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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.
*/
#ifndef VC4_QIR_H
#define VC4_QIR_H
#include <stdbool.h>
#include <stdint.h>
#include "util/u_simple_list.h"
enum qfile {
QFILE_NULL,
QFILE_TEMP,
QFILE_VARY,
QFILE_UNIF,
};
struct qreg {
enum qfile file;
uint32_t index;
};
enum qop {
QOP_UNDEF,
QOP_MOV,
QOP_FADD,
QOP_FSUB,
QOP_FMUL,
QOP_FMIN,
QOP_FMAX,
QOP_FMINABS,
QOP_FMAXABS,
QOP_SEQ,
QOP_SNE,
QOP_SGE,
QOP_SLT,
QOP_CMP,
QOP_FTOI,
QOP_RCP,
QOP_RSQ,
QOP_EXP2,
QOP_LOG2,
QOP_VW_SETUP,
QOP_VR_SETUP,
QOP_PACK_SCALED,
QOP_PACK_COLORS,
QOP_VPM_WRITE,
QOP_VPM_READ,
QOP_TLB_COLOR_WRITE,
QOP_VARY_ADD_C,
};
struct simple_node {
struct simple_node *next;
struct simple_node *prev;
};
struct qinst {
struct simple_node link;
enum qop op;
struct qreg dst;
struct qreg *src;
};
enum qstage {
/**
* Coordinate shader, runs during binning, before the VS, and just
* outputs position.
*/
QSTAGE_COORD,
QSTAGE_VERT,
QSTAGE_FRAG,
};
enum quniform_contents {
/**
* Indicates that a constant 32-bit value is copied from the program's
* uniform contents.
*/
QUNIFORM_CONSTANT,
/**
* Indicates that the program's uniform contents are used as an index
* into the GL uniform storage.
*/
QUNIFORM_UNIFORM,
/** @{
* Scaling factors from clip coordinates to relative to the viewport
* center.
*
* This is used by the coordinate and vertex shaders to produce the
* 32-bit entry consisting of 2 16-bit fields with 12.4 signed fixed
* point offsets from the viewport ccenter.
*/
QUNIFORM_VIEWPORT_X_SCALE,
QUNIFORM_VIEWPORT_Y_SCALE,
/** @} */
};
struct qcompile {
struct qreg undef;
enum qstage stage;
uint32_t num_temps;
struct simple_node instructions;
uint32_t immediates[1024];
struct simple_node qpu_inst_list;
uint64_t *qpu_insts;
uint32_t qpu_inst_count;
uint32_t qpu_inst_size;
};
struct qcompile *qir_compile_init(void);
void qir_compile_destroy(struct qcompile *c);
struct qinst *qir_inst(enum qop op, struct qreg dst,
struct qreg src0, struct qreg src1);
struct qinst *qir_inst4(enum qop op, struct qreg dst,
struct qreg a,
struct qreg b,
struct qreg c,
struct qreg d);
void qir_emit(struct qcompile *c, struct qinst *inst);
struct qreg qir_get_temp(struct qcompile *c);
int qir_get_op_nsrc(enum qop qop);
bool qir_reg_equals(struct qreg a, struct qreg b);
bool qir_has_side_effects(struct qinst *inst);
void qir_dump(struct qcompile *c);
void qir_dump_inst(struct qinst *inst);
const char *qir_get_stage_name(enum qstage stage);
void qir_optimize(struct qcompile *c);
bool qir_opt_algebraic(struct qcompile *c);
bool qir_opt_copy_propagation(struct qcompile *c);
bool qir_opt_dead_code(struct qcompile *c);
#define QIR_ALU1(name) \
static inline struct qreg \
qir_##name(struct qcompile *c, struct qreg a) \
{ \
struct qreg t = qir_get_temp(c); \
qir_emit(c, qir_inst(QOP_##name, t, a, c->undef)); \
return t; \
}
#define QIR_ALU2(name) \
static inline struct qreg \
qir_##name(struct qcompile *c, struct qreg a, struct qreg b) \
{ \
struct qreg t = qir_get_temp(c); \
qir_emit(c, qir_inst(QOP_##name, t, a, b)); \
return t; \
}
QIR_ALU1(MOV)
QIR_ALU2(FADD)
QIR_ALU2(FSUB)
QIR_ALU2(FMUL)
QIR_ALU2(FMIN)
QIR_ALU2(FMAX)
QIR_ALU2(FMINABS)
QIR_ALU2(FMAXABS)
QIR_ALU1(FTOI)
QIR_ALU1(RCP)
QIR_ALU1(RSQ)
QIR_ALU1(EXP2)
QIR_ALU1(LOG2)
QIR_ALU2(PACK_SCALED)
QIR_ALU1(VARY_ADD_C)
static inline void
qir_VPM_WRITE(struct qcompile *c, struct qreg a)
{
qir_emit(c, qir_inst(QOP_VPM_WRITE, c->undef, a, c->undef));
}
#endif /* VC4_QIR_H */
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