src/gallium/drivers/nvc0/nvc0_surface.c - platform/external/mesa3d - Gitiles

 /*
  * Copyright 2008 Ben Skeggs
  *
  * Permission is hereby granted, free of charge, to any person obtaining a
  * copy of this software and associated documentation files (the "Software"),
  * to deal in the Software without restriction, including without limitation
  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  * and/or sell copies of the Software, and to permit persons to whom the
  * Software is furnished to do so, subject to the following conditions:
  *
  * The above copyright notice and this permission notice shall be included in
  * all copies or substantial portions of the Software.
  *
  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  * THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
  * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
  * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  * SOFTWARE.
  */

 #include <stdint.h>

 #include "pipe/p_defines.h"

 #include "util/u_inlines.h"
 #include "util/u_pack_color.h"
 #include "util/u_format.h"
 #include "util/u_surface.h"

 #include "nvc0_context.h"
 #include "nvc0_resource.h"

 #include "nv50/nv50_defs.xml.h"

 #define NVC0_ENG2D_SUPPORTED_FORMATS 0xff9ccfe1cce3ccc9ULL

 /* return TRUE for formats that can be converted among each other by NVC0_2D */
 static INLINE boolean
 nvc0_2d_format_faithful(enum pipe_format format)
 {
    uint8_t id = nvc0_format_table[format].rt;

    return (id >= 0xc0) && (NVC0_ENG2D_SUPPORTED_FORMATS & (1ULL << (id - 0xc0)));
 }

 static INLINE uint8_t
 nvc0_2d_format(enum pipe_format format)
 {
    uint8_t id = nvc0_format_table[format].rt;

    /* Hardware values for color formats range from 0xc0 to 0xff,
     * but the 2D engine doesn't support all of them.
     */
    if (nvc0_2d_format_faithful(format))
       return id;

    switch (util_format_get_blocksize(format)) {
    case 1:
       return NV50_SURFACE_FORMAT_R8_UNORM;
    case 2:
       return NV50_SURFACE_FORMAT_R16_UNORM;
    case 4:
       return NV50_SURFACE_FORMAT_BGRA8_UNORM;
    case 8:
       return NV50_SURFACE_FORMAT_RGBA16_UNORM;
    case 16:
       return NV50_SURFACE_FORMAT_RGBA32_FLOAT;
    default:
       return 0;
    }
 }

 static int
 nvc0_2d_texture_set(struct nouveau_channel *chan, int dst,
                     struct nv50_miptree *mt, unsigned level, unsigned layer)
 {
    struct nouveau_bo *bo = mt->base.bo;
    uint32_t width, height, depth;
    uint32_t format;
    uint32_t mthd = dst ? NVC0_2D_DST_FORMAT : NVC0_2D_SRC_FORMAT;
    uint32_t flags = mt->base.domain | (dst ? NOUVEAU_BO_WR : NOUVEAU_BO_RD);
    uint32_t offset = mt->level[level].offset;

    format = nvc0_2d_format(mt->base.base.format);
    if (!format) {
       NOUVEAU_ERR("invalid/unsupported surface format: %s\n",
                   util_format_name(mt->base.base.format));
       return 1;
    }

    width = u_minify(mt->base.base.width0, level) << mt->ms_x;
    height = u_minify(mt->base.base.height0, level) << mt->ms_y;
    depth = u_minify(mt->base.base.depth0, level);

    /* layer has to be < depth, and depth > tile depth / 2 */

    if (!mt->layout_3d) {
       offset += mt->layer_stride * layer;
       layer = 0;
       depth = 1;
    } else
    if (!dst) {
       offset += nvc0_mt_zslice_offset(mt, level, layer);
       layer = 0;
    }

    if (!(bo->tile_flags & NOUVEAU_BO_TILE_LAYOUT_MASK)) {
       BEGIN_RING(chan, RING_2D_(mthd), 2);
       OUT_RING  (chan, format);
       OUT_RING  (chan, 1);
       BEGIN_RING(chan, RING_2D_(mthd + 0x14), 5);
       OUT_RING  (chan, mt->level[level].pitch);
       OUT_RING  (chan, width);
       OUT_RING  (chan, height);
       OUT_RELOCh(chan, bo, offset, flags);
       OUT_RELOCl(chan, bo, offset, flags);
    } else {
       BEGIN_RING(chan, RING_2D_(mthd), 5);
       OUT_RING  (chan, format);
       OUT_RING  (chan, 0);
       OUT_RING  (chan, mt->level[level].tile_mode);
       OUT_RING  (chan, depth);
       OUT_RING  (chan, layer);
       BEGIN_RING(chan, RING_2D_(mthd + 0x18), 4);
       OUT_RING  (chan, width);
       OUT_RING  (chan, height);
       OUT_RELOCh(chan, bo, offset, flags);
       OUT_RELOCl(chan, bo, offset, flags);
    }

 #if 0
    if (dst) {
       BEGIN_RING(chan, RING_2D_(NVC0_2D_CLIP_X), 4);
       OUT_RING  (chan, 0);
       OUT_RING  (chan, 0);
       OUT_RING  (chan, width);
       OUT_RING  (chan, height);
    }
 #endif
    return 0;
 }

 static int
 nvc0_2d_texture_do_copy(struct nouveau_channel *chan,
                         struct nv50_miptree *dst, unsigned dst_level,
                         unsigned dx, unsigned dy, unsigned dz,
                         struct nv50_miptree *src, unsigned src_level,
                         unsigned sx, unsigned sy, unsigned sz,
                         unsigned w, unsigned h)
 {
    static const uint32_t duvdxy[5] =
    {
       0x40000000, 0x80000000, 0x00000001, 0x00000002, 0x00000004
    };

    int ret;
    uint32_t ctrl = 0x00;

    ret = MARK_RING(chan, 2 * 16 + 32, 4);
    if (ret)
       return ret;

    ret = nvc0_2d_texture_set(chan, 1, dst, dst_level, dz);
    if (ret)
       return ret;

    ret = nvc0_2d_texture_set(chan, 0, src, src_level, sz);
    if (ret)
       return ret;

    /* NOTE: 2D engine doesn't work for MS8 */
    if (src->ms_x)
       ctrl = 0x11;

    /* 0/1 = CENTER/CORNER, 00/10 = POINT/BILINEAR */
    BEGIN_RING(chan, RING_2D(BLIT_CONTROL), 1);
    OUT_RING  (chan, ctrl);
    BEGIN_RING(chan, RING_2D(BLIT_DST_X), 4);
    OUT_RING  (chan, dx << dst->ms_x);
    OUT_RING  (chan, dy << dst->ms_y);
    OUT_RING  (chan, w << dst->ms_x);
    OUT_RING  (chan, h << dst->ms_y);
    BEGIN_RING(chan, RING_2D(BLIT_DU_DX_FRACT), 4);
    OUT_RING  (chan, duvdxy[2 + ((int)src->ms_x - (int)dst->ms_x)] & 0xf0000000);
    OUT_RING  (chan, duvdxy[2 + ((int)src->ms_x - (int)dst->ms_x)] & 0x0000000f);
    OUT_RING  (chan, duvdxy[2 + ((int)src->ms_y - (int)dst->ms_y)] & 0xf0000000);
    OUT_RING  (chan, duvdxy[2 + ((int)src->ms_y - (int)dst->ms_y)] & 0x0000000f);
    BEGIN_RING(chan, RING_2D(BLIT_SRC_X_FRACT), 4);
    OUT_RING  (chan, 0);
    OUT_RING  (chan, sx << src->ms_x);
    OUT_RING  (chan, 0);
    OUT_RING  (chan, sy << src->ms_x);

    return 0;
 }

 static void
 nvc0_resource_copy_region(struct pipe_context *pipe,
                           struct pipe_resource *dst, unsigned dst_level,
                           unsigned dstx, unsigned dsty, unsigned dstz,
                           struct pipe_resource *src, unsigned src_level,
                           const struct pipe_box *src_box)
 {
    struct nvc0_screen *screen = nvc0_context(pipe)->screen;
    int ret;
    unsigned dst_layer = dstz, src_layer = src_box->z;

    /* Fallback for buffers. */
    if (dst->target == PIPE_BUFFER && src->target == PIPE_BUFFER) {
       util_resource_copy_region(pipe, dst, dst_level, dstx, dsty, dstz,
                                 src, src_level, src_box);
       return;
    }

    nv04_resource(dst)->status |= NOUVEAU_BUFFER_STATUS_GPU_WRITING;

    if (src->format == dst->format && src->nr_samples == dst->nr_samples) {
       struct nv50_m2mf_rect drect, srect;
       unsigned i;
       unsigned nx = util_format_get_nblocksx(src->format, src_box->width);
       unsigned ny = util_format_get_nblocksy(src->format, src_box->height);

       nv50_m2mf_rect_setup(&drect, dst, dst_level, dstx, dsty, dstz);
       nv50_m2mf_rect_setup(&srect, src, src_level,
                            src_box->x, src_box->y, src_box->z);

       for (i = 0; i < src_box->depth; ++i) {
          nvc0_m2mf_transfer_rect(&screen->base.base, &drect, &srect, nx, ny);

          if (nv50_miptree(dst)->layout_3d)
             drect.z++;
          else
             drect.base += nv50_miptree(dst)->layer_stride;

          if (nv50_miptree(src)->layout_3d)
             srect.z++;
          else
             srect.base += nv50_miptree(src)->layer_stride;
       }
       return;
    }

    assert(nvc0_2d_format_faithful(src->format));
    assert(nvc0_2d_format_faithful(dst->format));

    for (; dst_layer < dstz + src_box->depth; ++dst_layer, ++src_layer) {
       ret = nvc0_2d_texture_do_copy(screen->base.channel,
                                     nv50_miptree(dst), dst_level,
                                     dstx, dsty, dst_layer,
                                     nv50_miptree(src), src_level,
                                     src_box->x, src_box->y, src_layer,
                                     src_box->width, src_box->height);
       if (ret)
          return;
    }
 }

 static void
 nvc0_clear_render_target(struct pipe_context *pipe,
                          struct pipe_surface *dst,
                          const float *rgba,
                          unsigned dstx, unsigned dsty,
                          unsigned width, unsigned height)
 {
 	struct nvc0_context *nv50 = nvc0_context(pipe);
 	struct nvc0_screen *screen = nv50->screen;
 	struct nouveau_channel *chan = screen->base.channel;
 	struct nv50_miptree *mt = nv50_miptree(dst->texture);
 	struct nv50_surface *sf = nv50_surface(dst);
 	struct nouveau_bo *bo = mt->base.bo;

 	BEGIN_RING(chan, RING_3D(CLEAR_COLOR(0)), 4);
 	OUT_RINGf (chan, rgba[0]);
 	OUT_RINGf (chan, rgba[1]);
 	OUT_RINGf (chan, rgba[2]);
 	OUT_RINGf (chan, rgba[3]);

 	if (MARK_RING(chan, 18, 2))
 		return;

 	BEGIN_RING(chan, RING_3D(RT_CONTROL), 1);
 	OUT_RING  (chan, 1);
 	BEGIN_RING(chan, RING_3D(RT_ADDRESS_HIGH(0)), 9);
 	OUT_RELOCh(chan, bo, sf->offset, NOUVEAU_BO_VRAM | NOUVEAU_BO_WR);
 	OUT_RELOCl(chan, bo, sf->offset, NOUVEAU_BO_VRAM | NOUVEAU_BO_WR);
 	OUT_RING  (chan, sf->width);
 	OUT_RING  (chan, sf->height);
 	OUT_RING  (chan, nvc0_format_table[dst->format].rt);
 	OUT_RING  (chan, (mt->layout_3d << 16) |
               mt->level[sf->base.u.tex.level].tile_mode);
 	OUT_RING  (chan, dst->u.tex.first_layer + sf->depth);
 	OUT_RING  (chan, mt->layer_stride >> 2);
 	OUT_RING  (chan, dst->u.tex.first_layer);

 	BEGIN_RING(chan, RING_3D(CLIP_RECT_HORIZ(0)), 2);
 	OUT_RING  (chan, ((dstx + width) << 16) | dstx);
 	OUT_RING  (chan, ((dsty + height) << 16) | dsty);
 	IMMED_RING(chan, RING_3D(CLIP_RECTS_EN), 1);

 	BEGIN_RING(chan, RING_3D(CLEAR_BUFFERS), 1);
 	OUT_RING  (chan, 0x3c);

 	IMMED_RING(chan, RING_3D(CLIP_RECTS_EN), 0);

 	nv50->dirty |= NVC0_NEW_FRAMEBUFFER;
 }

 static void
 nvc0_clear_depth_stencil(struct pipe_context *pipe,
                          struct pipe_surface *dst,
                          unsigned clear_flags,
                          double depth,
                          unsigned stencil,
                          unsigned dstx, unsigned dsty,
                          unsigned width, unsigned height)
 {
 	struct nvc0_context *nv50 = nvc0_context(pipe);
 	struct nvc0_screen *screen = nv50->screen;
 	struct nouveau_channel *chan = screen->base.channel;
 	struct nv50_miptree *mt = nv50_miptree(dst->texture);
 	struct nv50_surface *sf = nv50_surface(dst);
 	struct nouveau_bo *bo = mt->base.bo;
 	uint32_t mode = 0;
 	int unk = mt->base.base.target == PIPE_TEXTURE_2D;

 	if (clear_flags & PIPE_CLEAR_DEPTH) {
 		BEGIN_RING(chan, RING_3D(CLEAR_DEPTH), 1);
 		OUT_RINGf (chan, depth);
 		mode |= NVC0_3D_CLEAR_BUFFERS_Z;
 	}

 	if (clear_flags & PIPE_CLEAR_STENCIL) {
 		BEGIN_RING(chan, RING_3D(CLEAR_STENCIL), 1);
 		OUT_RING  (chan, stencil & 0xff);
 		mode |= NVC0_3D_CLEAR_BUFFERS_S;
 	}

 	if (MARK_RING(chan, 17, 2))
 		return;

 	BEGIN_RING(chan, RING_3D(ZETA_ADDRESS_HIGH), 5);
 	OUT_RELOCh(chan, bo, sf->offset, NOUVEAU_BO_VRAM | NOUVEAU_BO_WR);
 	OUT_RELOCl(chan, bo, sf->offset, NOUVEAU_BO_VRAM | NOUVEAU_BO_WR);
 	OUT_RING  (chan, nvc0_format_table[dst->format].rt);
 	OUT_RING  (chan, mt->level[sf->base.u.tex.level].tile_mode);
 	OUT_RING  (chan, mt->layer_stride >> 2);
 	BEGIN_RING(chan, RING_3D(ZETA_ENABLE), 1);
 	OUT_RING  (chan, 1);
 	BEGIN_RING(chan, RING_3D(ZETA_HORIZ), 3);
 	OUT_RING  (chan, sf->width);
 	OUT_RING  (chan, sf->height);
 	OUT_RING  (chan, (unk << 16) | (dst->u.tex.first_layer + sf->depth));
 	BEGIN_RING(chan, RING_3D(ZETA_BASE_LAYER), 1);
 	OUT_RING  (chan, dst->u.tex.first_layer);

 	BEGIN_RING(chan, RING_3D(CLIP_RECT_HORIZ(0)), 2);
 	OUT_RING  (chan, ((dstx + width) << 16) | dstx);
 	OUT_RING  (chan, ((dsty + height) << 16) | dsty);
 	IMMED_RING(chan, RING_3D(CLIP_RECTS_EN), 1);

 	BEGIN_RING(chan, RING_3D(CLEAR_BUFFERS), 1);
 	OUT_RING  (chan, mode);

 	IMMED_RING(chan, RING_3D(CLIP_RECTS_EN), 0);

 	nv50->dirty |= NVC0_NEW_FRAMEBUFFER;
 }

 void
 nvc0_clear(struct pipe_context *pipe, unsigned buffers,
            const float *rgba, double depth, unsigned stencil)
 {
    struct nvc0_context *nvc0 = nvc0_context(pipe);
    struct nouveau_channel *chan = nvc0->screen->base.channel;
    struct pipe_framebuffer_state *fb = &nvc0->framebuffer;
    unsigned i;
    const unsigned dirty = nvc0->dirty;
    uint32_t mode = 0;

    /* don't need NEW_BLEND, COLOR_MASK doesn't affect CLEAR_BUFFERS */
    nvc0->dirty &= NVC0_NEW_FRAMEBUFFER;
    if (!nvc0_state_validate(nvc0))
       return;

    if (buffers & PIPE_CLEAR_COLOR && fb->nr_cbufs) {
       BEGIN_RING(chan, RING_3D(CLEAR_COLOR(0)), 4);
       OUT_RINGf (chan, rgba[0]);
       OUT_RINGf (chan, rgba[1]);
       OUT_RINGf (chan, rgba[2]);
       OUT_RINGf (chan, rgba[3]);
       mode =
          NVC0_3D_CLEAR_BUFFERS_R | NVC0_3D_CLEAR_BUFFERS_G |
          NVC0_3D_CLEAR_BUFFERS_B | NVC0_3D_CLEAR_BUFFERS_A;
    }

    if (buffers & PIPE_CLEAR_DEPTH) {
       BEGIN_RING(chan, RING_3D(CLEAR_DEPTH), 1);
       OUT_RING  (chan, fui(depth));
       mode |= NVC0_3D_CLEAR_BUFFERS_Z;
    }

    if (buffers & PIPE_CLEAR_STENCIL) {
       BEGIN_RING(chan, RING_3D(CLEAR_STENCIL), 1);
       OUT_RING  (chan, stencil & 0xff);
       mode |= NVC0_3D_CLEAR_BUFFERS_S;
    }

    BEGIN_RING(chan, RING_3D(CLEAR_BUFFERS), 1);
    OUT_RING  (chan, mode);

    for (i = 1; i < fb->nr_cbufs; i++) {
       BEGIN_RING(chan, RING_3D(CLEAR_BUFFERS), 1);
       OUT_RING  (chan, (i << 6) | 0x3c);
    }

    nvc0->dirty = dirty & ~NVC0_NEW_FRAMEBUFFER;
 }

 void
 nvc0_init_surface_functions(struct nvc0_context *nvc0)
 {
    struct pipe_context *pipe = &nvc0->base.pipe;

    pipe->resource_copy_region = nvc0_resource_copy_region;
    pipe->clear_render_target = nvc0_clear_render_target;
    pipe->clear_depth_stencil = nvc0_clear_depth_stencil;
 }
	/*
	* Copyright 2008 Ben Skeggs
	*
	* Permission is hereby granted, free of charge, to any person obtaining a
	* copy of this software and associated documentation files (the "Software"),
	* to deal in the Software without restriction, including without limitation
	* the rights to use, copy, modify, merge, publish, distribute, sublicense,
	* and/or sell copies of the Software, and to permit persons to whom the
	* Software is furnished to do so, subject to the following conditions:
	*
	* The above copyright notice and this permission notice shall be included in
	* all copies or substantial portions of the Software.
	*
	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
	* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
	* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
	* THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
	* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
	* OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
	* SOFTWARE.
	*/

	#include <stdint.h>

	#include "pipe/p_defines.h"

	#include "util/u_inlines.h"
	#include "util/u_pack_color.h"
	#include "util/u_format.h"
	#include "util/u_surface.h"

	#include "nvc0_context.h"
	#include "nvc0_resource.h"

	#include "nv50/nv50_defs.xml.h"

	#define NVC0_ENG2D_SUPPORTED_FORMATS 0xff9ccfe1cce3ccc9ULL

	/* return TRUE for formats that can be converted among each other by NVC0_2D */
	static INLINE boolean
	nvc0_2d_format_faithful(enum pipe_format format)
	{
	uint8_t id = nvc0_format_table[format].rt;

	return (id >= 0xc0) && (NVC0_ENG2D_SUPPORTED_FORMATS & (1ULL << (id - 0xc0)));
	}

	static INLINE uint8_t
	nvc0_2d_format(enum pipe_format format)
	{
	uint8_t id = nvc0_format_table[format].rt;

	/* Hardware values for color formats range from 0xc0 to 0xff,
	* but the 2D engine doesn't support all of them.
	*/
	if (nvc0_2d_format_faithful(format))
	return id;

	switch (util_format_get_blocksize(format)) {
	case 1:
	return NV50_SURFACE_FORMAT_R8_UNORM;
	case 2:
	return NV50_SURFACE_FORMAT_R16_UNORM;
	case 4:
	return NV50_SURFACE_FORMAT_BGRA8_UNORM;
	case 8:
	return NV50_SURFACE_FORMAT_RGBA16_UNORM;
	case 16:
	return NV50_SURFACE_FORMAT_RGBA32_FLOAT;
	default:
	return 0;
	}
	}

	static int
	nvc0_2d_texture_set(struct nouveau_channel *chan, int dst,
	struct nv50_miptree *mt, unsigned level, unsigned layer)
	{
	struct nouveau_bo *bo = mt->base.bo;
	uint32_t width, height, depth;
	uint32_t format;
	uint32_t mthd = dst ? NVC0_2D_DST_FORMAT : NVC0_2D_SRC_FORMAT;
	uint32_t flags = mt->base.domain \| (dst ? NOUVEAU_BO_WR : NOUVEAU_BO_RD);
	uint32_t offset = mt->level[level].offset;

	format = nvc0_2d_format(mt->base.base.format);
	if (!format) {
	NOUVEAU_ERR("invalid/unsupported surface format: %s\n",
	util_format_name(mt->base.base.format));
	return 1;
	}

	width = u_minify(mt->base.base.width0, level) << mt->ms_x;
	height = u_minify(mt->base.base.height0, level) << mt->ms_y;
	depth = u_minify(mt->base.base.depth0, level);

	/* layer has to be < depth, and depth > tile depth / 2 */

	if (!mt->layout_3d) {
	offset += mt->layer_stride * layer;
	layer = 0;
	depth = 1;
	} else
	if (!dst) {
	offset += nvc0_mt_zslice_offset(mt, level, layer);
	layer = 0;
	}

	if (!(bo->tile_flags & NOUVEAU_BO_TILE_LAYOUT_MASK)) {
	BEGIN_RING(chan, RING_2D_(mthd), 2);
	OUT_RING (chan, format);
	OUT_RING (chan, 1);
	BEGIN_RING(chan, RING_2D_(mthd + 0x14), 5);
	OUT_RING (chan, mt->level[level].pitch);
	OUT_RING (chan, width);
	OUT_RING (chan, height);
	OUT_RELOCh(chan, bo, offset, flags);
	OUT_RELOCl(chan, bo, offset, flags);
	} else {
	BEGIN_RING(chan, RING_2D_(mthd), 5);
	OUT_RING (chan, format);
	OUT_RING (chan, 0);
	OUT_RING (chan, mt->level[level].tile_mode);
	OUT_RING (chan, depth);
	OUT_RING (chan, layer);
	BEGIN_RING(chan, RING_2D_(mthd + 0x18), 4);
	OUT_RING (chan, width);
	OUT_RING (chan, height);
	OUT_RELOCh(chan, bo, offset, flags);
	OUT_RELOCl(chan, bo, offset, flags);
	}

	#if 0
	if (dst) {
	BEGIN_RING(chan, RING_2D_(NVC0_2D_CLIP_X), 4);
	OUT_RING (chan, 0);
	OUT_RING (chan, 0);
	OUT_RING (chan, width);
	OUT_RING (chan, height);
	}
	#endif
	return 0;
	}

	static int
	nvc0_2d_texture_do_copy(struct nouveau_channel *chan,
	struct nv50_miptree *dst, unsigned dst_level,
	unsigned dx, unsigned dy, unsigned dz,
	struct nv50_miptree *src, unsigned src_level,
	unsigned sx, unsigned sy, unsigned sz,
	unsigned w, unsigned h)
	{
	static const uint32_t duvdxy[5] =
	{
	0x40000000, 0x80000000, 0x00000001, 0x00000002, 0x00000004
	};

	int ret;
	uint32_t ctrl = 0x00;

	ret = MARK_RING(chan, 2 * 16 + 32, 4);
	if (ret)
	return ret;

	ret = nvc0_2d_texture_set(chan, 1, dst, dst_level, dz);
	if (ret)
	return ret;

	ret = nvc0_2d_texture_set(chan, 0, src, src_level, sz);
	if (ret)
	return ret;

	/* NOTE: 2D engine doesn't work for MS8 */
	if (src->ms_x)
	ctrl = 0x11;

	/* 0/1 = CENTER/CORNER, 00/10 = POINT/BILINEAR */
	BEGIN_RING(chan, RING_2D(BLIT_CONTROL), 1);
	OUT_RING (chan, ctrl);
	BEGIN_RING(chan, RING_2D(BLIT_DST_X), 4);
	OUT_RING (chan, dx << dst->ms_x);
	OUT_RING (chan, dy << dst->ms_y);
	OUT_RING (chan, w << dst->ms_x);
	OUT_RING (chan, h << dst->ms_y);
	BEGIN_RING(chan, RING_2D(BLIT_DU_DX_FRACT), 4);
	OUT_RING (chan, duvdxy[2 + ((int)src->ms_x - (int)dst->ms_x)] & 0xf0000000);
	OUT_RING (chan, duvdxy[2 + ((int)src->ms_x - (int)dst->ms_x)] & 0x0000000f);
	OUT_RING (chan, duvdxy[2 + ((int)src->ms_y - (int)dst->ms_y)] & 0xf0000000);
	OUT_RING (chan, duvdxy[2 + ((int)src->ms_y - (int)dst->ms_y)] & 0x0000000f);
	BEGIN_RING(chan, RING_2D(BLIT_SRC_X_FRACT), 4);
	OUT_RING (chan, 0);
	OUT_RING (chan, sx << src->ms_x);
	OUT_RING (chan, 0);
	OUT_RING (chan, sy << src->ms_x);

	return 0;
	}

	static void
	nvc0_resource_copy_region(struct pipe_context *pipe,
	struct pipe_resource *dst, unsigned dst_level,
	unsigned dstx, unsigned dsty, unsigned dstz,
	struct pipe_resource *src, unsigned src_level,
	const struct pipe_box *src_box)
	{
	struct nvc0_screen *screen = nvc0_context(pipe)->screen;
	int ret;
	unsigned dst_layer = dstz, src_layer = src_box->z;

	/* Fallback for buffers. */
	if (dst->target == PIPE_BUFFER && src->target == PIPE_BUFFER) {
	util_resource_copy_region(pipe, dst, dst_level, dstx, dsty, dstz,
	src, src_level, src_box);
	return;
	}

	nv04_resource(dst)->status \|= NOUVEAU_BUFFER_STATUS_GPU_WRITING;

	if (src->format == dst->format && src->nr_samples == dst->nr_samples) {
	struct nv50_m2mf_rect drect, srect;
	unsigned i;
	unsigned nx = util_format_get_nblocksx(src->format, src_box->width);
	unsigned ny = util_format_get_nblocksy(src->format, src_box->height);

	nv50_m2mf_rect_setup(&drect, dst, dst_level, dstx, dsty, dstz);
	nv50_m2mf_rect_setup(&srect, src, src_level,
	src_box->x, src_box->y, src_box->z);

	for (i = 0; i < src_box->depth; ++i) {
	nvc0_m2mf_transfer_rect(&screen->base.base, &drect, &srect, nx, ny);

	if (nv50_miptree(dst)->layout_3d)
	drect.z++;
	else
	drect.base += nv50_miptree(dst)->layer_stride;

	if (nv50_miptree(src)->layout_3d)
	srect.z++;
	else
	srect.base += nv50_miptree(src)->layer_stride;
	}
	return;
	}

	assert(nvc0_2d_format_faithful(src->format));
	assert(nvc0_2d_format_faithful(dst->format));

	for (; dst_layer < dstz + src_box->depth; ++dst_layer, ++src_layer) {
	ret = nvc0_2d_texture_do_copy(screen->base.channel,
	nv50_miptree(dst), dst_level,
	dstx, dsty, dst_layer,
	nv50_miptree(src), src_level,
	src_box->x, src_box->y, src_layer,
	src_box->width, src_box->height);
	if (ret)
	return;
	}
	}

	static void
	nvc0_clear_render_target(struct pipe_context *pipe,
	struct pipe_surface *dst,
	const float *rgba,
	unsigned dstx, unsigned dsty,
	unsigned width, unsigned height)
	{
	struct nvc0_context *nv50 = nvc0_context(pipe);
	struct nvc0_screen *screen = nv50->screen;
	struct nouveau_channel *chan = screen->base.channel;
	struct nv50_miptree *mt = nv50_miptree(dst->texture);
	struct nv50_surface *sf = nv50_surface(dst);
	struct nouveau_bo *bo = mt->base.bo;

	BEGIN_RING(chan, RING_3D(CLEAR_COLOR(0)), 4);
	OUT_RINGf (chan, rgba[0]);
	OUT_RINGf (chan, rgba[1]);
	OUT_RINGf (chan, rgba[2]);
	OUT_RINGf (chan, rgba[3]);

	if (MARK_RING(chan, 18, 2))
	return;

	BEGIN_RING(chan, RING_3D(RT_CONTROL), 1);
	OUT_RING (chan, 1);
	BEGIN_RING(chan, RING_3D(RT_ADDRESS_HIGH(0)), 9);
	OUT_RELOCh(chan, bo, sf->offset, NOUVEAU_BO_VRAM \| NOUVEAU_BO_WR);
	OUT_RELOCl(chan, bo, sf->offset, NOUVEAU_BO_VRAM \| NOUVEAU_BO_WR);
	OUT_RING (chan, sf->width);
	OUT_RING (chan, sf->height);
	OUT_RING (chan, nvc0_format_table[dst->format].rt);
	OUT_RING (chan, (mt->layout_3d << 16) \|
	mt->level[sf->base.u.tex.level].tile_mode);
	OUT_RING (chan, dst->u.tex.first_layer + sf->depth);
	OUT_RING (chan, mt->layer_stride >> 2);
	OUT_RING (chan, dst->u.tex.first_layer);

	BEGIN_RING(chan, RING_3D(CLIP_RECT_HORIZ(0)), 2);
	OUT_RING (chan, ((dstx + width) << 16) \| dstx);
	OUT_RING (chan, ((dsty + height) << 16) \| dsty);
	IMMED_RING(chan, RING_3D(CLIP_RECTS_EN), 1);

	BEGIN_RING(chan, RING_3D(CLEAR_BUFFERS), 1);
	OUT_RING (chan, 0x3c);

	IMMED_RING(chan, RING_3D(CLIP_RECTS_EN), 0);

	nv50->dirty \|= NVC0_NEW_FRAMEBUFFER;
	}

	static void
	nvc0_clear_depth_stencil(struct pipe_context *pipe,
	struct pipe_surface *dst,
	unsigned clear_flags,
	double depth,
	unsigned stencil,
	unsigned dstx, unsigned dsty,
	unsigned width, unsigned height)
	{
	struct nvc0_context *nv50 = nvc0_context(pipe);
	struct nvc0_screen *screen = nv50->screen;
	struct nouveau_channel *chan = screen->base.channel;
	struct nv50_miptree *mt = nv50_miptree(dst->texture);
	struct nv50_surface *sf = nv50_surface(dst);
	struct nouveau_bo *bo = mt->base.bo;
	uint32_t mode = 0;
	int unk = mt->base.base.target == PIPE_TEXTURE_2D;

	if (clear_flags & PIPE_CLEAR_DEPTH) {
	BEGIN_RING(chan, RING_3D(CLEAR_DEPTH), 1);
	OUT_RINGf (chan, depth);
	mode \|= NVC0_3D_CLEAR_BUFFERS_Z;
	}

	if (clear_flags & PIPE_CLEAR_STENCIL) {
	BEGIN_RING(chan, RING_3D(CLEAR_STENCIL), 1);
	OUT_RING (chan, stencil & 0xff);
	mode \|= NVC0_3D_CLEAR_BUFFERS_S;
	}

	if (MARK_RING(chan, 17, 2))
	return;

	BEGIN_RING(chan, RING_3D(ZETA_ADDRESS_HIGH), 5);
	OUT_RELOCh(chan, bo, sf->offset, NOUVEAU_BO_VRAM \| NOUVEAU_BO_WR);
	OUT_RELOCl(chan, bo, sf->offset, NOUVEAU_BO_VRAM \| NOUVEAU_BO_WR);
	OUT_RING (chan, nvc0_format_table[dst->format].rt);
	OUT_RING (chan, mt->level[sf->base.u.tex.level].tile_mode);
	OUT_RING (chan, mt->layer_stride >> 2);
	BEGIN_RING(chan, RING_3D(ZETA_ENABLE), 1);
	OUT_RING (chan, 1);
	BEGIN_RING(chan, RING_3D(ZETA_HORIZ), 3);
	OUT_RING (chan, sf->width);
	OUT_RING (chan, sf->height);
	OUT_RING (chan, (unk << 16) \| (dst->u.tex.first_layer + sf->depth));
	BEGIN_RING(chan, RING_3D(ZETA_BASE_LAYER), 1);
	OUT_RING (chan, dst->u.tex.first_layer);

	BEGIN_RING(chan, RING_3D(CLIP_RECT_HORIZ(0)), 2);
	OUT_RING (chan, ((dstx + width) << 16) \| dstx);
	OUT_RING (chan, ((dsty + height) << 16) \| dsty);
	IMMED_RING(chan, RING_3D(CLIP_RECTS_EN), 1);

	BEGIN_RING(chan, RING_3D(CLEAR_BUFFERS), 1);
	OUT_RING (chan, mode);

	IMMED_RING(chan, RING_3D(CLIP_RECTS_EN), 0);

	nv50->dirty \|= NVC0_NEW_FRAMEBUFFER;
	}

	void
	nvc0_clear(struct pipe_context *pipe, unsigned buffers,
	const float *rgba, double depth, unsigned stencil)
	{
	struct nvc0_context *nvc0 = nvc0_context(pipe);
	struct nouveau_channel *chan = nvc0->screen->base.channel;
	struct pipe_framebuffer_state *fb = &nvc0->framebuffer;
	unsigned i;
	const unsigned dirty = nvc0->dirty;
	uint32_t mode = 0;

	/* don't need NEW_BLEND, COLOR_MASK doesn't affect CLEAR_BUFFERS */
	nvc0->dirty &= NVC0_NEW_FRAMEBUFFER;
	if (!nvc0_state_validate(nvc0))
	return;

	if (buffers & PIPE_CLEAR_COLOR && fb->nr_cbufs) {
	BEGIN_RING(chan, RING_3D(CLEAR_COLOR(0)), 4);
	OUT_RINGf (chan, rgba[0]);
	OUT_RINGf (chan, rgba[1]);
	OUT_RINGf (chan, rgba[2]);
	OUT_RINGf (chan, rgba[3]);
	mode =
	NVC0_3D_CLEAR_BUFFERS_R \| NVC0_3D_CLEAR_BUFFERS_G \|
	NVC0_3D_CLEAR_BUFFERS_B \| NVC0_3D_CLEAR_BUFFERS_A;
	}

	if (buffers & PIPE_CLEAR_DEPTH) {
	BEGIN_RING(chan, RING_3D(CLEAR_DEPTH), 1);
	OUT_RING (chan, fui(depth));
	mode \|= NVC0_3D_CLEAR_BUFFERS_Z;
	}

	if (buffers & PIPE_CLEAR_STENCIL) {
	BEGIN_RING(chan, RING_3D(CLEAR_STENCIL), 1);
	OUT_RING (chan, stencil & 0xff);
	mode \|= NVC0_3D_CLEAR_BUFFERS_S;
	}

	BEGIN_RING(chan, RING_3D(CLEAR_BUFFERS), 1);
	OUT_RING (chan, mode);

	for (i = 1; i < fb->nr_cbufs; i++) {
	BEGIN_RING(chan, RING_3D(CLEAR_BUFFERS), 1);
	OUT_RING (chan, (i << 6) \| 0x3c);
	}

	nvc0->dirty = dirty & ~NVC0_NEW_FRAMEBUFFER;
	}

	void
	nvc0_init_surface_functions(struct nvc0_context *nvc0)
	{
	struct pipe_context *pipe = &nvc0->base.pipe;

	pipe->resource_copy_region = nvc0_resource_copy_region;
	pipe->clear_render_target = nvc0_clear_render_target;
	pipe->clear_depth_stencil = nvc0_clear_depth_stencil;
	}