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          BEGIN_NV04(push, NV30_3D(STENCIL_ENABLE(0)), 2);
  79          PUSH_DATA (push, 0);
  80          PUSH_DATA (push, 0x000000ff);
  81          nv30->dirty |= NV30_NEW_ZSA;
  82       }
  83    }
  84
  85    /*XXX: wtf? fixes clears sometimes not clearing on nv3x... */
  86    if (nv30->screen->eng3d->oclass < NV40_3D_CLASS) {
  87       BEGIN_NV04(push, NV30_3D(CLEAR_DEPTH_VALUE), 3);
  88       PUSH_DATA (push, zeta);
  89       PUSH_DATA (push, colr);
  90       PUSH_DATA (push, mode);
  91    }
  92
  93    BEGIN_NV04(push, NV30_3D(CLEAR_DEPTH_VALUE), 3);
  94    PUSH_DATA (push, zeta);
  95    PUSH_DATA (push, colr);
  96    PUSH_DATA (push, mode);
  97
  98    nv30_state_release(nv30);
  99 }
 100
 101 static void
 102 nv30_clear_render_target(struct pipe_context *pipe, struct pipe_surface *ps,
 103                          const union pipe_color_union *color,
 104                          unsigned x, unsigned y, unsigned w, unsigned h)
 105 {
 106    struct nv30_context *nv30 = nv30_context(pipe);
 107    struct nv30_surface *sf = nv30_surface(ps);
 108    struct nv30_miptree *mt = nv30_miptree(ps->texture);
 109    struct nouveau_pushbuf *push = nv30->base.pushbuf;
 110    struct nouveau_object *eng3d = nv30->screen->eng3d;
 111    struct nouveau_pushbuf_refn refn;
 112    uint32_t rt_format;
 113
 114    rt_format = nv30_format(pipe->screen, ps->format)->hw;
 115    if (util_format_get_blocksize(ps->format) == 4)
 116       rt_format |= NV30_3D_RT_FORMAT_ZETA_Z24S8;
 117    else
 118       rt_format |= NV30_3D_RT_FORMAT_ZETA_Z16;
 119
 120    if (nv30_miptree(ps->texture)->swizzled) {
 121       rt_format |= NV30_3D_RT_FORMAT_TYPE_SWIZZLED;
 122       rt_format |= util_logbase2(sf->width) << 16;
 123       rt_format |= util_logbase2(sf->height) << 24;
 124    } else {
 125       rt_format |= NV30_3D_RT_FORMAT_TYPE_LINEAR;
 126    }
 127
 128    refn.bo = mt->base.bo;
 129    refn.flags = NOUVEAU_BO_VRAM | NOUVEAU_BO_WR;
 130    if (nouveau_pushbuf_space(push, 16, 1, 0) ||
 131        nouveau_pushbuf_refn (push, &refn, 1))
 132       return;
 133
 134    BEGIN_NV04(push, NV30_3D(RT_ENABLE), 1);
 135    PUSH_DATA (push, NV30_3D_RT_ENABLE_COLOR0);
 136    BEGIN_NV04(push, NV30_3D(RT_HORIZ), 3);
 137    PUSH_DATA (push, sf->width << 16);
 138    PUSH_DATA (push, sf->height << 16);
 139    PUSH_DATA (push, rt_format);
 140    BEGIN_NV04(push, NV30_3D(COLOR0_PITCH), 2);
 141    if (eng3d->oclass < NV40_3D_CLASS)
 142       PUSH_DATA (push, (sf->pitch << 16) | sf->pitch);
 143    else
 144       PUSH_DATA (push, sf->pitch);
 145    PUSH_RELOC(push, mt->base.bo, sf->offset, NOUVEAU_BO_LOW, 0, 0);
 146    BEGIN_NV04(push, NV30_3D(SCISSOR_HORIZ), 2);
 147    PUSH_DATA (push, (w << 16) | x);
 148    PUSH_DATA (push, (h << 16) | y);
 149
 150    BEGIN_NV04(push, NV30_3D(CLEAR_COLOR_VALUE), 2);
 151    PUSH_DATA (push, pack_rgba(ps->format, color->f));
 152    PUSH_DATA (push, NV30_3D_CLEAR_BUFFERS_COLOR_R |
 153                     NV30_3D_CLEAR_BUFFERS_COLOR_G |
 154                     NV30_3D_CLEAR_BUFFERS_COLOR_B |
 155                     NV30_3D_CLEAR_BUFFERS_COLOR_A);
 156
 157    nv30->dirty |= NV30_NEW_FRAMEBUFFER | NV30_NEW_SCISSOR;
 158 }
 159
 160 static void
 161 nv30_clear_depth_stencil(struct pipe_context *pipe, struct pipe_surface *ps,
 162                          unsigned buffers, double depth, unsigned stencil,
 163                          unsigned x, unsigned y, unsigned w, unsigned h)
 164 {
 165    struct nv30_context *nv30 = nv30_context(pipe);
 166    struct nv30_surface *sf = nv30_surface(ps);
 167    struct nv30_miptree *mt = nv30_miptree(ps->texture);
 168    struct nouveau_pushbuf *push = nv30->base.pushbuf;
 169    struct nouveau_object *eng3d = nv30->screen->eng3d;
 170    struct nouveau_pushbuf_refn refn;
 171    uint32_t rt_format, mode = 0;
 172
 173    rt_format = nv30_format(pipe->screen, ps->format)->hw;
 174    if (util_format_get_blocksize(ps->format) == 4)
 175       rt_format |= NV30_3D_RT_FORMAT_COLOR_A8R8G8B8;
 176    else
 177       rt_format |= NV30_3D_RT_FORMAT_COLOR_R5G6B5;
 178
 179    if (nv30_miptree(ps->texture)->swizzled) {
 180       rt_format |= NV30_3D_RT_FORMAT_TYPE_SWIZZLED;
 181       rt_format |= util_logbase2(sf->width) << 16;
 182       rt_format |= util_logbase2(sf->height) << 24;
 183    } else {
 184       rt_format |= NV30_3D_RT_FORMAT_TYPE_LINEAR;
 185    }
 186
 187    if (buffers & PIPE_CLEAR_DEPTH)
 188       mode |= NV30_3D_CLEAR_BUFFERS_DEPTH;
 189    if (buffers & PIPE_CLEAR_STENCIL)
 190       mode |= NV30_3D_CLEAR_BUFFERS_STENCIL;
 191
 192    refn.bo = mt->base.bo;
 193    refn.flags = NOUVEAU_BO_VRAM | NOUVEAU_BO_WR;
 194    if (nouveau_pushbuf_space(push, 32, 1, 0) ||
 195        nouveau_pushbuf_refn (push, &refn, 1))
 196       return;
 197
 198    BEGIN_NV04(push, NV30_3D(RT_ENABLE), 1);
 199    PUSH_DATA (push, 0);
 200    BEGIN_NV04(push, NV30_3D(RT_HORIZ), 3);
 201    PUSH_DATA (push, sf->width << 16);
 202    PUSH_DATA (push, sf->height << 16);
 203    PUSH_DATA (push, rt_format);
 204    if (eng3d->oclass < NV40_3D_CLASS) {
 205       BEGIN_NV04(push, NV30_3D(COLOR0_PITCH), 1);
 206       PUSH_DATA (push, (sf->pitch << 16) | sf->pitch);
 207    } else {
 208       BEGIN_NV04(push, NV40_3D(ZETA_PITCH), 1);
 209       PUSH_DATA (push, sf->pitch);
 210    }
 211    BEGIN_NV04(push, NV30_3D(ZETA_OFFSET), 1);
 212    PUSH_RELOC(push, mt->base.bo, sf->offset, NOUVEAU_BO_LOW, 0, 0);
 213    BEGIN_NV04(push, NV30_3D(SCISSOR_HORIZ), 2);
 214    PUSH_DATA (push, (w << 16) | x);
 215    PUSH_DATA (push, (h << 16) | y);
 216
 217    BEGIN_NV04(push, NV30_3D(CLEAR_DEPTH_VALUE), 1);
 218    PUSH_DATA (push, pack_zeta(ps->format, depth, stencil));
 219    BEGIN_NV04(push, NV30_3D(CLEAR_BUFFERS), 1);
 220    PUSH_DATA (push, mode);
 221
 222    nv30->dirty |= NV30_NEW_FRAMEBUFFER | NV30_NEW_SCISSOR;
 223 }
 224
 225 void
 226 nv30_clear_init(struct pipe_context *pipe)
 227 {
 228    pipe->clear = nv30_clear;
 229    pipe->clear_render_target = nv30_clear_render_target;
 230    pipe->clear_depth_stencil = nv30_clear_depth_stencil;
 231 }