
bool layered;
/* Selected tile size */
struct agx_tile_size tile_size;
/* USC word corresponding to this configuration of the tilebuffer */
struct agx_usc_shared_packed usc;
};
/*
* _offset_B is undefined for non-spilled render targets. This safe accessor
* asserts that render targets are not spilled rather than returning garbage.
*/
static inline uint8_t
agx_tilebuffer_offset_B(struct agx_tilebuffer_layout *layout, unsigned rt)
{
assert(rt < AGX_MAX_RENDER_TARGETS);
assert(!layout->spilled[rt] && "precondition");
return layout->_offset_B[rt];
}
static inline bool
agx_tilebuffer_spills(struct agx_tilebuffer_layout *layout)
{
for (unsigned rt = 0; rt < AGX_MAX_RENDER_TARGETS; ++rt) {
if (layout->spilled[rt])
return true;
}
return false;
}
struct agx_tilebuffer_layout
agx_build_tilebuffer_layout(const enum pipe_format *formats, uint8_t nr_cbufs,
uint8_t nr_samples, bool layered);
bool agx_nir_lower_tilebuffer(struct nir_shader *shader,
struct agx_tilebuffer_layout *tib,
uint8_t *colormasks, unsigned *bindless_base,
bool *translucent);
bool agx_nir_lower_to_per_sample(struct nir_shader *shader);
bool agx_nir_lower_monolithic_msaa(struct nir_shader *shader,
uint8_t nr_samples);
bool agx_nir_lower_sample_intrinsics(struct nir_shader *shader);
bool agx_nir_lower_alpha_to_coverage(struct nir_shader *shader,
uint8_t nr_samples);
bool agx_nir_lower_alpha_to_one(struct nir_shader *shader);
uint32_t agx_tilebuffer_total_size(struct agx_tilebuffer_layout *tib);
enum pipe_format
agx_tilebuffer_physical_format(struct agx_tilebuffer_layout *tib, unsigned rt);
bool agx_tilebuffer_supports_mask(struct agx_tilebuffer_layout *tib,
unsigned rt);
void agx_tilebuffer_pack_usc(struct agx_tilebuffer_layout *tib);
#ifdef __cplusplus
} /* extern C */
#endif