vc4_program.c 36.8 KB
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/*
 * Copyright (c) 2014 Scott Mansell
 * 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 <stdio.h>
#include <inttypes.h>
#include "pipe/p_state.h"
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#include "util/u_format.h"
#include "util/u_hash_table.h"
#include "util/u_hash.h"
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#include "util/u_memory.h"
#include "tgsi/tgsi_parse.h"
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#include "tgsi/tgsi_dump.h"
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#include "vc4_context.h"
#include "vc4_qpu.h"
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#include "vc4_qir.h"

struct tgsi_to_qir {
        struct tgsi_parse_context parser;
        struct qcompile *c;
        struct qreg *temps;
        struct qreg *inputs;
        struct qreg *outputs;
        struct qreg *uniforms;
        struct qreg *consts;
        uint32_t num_consts;

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        struct vc4_shader_state *shader_state;
        struct vc4_fs_key *fs_key;
        struct vc4_vs_key *vs_key;

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        uint32_t *uniform_data;
        enum quniform_contents *uniform_contents;
        uint32_t num_uniforms;
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        uint32_t num_outputs;
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};

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struct vc4_key {
        struct vc4_shader_state *shader_state;
};

struct vc4_fs_key {
        struct vc4_key base;
        enum pipe_format color_format;
};

struct vc4_vs_key {
        struct vc4_key base;
        enum pipe_format attr_formats[8];
};

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static struct qreg
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add_uniform(struct tgsi_to_qir *trans,
            enum quniform_contents contents,
            uint32_t data)
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{
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        uint32_t uniform = trans->num_uniforms++;
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        struct qreg u = { QFILE_UNIF, uniform };

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        trans->uniform_contents[uniform] = contents;
        trans->uniform_data[uniform] = data;

        return u;
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}

static struct qreg
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get_temp_for_uniform(struct tgsi_to_qir *trans, enum quniform_contents contents,
                     uint32_t data)
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{
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        struct qcompile *c = trans->c;

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        for (int i = 0; i < trans->num_uniforms; i++) {
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                if (trans->uniform_contents[i] == contents &&
                    trans->uniform_data[i] == data)
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                        return trans->uniforms[i];
        }

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        struct qreg u = add_uniform(trans, contents, data);
        struct qreg t = qir_MOV(c, u);

        trans->uniforms[u.index] = t;
        return t;
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}

static struct qreg
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qir_uniform_ui(struct tgsi_to_qir *trans, uint32_t ui)
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{
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        return get_temp_for_uniform(trans, QUNIFORM_CONSTANT, ui);
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}

static struct qreg
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qir_uniform_f(struct tgsi_to_qir *trans, float f)
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{
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        return qir_uniform_ui(trans, fui(f));
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}

static struct qreg
get_src(struct tgsi_to_qir *trans, struct tgsi_src_register *src, int i)
{
        struct qcompile *c = trans->c;
        struct qreg r = c->undef;

        uint32_t s = i;
        switch (i) {
        case TGSI_SWIZZLE_X:
                s = src->SwizzleX;
                break;
        case TGSI_SWIZZLE_Y:
                s = src->SwizzleY;
                break;
        case TGSI_SWIZZLE_Z:
                s = src->SwizzleZ;
                break;
        case TGSI_SWIZZLE_W:
                s = src->SwizzleW;
                break;
        default:
                abort();
        }

        assert(!src->Indirect);

        switch (src->File) {
        case TGSI_FILE_NULL:
                return r;
        case TGSI_FILE_TEMPORARY:
                r = trans->temps[src->Index * 4 + s];
                break;
        case TGSI_FILE_IMMEDIATE:
                r = trans->consts[src->Index * 4 + s];
                break;
        case TGSI_FILE_CONSTANT:
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                r = get_temp_for_uniform(trans, QUNIFORM_UNIFORM,
                                         src->Index * 4 + s);
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                break;
        case TGSI_FILE_INPUT:
                r = trans->inputs[src->Index * 4 + s];
                break;
        default:
                fprintf(stderr, "unknown src file %d\n", src->File);
                abort();
        }

        if (src->Absolute)
                r = qir_FMAXABS(c, r, r);

        if (src->Negate)
                r = qir_FSUB(c, qir_uniform_f(trans, 0), r);

        return r;
};

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static void
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update_dst(struct tgsi_to_qir *trans, struct tgsi_full_instruction *tgsi_inst,
           int i, struct qreg val)
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{
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        struct tgsi_dst_register *tgsi_dst = &tgsi_inst->Dst[0].Register;

        assert(!tgsi_dst->Indirect);

        switch (tgsi_dst->File) {
        case TGSI_FILE_TEMPORARY:
                trans->temps[tgsi_dst->Index * 4 + i] = val;
                break;
        case TGSI_FILE_OUTPUT:
                trans->outputs[tgsi_dst->Index * 4 + i] = val;
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                trans->num_outputs = MAX2(trans->num_outputs,
                                          tgsi_dst->Index * 4 + i + 1);
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                break;
        default:
                fprintf(stderr, "unknown dst file %d\n", tgsi_dst->File);
                abort();
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        }
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};

static struct qreg
tgsi_to_qir_alu(struct tgsi_to_qir *trans,
                struct tgsi_full_instruction *tgsi_inst,
                enum qop op, struct qreg *src, int i)
{
        struct qcompile *c = trans->c;
        struct qreg dst = qir_get_temp(c);
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        qir_emit(c, qir_inst4(op, dst,
                              src[0 * 4 + i],
                              src[1 * 4 + i],
                              src[2 * 4 + i],
                              c->undef));
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        return dst;
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}

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static struct qreg
tgsi_to_qir_mad(struct tgsi_to_qir *trans,
                struct tgsi_full_instruction *tgsi_inst,
                enum qop op, struct qreg *src, int i)
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{
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        struct qcompile *c = trans->c;
        return qir_FADD(c,
                        qir_FMUL(c,
                                 src[0 * 4 + i],
                                 src[1 * 4 + i]),
                        src[2 * 4 + i]);
}
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static struct qreg
tgsi_to_qir_lit(struct tgsi_to_qir *trans,
                 struct tgsi_full_instruction *tgsi_inst,
                 enum qop op, struct qreg *src, int i)
{
        struct qcompile *c = trans->c;
        struct qreg x = src[0 * 4 + 0];
        struct qreg y = src[0 * 4 + 1];
        struct qreg w = src[0 * 4 + 3];

        switch (i) {
        case 0:
        case 3:
                return qir_uniform_f(trans, 1.0);
        case 1:
                return qir_FMAX(c, src[0 * 4 + 0], qir_uniform_f(trans, 0.0));
        case 2: {
                struct qreg zero = qir_uniform_f(trans, 0.0);

                /* XXX: Clamp w to -128..128 */
                return qir_CMP(c,
                               x,
                               zero,
                               qir_EXP2(c, qir_FMUL(c,
                                                    w,
                                                    qir_LOG2(c,
                                                             qir_FMAX(c,
                                                                      y,
                                                                      zero)))));
        }
        default:
                assert(!"not reached");
                return c->undef;
        }
}

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static struct qreg
tgsi_to_qir_lrp(struct tgsi_to_qir *trans,
                 struct tgsi_full_instruction *tgsi_inst,
                 enum qop op, struct qreg *src, int i)
{
        struct qcompile *c = trans->c;
        struct qreg src0 = src[0 * 4 + i];
        struct qreg src1 = src[1 * 4 + i];
        struct qreg src2 = src[2 * 4 + i];

        /* LRP is:
         *    src0 * src1 + (1 - src0) * src2.
         * -> src0 * src1 + src2 - src0 * src2
         * -> src2 + src0 * (src1 - src2)
         */
        return qir_FADD(c, src2, qir_FMUL(c, src0, qir_FSUB(c, src1, src2)));

}

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static struct qreg
tgsi_to_qir_pow(struct tgsi_to_qir *trans,
                struct tgsi_full_instruction *tgsi_inst,
                enum qop op, struct qreg *src, int i)
{
        struct qcompile *c = trans->c;

        /* Note that this instruction replicates its result from the x channel
         */
        return qir_EXP2(c, qir_FMUL(c,
                                    src[1 * 4 + 0],
                                    qir_LOG2(c, src[0 * 4 + 0])));
}

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static struct qreg
tgsi_to_qir_trunc(struct tgsi_to_qir *trans,
                struct tgsi_full_instruction *tgsi_inst,
                enum qop op, struct qreg *src, int i)
{
        struct qcompile *c = trans->c;
        return qir_ITOF(c, qir_FTOI(c, src[0 * 4 + i]));
}

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/**
 * Computes x - floor(x), which is tricky because our FTOI truncates (rounds
 * to zero).
 */
static struct qreg
tgsi_to_qir_frc(struct tgsi_to_qir *trans,
                struct tgsi_full_instruction *tgsi_inst,
                enum qop op, struct qreg *src, int i)
{
        struct qcompile *c = trans->c;
        struct qreg trunc = qir_ITOF(c, qir_FTOI(c, src[0 * 4 + i]));
        struct qreg diff = qir_FSUB(c, src[0 * 4 + i], trunc);
        return qir_CMP(c,
                       diff,
                       qir_FADD(c, diff, qir_uniform_f(trans, 1.0)),
                       diff);
}
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static struct qreg
tgsi_to_qir_dp(struct tgsi_to_qir *trans,
               struct tgsi_full_instruction *tgsi_inst,
               int num, struct qreg *src, int i)
{
        struct qcompile *c = trans->c;
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        struct qreg sum = qir_FMUL(c, src[0 * 4 + 0], src[1 * 4 + 0]);
        for (int j = 1; j < num; j++) {
                sum = qir_FADD(c, sum, qir_FMUL(c,
                                                src[0 * 4 + j],
                                                src[1 * 4 + j]));
        }
        return sum;
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}

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static struct qreg
tgsi_to_qir_dp2(struct tgsi_to_qir *trans,
                 struct tgsi_full_instruction *tgsi_inst,
                 enum qop op, struct qreg *src, int i)
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{
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        return tgsi_to_qir_dp(trans, tgsi_inst, 2, src, i);
}
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static struct qreg
tgsi_to_qir_dp3(struct tgsi_to_qir *trans,
                 struct tgsi_full_instruction *tgsi_inst,
                 enum qop op, struct qreg *src, int i)
{
        return tgsi_to_qir_dp(trans, tgsi_inst, 3, src, i);
}

static struct qreg
tgsi_to_qir_dp4(struct tgsi_to_qir *trans,
                 struct tgsi_full_instruction *tgsi_inst,
                 enum qop op, struct qreg *src, int i)
{
        return tgsi_to_qir_dp(trans, tgsi_inst, 4, src, i);
}

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static struct qreg
tgsi_to_qir_abs(struct tgsi_to_qir *trans,
                struct tgsi_full_instruction *tgsi_inst,
                enum qop op, struct qreg *src, int i)
{
        struct qcompile *c = trans->c;
        struct qreg arg = src[0 * 4 + i];
        return qir_FMAXABS(c, arg, arg);
}

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/* Note that this instruction replicates its result from the x channel */
static struct qreg
tgsi_to_qir_sin(struct tgsi_to_qir *trans,
                struct tgsi_full_instruction *tgsi_inst,
                enum qop op, struct qreg *src, int i)
{
        struct qcompile *c = trans->c;
        float coeff[] = {
                2.0 * M_PI,
                -pow(2.0 * M_PI, 3) / (3 * 2 * 1),
                pow(2.0 * M_PI, 5) / (5 * 4 * 3 * 2 * 1),
                -pow(2.0 * M_PI, 7) / (7 * 6 * 5 * 4 * 3 * 2 * 1),
        };

        struct qreg scaled_x =
                qir_FMUL(c,
                         src[0 * 4 + 0],
                         qir_uniform_f(trans, 1.0f / (M_PI * 2.0f)));


        struct qreg x = tgsi_to_qir_frc(trans, NULL, 0, &scaled_x, 0);
        struct qreg x2 = qir_FMUL(c, x, x);
        struct qreg sum = qir_FMUL(c, x, qir_uniform_f(trans, coeff[0]));
        for (int i = 1; i < ARRAY_SIZE(coeff); i++) {
                x = qir_FMUL(c, x, x2);
                sum = qir_FADD(c,
                               sum,
                               qir_FMUL(c,
                                        x,
                                        qir_uniform_f(trans, coeff[i])));
        }
        return sum;
}

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/* Note that this instruction replicates its result from the x channel */
static struct qreg
tgsi_to_qir_cos(struct tgsi_to_qir *trans,
                struct tgsi_full_instruction *tgsi_inst,
                enum qop op, struct qreg *src, int i)
{
        struct qcompile *c = trans->c;
        float coeff[] = {
                1.0f,
                -pow(2.0 * M_PI, 2) / (2 * 1),
                pow(2.0 * M_PI, 4) / (4 * 3 * 2 * 1),
                -pow(2.0 * M_PI, 6) / (6 * 5 * 4 * 3 * 2 * 1),
        };

        struct qreg scaled_x =
                qir_FMUL(c, src[0 * 4 + 0],
                         qir_uniform_f(trans, 1.0f / (M_PI * 2.0f)));
        struct qreg x_frac = tgsi_to_qir_frc(trans, NULL, 0, &scaled_x, 0);

        struct qreg sum = qir_uniform_f(trans, coeff[0]);
        struct qreg x2 = qir_FMUL(c, x_frac, x_frac);
        struct qreg x = x2; /* Current x^2, x^4, or x^6 */
        for (int i = 1; i < ARRAY_SIZE(coeff); i++) {
                if (i != 1)
                        x = qir_FMUL(c, x, x2);

                struct qreg mul = qir_FMUL(c,
                                           x,
                                           qir_uniform_f(trans, coeff[i]));
                if (i == 0)
                        sum = mul;
                else
                        sum = qir_FADD(c, sum, mul);
        }
        return sum;
}

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static void
emit_vertex_input(struct tgsi_to_qir *trans, int attr)
{
        enum pipe_format format = trans->vs_key->attr_formats[attr];
        struct qcompile *c = trans->c;
        struct qreg vpm_reads[4];

        /* Right now, we're setting the VPM offsets to be 16 bytes wide every
         * time, so we always read 4 32-bit VPM entries.
         */
        for (int i = 0; i < 4; i++) {
                vpm_reads[i] = qir_get_temp(c);
                qir_emit(c, qir_inst(QOP_VPM_READ,
                                     vpm_reads[i],
                                     c->undef,
                                     c->undef));
                c->num_inputs++;
        }

        bool format_warned = false;
        const struct util_format_description *desc =
                util_format_description(format);

        for (int i = 0; i < 4; i++) {
                uint8_t swiz = desc->swizzle[i];

                switch (swiz) {
                case UTIL_FORMAT_SWIZZLE_NONE:
                        if (!format_warned) {
                                fprintf(stderr,
                                        "vtx element %d NONE swizzle: %s\n",
                                        attr, util_format_name(format));
                                format_warned = true;
                        }
                        /* FALLTHROUGH */
                case UTIL_FORMAT_SWIZZLE_0:
                        trans->inputs[attr * 4 + i] = qir_uniform_ui(trans, 0);
                        break;
                case UTIL_FORMAT_SWIZZLE_1:
                        trans->inputs[attr * 4 + i] = qir_uniform_ui(trans,
                                                                     fui(1.0));
                        break;
                default:
                        if (!format_warned &&
                            (desc->channel[swiz].type != UTIL_FORMAT_TYPE_FLOAT ||
                             desc->channel[swiz].size != 32)) {
                                fprintf(stderr,
                                        "vtx element %d unsupported type: %s\n",
                                        attr, util_format_name(format));
                                format_warned = true;
                        }

                        trans->inputs[attr * 4 + i] = vpm_reads[swiz];
                        break;
                }
        }
}

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static void
emit_tgsi_declaration(struct tgsi_to_qir *trans,
                      struct tgsi_full_declaration *decl)
{
        struct qcompile *c = trans->c;

        switch (decl->Declaration.File) {
        case TGSI_FILE_INPUT:
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                if (c->stage == QSTAGE_FRAG) {
                        for (int i = decl->Range.First * 4;
                             i < (decl->Range.Last + 1) * 4;
                             i++) {
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                                struct qreg vary = {
                                        QFILE_VARY,
                                        i
                                };
                                trans->inputs[i] =
                                        qir_VARY_ADD_C(c, qir_MOV(c, vary));

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                                c->num_inputs++;
                        }
                } else {
                        for (int i = decl->Range.First;
                             i <= decl->Range.Last;
                             i++) {
                                emit_vertex_input(trans, i);
                        }
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                }
                break;
        }
}

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static void
emit_tgsi_instruction(struct tgsi_to_qir *trans,
                      struct tgsi_full_instruction *tgsi_inst)
{
        struct qcompile *c = trans->c;
        struct {
                enum qop op;
                struct qreg (*func)(struct tgsi_to_qir *trans,
                                    struct tgsi_full_instruction *tgsi_inst,
                                    enum qop op,
                                    struct qreg *src, int i);
        } op_trans[] = {
                [TGSI_OPCODE_MOV] = { QOP_MOV, tgsi_to_qir_alu },
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                [TGSI_OPCODE_ABS] = { 0, tgsi_to_qir_abs },
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                [TGSI_OPCODE_MUL] = { QOP_FMUL, tgsi_to_qir_alu },
                [TGSI_OPCODE_ADD] = { QOP_FADD, tgsi_to_qir_alu },
                [TGSI_OPCODE_SUB] = { QOP_FSUB, tgsi_to_qir_alu },
                [TGSI_OPCODE_MIN] = { QOP_FMIN, tgsi_to_qir_alu },
                [TGSI_OPCODE_MAX] = { QOP_FMAX, tgsi_to_qir_alu },
                [TGSI_OPCODE_RSQ] = { QOP_RSQ, tgsi_to_qir_alu },
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                [TGSI_OPCODE_SEQ] = { QOP_SEQ, tgsi_to_qir_alu },
                [TGSI_OPCODE_SNE] = { QOP_SNE, tgsi_to_qir_alu },
                [TGSI_OPCODE_SGE] = { QOP_SGE, tgsi_to_qir_alu },
                [TGSI_OPCODE_SLT] = { QOP_SLT, tgsi_to_qir_alu },
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                [TGSI_OPCODE_CMP] = { QOP_CMP, tgsi_to_qir_alu },
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                [TGSI_OPCODE_MAD] = { 0, tgsi_to_qir_mad },
                [TGSI_OPCODE_DP2] = { 0, tgsi_to_qir_dp2 },
                [TGSI_OPCODE_DP3] = { 0, tgsi_to_qir_dp3 },
                [TGSI_OPCODE_DP4] = { 0, tgsi_to_qir_dp4 },
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                [TGSI_OPCODE_RCP] = { QOP_RCP, tgsi_to_qir_alu },
                [TGSI_OPCODE_RSQ] = { QOP_RSQ, tgsi_to_qir_alu },
                [TGSI_OPCODE_EX2] = { QOP_EXP2, tgsi_to_qir_alu },
                [TGSI_OPCODE_LG2] = { QOP_LOG2, tgsi_to_qir_alu },
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                [TGSI_OPCODE_LIT] = { 0, tgsi_to_qir_lit },
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                [TGSI_OPCODE_LRP] = { 0, tgsi_to_qir_lrp },
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                [TGSI_OPCODE_POW] = { 0, tgsi_to_qir_pow },
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                [TGSI_OPCODE_TRUNC] = { 0, tgsi_to_qir_trunc },
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                [TGSI_OPCODE_FRC] = { 0, tgsi_to_qir_frc },
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                [TGSI_OPCODE_SIN] = { 0, tgsi_to_qir_sin },
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                [TGSI_OPCODE_COS] = { 0, tgsi_to_qir_cos },
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        };
        static int asdf = 0;
        uint32_t tgsi_op = tgsi_inst->Instruction.Opcode;

        if (tgsi_op == TGSI_OPCODE_END)
                return;

        if (tgsi_op > ARRAY_SIZE(op_trans) || !op_trans[tgsi_op].func) {
                fprintf(stderr, "unknown tgsi inst: ");
                tgsi_dump_instruction(tgsi_inst, asdf++);
                fprintf(stderr, "\n");
                abort();
        }

        struct qreg src_regs[12];
        for (int s = 0; s < 3; s++) {
                for (int i = 0; i < 4; i++) {
                        src_regs[4 * s + i] =
                                get_src(trans, &tgsi_inst->Src[s].Register, i);
                }
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        }

        for (int i = 0; i < 4; i++) {
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                if (!(tgsi_inst->Dst[0].Register.WriteMask & (1 << i)))
                        continue;

                struct qreg result;

                result = op_trans[tgsi_op].func(trans, tgsi_inst,
                                                op_trans[tgsi_op].op,
                                                src_regs, i);

                if (tgsi_inst->Instruction.Saturate) {
                        float low = (tgsi_inst->Instruction.Saturate ==
                                     TGSI_SAT_MINUS_PLUS_ONE ? -1.0 : 0.0);
                        result = qir_FMAX(c,
                                          qir_FMIN(c,
                                                   result,
                                                   qir_uniform_f(trans, 1.0)),
                                          qir_uniform_f(trans, low));
                }

                update_dst(trans, tgsi_inst, i, result);
616
        }
617
}
618

619 620 621
static void
parse_tgsi_immediate(struct tgsi_to_qir *trans, struct tgsi_full_immediate *imm)
{
622
        for (int i = 0; i < 4; i++) {
623 624
                unsigned n = trans->num_consts++;
                trans->consts[n] = qir_uniform_ui(trans, imm->u[i].Uint);
625
        }
626
}
627

628
static void
629
emit_frag_end(struct tgsi_to_qir *trans)
630 631 632 633
{
        struct qcompile *c = trans->c;

        struct qreg t = qir_get_temp(c);
634 635 636 637

        const struct util_format_description *format_desc =
                util_format_description(trans->fs_key->color_format);

638 639 640 641 642 643 644 645 646 647 648 649 650 651 652
        /* Debug: Sometimes you're getting a black output and just want to see
         * if the FS is getting executed at all.  Spam magenta into the color
         * output.
         */
        if (0) {
                trans->outputs[format_desc->swizzle[0]] =
                        qir_uniform_ui(trans, fui(1.0));
                trans->outputs[format_desc->swizzle[1]] =
                        qir_uniform_ui(trans, fui(0.0));
                trans->outputs[format_desc->swizzle[2]] =
                        qir_uniform_ui(trans, fui(1.0));
                trans->outputs[format_desc->swizzle[3]] =
                        qir_uniform_ui(trans, fui(0.5));
        }

653 654 655 656 657 658 659
        struct qreg swizzled_outputs[4] = {
                trans->outputs[format_desc->swizzle[0]],
                trans->outputs[format_desc->swizzle[1]],
                trans->outputs[format_desc->swizzle[2]],
                trans->outputs[format_desc->swizzle[3]],
        };

660
        qir_emit(c, qir_inst4(QOP_PACK_COLORS, t,
661 662 663 664
                              swizzled_outputs[0],
                              swizzled_outputs[1],
                              swizzled_outputs[2],
                              swizzled_outputs[3]));
665 666 667
        qir_emit(c, qir_inst(QOP_TLB_COLOR_WRITE, c->undef,
                             t, c->undef));
}
668

669
static void
670
emit_scaled_viewport_write(struct tgsi_to_qir *trans, struct qreg rcp_w)
671 672 673 674 675
{
        struct qcompile *c = trans->c;
        struct qreg xyi[2];

        for (int i = 0; i < 2; i++) {
676 677
                struct qreg scale =
                        add_uniform(trans, QUNIFORM_VIEWPORT_X_SCALE + i, 0);
678

679 680 681 682 683
                xyi[i] = qir_FTOI(c, qir_FMUL(c,
                                              qir_FMUL(c,
                                                       trans->outputs[i],
                                                       scale),
                                              rcp_w));
684 685 686
        }

        qir_VPM_WRITE(c, qir_PACK_SCALED(c, xyi[0], xyi[1]));
687 688
}

689
static void
690
emit_zs_write(struct tgsi_to_qir *trans, struct qreg rcp_w)
691
{
692
        struct qcompile *c = trans->c;
693

694
        qir_VPM_WRITE(c, qir_FMUL(c, trans->outputs[2], rcp_w));
695
}
696

697
static void
698
emit_rcp_wc_write(struct tgsi_to_qir *trans, struct qreg rcp_w)
699 700 701
{
        struct qcompile *c = trans->c;

702
        qir_VPM_WRITE(c, rcp_w);
703
}
704

705
static void
706
emit_vert_end(struct tgsi_to_qir *trans)
707
{
708 709
        struct qcompile *c = trans->c;

710 711 712 713 714
        struct qreg rcp_w = qir_RCP(c, trans->outputs[3]);

        emit_scaled_viewport_write(trans, rcp_w);
        emit_zs_write(trans, rcp_w);
        emit_rcp_wc_write(trans, rcp_w);
715 716 717 718

        for (int i = 4; i < trans->num_outputs; i++) {
                qir_VPM_WRITE(c, trans->outputs[i]);
        }
719
}
720

721
static void
722
emit_coord_end(struct tgsi_to_qir *trans)
723 724
{
        struct qcompile *c = trans->c;
725

726 727
        struct qreg rcp_w = qir_RCP(c, trans->outputs[3]);

728 729
        for (int i = 0; i < 4; i++)
                qir_VPM_WRITE(c, trans->outputs[i]);
730

731 732 733
        emit_scaled_viewport_write(trans, rcp_w);
        emit_zs_write(trans, rcp_w);
        emit_rcp_wc_write(trans, rcp_w);
734
}
735

736
static struct tgsi_to_qir *
737 738
vc4_shader_tgsi_to_qir(struct vc4_compiled_shader *shader, enum qstage stage,
                       struct vc4_key *key)
739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757
{
        struct tgsi_to_qir *trans = CALLOC_STRUCT(tgsi_to_qir);
        struct qcompile *c;
        int ret;

        c = qir_compile_init();
        c->stage = stage;

        memset(trans, 0, sizeof(*trans));
        /* XXX sizing */
        trans->temps = calloc(sizeof(struct qreg), 1024);
        trans->inputs = calloc(sizeof(struct qreg), 8 * 4);
        trans->outputs = calloc(sizeof(struct qreg), 1024);
        trans->uniforms = calloc(sizeof(struct qreg), 1024);
        trans->consts = calloc(sizeof(struct qreg), 1024);

        trans->uniform_data = calloc(sizeof(uint32_t), 1024);
        trans->uniform_contents = calloc(sizeof(enum quniform_contents), 1024);

758
        trans->shader_state = key->shader_state;
759
        trans->c = c;
760
        ret = tgsi_parse_init(&trans->parser, trans->shader_state->base.tokens);
761 762
        assert(ret == TGSI_PARSE_OK);

763 764
        if (vc4_debug & VC4_DEBUG_TGSI) {
                fprintf(stderr, "TGSI:\n");
765
                tgsi_dump(trans->shader_state->base.tokens, 0);
766
        }
767 768 769

        switch (stage) {
        case QSTAGE_FRAG:
770
                trans->fs_key = (struct vc4_fs_key *)key;
771 772
                break;
        case QSTAGE_VERT:
773
                trans->vs_key = (struct vc4_vs_key *)key;
774 775
                break;
        case QSTAGE_COORD:
776
                trans->vs_key = (struct vc4_vs_key *)key;
777
                break;
778 779
        }

780 781
        while (!tgsi_parse_end_of_tokens(&trans->parser)) {
                tgsi_parse_token(&trans->parser);
782

783
                switch (trans->parser.FullToken.Token.Type) {
784 785 786 787 788
                case TGSI_TOKEN_TYPE_DECLARATION:
                        emit_tgsi_declaration(trans,
                                              &trans->parser.FullToken.FullDeclaration);
                        break;

789 790 791 792
                case TGSI_TOKEN_TYPE_INSTRUCTION:
                        emit_tgsi_instruction(trans,
                                              &trans->parser.FullToken.FullInstruction);
                        break;
793

794 795 796 797 798 799 800 801 802
                case TGSI_TOKEN_TYPE_IMMEDIATE:
                        parse_tgsi_immediate(trans,
                                             &trans->parser.FullToken.FullImmediate);
                        break;
                }
        }

        switch (stage) {
        case QSTAGE_FRAG:
803
                emit_frag_end(trans);
804 805
                break;
        case QSTAGE_VERT:
806
                emit_vert_end(trans);
807 808
                break;
        case QSTAGE_COORD:
809
                emit_coord_end(trans);
810 811 812
                break;
        }

813 814 815 816 817
        tgsi_parse_free(&trans->parser);
        free(trans->temps);

        qir_optimize(c);

818 819 820 821
        if (vc4_debug & VC4_DEBUG_QIR) {
                fprintf(stderr, "QIR:\n");
                qir_dump(c);
        }
822
        vc4_generate_code(c);
823

824 825
        if (vc4_debug & VC4_DEBUG_SHADERDB) {
                fprintf(stderr, "SHADER-DB: %s: %d instructions\n",
826
                        qir_get_stage_name(c->stage), c->qpu_inst_count);
827 828 829 830
                fprintf(stderr, "SHADER-DB: %s: %d uniforms\n",
                        qir_get_stage_name(c->stage), trans->num_uniforms);
        }

831 832 833
        return trans;
}

834
static void *
835 836 837 838 839 840 841 842 843 844 845 846 847
vc4_shader_state_create(struct pipe_context *pctx,
                        const struct pipe_shader_state *cso)
{
        struct vc4_shader_state *so = CALLOC_STRUCT(vc4_shader_state);
        if (!so)
                return NULL;

        so->base.tokens = tgsi_dup_tokens(cso->tokens);

        return so;
}

static void
848
copy_uniform_state_to_shader(struct vc4_compiled_shader *shader,
849 850 851 852
                             int shader_index,
                             struct tgsi_to_qir *trans)
{
        int count = trans->num_uniforms;
853
        struct vc4_shader_uniform_info *uinfo = &shader->uniforms[shader_index];
854 855 856 857 858 859 860 861

        uinfo->count = count;
        uinfo->data = malloc(count * sizeof(*uinfo->data));
        memcpy(uinfo->data, trans->uniform_data,
               count * sizeof(*uinfo->data));
        uinfo->contents = malloc(count * sizeof(*uinfo->contents));
        memcpy(uinfo->contents, trans->uniform_contents,
               count * sizeof(*uinfo->contents));
862 863
}

864 865 866
static void
vc4_fs_compile(struct vc4_context *vc4, struct vc4_compiled_shader *shader,
               struct vc4_fs_key *key)
867
{
868 869
        struct tgsi_to_qir *trans = vc4_shader_tgsi_to_qir(shader, QSTAGE_FRAG,
                                                           &key->base);
870
        shader->num_inputs = trans->c->num_inputs;
871 872
        copy_uniform_state_to_shader(shader, 0, trans);
        shader->bo = vc4_bo_alloc_mem(vc4->screen, trans->c->qpu_insts,
873
                                      trans->c->qpu_inst_count * sizeof(uint64_t),
874
                                      "fs_code");
875

876 877 878
        qir_compile_destroy(trans->c);
        free(trans);
}
879

880 881 882
static void
vc4_vs_compile(struct vc4_context *vc4, struct vc4_compiled_shader *shader,
               struct vc4_vs_key *key)
883
{
884 885 886 887
        struct tgsi_to_qir *vs_trans = vc4_shader_tgsi_to_qir(shader,
                                                              QSTAGE_VERT,
                                                              &key->base);
        copy_uniform_state_to_shader(shader, 0, vs_trans);
888

889 890 891 892
        struct tgsi_to_qir *cs_trans = vc4_shader_tgsi_to_qir(shader,
                                                              QSTAGE_COORD,
                                                              &key->base);
        copy_uniform_state_to_shader(shader, 1, cs_trans);
893

894 895
        uint32_t vs_size = vs_trans->c->qpu_inst_count * sizeof(uint64_t);
        uint32_t cs_size = cs_trans->c->qpu_inst_count * sizeof(uint64_t);
896 897 898 899
        shader->coord_shader_offset = vs_size; /* XXX: alignment? */
        shader->bo = vc4_bo_alloc(vc4->screen,
                                  shader->coord_shader_offset + cs_size,
                                  "vs_code");
900

901
        void *map = vc4_bo_map(shader->bo);
902
        memcpy(map, vs_trans->c->qpu_insts, vs_size);
903 904
        memcpy(map + shader->coord_shader_offset,
               cs_trans->c->qpu_insts, cs_size);
905 906 907

        qir_compile_destroy(vs_trans->c);
        qir_compile_destroy(cs_trans->c);
908
}
909

910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944
static void
vc4_update_compiled_fs(struct vc4_context *vc4)
{
        struct vc4_fs_key local_key;
        struct vc4_fs_key *key = &local_key;

        memset(key, 0, sizeof(*key));
        key->base.shader_state = vc4->prog.bind_fs;

        if (vc4->framebuffer.cbufs[0])
                key->color_format = vc4->framebuffer.cbufs[0]->format;

        vc4->prog.fs = util_hash_table_get(vc4->fs_cache, key);
        if (vc4->prog.fs)
                return;

        key = malloc(sizeof(*key));
        memcpy(key, &local_key, sizeof(*key));

        struct vc4_compiled_shader *shader = CALLOC_STRUCT(vc4_compiled_shader);
        vc4_fs_compile(vc4, shader, key);
        util_hash_table_set(vc4->fs_cache, key, shader);

        vc4->prog.fs = shader;
}

static void
vc4_update_compiled_vs(struct vc4_context *vc4)
{
        struct vc4_vs_key local_key;
        struct vc4_vs_key *key = &local_key;

        memset(key, 0, sizeof(*key));
        key->base.shader_state = vc4->prog.bind_vs;

945 946 947
        for (int i = 0; i < ARRAY_SIZE(key->attr_formats); i++)
                key->attr_formats[i] = vc4->vtx->pipe[i].src_format;

948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027
        vc4->prog.vs = util_hash_table_get(vc4->vs_cache, key);
        if (vc4->prog.vs)
                return;

        key = malloc(sizeof(*key));
        memcpy(key, &local_key, sizeof(*key));

        struct vc4_compiled_shader *shader = CALLOC_STRUCT(vc4_compiled_shader);
        vc4_vs_compile(vc4, shader, key);
        util_hash_table_set(vc4->vs_cache, key, shader);

        vc4->prog.vs = shader;
}

void
vc4_update_compiled_shaders(struct vc4_context *vc4)
{
        vc4_update_compiled_fs(vc4);
        vc4_update_compiled_vs(vc4);
}

static unsigned
fs_cache_hash(void *key)
{
        return util_hash_crc32(key, sizeof(struct vc4_fs_key));
}

static unsigned
vs_cache_hash(void *key)
{
        return util_hash_crc32(key, sizeof(struct vc4_vs_key));
}

static int
fs_cache_compare(void *key1, void *key2)
{
        return memcmp(key1, key2, sizeof(struct vc4_fs_key));
}

static int
vs_cache_compare(void *key1, void *key2)
{
        return memcmp(key1, key2, sizeof(struct vc4_vs_key));
}

struct delete_state {
        struct vc4_context *vc4;
        struct vc4_shader_state *shader_state;
};

static enum pipe_error
fs_delete_from_cache(void *in_key, void *in_value, void *data)
{
        struct delete_state *del = data;
        struct vc4_fs_key *key = in_key;
        struct vc4_compiled_shader *shader = in_value;

        if (key->base.shader_state == data) {
                util_hash_table_remove(del->vc4->fs_cache, key);
                vc4_bo_unreference(&shader->bo);
                free(shader);
        }

        return 0;
}

static enum pipe_error
vs_delete_from_cache(void *in_key, void *in_value, void *data)
{
        struct delete_state *del = data;
        struct vc4_vs_key *key = in_key;
        struct vc4_compiled_shader *shader = in_value;

        if (key->base.shader_state == data) {
                util_hash_table_remove(del->vc4->vs_cache, key);
                vc4_bo_unreference(&shader->bo);
                free(shader);
        }

        return 0;
1028 1029 1030 1031 1032
}

static void
vc4_shader_state_delete(struct pipe_context *pctx, void *hwcso)
{
1033 1034 1035 1036 1037 1038 1039 1040
        struct vc4_context *vc4 = vc4_context(pctx);
        struct vc4_shader_state *so = hwcso;
        struct delete_state del;

        del.vc4 = vc4;
        del.shader_state = so;
        util_hash_table_foreach(vc4->fs_cache, fs_delete_from_cache, &del);
        util_hash_table_foreach(vc4->vs_cache, vs_delete_from_cache, &del);
1041

1042
        free((void *)so->base.tokens);
1043 1044 1045
        free(so);
}

1046
void
1047
vc4_get_uniform_bo(struct vc4_context *vc4, struct vc4_compiled_shader *shader,
1048 1049 1050 1051 1052
                   struct vc4_constbuf_stateobj *cb,
                   int shader_index, struct vc4_bo **out_bo,
                   uint32_t *out_offset)
{
        struct vc4_shader_uniform_info *uinfo = &shader->uniforms[shader_index];
1053 1054
        struct vc4_bo *ubo = vc4_bo_alloc(vc4->screen,
                                          MAX2(1, uinfo->count * 4), "ubo");
1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071
        uint32_t *map = vc4_bo_map(ubo);

        for (int i = 0; i < uinfo->count; i++) {
                switch (uinfo->contents[i]) {
                case QUNIFORM_CONSTANT:
                        map[i] = uinfo->data[i];
                        break;
                case QUNIFORM_UNIFORM:
                        map[i] = ((uint32_t *)cb->cb[0].user_buffer)[uinfo->data[i]];
                        break;
                case QUNIFORM_VIEWPORT_X_SCALE:
                        map[i] = fui(vc4->framebuffer.width * 16.0f / 2.0f);
                        break;
                case QUNIFORM_VIEWPORT_Y_SCALE:
                        map[i] = fui(vc4->framebuffer.height * -16.0f / 2.0f);
                        break;
                }
1072
#if 0
1073 1074 1075 1076 1077 1078 1079 1080 1081
                fprintf(stderr, "%p/%d: %d: 0x%08x (%f)\n",
                        shader, shader_index, i, map[i], uif(map[i]));
#endif
        }

        *out_bo = ubo;
        *out_offset = 0;
}

1082 1083 1084 1085
static void
vc4_fp_state_bind(struct pipe_context *pctx, void *hwcso)
{
        struct vc4_context *vc4 = vc4_context(pctx);
1086
        vc4->prog.bind_fs = hwcso;
1087 1088 1089 1090 1091 1092 1093 1094
        vc4->prog.dirty |= VC4_SHADER_DIRTY_FP;
        vc4->dirty |= VC4_DIRTY_PROG;
}

static void
vc4_vp_state_bind(struct pipe_context *pctx, void *hwcso)
{
        struct vc4_context *vc4 = vc4_context(pctx);
1095
        vc4->prog.bind_vs = hwcso;
1096 1097 1098 1099 1100 1101 1102
        vc4->prog.dirty |= VC4_SHADER_DIRTY_VP;
        vc4->dirty |= VC4_DIRTY_PROG;
}

void
vc4_program_init(struct pipe_context *pctx)
{
1103 1104 1105
        struct vc4_context *vc4 = vc4_context(pctx);

        pctx->create_vs_state = vc4_shader_state_create;
1106 1107
        pctx->delete_vs_state = vc4_shader_state_delete;

1108
        pctx->create_fs_state = vc4_shader_state_create;
1109 1110 1111 1112
        pctx->delete_fs_state = vc4_shader_state_delete;

        pctx->bind_fs_state = vc4_fp_state_bind;
        pctx->bind_vs_state = vc4_vp_state_bind;
1113 1114 1115

        vc4->fs_cache = util_hash_table_create(fs_cache_hash, fs_cache_compare);
        vc4->vs_cache = util_hash_table_create(vs_cache_hash, vs_cache_compare);
1116
}