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      1 /*
      2  * Copyright 2012 Red Hat Inc.
      3  *
      4  * Permission is hereby granted, free of charge, to any person obtaining a
      5  * copy of this software and associated documentation files (the "Software"),
      6  * to deal in the Software without restriction, including without limitation
      7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
      8  * and/or sell copies of the Software, and to permit persons to whom the
      9  * Software is furnished to do so, subject to the following conditions:
     10  *
     11  * The above copyright notice and this permission notice shall be included in
     12  * all copies or substantial portions of the Software.
     13  *
     14  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
     15  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
     16  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
     17  * THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
     18  * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
     19  * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
     20  * SOFTWARE.
     21  *
     22  * Authors: Ben Skeggs
     23  *
     24  */
     25 
     26 #include "tgsi/tgsi_parse.h"
     27 
     28 #include "nouveau/nv_object.xml.h"
     29 #include "nv30-40_3d.xml.h"
     30 #include "nv30_context.h"
     31 #include "nvfx_shader.h"
     32 
     33 static void
     34 nv30_fragprog_upload(struct nv30_context *nv30)
     35 {
     36    struct nouveau_context *nv = &nv30->base;
     37    struct nv30_fragprog *fp = nv30->fragprog.program;
     38    struct pipe_context *pipe = &nv30->base.pipe;
     39    struct pipe_transfer *transfer;
     40    uint32_t *map;
     41    int i; (void)i;
     42 
     43    if (unlikely(!fp->buffer)) {
     44       fp->buffer = pipe_buffer_create(pipe->screen, 0, 0, fp->insn_len * 4);
     45    }
     46 
     47    map = pipe_buffer_map(pipe, fp->buffer, PIPE_TRANSFER_WRITE, &transfer);
     48 #ifndef PIPE_ARCH_BIG_ENDIAN
     49    memcpy(map, fp->insn, fp->insn_len * 4);
     50 #else
     51    for (i = 0; i < fp->insn_len; i++)
     52       *map++ = (fp->insn[i] >> 16) | (fp->insn[i] << 16);
     53 #endif
     54    pipe_buffer_unmap(pipe, transfer);
     55 
     56    if (nv04_resource(fp->buffer)->domain != NOUVEAU_BO_VRAM)
     57       nouveau_buffer_migrate(nv, nv04_resource(fp->buffer), NOUVEAU_BO_VRAM);
     58 }
     59 
     60 void
     61 nv30_fragprog_validate(struct nv30_context *nv30)
     62 {
     63    struct nouveau_pushbuf *push = nv30->base.pushbuf;
     64    struct nouveau_object *eng3d = nv30->screen->eng3d;
     65    struct nv30_fragprog *fp = nv30->fragprog.program;
     66    boolean upload = FALSE;
     67    int i;
     68 
     69    if (!fp->translated) {
     70       _nvfx_fragprog_translate(nv30, fp, FALSE);
     71       if (!fp->translated)
     72          return;
     73 
     74       upload = TRUE;
     75    }
     76 
     77    /* update constants, also needs to be done on every fp switch as we
     78     * have no idea whether the constbuf changed in the meantime
     79     */
     80    if (nv30->fragprog.constbuf) {
     81       struct pipe_resource *constbuf = nv30->fragprog.constbuf;
     82       uint32_t *cbuf = (uint32_t *)nv04_resource(constbuf)->data;
     83 
     84       for (i = 0; i < fp->nr_consts; i++) {
     85          unsigned off = fp->consts[i].offset;
     86          unsigned idx = fp->consts[i].index * 4;
     87 
     88          if (!memcmp(&fp->insn[off], &cbuf[idx], 4 * 4))
     89             continue;
     90          memcpy(&fp->insn[off], &cbuf[idx], 4 * 4);
     91          upload = TRUE;
     92       }
     93    }
     94 
     95    if (upload)
     96       nv30_fragprog_upload(nv30);
     97 
     98    /* FP_ACTIVE_PROGRAM needs to be done again even if only the consts
     99     * were updated.  TEX_CACHE_CTL magic is not enough to convince the
    100     * GPU that it should re-read the fragprog from VRAM... sigh.
    101     */
    102    if (nv30->state.fragprog != fp || upload) {
    103       struct nv04_resource *r = nv04_resource(fp->buffer);
    104 
    105       if (!PUSH_SPACE(push, 8))
    106          return;
    107       PUSH_RESET(push, BUFCTX_FRAGPROG);
    108 
    109       BEGIN_NV04(push, NV30_3D(FP_ACTIVE_PROGRAM), 1);
    110       PUSH_RESRC(push, NV30_3D(FP_ACTIVE_PROGRAM), BUFCTX_FRAGPROG, r, 0,
    111                        NOUVEAU_BO_LOW | NOUVEAU_BO_RD | NOUVEAU_BO_OR,
    112                        NV30_3D_FP_ACTIVE_PROGRAM_DMA0,
    113                        NV30_3D_FP_ACTIVE_PROGRAM_DMA1);
    114       BEGIN_NV04(push, NV30_3D(FP_CONTROL), 1);
    115       PUSH_DATA (push, fp->fp_control);
    116       if (eng3d->oclass < NV40_3D_CLASS) {
    117          BEGIN_NV04(push, NV30_3D(FP_REG_CONTROL), 1);
    118          PUSH_DATA (push, 0x00010004);
    119          BEGIN_NV04(push, NV30_3D(TEX_UNITS_ENABLE), 1);
    120          PUSH_DATA (push, fp->texcoords);
    121       } else {
    122          BEGIN_NV04(push, SUBC_3D(0x0b40), 1);
    123          PUSH_DATA (push, 0x00000000);
    124       }
    125 
    126       nv30->state.fragprog = fp;
    127    }
    128 }
    129 
    130 static void *
    131 nv30_fp_state_create(struct pipe_context *pipe,
    132                      const struct pipe_shader_state *cso)
    133 {
    134    struct nv30_fragprog *fp = CALLOC_STRUCT(nv30_fragprog);
    135    if (!fp)
    136       return NULL;
    137 
    138    fp->pipe.tokens = tgsi_dup_tokens(cso->tokens);
    139    tgsi_scan_shader(fp->pipe.tokens, &fp->info);
    140    return fp;
    141 }
    142 
    143 static void
    144 nv30_fp_state_delete(struct pipe_context *pipe, void *hwcso)
    145 {
    146    struct nv30_fragprog *fp = hwcso;
    147 
    148    pipe_resource_reference(&fp->buffer, NULL);
    149 
    150    FREE((void *)fp->pipe.tokens);
    151    FREE(fp->insn);
    152    FREE(fp);
    153 }
    154 
    155 static void
    156 nv30_fp_state_bind(struct pipe_context *pipe, void *hwcso)
    157 {
    158    struct nv30_context *nv30 = nv30_context(pipe);
    159 
    160    nv30->fragprog.program = hwcso;
    161    nv30->dirty |= NV30_NEW_FRAGPROG;
    162 }
    163 
    164 void
    165 nv30_fragprog_init(struct pipe_context *pipe)
    166 {
    167    pipe->create_fs_state = nv30_fp_state_create;
    168    pipe->bind_fs_state = nv30_fp_state_bind;
    169    pipe->delete_fs_state = nv30_fp_state_delete;
    170 }
    171