src/gallium/drivers/nouveau/nv30/nv30_clear.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 "pipe/p_defines.h"
  27 #include "util/u_pack_color.h"
  28
  29 #include "nouveau_gldefs.h"
  30 #include "nv_object.xml.h"
  31 #include "nv30/nv30-40_3d.xml.h"
  32 #include "nv30/nv30_context.h"
  33 #include "nv30/nv30_format.h"
  34
  35 static INLINE uint32_t
  36 pack_rgba(enum pipe_format format, const float *rgba)
  37 {
  38    union util_color uc;
  39    util_pack_color(rgba, format, &uc);
  40    return uc.ui[0];
  41 }
  42
  43 static INLINE uint32_t
  44 pack_zeta(enum pipe_format format, double depth, unsigned stencil)
  45 {
  46    uint32_t zuint = (uint32_t)(depth * 4294967295.0);
  47    if (format != PIPE_FORMAT_Z16_UNORM)
  48       return (zuint & 0xffffff00) | (stencil & 0xff);
  49    return zuint >> 16;
  50 }
  51
  52 static void
  53 nv30_clear(struct pipe_context *pipe, unsigned buffers,
  54            const union pipe_color_union *color, double depth, unsigned stencil)
  55 {
  56    struct nv30_context *nv30 = nv30_context(pipe);
  57    struct nouveau_pushbuf *push = nv30->base.pushbuf;
  58    struct pipe_framebuffer_state *fb = &nv30->framebuffer;
  59    uint32_t colr = 0, zeta = 0, mode = 0;
  60
  61    if (!nv30_state_validate(nv30, NV30_NEW_FRAMEBUFFER | NV30_NEW_SCISSOR, true))
  62       return;
  63
  64    if (buffers & PIPE_CLEAR_COLOR && fb->nr_cbufs) {
  65       colr  = pack_rgba(fb->cbufs[0]->format, color->f);
  66       mode |= NV30_3D_CLEAR_BUFFERS_COLOR_R |
  67               NV30_3D_CLEAR_BUFFERS_COLOR_G |
  68               NV30_3D_CLEAR_BUFFERS_COLOR_B |
  69               NV30_3D_CLEAR_BUFFERS_COLOR_A;
  70    }
  71
  72    if (fb->zsbuf) {
  73       zeta = pack_zeta(fb->zsbuf->format, depth, stencil);
  74       if (buffers & PIPE_CLEAR_DEPTH)
  75          mode |= NV30_3D_CLEAR_BUFFERS_DEPTH;
  76       if (buffers & PIPE_CLEAR_STENCIL)
  77          mode |= NV30_3D_CLEAR_BUFFERS_STENCIL;
  78    }
  79
  80    /*XXX: wtf? fixes clears sometimes not clearing on nv3x... */
  81    if (nv30->screen->eng3d->oclass < NV40_3D_CLASS) {
  82       BEGIN_NV04(push, NV30_3D(CLEAR_DEPTH_VALUE), 3);
  83       PUSH_DATA (push, zeta);
  84       PUSH_DATA (push, colr);
  85       PUSH_DATA (push, mode);
  86    }
  87
  88    BEGIN_NV04(push, NV30_3D(CLEAR_DEPTH_VALUE), 3);
  89    PUSH_DATA (push, zeta);
  90    PUSH_DATA (push, colr);
  91    PUSH_DATA (push, mode);
  92
  93    nv30_state_release(nv30);
  94 }
  95
  96 static void
  97 nv30_clear_render_target(struct pipe_context *pipe, struct pipe_surface *ps,
  98                          const union pipe_color_union *color,
  99                          unsigned x, unsigned y, unsigned w, unsigned h)
 100 {
 101    struct nv30_context *nv30 = nv30_context(pipe);
 102    struct nv30_surface *sf = nv30_surface(ps);
 103    struct nv30_miptree *mt = nv30_miptree(ps->texture);
 104    struct nouveau_pushbuf *push = nv30->base.pushbuf;
 105    struct nouveau_object *eng3d = nv30->screen->eng3d;
 106    struct nouveau_pushbuf_refn refn;
 107    uint32_t rt_format;
 108
 109    rt_format = nv30_format(pipe->screen, ps->format)->hw;
 110    if (util_format_get_blocksize(ps->format) == 4)
 111       rt_format |= NV30_3D_RT_FORMAT_ZETA_Z24S8;
 112    else
 113       rt_format |= NV30_3D_RT_FORMAT_ZETA_Z16;
 114
 115    if (nv30_miptree(ps->texture)->swizzled) {
 116       rt_format |= NV30_3D_RT_FORMAT_TYPE_SWIZZLED;
 117       rt_format |= util_logbase2(sf->width) << 16;
 118       rt_format |= util_logbase2(sf->height) << 24;
 119    } else {
 120       rt_format |= NV30_3D_RT_FORMAT_TYPE_LINEAR;
 121    }
 122
 123    refn.bo = mt->base.bo;
 124    refn.flags = NOUVEAU_BO_VRAM | NOUVEAU_BO_WR;
 125    if (nouveau_pushbuf_space(push, 16, 1, 0) ||
 126        nouveau_pushbuf_refn (push, &refn, 1))
 127       return;
 128
 129    BEGIN_NV04(push, NV30_3D(RT_ENABLE), 1);
 130    PUSH_DATA (push, NV30_3D_RT_ENABLE_COLOR0);
 131    BEGIN_NV04(push, NV30_3D(RT_HORIZ), 3);
 132    PUSH_DATA (push, sf->width << 16);
 133    PUSH_DATA (push, sf->height << 16);
 134    PUSH_DATA (push, rt_format);
 135    BEGIN_NV04(push, NV30_3D(COLOR0_PITCH), 2);
 136    if (eng3d->oclass < NV40_3D_CLASS)
 137       PUSH_DATA (push, (sf->pitch << 16) | sf->pitch);
 138    else
 139       PUSH_DATA (push, sf->pitch);
 140    PUSH_RELOC(push, mt->base.bo, sf->offset, NOUVEAU_BO_LOW, 0, 0);
 141    BEGIN_NV04(push, NV30_3D(SCISSOR_HORIZ), 2);
 142    PUSH_DATA (push, (w << 16) | x);
 143    PUSH_DATA (push, (h << 16) | y);
 144
 145    BEGIN_NV04(push, NV30_3D(CLEAR_COLOR_VALUE), 2);
 146    PUSH_DATA (push, pack_rgba(ps->format, color->f));
 147    PUSH_DATA (push, NV30_3D_CLEAR_BUFFERS_COLOR_R |
 148                     NV30_3D_CLEAR_BUFFERS_COLOR_G |
 149                     NV30_3D_CLEAR_BUFFERS_COLOR_B |
 150                     NV30_3D_CLEAR_BUFFERS_COLOR_A);
 151
 152    nv30->dirty |= NV30_NEW_FRAMEBUFFER | NV30_NEW_SCISSOR;
 153 }
 154
 155 static void
 156 nv30_clear_depth_stencil(struct pipe_context *pipe, struct pipe_surface *ps,
 157                          unsigned buffers, double depth, unsigned stencil,
 158                          unsigned x, unsigned y, unsigned w, unsigned h)
 159 {
 160    struct nv30_context *nv30 = nv30_context(pipe);
 161    struct nv30_surface *sf = nv30_surface(ps);
 162    struct nv30_miptree *mt = nv30_miptree(ps->texture);
 163    struct nouveau_pushbuf *push = nv30->base.pushbuf;
 164    struct nouveau_object *eng3d = nv30->screen->eng3d;
 165    struct nouveau_pushbuf_refn refn;
 166    uint32_t rt_format, mode = 0;
 167
 168    rt_format = nv30_format(pipe->screen, ps->format)->hw;
 169    if (util_format_get_blocksize(ps->format) == 4)
 170       rt_format |= NV30_3D_RT_FORMAT_COLOR_A8R8G8B8;
 171    else
 172       rt_format |= NV30_3D_RT_FORMAT_COLOR_R5G6B5;
 173
 174    if (nv30_miptree(ps->texture)->swizzled) {
 175       rt_format |= NV30_3D_RT_FORMAT_TYPE_SWIZZLED;
 176       rt_format |= util_logbase2(sf->width) << 16;
 177       rt_format |= util_logbase2(sf->height) << 24;
 178    } else {
 179       rt_format |= NV30_3D_RT_FORMAT_TYPE_LINEAR;
 180    }
 181
 182    if (buffers & PIPE_CLEAR_DEPTH)
 183       mode |= NV30_3D_CLEAR_BUFFERS_DEPTH;
 184    if (buffers & PIPE_CLEAR_STENCIL)
 185       mode |= NV30_3D_CLEAR_BUFFERS_STENCIL;
 186
 187    refn.bo = mt->base.bo;
 188    refn.flags = NOUVEAU_BO_VRAM | NOUVEAU_BO_WR;
 189    if (nouveau_pushbuf_space(push, 32, 1, 0) ||
 190        nouveau_pushbuf_refn (push, &refn, 1))
 191       return;
 192
 193    BEGIN_NV04(push, NV30_3D(RT_ENABLE), 1);
 194    PUSH_DATA (push, 0);
 195    BEGIN_NV04(push, NV30_3D(RT_HORIZ), 3);
 196    PUSH_DATA (push, sf->width << 16);
 197    PUSH_DATA (push, sf->height << 16);
 198    PUSH_DATA (push, rt_format);
 199    if (eng3d->oclass < NV40_3D_CLASS) {
 200       BEGIN_NV04(push, NV30_3D(COLOR0_PITCH), 1);
 201       PUSH_DATA (push, (sf->pitch << 16) | sf->pitch);
 202    } else {
 203       BEGIN_NV04(push, NV40_3D(ZETA_PITCH), 1);
 204       PUSH_DATA (push, sf->pitch);
 205    }
 206    BEGIN_NV04(push, NV30_3D(ZETA_OFFSET), 1);
 207    PUSH_RELOC(push, mt->base.bo, sf->offset, NOUVEAU_BO_LOW, 0, 0);
 208    BEGIN_NV04(push, NV30_3D(SCISSOR_HORIZ), 2);
 209    PUSH_DATA (push, (w << 16) | x);
 210    PUSH_DATA (push, (h << 16) | y);
 211
 212    BEGIN_NV04(push, NV30_3D(CLEAR_DEPTH_VALUE), 1);
 213    PUSH_DATA (push, pack_zeta(ps->format, depth, stencil));
 214    BEGIN_NV04(push, NV30_3D(CLEAR_BUFFERS), 1);
 215    PUSH_DATA (push, mode);
 216
 217    nv30->dirty |= NV30_NEW_FRAMEBUFFER | NV30_NEW_SCISSOR;
 218 }
 219
 220 void
 221 nv30_clear_init(struct pipe_context *pipe)
 222 {
 223    pipe->clear = nv30_clear;
 224    pipe->clear_render_target = nv30_clear_render_target;
 225    pipe->clear_depth_stencil = nv30_clear_depth_stencil;
 226 }