src/mesa/drivers/dri/nouveau/nv10_context.c - platform/external/mesa3d - Git at Google

 /*
  * Copyright (C) 2009-2010 Francisco Jerez.
  * All Rights Reserved.
  *
  * 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 (including the
  * next paragraph) 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 COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS 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 <stdbool.h>
 #include "main/state.h"
 #include "nouveau_driver.h"
 #include "nouveau_context.h"
 #include "nouveau_fbo.h"
 #include "nouveau_util.h"
 #include "nv_object.xml.h"
 #include "nv10_3d.xml.h"
 #include "nv04_driver.h"
 #include "nv10_driver.h"

 static GLboolean
 use_fast_zclear(struct gl_context *ctx, GLbitfield buffers)
 {
 	struct nouveau_context *nctx = to_nouveau_context(ctx);
 	struct gl_framebuffer *fb = ctx->DrawBuffer;

 	if (buffers & BUFFER_BIT_STENCIL) {
 		/*
 		 * The stencil test is bypassed when fast Z clears are
 		 * enabled.
 		 */
 		nctx->hierz.clear_blocked = GL_TRUE;
 		context_dirty(ctx, ZCLEAR);
 		return GL_FALSE;
 	}

 	return !nctx->hierz.clear_blocked &&
 		fb->_Xmax == fb->Width && fb->_Xmin == 0 &&
 		fb->_Ymax == fb->Height && fb->_Ymin == 0;
 }

 GLboolean
 nv10_use_viewport_zclear(struct gl_context *ctx)
 {
 	struct nouveau_context *nctx = to_nouveau_context(ctx);
 	struct gl_framebuffer *fb = ctx->DrawBuffer;
 	struct gl_renderbuffer *depthRb = fb->Attachment[BUFFER_DEPTH].Renderbuffer;

 	return context_chipset(ctx) < 0x17 &&
 		!nctx->hierz.clear_blocked && depthRb &&
 		(_mesa_get_format_bits(depthRb->Format,
 				       GL_DEPTH_BITS) >= 24);
 }

 float
 nv10_transform_depth(struct gl_context *ctx, float z)
 {
 	struct nouveau_context *nctx = to_nouveau_context(ctx);

 	if (nv10_use_viewport_zclear(ctx))
 		return 2097152.0 * (z + (nctx->hierz.clear_seq & 7));
 	else
 		return ctx->DrawBuffer->_DepthMaxF * z;
 }

 static void
 nv10_zclear(struct gl_context *ctx, GLbitfield *buffers)
 {
 	/*
 	 * Pre-nv17 cards don't have native support for fast Z clears,
 	 * but in some cases we can still "clear" the Z buffer without
 	 * actually blitting to it if we're willing to sacrifice a few
 	 * bits of depth precision.
 	 *
 	 * Each time a clear is requested we modify the viewport
 	 * transform in such a way that the old contents of the depth
 	 * buffer are clamped to the requested clear value when
 	 * they're read by the GPU.
 	 */
 	struct nouveau_context *nctx = to_nouveau_context(ctx);
 	struct gl_framebuffer *fb = ctx->DrawBuffer;
 	struct nouveau_framebuffer *nfb = to_nouveau_framebuffer(fb);
 	struct nouveau_surface *s = &to_nouveau_renderbuffer(
 		fb->Attachment[BUFFER_DEPTH].Renderbuffer)->surface;

 	if (nv10_use_viewport_zclear(ctx)) {
 		int x, y, w, h;
 		float z = ctx->Depth.Clear;
 		uint32_t value = pack_zs_f(s->format, z, 0);

 		get_scissors(fb, &x, &y, &w, &h);
 		*buffers &= ~BUFFER_BIT_DEPTH;

 		if (use_fast_zclear(ctx, *buffers)) {
 			if (nfb->hierz.clear_value != value) {
 				/* Don't fast clear if we're changing
 				 * the depth value. */
 				nfb->hierz.clear_value = value;

 			} else if (z == 0.0) {
 				nctx->hierz.clear_seq++;
 				context_dirty(ctx, ZCLEAR);

 				if ((nctx->hierz.clear_seq & 7) != 0 &&
 				    nctx->hierz.clear_seq != 1)
 					/* We didn't wrap around -- no need to
 					 * clear the depth buffer for real. */
 					return;

 			} else if (z == 1.0) {
 				nctx->hierz.clear_seq--;
 				context_dirty(ctx, ZCLEAR);

 				if ((nctx->hierz.clear_seq & 7) != 7)
 					/* No wrap around */
 					return;
 			}
 		}

 		value = pack_zs_f(s->format,
 				  (z + (nctx->hierz.clear_seq & 7)) / 8, 0);
 		context_drv(ctx)->surface_fill(ctx, s, ~0, value, x, y, w, h);
 	}
 }

 static void
 nv17_zclear(struct gl_context *ctx, GLbitfield *buffers)
 {
 	struct nouveau_context *nctx = to_nouveau_context(ctx);
 	struct nouveau_pushbuf *push = context_push(ctx);
 	struct nouveau_framebuffer *nfb = to_nouveau_framebuffer(
 		ctx->DrawBuffer);
 	struct nouveau_surface *s = &to_nouveau_renderbuffer(
 		nfb->base.Attachment[BUFFER_DEPTH].Renderbuffer)->surface;

 	/* Clear the hierarchical depth buffer */
 	BEGIN_NV04(push, NV17_3D(HIERZ_FILL_VALUE), 1);
 	PUSH_DATA (push, pack_zs_f(s->format, ctx->Depth.Clear, 0));
 	BEGIN_NV04(push, NV17_3D(HIERZ_BUFFER_CLEAR), 1);
 	PUSH_DATA (push, 1);

 	/* Mark the depth buffer as cleared */
 	if (use_fast_zclear(ctx, *buffers)) {
 		if (nctx->hierz.clear_seq)
 			*buffers &= ~BUFFER_BIT_DEPTH;

 		nfb->hierz.clear_value =
 			pack_zs_f(s->format, ctx->Depth.Clear, 0);
 		nctx->hierz.clear_seq++;

 		context_dirty(ctx, ZCLEAR);
 	}
 }

 static void
 nv10_clear(struct gl_context *ctx, GLbitfield buffers)
 {
 	struct nouveau_context *nctx = to_nouveau_context(ctx);
 	struct nouveau_pushbuf *push = context_push(ctx);

 	nouveau_validate_framebuffer(ctx);

 	nouveau_pushbuf_bufctx(push, nctx->hw.bufctx);
 	if (nouveau_pushbuf_validate(push)) {
 		nouveau_pushbuf_bufctx(push, NULL);
 		return;
 	}

 	if ((buffers & BUFFER_BIT_DEPTH) && ctx->Depth.Mask) {
 		if (context_chipset(ctx) >= 0x17)
 			nv17_zclear(ctx, &buffers);
 		else
 			nv10_zclear(ctx, &buffers);

 		/* Emit the zclear state if it's dirty */
 		_mesa_update_state(ctx);
 	}

 	nouveau_pushbuf_bufctx(push, NULL);
 	nouveau_clear(ctx, buffers);
 }

 static void
 nv10_hwctx_init(struct gl_context *ctx)
 {
 	struct nouveau_pushbuf *push = context_push(ctx);
 	struct nouveau_hw_state *hw = &to_nouveau_context(ctx)->hw;
 	struct nv04_fifo *fifo = hw->chan->data;
 	int i;

 	BEGIN_NV04(push, NV01_SUBC(3D, OBJECT), 1);
 	PUSH_DATA (push, hw->eng3d->handle);
 	BEGIN_NV04(push, NV10_3D(DMA_NOTIFY), 1);
 	PUSH_DATA (push, hw->ntfy->handle);

 	BEGIN_NV04(push, NV10_3D(DMA_TEXTURE0), 3);
 	PUSH_DATA (push, fifo->vram);
 	PUSH_DATA (push, fifo->gart);
 	PUSH_DATA (push, fifo->gart);
 	BEGIN_NV04(push, NV10_3D(DMA_COLOR), 2);
 	PUSH_DATA (push, fifo->vram);
 	PUSH_DATA (push, fifo->vram);

 	BEGIN_NV04(push, NV04_GRAPH(3D, NOP), 1);
 	PUSH_DATA (push, 0);

 	BEGIN_NV04(push, NV10_3D(RT_HORIZ), 2);
 	PUSH_DATA (push, 0);
 	PUSH_DATA (push, 0);

 	BEGIN_NV04(push, NV10_3D(VIEWPORT_CLIP_HORIZ(0)), 1);
 	PUSH_DATA (push, 0x7ff << 16 | 0x800);
 	BEGIN_NV04(push, NV10_3D(VIEWPORT_CLIP_VERT(0)), 1);
 	PUSH_DATA (push, 0x7ff << 16 | 0x800);

 	for (i = 1; i < 8; i++) {
 		BEGIN_NV04(push, NV10_3D(VIEWPORT_CLIP_HORIZ(i)), 1);
 		PUSH_DATA (push, 0);
 		BEGIN_NV04(push, NV10_3D(VIEWPORT_CLIP_VERT(i)), 1);
 		PUSH_DATA (push, 0);
 	}

 	BEGIN_NV04(push, SUBC_3D(0x290), 1);
 	PUSH_DATA (push, 0x10 << 16 | 1);
 	BEGIN_NV04(push, SUBC_3D(0x3f4), 1);
 	PUSH_DATA (push, 0);

 	BEGIN_NV04(push, NV04_GRAPH(3D, NOP), 1);
 	PUSH_DATA (push, 0);

 	if (context_chipset(ctx) >= 0x17) {
 		BEGIN_NV04(push, NV17_3D(UNK01AC), 2);
 		PUSH_DATA (push, fifo->vram);
 		PUSH_DATA (push, fifo->vram);

 		BEGIN_NV04(push, SUBC_3D(0xd84), 1);
 		PUSH_DATA (push, 0x3);

 		BEGIN_NV04(push, NV17_3D(COLOR_MASK_ENABLE), 1);
 		PUSH_DATA (push, 1);
 	}

 	if (context_chipset(ctx) >= 0x11) {
 		BEGIN_NV04(push, SUBC_3D(0x120), 3);
 		PUSH_DATA (push, 0);
 		PUSH_DATA (push, 1);
 		PUSH_DATA (push, 2);

 		BEGIN_NV04(push, NV04_GRAPH(3D, NOP), 1);
 		PUSH_DATA (push, 0);
 	}

 	BEGIN_NV04(push, NV04_GRAPH(3D, NOP), 1);
 	PUSH_DATA (push, 0);

 	/* Set state */
 	BEGIN_NV04(push, NV10_3D(FOG_ENABLE), 1);
 	PUSH_DATA (push, 0);
 	BEGIN_NV04(push, NV10_3D(ALPHA_FUNC_ENABLE), 1);
 	PUSH_DATA (push, 0);
 	BEGIN_NV04(push, NV10_3D(ALPHA_FUNC_FUNC), 2);
 	PUSH_DATA (push, 0x207);
 	PUSH_DATA (push, 0);
 	BEGIN_NV04(push, NV10_3D(TEX_ENABLE(0)), 2);
 	PUSH_DATA (push, 0);
 	PUSH_DATA (push, 0);

 	BEGIN_NV04(push, NV10_3D(BLEND_FUNC_ENABLE), 1);
 	PUSH_DATA (push, 0);
 	BEGIN_NV04(push, NV10_3D(DITHER_ENABLE), 2);
 	PUSH_DATA (push, 1);
 	PUSH_DATA (push, 0);
 	BEGIN_NV04(push, NV10_3D(LINE_SMOOTH_ENABLE), 1);
 	PUSH_DATA (push, 0);
 	BEGIN_NV04(push, NV10_3D(VERTEX_WEIGHT_ENABLE), 2);
 	PUSH_DATA (push, 0);
 	PUSH_DATA (push, 0);
 	BEGIN_NV04(push, NV10_3D(BLEND_FUNC_SRC), 4);
 	PUSH_DATA (push, 1);
 	PUSH_DATA (push, 0);
 	PUSH_DATA (push, 0);
 	PUSH_DATA (push, 0x8006);
 	BEGIN_NV04(push, NV10_3D(STENCIL_MASK), 8);
 	PUSH_DATA (push, 0xff);
 	PUSH_DATA (push, 0x207);
 	PUSH_DATA (push, 0);
 	PUSH_DATA (push, 0xff);
 	PUSH_DATA (push, 0x1e00);
 	PUSH_DATA (push, 0x1e00);
 	PUSH_DATA (push, 0x1e00);
 	PUSH_DATA (push, 0x1d01);
 	BEGIN_NV04(push, NV10_3D(NORMALIZE_ENABLE), 1);
 	PUSH_DATA (push, 0);
 	BEGIN_NV04(push, NV10_3D(FOG_ENABLE), 2);
 	PUSH_DATA (push, 0);
 	PUSH_DATA (push, 0);
 	BEGIN_NV04(push, NV10_3D(LIGHT_MODEL), 1);
 	PUSH_DATA (push, 0);
 	BEGIN_NV04(push, NV10_3D(SEPARATE_SPECULAR_ENABLE), 1);
 	PUSH_DATA (push, 0);
 	BEGIN_NV04(push, NV10_3D(ENABLED_LIGHTS), 1);
 	PUSH_DATA (push, 0);
 	BEGIN_NV04(push, NV10_3D(POLYGON_OFFSET_POINT_ENABLE), 3);
 	PUSH_DATA (push, 0);
 	PUSH_DATA (push, 0);
 	PUSH_DATA (push, 0);
 	BEGIN_NV04(push, NV10_3D(DEPTH_FUNC), 1);
 	PUSH_DATA (push, 0x201);
 	BEGIN_NV04(push, NV10_3D(DEPTH_WRITE_ENABLE), 1);
 	PUSH_DATA (push, 0);
 	BEGIN_NV04(push, NV10_3D(DEPTH_TEST_ENABLE), 1);
 	PUSH_DATA (push, 0);
 	BEGIN_NV04(push, NV10_3D(POLYGON_OFFSET_FACTOR), 2);
 	PUSH_DATA (push, 0);
 	PUSH_DATA (push, 0);
 	BEGIN_NV04(push, NV10_3D(POINT_SIZE), 1);
 	PUSH_DATA (push, 8);
 	BEGIN_NV04(push, NV10_3D(POINT_PARAMETERS_ENABLE), 2);
 	PUSH_DATA (push, 0);
 	PUSH_DATA (push, 0);
 	BEGIN_NV04(push, NV10_3D(LINE_WIDTH), 1);
 	PUSH_DATA (push, 8);
 	BEGIN_NV04(push, NV10_3D(LINE_SMOOTH_ENABLE), 1);
 	PUSH_DATA (push, 0);
 	BEGIN_NV04(push, NV10_3D(POLYGON_MODE_FRONT), 2);
 	PUSH_DATA (push, 0x1b02);
 	PUSH_DATA (push, 0x1b02);
 	BEGIN_NV04(push, NV10_3D(CULL_FACE), 2);
 	PUSH_DATA (push, 0x405);
 	PUSH_DATA (push, 0x901);
 	BEGIN_NV04(push, NV10_3D(POLYGON_SMOOTH_ENABLE), 1);
 	PUSH_DATA (push, 0);
 	BEGIN_NV04(push, NV10_3D(CULL_FACE_ENABLE), 1);
 	PUSH_DATA (push, 0);
 	BEGIN_NV04(push, NV10_3D(TEX_GEN_MODE(0, 0)), 8);
 	for (i = 0; i < 8; i++)
 		PUSH_DATA (push, 0);

 	BEGIN_NV04(push, NV10_3D(TEX_MATRIX_ENABLE(0)), 2);
 	PUSH_DATA (push, 0);
 	PUSH_DATA (push, 0);
 	BEGIN_NV04(push, NV10_3D(FOG_COEFF(0)), 3);
 	PUSH_DATA (push, 0x3fc00000);	/* -1.50 */
 	PUSH_DATA (push, 0xbdb8aa0a);	/* -0.09 */
 	PUSH_DATA (push, 0);		/*  0.00 */

 	BEGIN_NV04(push, NV04_GRAPH(3D, NOP), 1);
 	PUSH_DATA (push, 0);

 	BEGIN_NV04(push, NV10_3D(FOG_MODE), 2);
 	PUSH_DATA (push, 0x802);
 	PUSH_DATA (push, 2);
 	/* for some reason VIEW_MATRIX_ENABLE need to be 6 instead of 4 when
 	 * using texturing, except when using the texture matrix
 	 */
 	BEGIN_NV04(push, NV10_3D(VIEW_MATRIX_ENABLE), 1);
 	PUSH_DATA (push, 6);
 	BEGIN_NV04(push, NV10_3D(COLOR_MASK), 1);
 	PUSH_DATA (push, 0x01010101);

 	/* Set vertex component */
 	BEGIN_NV04(push, NV10_3D(VERTEX_COL_4F_R), 4);
 	PUSH_DATAf(push, 1.0);
 	PUSH_DATAf(push, 0.0);
 	PUSH_DATAf(push, 0.0);
 	PUSH_DATAf(push, 1.0);
 	BEGIN_NV04(push, NV10_3D(VERTEX_COL2_3F_R), 3);
 	PUSH_DATA (push, 0);
 	PUSH_DATA (push, 0);
 	PUSH_DATA (push, 0);
 	BEGIN_NV04(push, NV10_3D(VERTEX_NOR_3F_X), 3);
 	PUSH_DATA (push, 0);
 	PUSH_DATA (push, 0);
 	PUSH_DATAf(push, 1.0);
 	BEGIN_NV04(push, NV10_3D(VERTEX_TX0_4F_S), 4);
 	PUSH_DATAf(push, 0.0);
 	PUSH_DATAf(push, 0.0);
 	PUSH_DATAf(push, 0.0);
 	PUSH_DATAf(push, 1.0);
 	BEGIN_NV04(push, NV10_3D(VERTEX_TX1_4F_S), 4);
 	PUSH_DATAf(push, 0.0);
 	PUSH_DATAf(push, 0.0);
 	PUSH_DATAf(push, 0.0);
 	PUSH_DATAf(push, 1.0);
 	BEGIN_NV04(push, NV10_3D(VERTEX_FOG_1F), 1);
 	PUSH_DATAf(push, 0.0);
 	BEGIN_NV04(push, NV10_3D(EDGEFLAG_ENABLE), 1);
 	PUSH_DATA (push, 1);

 	BEGIN_NV04(push, NV10_3D(DEPTH_RANGE_NEAR), 2);
 	PUSH_DATAf(push, 0.0);
 	PUSH_DATAf(push, 16777216.0);

 	PUSH_KICK (push);
 }

 static void
 nv10_context_destroy(struct gl_context *ctx)
 {
 	struct nouveau_context *nctx = to_nouveau_context(ctx);

 	nv04_surface_takedown(ctx);
 	nv10_swtnl_destroy(ctx);
 	nv10_vbo_destroy(ctx);

 	nouveau_object_del(&nctx->hw.eng3d);

 	nouveau_context_deinit(ctx);
 	FREE(ctx);
 }

 static struct gl_context *
 nv10_context_create(struct nouveau_screen *screen, const struct gl_config *visual,
 		    struct gl_context *share_ctx)
 {
 	struct nouveau_context *nctx;
 	struct gl_context *ctx;
 	unsigned celsius_class;
 	int ret;

 	nctx = CALLOC_STRUCT(nouveau_context);
 	if (!nctx)
 		return NULL;

 	ctx = &nctx->base;

 	if (!nouveau_context_init(ctx, screen, visual, share_ctx))
 		goto fail;

 	ctx->Extensions.ARB_texture_env_crossbar = true;
 	ctx->Extensions.ARB_texture_env_combine = true;
 	ctx->Extensions.ARB_texture_env_dot3 = true;
 	ctx->Extensions.NV_fog_distance = true;
 	ctx->Extensions.NV_texture_rectangle = true;
 	if (ctx->Mesa_DXTn) {
 		ctx->Extensions.EXT_texture_compression_s3tc = true;
 		ctx->Extensions.S3_s3tc = true;
 	}

 	/* GL constants. */
 	ctx->Const.MaxTextureLevels = 12;
 	ctx->Const.MaxTextureCoordUnits = NV10_TEXTURE_UNITS;
 	ctx->Const.MaxTextureImageUnits = NV10_TEXTURE_UNITS;
 	ctx->Const.MaxTextureUnits = NV10_TEXTURE_UNITS;
 	ctx->Const.MaxTextureMaxAnisotropy = 2;
 	ctx->Const.MaxTextureLodBias = 15;
 	ctx->Driver.Clear = nv10_clear;

 	/* 2D engine. */
 	ret = nv04_surface_init(ctx);
 	if (!ret)
 		goto fail;

 	/* 3D engine. */
 	if (context_chipset(ctx) >= 0x17)
 		celsius_class = NV17_3D_CLASS;
 	else if (context_chipset(ctx) >= 0x11)
 		celsius_class = NV15_3D_CLASS;
 	else
 		celsius_class = NV10_3D_CLASS;

 	ret = nouveau_object_new(context_chan(ctx), 0xbeef0001, celsius_class,
 				 NULL, 0, &nctx->hw.eng3d);
 	if (ret)
 		goto fail;

 	nv10_hwctx_init(ctx);
 	nv10_vbo_init(ctx);
 	nv10_swtnl_init(ctx);

 	return ctx;

 fail:
 	nv10_context_destroy(ctx);
 	return NULL;
 }

 const struct nouveau_driver nv10_driver = {
 	.context_create = nv10_context_create,
 	.context_destroy = nv10_context_destroy,
 	.surface_copy = nv04_surface_copy,
 	.surface_fill = nv04_surface_fill,
 	.emit = (nouveau_state_func[]) {
 		nv10_emit_alpha_func,
 		nv10_emit_blend_color,
 		nv10_emit_blend_equation,
 		nv10_emit_blend_func,
 		nv10_emit_clip_plane,
 		nv10_emit_clip_plane,
 		nv10_emit_clip_plane,
 		nv10_emit_clip_plane,
 		nv10_emit_clip_plane,
 		nv10_emit_clip_plane,
 		nv10_emit_color_mask,
 		nv10_emit_color_material,
 		nv10_emit_cull_face,
 		nv10_emit_front_face,
 		nv10_emit_depth,
 		nv10_emit_dither,
 		nv10_emit_frag,
 		nv10_emit_framebuffer,
 		nv10_emit_fog,
 		nv10_emit_light_enable,
 		nv10_emit_light_model,
 		nv10_emit_light_source,
 		nv10_emit_light_source,
 		nv10_emit_light_source,
 		nv10_emit_light_source,
 		nv10_emit_light_source,
 		nv10_emit_light_source,
 		nv10_emit_light_source,
 		nv10_emit_light_source,
 		nv10_emit_line_stipple,
 		nv10_emit_line_mode,
 		nv10_emit_logic_opcode,
 		nv10_emit_material_ambient,
 		nouveau_emit_nothing,
 		nv10_emit_material_diffuse,
 		nouveau_emit_nothing,
 		nv10_emit_material_specular,
 		nouveau_emit_nothing,
 		nv10_emit_material_shininess,
 		nouveau_emit_nothing,
 		nv10_emit_modelview,
 		nv10_emit_point_mode,
 		nv10_emit_point_parameter,
 		nv10_emit_polygon_mode,
 		nv10_emit_polygon_offset,
 		nv10_emit_polygon_stipple,
 		nv10_emit_projection,
 		nv10_emit_render_mode,
 		nv10_emit_scissor,
 		nv10_emit_shade_model,
 		nv10_emit_stencil_func,
 		nv10_emit_stencil_mask,
 		nv10_emit_stencil_op,
 		nv10_emit_tex_env,
 		nv10_emit_tex_env,
 		nouveau_emit_nothing,
 		nouveau_emit_nothing,
 		nv10_emit_tex_gen,
 		nv10_emit_tex_gen,
 		nouveau_emit_nothing,
 		nouveau_emit_nothing,
 		nv10_emit_tex_mat,
 		nv10_emit_tex_mat,
 		nouveau_emit_nothing,
 		nouveau_emit_nothing,
 		nv10_emit_tex_obj,
 		nv10_emit_tex_obj,
 		nouveau_emit_nothing,
 		nouveau_emit_nothing,
 		nv10_emit_viewport,
 		nv10_emit_zclear
 	},
 	.num_emit = NUM_NV10_STATE,
 };
	/*
	* Copyright (C) 2009-2010 Francisco Jerez.
	* All Rights Reserved.
	*
	* 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 (including the
	* next paragraph) 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 COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS 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 <stdbool.h>
	#include "main/state.h"
	#include "nouveau_driver.h"
	#include "nouveau_context.h"
	#include "nouveau_fbo.h"
	#include "nouveau_util.h"
	#include "nv_object.xml.h"
	#include "nv10_3d.xml.h"
	#include "nv04_driver.h"
	#include "nv10_driver.h"

	static GLboolean
	use_fast_zclear(struct gl_context *ctx, GLbitfield buffers)
	{
	struct nouveau_context *nctx = to_nouveau_context(ctx);
	struct gl_framebuffer *fb = ctx->DrawBuffer;

	if (buffers & BUFFER_BIT_STENCIL) {
	/*
	* The stencil test is bypassed when fast Z clears are
	* enabled.
	*/
	nctx->hierz.clear_blocked = GL_TRUE;
	context_dirty(ctx, ZCLEAR);
	return GL_FALSE;
	}

	return !nctx->hierz.clear_blocked &&
	fb->_Xmax == fb->Width && fb->_Xmin == 0 &&
	fb->_Ymax == fb->Height && fb->_Ymin == 0;
	}

	GLboolean
	nv10_use_viewport_zclear(struct gl_context *ctx)
	{
	struct nouveau_context *nctx = to_nouveau_context(ctx);
	struct gl_framebuffer *fb = ctx->DrawBuffer;
	struct gl_renderbuffer *depthRb = fb->Attachment[BUFFER_DEPTH].Renderbuffer;

	return context_chipset(ctx) < 0x17 &&
	!nctx->hierz.clear_blocked && depthRb &&
	(_mesa_get_format_bits(depthRb->Format,
	GL_DEPTH_BITS) >= 24);
	}

	float
	nv10_transform_depth(struct gl_context *ctx, float z)
	{
	struct nouveau_context *nctx = to_nouveau_context(ctx);

	if (nv10_use_viewport_zclear(ctx))
	return 2097152.0 * (z + (nctx->hierz.clear_seq & 7));
	else
	return ctx->DrawBuffer->_DepthMaxF * z;
	}

	static void
	nv10_zclear(struct gl_context ctx, GLbitfield buffers)
	{
	/*
	* Pre-nv17 cards don't have native support for fast Z clears,
	* but in some cases we can still "clear" the Z buffer without
	* actually blitting to it if we're willing to sacrifice a few
	* bits of depth precision.
	*
	* Each time a clear is requested we modify the viewport
	* transform in such a way that the old contents of the depth
	* buffer are clamped to the requested clear value when
	* they're read by the GPU.
	*/
	struct nouveau_context *nctx = to_nouveau_context(ctx);
	struct gl_framebuffer *fb = ctx->DrawBuffer;
	struct nouveau_framebuffer *nfb = to_nouveau_framebuffer(fb);
	struct nouveau_surface *s = &to_nouveau_renderbuffer(
	fb->Attachment[BUFFER_DEPTH].Renderbuffer)->surface;

	if (nv10_use_viewport_zclear(ctx)) {
	int x, y, w, h;
	float z = ctx->Depth.Clear;
	uint32_t value = pack_zs_f(s->format, z, 0);

	get_scissors(fb, &x, &y, &w, &h);
	*buffers &= ~BUFFER_BIT_DEPTH;

	if (use_fast_zclear(ctx, *buffers)) {
	if (nfb->hierz.clear_value != value) {
	/* Don't fast clear if we're changing
	* the depth value. */
	nfb->hierz.clear_value = value;

	} else if (z == 0.0) {
	nctx->hierz.clear_seq++;
	context_dirty(ctx, ZCLEAR);

	if ((nctx->hierz.clear_seq & 7) != 0 &&
	nctx->hierz.clear_seq != 1)
	/* We didn't wrap around -- no need to
	* clear the depth buffer for real. */
	return;

	} else if (z == 1.0) {
	nctx->hierz.clear_seq--;
	context_dirty(ctx, ZCLEAR);

	if ((nctx->hierz.clear_seq & 7) != 7)
	/* No wrap around */
	return;
	}
	}

	value = pack_zs_f(s->format,
	(z + (nctx->hierz.clear_seq & 7)) / 8, 0);
	context_drv(ctx)->surface_fill(ctx, s, ~0, value, x, y, w, h);
	}
	}

	static void
	nv17_zclear(struct gl_context ctx, GLbitfield buffers)
	{
	struct nouveau_context *nctx = to_nouveau_context(ctx);
	struct nouveau_pushbuf *push = context_push(ctx);
	struct nouveau_framebuffer *nfb = to_nouveau_framebuffer(
	ctx->DrawBuffer);
	struct nouveau_surface *s = &to_nouveau_renderbuffer(
	nfb->base.Attachment[BUFFER_DEPTH].Renderbuffer)->surface;

	/* Clear the hierarchical depth buffer */
	BEGIN_NV04(push, NV17_3D(HIERZ_FILL_VALUE), 1);
	PUSH_DATA (push, pack_zs_f(s->format, ctx->Depth.Clear, 0));
	BEGIN_NV04(push, NV17_3D(HIERZ_BUFFER_CLEAR), 1);
	PUSH_DATA (push, 1);

	/* Mark the depth buffer as cleared */
	if (use_fast_zclear(ctx, *buffers)) {
	if (nctx->hierz.clear_seq)
	*buffers &= ~BUFFER_BIT_DEPTH;

	nfb->hierz.clear_value =
	pack_zs_f(s->format, ctx->Depth.Clear, 0);
	nctx->hierz.clear_seq++;

	context_dirty(ctx, ZCLEAR);
	}
	}

	static void
	nv10_clear(struct gl_context *ctx, GLbitfield buffers)
	{
	struct nouveau_context *nctx = to_nouveau_context(ctx);
	struct nouveau_pushbuf *push = context_push(ctx);

	nouveau_validate_framebuffer(ctx);

	nouveau_pushbuf_bufctx(push, nctx->hw.bufctx);
	if (nouveau_pushbuf_validate(push)) {
	nouveau_pushbuf_bufctx(push, NULL);
	return;
	}

	if ((buffers & BUFFER_BIT_DEPTH) && ctx->Depth.Mask) {
	if (context_chipset(ctx) >= 0x17)
	nv17_zclear(ctx, &buffers);
	else
	nv10_zclear(ctx, &buffers);

	/* Emit the zclear state if it's dirty */
	_mesa_update_state(ctx);
	}

	nouveau_pushbuf_bufctx(push, NULL);
	nouveau_clear(ctx, buffers);
	}

	static void
	nv10_hwctx_init(struct gl_context *ctx)
	{
	struct nouveau_pushbuf *push = context_push(ctx);
	struct nouveau_hw_state *hw = &to_nouveau_context(ctx)->hw;
	struct nv04_fifo *fifo = hw->chan->data;
	int i;

	BEGIN_NV04(push, NV01_SUBC(3D, OBJECT), 1);
	PUSH_DATA (push, hw->eng3d->handle);
	BEGIN_NV04(push, NV10_3D(DMA_NOTIFY), 1);
	PUSH_DATA (push, hw->ntfy->handle);

	BEGIN_NV04(push, NV10_3D(DMA_TEXTURE0), 3);
	PUSH_DATA (push, fifo->vram);
	PUSH_DATA (push, fifo->gart);
	PUSH_DATA (push, fifo->gart);
	BEGIN_NV04(push, NV10_3D(DMA_COLOR), 2);
	PUSH_DATA (push, fifo->vram);
	PUSH_DATA (push, fifo->vram);

	BEGIN_NV04(push, NV04_GRAPH(3D, NOP), 1);
	PUSH_DATA (push, 0);

	BEGIN_NV04(push, NV10_3D(RT_HORIZ), 2);
	PUSH_DATA (push, 0);
	PUSH_DATA (push, 0);

	BEGIN_NV04(push, NV10_3D(VIEWPORT_CLIP_HORIZ(0)), 1);
	PUSH_DATA (push, 0x7ff << 16 \| 0x800);
	BEGIN_NV04(push, NV10_3D(VIEWPORT_CLIP_VERT(0)), 1);
	PUSH_DATA (push, 0x7ff << 16 \| 0x800);

	for (i = 1; i < 8; i++) {
	BEGIN_NV04(push, NV10_3D(VIEWPORT_CLIP_HORIZ(i)), 1);
	PUSH_DATA (push, 0);
	BEGIN_NV04(push, NV10_3D(VIEWPORT_CLIP_VERT(i)), 1);
	PUSH_DATA (push, 0);
	}

	BEGIN_NV04(push, SUBC_3D(0x290), 1);
	PUSH_DATA (push, 0x10 << 16 \| 1);
	BEGIN_NV04(push, SUBC_3D(0x3f4), 1);
	PUSH_DATA (push, 0);

	BEGIN_NV04(push, NV04_GRAPH(3D, NOP), 1);
	PUSH_DATA (push, 0);

	if (context_chipset(ctx) >= 0x17) {
	BEGIN_NV04(push, NV17_3D(UNK01AC), 2);
	PUSH_DATA (push, fifo->vram);
	PUSH_DATA (push, fifo->vram);

	BEGIN_NV04(push, SUBC_3D(0xd84), 1);
	PUSH_DATA (push, 0x3);

	BEGIN_NV04(push, NV17_3D(COLOR_MASK_ENABLE), 1);
	PUSH_DATA (push, 1);
	}

	if (context_chipset(ctx) >= 0x11) {
	BEGIN_NV04(push, SUBC_3D(0x120), 3);
	PUSH_DATA (push, 0);
	PUSH_DATA (push, 1);
	PUSH_DATA (push, 2);

	BEGIN_NV04(push, NV04_GRAPH(3D, NOP), 1);
	PUSH_DATA (push, 0);
	}

	BEGIN_NV04(push, NV04_GRAPH(3D, NOP), 1);
	PUSH_DATA (push, 0);

	/* Set state */
	BEGIN_NV04(push, NV10_3D(FOG_ENABLE), 1);
	PUSH_DATA (push, 0);
	BEGIN_NV04(push, NV10_3D(ALPHA_FUNC_ENABLE), 1);
	PUSH_DATA (push, 0);
	BEGIN_NV04(push, NV10_3D(ALPHA_FUNC_FUNC), 2);
	PUSH_DATA (push, 0x207);
	PUSH_DATA (push, 0);
	BEGIN_NV04(push, NV10_3D(TEX_ENABLE(0)), 2);
	PUSH_DATA (push, 0);
	PUSH_DATA (push, 0);

	BEGIN_NV04(push, NV10_3D(BLEND_FUNC_ENABLE), 1);
	PUSH_DATA (push, 0);
	BEGIN_NV04(push, NV10_3D(DITHER_ENABLE), 2);
	PUSH_DATA (push, 1);
	PUSH_DATA (push, 0);
	BEGIN_NV04(push, NV10_3D(LINE_SMOOTH_ENABLE), 1);
	PUSH_DATA (push, 0);
	BEGIN_NV04(push, NV10_3D(VERTEX_WEIGHT_ENABLE), 2);
	PUSH_DATA (push, 0);
	PUSH_DATA (push, 0);
	BEGIN_NV04(push, NV10_3D(BLEND_FUNC_SRC), 4);
	PUSH_DATA (push, 1);
	PUSH_DATA (push, 0);
	PUSH_DATA (push, 0);
	PUSH_DATA (push, 0x8006);
	BEGIN_NV04(push, NV10_3D(STENCIL_MASK), 8);
	PUSH_DATA (push, 0xff);
	PUSH_DATA (push, 0x207);
	PUSH_DATA (push, 0);
	PUSH_DATA (push, 0xff);
	PUSH_DATA (push, 0x1e00);
	PUSH_DATA (push, 0x1e00);
	PUSH_DATA (push, 0x1e00);
	PUSH_DATA (push, 0x1d01);
	BEGIN_NV04(push, NV10_3D(NORMALIZE_ENABLE), 1);
	PUSH_DATA (push, 0);
	BEGIN_NV04(push, NV10_3D(FOG_ENABLE), 2);
	PUSH_DATA (push, 0);
	PUSH_DATA (push, 0);
	BEGIN_NV04(push, NV10_3D(LIGHT_MODEL), 1);
	PUSH_DATA (push, 0);
	BEGIN_NV04(push, NV10_3D(SEPARATE_SPECULAR_ENABLE), 1);
	PUSH_DATA (push, 0);
	BEGIN_NV04(push, NV10_3D(ENABLED_LIGHTS), 1);
	PUSH_DATA (push, 0);
	BEGIN_NV04(push, NV10_3D(POLYGON_OFFSET_POINT_ENABLE), 3);
	PUSH_DATA (push, 0);
	PUSH_DATA (push, 0);
	PUSH_DATA (push, 0);
	BEGIN_NV04(push, NV10_3D(DEPTH_FUNC), 1);
	PUSH_DATA (push, 0x201);
	BEGIN_NV04(push, NV10_3D(DEPTH_WRITE_ENABLE), 1);
	PUSH_DATA (push, 0);
	BEGIN_NV04(push, NV10_3D(DEPTH_TEST_ENABLE), 1);
	PUSH_DATA (push, 0);
	BEGIN_NV04(push, NV10_3D(POLYGON_OFFSET_FACTOR), 2);
	PUSH_DATA (push, 0);
	PUSH_DATA (push, 0);
	BEGIN_NV04(push, NV10_3D(POINT_SIZE), 1);
	PUSH_DATA (push, 8);
	BEGIN_NV04(push, NV10_3D(POINT_PARAMETERS_ENABLE), 2);
	PUSH_DATA (push, 0);
	PUSH_DATA (push, 0);
	BEGIN_NV04(push, NV10_3D(LINE_WIDTH), 1);
	PUSH_DATA (push, 8);
	BEGIN_NV04(push, NV10_3D(LINE_SMOOTH_ENABLE), 1);
	PUSH_DATA (push, 0);
	BEGIN_NV04(push, NV10_3D(POLYGON_MODE_FRONT), 2);
	PUSH_DATA (push, 0x1b02);
	PUSH_DATA (push, 0x1b02);
	BEGIN_NV04(push, NV10_3D(CULL_FACE), 2);
	PUSH_DATA (push, 0x405);
	PUSH_DATA (push, 0x901);
	BEGIN_NV04(push, NV10_3D(POLYGON_SMOOTH_ENABLE), 1);
	PUSH_DATA (push, 0);
	BEGIN_NV04(push, NV10_3D(CULL_FACE_ENABLE), 1);
	PUSH_DATA (push, 0);
	BEGIN_NV04(push, NV10_3D(TEX_GEN_MODE(0, 0)), 8);
	for (i = 0; i < 8; i++)
	PUSH_DATA (push, 0);

	BEGIN_NV04(push, NV10_3D(TEX_MATRIX_ENABLE(0)), 2);
	PUSH_DATA (push, 0);
	PUSH_DATA (push, 0);
	BEGIN_NV04(push, NV10_3D(FOG_COEFF(0)), 3);
	PUSH_DATA (push, 0x3fc00000); /* -1.50 */
	PUSH_DATA (push, 0xbdb8aa0a); /* -0.09 */
	PUSH_DATA (push, 0); /* 0.00 */

	BEGIN_NV04(push, NV04_GRAPH(3D, NOP), 1);
	PUSH_DATA (push, 0);

	BEGIN_NV04(push, NV10_3D(FOG_MODE), 2);
	PUSH_DATA (push, 0x802);
	PUSH_DATA (push, 2);
	/* for some reason VIEW_MATRIX_ENABLE need to be 6 instead of 4 when
	* using texturing, except when using the texture matrix
	*/
	BEGIN_NV04(push, NV10_3D(VIEW_MATRIX_ENABLE), 1);
	PUSH_DATA (push, 6);
	BEGIN_NV04(push, NV10_3D(COLOR_MASK), 1);
	PUSH_DATA (push, 0x01010101);

	/* Set vertex component */
	BEGIN_NV04(push, NV10_3D(VERTEX_COL_4F_R), 4);
	PUSH_DATAf(push, 1.0);
	PUSH_DATAf(push, 0.0);
	PUSH_DATAf(push, 0.0);
	PUSH_DATAf(push, 1.0);
	BEGIN_NV04(push, NV10_3D(VERTEX_COL2_3F_R), 3);
	PUSH_DATA (push, 0);
	PUSH_DATA (push, 0);
	PUSH_DATA (push, 0);
	BEGIN_NV04(push, NV10_3D(VERTEX_NOR_3F_X), 3);
	PUSH_DATA (push, 0);
	PUSH_DATA (push, 0);
	PUSH_DATAf(push, 1.0);
	BEGIN_NV04(push, NV10_3D(VERTEX_TX0_4F_S), 4);
	PUSH_DATAf(push, 0.0);
	PUSH_DATAf(push, 0.0);
	PUSH_DATAf(push, 0.0);
	PUSH_DATAf(push, 1.0);
	BEGIN_NV04(push, NV10_3D(VERTEX_TX1_4F_S), 4);
	PUSH_DATAf(push, 0.0);
	PUSH_DATAf(push, 0.0);
	PUSH_DATAf(push, 0.0);
	PUSH_DATAf(push, 1.0);
	BEGIN_NV04(push, NV10_3D(VERTEX_FOG_1F), 1);
	PUSH_DATAf(push, 0.0);
	BEGIN_NV04(push, NV10_3D(EDGEFLAG_ENABLE), 1);
	PUSH_DATA (push, 1);

	BEGIN_NV04(push, NV10_3D(DEPTH_RANGE_NEAR), 2);
	PUSH_DATAf(push, 0.0);
	PUSH_DATAf(push, 16777216.0);

	PUSH_KICK (push);
	}

	static void
	nv10_context_destroy(struct gl_context *ctx)
	{
	struct nouveau_context *nctx = to_nouveau_context(ctx);

	nv04_surface_takedown(ctx);
	nv10_swtnl_destroy(ctx);
	nv10_vbo_destroy(ctx);

	nouveau_object_del(&nctx->hw.eng3d);

	nouveau_context_deinit(ctx);
	FREE(ctx);
	}

	static struct gl_context *
	nv10_context_create(struct nouveau_screen screen, const struct gl_config visual,
	struct gl_context *share_ctx)
	{
	struct nouveau_context *nctx;
	struct gl_context *ctx;
	unsigned celsius_class;
	int ret;

	nctx = CALLOC_STRUCT(nouveau_context);
	if (!nctx)
	return NULL;

	ctx = &nctx->base;

	if (!nouveau_context_init(ctx, screen, visual, share_ctx))
	goto fail;

	ctx->Extensions.ARB_texture_env_crossbar = true;
	ctx->Extensions.ARB_texture_env_combine = true;
	ctx->Extensions.ARB_texture_env_dot3 = true;
	ctx->Extensions.NV_fog_distance = true;
	ctx->Extensions.NV_texture_rectangle = true;
	if (ctx->Mesa_DXTn) {
	ctx->Extensions.EXT_texture_compression_s3tc = true;
	ctx->Extensions.S3_s3tc = true;
	}

	/* GL constants. */
	ctx->Const.MaxTextureLevels = 12;
	ctx->Const.MaxTextureCoordUnits = NV10_TEXTURE_UNITS;
	ctx->Const.MaxTextureImageUnits = NV10_TEXTURE_UNITS;
	ctx->Const.MaxTextureUnits = NV10_TEXTURE_UNITS;
	ctx->Const.MaxTextureMaxAnisotropy = 2;
	ctx->Const.MaxTextureLodBias = 15;
	ctx->Driver.Clear = nv10_clear;

	/* 2D engine. */
	ret = nv04_surface_init(ctx);
	if (!ret)
	goto fail;

	/* 3D engine. */
	if (context_chipset(ctx) >= 0x17)
	celsius_class = NV17_3D_CLASS;
	else if (context_chipset(ctx) >= 0x11)
	celsius_class = NV15_3D_CLASS;
	else
	celsius_class = NV10_3D_CLASS;

	ret = nouveau_object_new(context_chan(ctx), 0xbeef0001, celsius_class,
	NULL, 0, &nctx->hw.eng3d);
	if (ret)
	goto fail;

	nv10_hwctx_init(ctx);
	nv10_vbo_init(ctx);
	nv10_swtnl_init(ctx);

	return ctx;

	fail:
	nv10_context_destroy(ctx);
	return NULL;
	}

	const struct nouveau_driver nv10_driver = {
	.context_create = nv10_context_create,
	.context_destroy = nv10_context_destroy,
	.surface_copy = nv04_surface_copy,
	.surface_fill = nv04_surface_fill,
	.emit = (nouveau_state_func[]) {
	nv10_emit_alpha_func,
	nv10_emit_blend_color,
	nv10_emit_blend_equation,
	nv10_emit_blend_func,
	nv10_emit_clip_plane,
	nv10_emit_clip_plane,
	nv10_emit_clip_plane,
	nv10_emit_clip_plane,
	nv10_emit_clip_plane,
	nv10_emit_clip_plane,
	nv10_emit_color_mask,
	nv10_emit_color_material,
	nv10_emit_cull_face,
	nv10_emit_front_face,
	nv10_emit_depth,
	nv10_emit_dither,
	nv10_emit_frag,
	nv10_emit_framebuffer,
	nv10_emit_fog,
	nv10_emit_light_enable,
	nv10_emit_light_model,
	nv10_emit_light_source,
	nv10_emit_light_source,
	nv10_emit_light_source,
	nv10_emit_light_source,
	nv10_emit_light_source,
	nv10_emit_light_source,
	nv10_emit_light_source,
	nv10_emit_light_source,
	nv10_emit_line_stipple,
	nv10_emit_line_mode,
	nv10_emit_logic_opcode,
	nv10_emit_material_ambient,
	nouveau_emit_nothing,
	nv10_emit_material_diffuse,
	nouveau_emit_nothing,
	nv10_emit_material_specular,
	nouveau_emit_nothing,
	nv10_emit_material_shininess,
	nouveau_emit_nothing,
	nv10_emit_modelview,
	nv10_emit_point_mode,
	nv10_emit_point_parameter,
	nv10_emit_polygon_mode,
	nv10_emit_polygon_offset,
	nv10_emit_polygon_stipple,
	nv10_emit_projection,
	nv10_emit_render_mode,
	nv10_emit_scissor,
	nv10_emit_shade_model,
	nv10_emit_stencil_func,
	nv10_emit_stencil_mask,
	nv10_emit_stencil_op,
	nv10_emit_tex_env,
	nv10_emit_tex_env,
	nouveau_emit_nothing,
	nouveau_emit_nothing,
	nv10_emit_tex_gen,
	nv10_emit_tex_gen,
	nouveau_emit_nothing,
	nouveau_emit_nothing,
	nv10_emit_tex_mat,
	nv10_emit_tex_mat,
	nouveau_emit_nothing,
	nouveau_emit_nothing,
	nv10_emit_tex_obj,
	nv10_emit_tex_obj,
	nouveau_emit_nothing,
	nouveau_emit_nothing,
	nv10_emit_viewport,
	nv10_emit_zclear
	},
	.num_emit = NUM_NV10_STATE,
	};