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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 OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
  18.  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  19.  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  20.  * OTHER DEALINGS IN THE SOFTWARE.
  21.  *
  22.  * Authors: Ben Skeggs
  23.  *
  24.  */
  25.  
  26. #include "draw/draw_context.h"
  27. #include "tgsi/tgsi_parse.h"
  28.  
  29. #include "nv_object.xml.h"
  30. #include "nv30/nv30-40_3d.xml.h"
  31. #include "nv30/nv30_context.h"
  32. #include "nv30/nvfx_shader.h"
  33.  
  34. static void
  35. nv30_fragprog_upload(struct nv30_context *nv30)
  36. {
  37.    struct nouveau_context *nv = &nv30->base;
  38.    struct nv30_fragprog *fp = nv30->fragprog.program;
  39.    struct pipe_context *pipe = &nv30->base.pipe;
  40.    struct pipe_transfer *transfer;
  41.    uint32_t *map;
  42.    int i; (void)i;
  43.  
  44.    if (unlikely(!fp->buffer)) {
  45.       fp->buffer = pipe_buffer_create(pipe->screen, 0, 0, fp->insn_len * 4);
  46.    }
  47.  
  48.    map = pipe_buffer_map(pipe, fp->buffer, PIPE_TRANSFER_WRITE, &transfer);
  49. #ifndef PIPE_ARCH_BIG_ENDIAN
  50.    memcpy(map, fp->insn, fp->insn_len * 4);
  51. #else
  52.    for (i = 0; i < fp->insn_len; i++)
  53.       *map++ = (fp->insn[i] >> 16) | (fp->insn[i] << 16);
  54. #endif
  55.    pipe_buffer_unmap(pipe, transfer);
  56.  
  57.    if (nv04_resource(fp->buffer)->domain != NOUVEAU_BO_VRAM)
  58.       nouveau_buffer_migrate(nv, nv04_resource(fp->buffer), NOUVEAU_BO_VRAM);
  59. }
  60.  
  61. void
  62. nv30_fragprog_validate(struct nv30_context *nv30)
  63. {
  64.    struct nouveau_pushbuf *push = nv30->base.pushbuf;
  65.    struct nouveau_object *eng3d = nv30->screen->eng3d;
  66.    struct nv30_fragprog *fp = nv30->fragprog.program;
  67.    boolean upload = FALSE;
  68.    int i;
  69.  
  70.    if (!fp->translated) {
  71.       _nvfx_fragprog_translate(eng3d->oclass, fp);
  72.       if (!fp->translated)
  73.          return;
  74.  
  75.       upload = TRUE;
  76.    }
  77.  
  78.    /* update constants, also needs to be done on every fp switch as we
  79.     * have no idea whether the constbuf changed in the meantime
  80.     */
  81.    if (nv30->fragprog.constbuf) {
  82.       struct pipe_resource *constbuf = nv30->fragprog.constbuf;
  83.       uint32_t *cbuf = (uint32_t *)nv04_resource(constbuf)->data;
  84.  
  85.       for (i = 0; i < fp->nr_consts; i++) {
  86.          unsigned off = fp->consts[i].offset;
  87.          unsigned idx = fp->consts[i].index * 4;
  88.  
  89.          if (!memcmp(&fp->insn[off], &cbuf[idx], 4 * 4))
  90.             continue;
  91.          memcpy(&fp->insn[off], &cbuf[idx], 4 * 4);
  92.          upload = TRUE;
  93.       }
  94.    }
  95.  
  96.    if (upload)
  97.       nv30_fragprog_upload(nv30);
  98.  
  99.    /* FP_ACTIVE_PROGRAM needs to be done again even if only the consts
  100.     * were updated.  TEX_CACHE_CTL magic is not enough to convince the
  101.     * GPU that it should re-read the fragprog from VRAM... sigh.
  102.     */
  103.    if (nv30->state.fragprog != fp || upload) {
  104.       struct nv04_resource *r = nv04_resource(fp->buffer);
  105.  
  106.       if (!PUSH_SPACE(push, 8))
  107.          return;
  108.       PUSH_RESET(push, BUFCTX_FRAGPROG);
  109.  
  110.       BEGIN_NV04(push, NV30_3D(FP_ACTIVE_PROGRAM), 1);
  111.       PUSH_RESRC(push, NV30_3D(FP_ACTIVE_PROGRAM), BUFCTX_FRAGPROG, r, 0,
  112.                        NOUVEAU_BO_LOW | NOUVEAU_BO_RD | NOUVEAU_BO_OR,
  113.                        NV30_3D_FP_ACTIVE_PROGRAM_DMA0,
  114.                        NV30_3D_FP_ACTIVE_PROGRAM_DMA1);
  115.       BEGIN_NV04(push, NV30_3D(FP_CONTROL), 1);
  116.       PUSH_DATA (push, fp->fp_control);
  117.       if (eng3d->oclass < NV40_3D_CLASS) {
  118.          BEGIN_NV04(push, NV30_3D(FP_REG_CONTROL), 1);
  119.          PUSH_DATA (push, 0x00010004);
  120.          BEGIN_NV04(push, NV30_3D(TEX_UNITS_ENABLE), 1);
  121.          PUSH_DATA (push, fp->texcoords);
  122.       } else {
  123.          BEGIN_NV04(push, SUBC_3D(0x0b40), 1);
  124.          PUSH_DATA (push, 0x00000000);
  125.       }
  126.  
  127.       nv30->state.fragprog = fp;
  128.    }
  129. }
  130.  
  131. static void *
  132. nv30_fp_state_create(struct pipe_context *pipe,
  133.                      const struct pipe_shader_state *cso)
  134. {
  135.    struct nv30_fragprog *fp = CALLOC_STRUCT(nv30_fragprog);
  136.    if (!fp)
  137.       return NULL;
  138.  
  139.    fp->pipe.tokens = tgsi_dup_tokens(cso->tokens);
  140.    tgsi_scan_shader(fp->pipe.tokens, &fp->info);
  141.    return fp;
  142. }
  143.  
  144. static void
  145. nv30_fp_state_delete(struct pipe_context *pipe, void *hwcso)
  146. {
  147.    struct nv30_fragprog *fp = hwcso;
  148.  
  149.    pipe_resource_reference(&fp->buffer, NULL);
  150.  
  151.    if (fp->draw)
  152.       draw_delete_fragment_shader(nv30_context(pipe)->draw, fp->draw);
  153.  
  154.    FREE((void *)fp->pipe.tokens);
  155.    FREE(fp->insn);
  156.    FREE(fp->consts);
  157.    FREE(fp);
  158. }
  159.  
  160. static void
  161. nv30_fp_state_bind(struct pipe_context *pipe, void *hwcso)
  162. {
  163.    struct nv30_context *nv30 = nv30_context(pipe);
  164.  
  165.    nv30->fragprog.program = hwcso;
  166.    nv30->dirty |= NV30_NEW_FRAGPROG;
  167. }
  168.  
  169. void
  170. nv30_fragprog_init(struct pipe_context *pipe)
  171. {
  172.    pipe->create_fs_state = nv30_fp_state_create;
  173.    pipe->bind_fs_state = nv30_fp_state_bind;
  174.    pipe->delete_fs_state = nv30_fp_state_delete;
  175. }
  176.