src/gallium/drivers/nouveau/nv30/nv30_fragprog.c

   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 }