Initial revision

1 files changed, 738 insertions, 0 deletions

diff --git a/src/mesa/drivers/dri/nouveau/nv40_tris.c b/src/mesa/drivers/dri/nouveau/nv40_tris.c
new file mode 100644
index 0000000000..6550928c2f
--- /dev/null
+++ b/src/mesa/drivers/dri/nouveau/nv40_tris.c
@@ -0,0 +1,738 @@
+/*
+ * Copyright 1998-2003 VIA Technologies, Inc. All Rights Reserved.
+ * Copyright 2001-2003 S3 Graphics, Inc. All Rights Reserved.
+ * Copyright 2006 Stephane Marchesin. 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, sub license,
+ * 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 NON-INFRINGEMENT. IN NO EVENT SHALL
+ * VIA, S3 GRAPHICS, 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 <stdio.h>
+#include <math.h>
+
+#include "glheader.h"
+#include "context.h"
+#include "mtypes.h"
+#include "macros.h"
+#include "colormac.h"
+#include "enums.h"
+
+#include "swrast/swrast.h"
+#include "swrast_setup/swrast_setup.h"
+#include "tnl/t_context.h"
+#include "tnl/t_pipeline.h"
+
+#include "nouveau_tris.h"
+#include "nv40_tris.h"
+#include "nouveau_context.h"
+#include "nouveau_state.h"
+#include "nouveau_span.h"
+#include "nouveau_ioctl.h"
+#include "nouveau_3d_reg.h"
+#include "nouveau_tex.h"
+
+/* hack for now */
+#define channel 1
+
+
+/***********************************************************************
+ *                    Emit primitives as inline vertices               *
+ ***********************************************************************/
+#define LINE_FALLBACK (0)
+#define POINT_FALLBACK (0)
+#define TRI_FALLBACK (0)
+#define ANY_FALLBACK_FLAGS (POINT_FALLBACK|LINE_FALLBACK|TRI_FALLBACK)
+#define ANY_RASTER_FLAGS (DD_TRI_LIGHT_TWOSIDE|DD_TRI_OFFSET|DD_TRI_UNFILLED)
+
+
+#define COPY_DWORDS(vb, vertsize, v)		\
+	do {					\
+		int j;					\
+		for (j = 0; j < vertsize; j++)		\
+		vb[j] = ((GLuint *)v)[j];		\
+		vb += vertsize;				\
+	} while (0)
+#endif
+
+/* the free room we want before we start a vertex batch */
+#define NV40_MIN_PRIM_SIZE (32/4)
+
+static inline void nv40StartPrimitive(struct nouveau_context* nmesa)
+{
+	BEGIN_RING_SIZE(channel,0x1808,1);
+	OUT_RING(nmesa->current_primitive);
+	BEGIN_RING_PRIM(channel,0x1818,NV40_MIN_PRIM_SIZE);
+}
+
+static inline void nv40FinishPrimitive(struct nouveau_context *nmesa)
+{
+	FINISH_RING_PRIM();
+	BEGIN_RING_SIZE(channel,0x1808,1);
+	OUT_RING(0x0);
+	FIRE_RING();
+}
+
+
+static inline void nv40ExtendPrimitive(struct nouveau_context* nmesa, int size)
+{
+	/* when the fifo has enough stuff (2048 bytes) or there is not enough room, fire */
+	if ((RING_AHEAD()>=2048/4)||(RING_AVAILABLE()<size/4))
+	{
+		nv40FinishPrimitive(nmesa);
+		nv40StartPrimitive(nmesa);
+	}
+
+	/* make sure there's enough room. if not, wait */
+	if (RING_AVAILABLE()<size/4)
+	{
+		WAIT_RING(nmesa,size);
+	}
+}
+
+static inline void nv40_draw_quad(struct nouveau_context *nmesa,
+		nouveauVertexPtr v0,
+		nouveauVertexPtr v1,
+		nouveauVertexPtr v2,
+		nouveauVertexPtr v3)
+{
+	GLuint vertsize = nmesa->vertexSize;
+	GLuint *vb = nv40ExtendPrimitive(nmesa, 4 * 4 * vertsize);
+
+	COPY_DWORDS(vb, vertsize, v0);
+	COPY_DWORDS(vb, vertsize, v1);
+	COPY_DWORDS(vb, vertsize, v2);
+	COPY_DWORDS(vb, vertsize, v3);
+}
+
+static inline void nv40_draw_triangle(struct nouveau_context *nmesa,
+		nouveauVertexPtr v0,
+		nouveauVertexPtr v1,
+		nouveauVertexPtr v2)
+{
+	GLuint vertsize = nmesa->vertexSize;
+	GLuint *vb = nv40ExtendPrimitive(nmesa, 3 * 4 * vertsize);
+
+	COPY_DWORDS(vb, vertsize, v0);
+	COPY_DWORDS(vb, vertsize, v1);
+	COPY_DWORDS(vb, vertsize, v2);
+}
+
+static inline void nouveau_draw_line(struct nouveau_context *nmesa,
+		nouveauVertexPtr v0,
+		nouveauVertexPtr v1)
+{
+	GLuint vertsize = nmesa->vertexSize;
+	GLuint *vb = nv40ExtendPrimitive(nmesa, 2 * 4 * vertsize);
+	COPY_DWORDS(vb, vertsize, v0);
+	COPY_DWORDS(vb, vertsize, v1);
+}
+
+static inline void nouveau_draw_point(struct nouveau_context *nmesa,
+		nouveauVertexPtr v0)
+{
+	GLuint vertsize = nmesa->vertexSize;
+	GLuint *vb = nv40ExtendPrimitive(nmesa, 4 * vertsize);
+	COPY_DWORDS(vb, vertsize, v0);
+}
+
+
+/***********************************************************************
+ *          Macros for nouveau_dd_tritmp.h to draw basic primitives        *
+ ***********************************************************************/
+
+#define TRI(a, b, c)                                \
+	do {                                            \
+		if (DO_FALLBACK)                            \
+		nmesa->draw_tri(nmesa, a, b, c);         \
+		else                                        \
+		nouveau_draw_triangle(nmesa, a, b, c);      \
+	} while (0)
+
+#define QUAD(a, b, c, d)                            \
+	do {                                            \
+		if (DO_FALLBACK) {                          \
+			nmesa->draw_tri(nmesa, a, b, d);         \
+			nmesa->draw_tri(nmesa, b, c, d);         \
+		}                                           \
+		else                                        \
+		nouveau_draw_quad(nmesa, a, b, c, d);       \
+	} while (0)
+
+#define LINE(v0, v1)                                \
+	do {                                            \
+		if (DO_FALLBACK)                            \
+		nmesa->draw_line(nmesa, v0, v1);         \
+		else                                        \
+		nouveau_draw_line(nmesa, v0, v1);           \
+	} while (0)
+
+#define POINT(v0)                                    \
+	do {                                             \
+		if (DO_FALLBACK)                             \
+		nmesa->draw_point(nmesa, v0);             \
+		else                                         \
+		nouveau_draw_point(nmesa, v0);               \
+	} while (0)
+
+
+/***********************************************************************
+ *              Build render functions from dd templates               *
+ ***********************************************************************/
+
+#define NOUVEAU_OFFSET_BIT         0x01
+#define NOUVEAU_TWOSIDE_BIT        0x02
+#define NOUVEAU_UNFILLED_BIT       0x04
+#define NOUVEAU_FALLBACK_BIT       0x08
+#define NOUVEAU_MAX_TRIFUNC        0x10
+
+
+static struct {
+	tnl_points_func          points;
+	tnl_line_func            line;
+	tnl_triangle_func        triangle;
+	tnl_quad_func            quad;
+} rast_tab[NOUVEAU_MAX_TRIFUNC + 1];
+
+
+#define DO_FALLBACK (IND & NOUVEAU_FALLBACK_BIT)
+#define DO_OFFSET   (IND & NOUVEAU_OFFSET_BIT)
+#define DO_UNFILLED (IND & NOUVEAU_UNFILLED_BIT)
+#define DO_TWOSIDE  (IND & NOUVEAU_TWOSIDE_BIT)
+#define DO_FLAT      0
+#define DO_TRI       1
+#define DO_QUAD      1
+#define DO_LINE      1
+#define DO_POINTS    1
+#define DO_FULL_QUAD 1
+
+#define HAVE_RGBA         1
+#define HAVE_SPEC         1
+#define HAVE_BACK_COLORS  0
+#define HAVE_HW_FLATSHADE 1
+#define VERTEX            nouveauVertex
+#define TAB               rast_tab
+
+/* Only used to pull back colors into vertices (ie, we know color is
+ * floating point).
+ */
+#define NOUVEAU_COLOR(dst, src)                     \
+	do {                                        \
+		dst[0] = src[2];                        \
+		dst[1] = src[1];                        \
+		dst[2] = src[0];                        \
+		dst[3] = src[3];                        \
+	} while (0)
+
+#define NOUVEAU_SPEC(dst, src)                      \
+	do {                                        \
+		dst[0] = src[2];                        \
+		dst[1] = src[1];                        \
+		dst[2] = src[0];                        \
+	} while (0)
+
+
+#define DEPTH_SCALE nmesa->polygon_offset_scale
+#define UNFILLED_TRI unfilled_tri
+#define UNFILLED_QUAD unfilled_quad
+#define VERT_X(_v) _v->v.x
+#define VERT_Y(_v) _v->v.y
+#define VERT_Z(_v) _v->v.z
+#define AREA_IS_CCW(a) (a > 0)
+#define GET_VERTEX(e) (nmesa->verts + (e * nmesa->vertexSize * sizeof(int)))
+
+#define VERT_SET_RGBA( v, c )  					\
+	do {								\
+		nouveau_color_t *color = (nouveau_color_t *)&((v)->ui[coloroffset]);	\
+		UNCLAMPED_FLOAT_TO_UBYTE(color->red, (c)[0]);		\
+		UNCLAMPED_FLOAT_TO_UBYTE(color->green, (c)[1]);		\
+		UNCLAMPED_FLOAT_TO_UBYTE(color->blue, (c)[2]);		\
+		UNCLAMPED_FLOAT_TO_UBYTE(color->alpha, (c)[3]);		\
+	} while (0)
+
+#define VERT_COPY_RGBA( v0, v1 ) v0->ui[coloroffset] = v1->ui[coloroffset]
+
+#define VERT_SET_SPEC( v, c )					\
+	do {								\
+		if (specoffset) {						\
+			nouveau_color_t *color = (nouveau_color_t *)&((v)->ui[specoffset]);	\
+			UNCLAMPED_FLOAT_TO_UBYTE(color->red, (c)[0]);		\
+			UNCLAMPED_FLOAT_TO_UBYTE(color->green, (c)[1]);		\
+			UNCLAMPED_FLOAT_TO_UBYTE(color->blue, (c)[2]);		\
+		}								\
+	} while (0)
+#define VERT_COPY_SPEC( v0, v1 )			\
+	do {							\
+		if (specoffset) {					\
+			v0->ub4[specoffset][0] = v1->ub4[specoffset][0];	\
+			v0->ub4[specoffset][1] = v1->ub4[specoffset][1];	\
+			v0->ub4[specoffset][2] = v1->ub4[specoffset][2];	\
+		}							\
+	} while (0)
+
+
+#define VERT_SAVE_RGBA( idx )    color[idx] = v[idx]->ui[coloroffset]
+#define VERT_RESTORE_RGBA( idx ) v[idx]->ui[coloroffset] = color[idx]
+#define VERT_SAVE_SPEC( idx )    if (specoffset) spec[idx] = v[idx]->ui[specoffset]
+#define VERT_RESTORE_SPEC( idx ) if (specoffset) v[idx]->ui[specoffset] = spec[idx]
+
+
+#define LOCAL_VARS(n)                                                   \
+	struct nouveau_context *nmesa = NOUVEAU_CONTEXT(ctx);                             \
+GLuint color[n], spec[n];                                           \
+GLuint coloroffset = nmesa->coloroffset;              \
+GLuint specoffset = nmesa->specoffset;                       \
+(void)color; (void)spec; (void)coloroffset; (void)specoffset;
+
+
+/***********************************************************************
+ *                Helpers for rendering unfilled primitives            *
+ ***********************************************************************/
+
+#define RASTERIZE(x) nv40RasterPrimitive( ctx, x, x )
+#define RENDER_PRIMITIVE nmesa->renderPrimitive
+#define TAG(x) x
+#define IND NOUVEAU_FALLBACK_BIT
+#include "tnl_dd/t_dd_unfilled.h"
+#undef IND
+#undef RASTERIZE
+
+/***********************************************************************
+ *                      Generate GL render functions                   *
+ ***********************************************************************/
+#define RASTERIZE(x)
+
+#define IND (0)
+#define TAG(x) x
+#include "tnl_dd/t_dd_tritmp.h"
+
+#define IND (NOUVEAU_OFFSET_BIT)
+#define TAG(x) x##_offset
+#include "tnl_dd/t_dd_tritmp.h"
+
+#define IND (NOUVEAU_TWOSIDE_BIT)
+#define TAG(x) x##_twoside
+#include "tnl_dd/t_dd_tritmp.h"
+
+#define IND (NOUVEAU_TWOSIDE_BIT|NOUVEAU_OFFSET_BIT)
+#define TAG(x) x##_twoside_offset
+#include "tnl_dd/t_dd_tritmp.h"
+
+#define IND (NOUVEAU_UNFILLED_BIT)
+#define TAG(x) x##_unfilled
+#include "tnl_dd/t_dd_tritmp.h"
+
+#define IND (NOUVEAU_OFFSET_BIT|NOUVEAU_UNFILLED_BIT)
+#define TAG(x) x##_offset_unfilled
+#include "tnl_dd/t_dd_tritmp.h"
+
+#define IND (NOUVEAU_TWOSIDE_BIT|NOUVEAU_UNFILLED_BIT)
+#define TAG(x) x##_twoside_unfilled
+#include "tnl_dd/t_dd_tritmp.h"
+
+#define IND (NOUVEAU_TWOSIDE_BIT|NOUVEAU_OFFSET_BIT|NOUVEAU_UNFILLED_BIT)
+#define TAG(x) x##_twoside_offset_unfilled
+#include "tnl_dd/t_dd_tritmp.h"
+
+#define IND (NOUVEAU_FALLBACK_BIT)
+#define TAG(x) x##_fallback
+#include "tnl_dd/t_dd_tritmp.h"
+
+#define IND (NOUVEAU_OFFSET_BIT|NOUVEAU_FALLBACK_BIT)
+#define TAG(x) x##_offset_fallback
+#include "tnl_dd/t_dd_tritmp.h"
+
+#define IND (NOUVEAU_TWOSIDE_BIT|NOUVEAU_FALLBACK_BIT)
+#define TAG(x) x##_twoside_fallback
+#include "tnl_dd/t_dd_tritmp.h"
+
+#define IND (NOUVEAU_TWOSIDE_BIT|NOUVEAU_OFFSET_BIT|NOUVEAU_FALLBACK_BIT)
+#define TAG(x) x##_twoside_offset_fallback
+#include "tnl_dd/t_dd_tritmp.h"
+
+#define IND (NOUVEAU_UNFILLED_BIT|NOUVEAU_FALLBACK_BIT)
+#define TAG(x) x##_unfilled_fallback
+#include "tnl_dd/t_dd_tritmp.h"
+
+#define IND (NOUVEAU_OFFSET_BIT|NOUVEAU_UNFILLED_BIT|NOUVEAU_FALLBACK_BIT)
+#define TAG(x) x##_offset_unfilled_fallback
+#include "tnl_dd/t_dd_tritmp.h"
+
+#define IND (NOUVEAU_TWOSIDE_BIT|NOUVEAU_UNFILLED_BIT|NOUVEAU_FALLBACK_BIT)
+#define TAG(x) x##_twoside_unfilled_fallback
+#include "tnl_dd/t_dd_tritmp.h"
+
+#define IND (NOUVEAU_TWOSIDE_BIT|NOUVEAU_OFFSET_BIT|NOUVEAU_UNFILLED_BIT| \
+		NOUVEAU_FALLBACK_BIT)
+#define TAG(x) x##_twoside_offset_unfilled_fallback
+#include "tnl_dd/t_dd_tritmp.h"
+
+
+/* Catchall case for flat, separate specular triangles */
+#undef  DO_FALLBACK
+#undef  DO_OFFSET
+#undef  DO_UNFILLED
+#undef  DO_TWOSIDE
+#undef  DO_FLAT
+#define DO_FALLBACK (0)
+#define DO_OFFSET   (ctx->_TriangleCaps & DD_TRI_OFFSET)
+#define DO_UNFILLED (ctx->_TriangleCaps & DD_TRI_UNFILLED)
+#define DO_TWOSIDE  (ctx->_TriangleCaps & DD_TRI_LIGHT_TWOSIDE)
+#define DO_FLAT     1
+#define TAG(x) x##_flat_specular
+#define IND NOUVEAU_MAX_TRIFUNC
+#include "tnl_dd/t_dd_tritmp.h"
+
+
+static void init_rast_tab(void)
+{
+	init();
+	init_offset();
+	init_twoside();
+	init_twoside_offset();
+	init_unfilled();
+	init_offset_unfilled();
+	init_twoside_unfilled();
+	init_twoside_offset_unfilled();
+	init_fallback();
+	init_offset_fallback();
+	init_twoside_fallback();
+	init_twoside_offset_fallback();
+	init_unfilled_fallback();
+	init_offset_unfilled_fallback();
+	init_twoside_unfilled_fallback();
+	init_twoside_offset_unfilled_fallback();
+
+	init_flat_specular();	/* special! */
+}
+
+
+/**********************************************************************/
+/*               Render unclipped begin/end objects                   */
+/**********************************************************************/
+#define IND 0
+#define V(x) (nouveauVertex *)(vertptr + ((x) * vertsize * sizeof(int)))
+#define RENDER_POINTS(start, count)   \
+	for (; start < count; start++) POINT(V(ELT(start)));
+#define RENDER_LINE(v0, v1)         LINE(V(v0), V(v1))
+#define RENDER_TRI( v0, v1, v2)     TRI( V(v0), V(v1), V(v2))
+#define RENDER_QUAD(v0, v1, v2, v3) QUAD(V(v0), V(v1), V(v2), V(v3))
+#define INIT(x) nv40RasterPrimitive(ctx, x, x)
+#undef LOCAL_VARS
+#define LOCAL_VARS                                              \
+	struct nouveau_context *nmesa = NOUVEAU_CONTEXT(ctx);                     \
+GLubyte *vertptr = (GLubyte *)nmesa->verts;                 \
+const GLuint vertsize = nmesa->vertexSize;          \
+const GLuint * const elt = TNL_CONTEXT(ctx)->vb.Elts;       \
+const GLboolean stipple = ctx->Line.StippleFlag;		\
+(void) elt; (void) stipple;
+#define RESET_STIPPLE	if ( stipple ) nouveauResetLineStipple( ctx );
+#define RESET_OCCLUSION
+#define PRESERVE_VB_DEFS
+#define ELT(x) x
+#define TAG(x) nouveau_##x##_verts
+#include "tnl/t_vb_rendertmp.h"
+#undef ELT
+#undef TAG
+#define TAG(x) nouveau_##x##_elts
+#define ELT(x) elt[x]
+#include "tnl/t_vb_rendertmp.h"
+#undef ELT
+#undef TAG
+#undef NEED_EDGEFLAG_SETUP
+#undef EDGEFLAG_GET
+#undef EDGEFLAG_SET
+#undef RESET_OCCLUSION
+
+
+/**********************************************************************/
+/*                   Render clipped primitives                        */
+/**********************************************************************/
+
+
+
+static void nouveauRenderClippedPoly(GLcontext *ctx, const GLuint *elts,
+		GLuint n)
+{
+	TNLcontext *tnl = TNL_CONTEXT(ctx);
+	struct vertex_buffer *VB = &TNL_CONTEXT(ctx)->vb;
+	GLuint prim = NOUVEAU_CONTEXT(ctx)->renderPrimitive;
+
+	/* Render the new vertices as an unclipped polygon.
+	 */
+	{
+		GLuint *tmp = VB->Elts;
+		VB->Elts = (GLuint *)elts;
+		tnl->Driver.Render.PrimTabElts[GL_POLYGON](ctx, 0, n,
+				PRIM_BEGIN|PRIM_END);
+		VB->Elts = tmp;
+	}
+
+	/* Restore the render primitive
+	 */
+	if (prim != GL_POLYGON &&
+			prim != GL_POLYGON + 1)
+		tnl->Driver.Render.PrimitiveNotify( ctx, prim );
+}
+
+static void nouveauRenderClippedLine(GLcontext *ctx, GLuint ii, GLuint jj)
+{
+	TNLcontext *tnl = TNL_CONTEXT(ctx);
+	tnl->Driver.Render.Line(ctx, ii, jj);
+}
+
+static void nouveauFastRenderClippedPoly(GLcontext *ctx, const GLuint *elts,
+		GLuint n)
+{
+	struct nouveau_context *nmesa = NOUVEAU_CONTEXT(ctx);
+	GLuint vertsize = nmesa->vertexSize;
+	GLuint *vb = nouveauExtendPrimitive(nmesa, (n - 2) * 3 * 4 * vertsize);
+	GLubyte *vertptr = (GLubyte *)nmesa->verts;
+	const GLuint *start = (const GLuint *)V(elts[0]);
+	int i;
+
+	for (i = 2; i < n; i++) {
+		COPY_DWORDS(vb, vertsize, V(elts[i - 1]));
+		COPY_DWORDS(vb, vertsize, V(elts[i]));
+		COPY_DWORDS(vb, vertsize, start);	
+	}
+}
+
+/**********************************************************************/
+/*                    Choose render functions                         */
+/**********************************************************************/
+
+
+
+
+#define _NOUVEAU_NEW_VERTEX (_NEW_TEXTURE |                         \
+		_DD_NEW_SEPARATE_SPECULAR |            \
+		_DD_NEW_TRI_UNFILLED |                 \
+		_DD_NEW_TRI_LIGHT_TWOSIDE |            \
+		_NEW_FOG)
+
+#define _NOUVEAU_NEW_RENDERSTATE (_DD_NEW_LINE_STIPPLE |            \
+		_DD_NEW_TRI_UNFILLED |            \
+		_DD_NEW_TRI_LIGHT_TWOSIDE |       \
+		_DD_NEW_TRI_OFFSET |              \
+		_DD_NEW_TRI_STIPPLE |             \
+		_NEW_POLYGONSTIPPLE)
+
+
+static void nv40ChooseRenderState(GLcontext *ctx)
+{
+	TNLcontext *tnl = TNL_CONTEXT(ctx);
+	struct nouveau_context *nmesa = NOUVEAU_CONTEXT(ctx);
+	GLuint flags = ctx->_TriangleCaps;
+	GLuint index = 0;
+
+	nmesa->draw_point = nouveau_draw_point;
+	nmesa->draw_line = nouveau_draw_line;
+	nmesa->draw_tri = nouveau_draw_triangle;
+
+	if (flags & (ANY_FALLBACK_FLAGS|ANY_RASTER_FLAGS)) {
+		if (flags & DD_TRI_LIGHT_TWOSIDE)    index |= NOUVEAU_TWOSIDE_BIT;
+		if (flags & DD_TRI_OFFSET)           index |= NOUVEAU_OFFSET_BIT;
+		if (flags & DD_TRI_UNFILLED)         index |= NOUVEAU_UNFILLED_BIT;
+		if (flags & ANY_FALLBACK_FLAGS)      index |= NOUVEAU_FALLBACK_BIT;
+
+		/* Hook in fallbacks for specific primitives.
+		 */
+		if (flags & POINT_FALLBACK)
+			nmesa->draw_point = nouveau_fallback_point;
+
+		if (flags & LINE_FALLBACK)
+			nmesa->draw_line = nouveau_fallback_line;
+
+		if (flags & TRI_FALLBACK)
+			nmesa->draw_tri = nouveau_fallback_tri;
+	}
+
+
+	if ((flags & DD_SEPARATE_SPECULAR) &&
+			ctx->Light.ShadeModel == GL_FLAT) {
+		index = NOUVEAU_MAX_TRIFUNC;	/* flat specular */
+	}
+
+	if (nmesa->renderIndex != index) {
+		nmesa->renderIndex = index;
+
+		tnl->Driver.Render.Points = rast_tab[index].points;
+		tnl->Driver.Render.Line = rast_tab[index].line;
+		tnl->Driver.Render.Triangle = rast_tab[index].triangle;
+		tnl->Driver.Render.Quad = rast_tab[index].quad;
+
+		if (index == 0) {
+			tnl->Driver.Render.PrimTabVerts = nouveau_render_tab_verts;
+			tnl->Driver.Render.PrimTabElts = nouveau_render_tab_elts;
+			tnl->Driver.Render.ClippedLine = line; /* from tritmp.h */
+			tnl->Driver.Render.ClippedPolygon = nouveauFastRenderClippedPoly;
+		}
+		else {
+			tnl->Driver.Render.PrimTabVerts = _tnl_render_tab_verts;
+			tnl->Driver.Render.PrimTabElts = _tnl_render_tab_elts;
+			tnl->Driver.Render.ClippedLine = nouveauRenderClippedLine;
+			tnl->Driver.Render.ClippedPolygon = nouveauRenderClippedPoly;
+		}
+	}
+}
+
+
+
+static inline void nv40OutputVertexFormat(struct nouveau_context* mesa, GLuint index)
+{
+	/*
+	 * Determine how many inputs we need in the vertex format.
+	 * We need to find & setup the right input "slots"
+	 * 
+	 * The hw attribute order matches nv_vertex_program, and _TNL_BIT_* 
+	 * also matches this order, so we can take shortcuts...
+	 */
+	int i;
+	int slots=0;
+	for(i=0;i<16;i++)
+		if (index&(1<<i))
+			slots=i+1;
+
+	BEGIN_RING_SIZE(channel,0x1740,slots);
+	for(i=0;i<slots;i++)
+		if (index&(1<<i))
+		{
+			/* XXX for now we only emit 3-sized attributes */
+			int size=3;
+			OUR_RING(0x00000002|(size*0x10));
+		}
+		else
+		{
+			OUR_RING(0x00000002);
+		}
+	BEGIN_RING_SIZE(channel,0x1718,1);
+	OUT_RING(0);
+	BEGIN_RING_SIZE(channel,0x1718,1);
+	OUT_RING(0);
+	BEGIN_RING_SIZE(channel,0x1718,1);
+	OUT_RING(0);
+}
+
+
+static void nv40ChooseVertexState( GLcontext *ctx )
+{
+	struct nouveau_context *nmesa = NOUVEAU_CONTEXT(ctx);
+	TNLcontext *tnl = TNL_CONTEXT(ctx);
+	GLuint index = tnl->render_inputs;
+
+	if (index!=nmesa->render_inputs)
+	{
+		nmesa->render_inputs=index;
+		nv40OutputVertexFormat(nmesa,index);
+	}
+}
+
+
+/**********************************************************************/
+/*                 High level hooks for t_vb_render.c                 */
+/**********************************************************************/
+
+
+static void nv40RenderStart(GLcontext *ctx)
+{
+	struct nouveau_context *nmesa = NOUVEAU_CONTEXT(ctx);
+
+	if (nmesa->newState) {
+		nmesa->newRenderState |= nmesa->newState;
+		nouveauValidateState( ctx );
+	}
+
+	if (nmesa->Fallback) {
+		tnl->Driver.Render.Start(ctx);
+		return;
+	}
+
+	if (nmesa->newRenderState) {
+		nv40ChooseVertexState(ctx);
+		nv40ChooseRenderState(ctx);
+		nmesa->newRenderState = 0;
+	}
+}
+
+static void nv40RenderFinish(GLcontext *ctx)
+{
+	struct nouveau_context *nmesa = NOUVEAU_CONTEXT(ctx);
+	nv40FinishPrimitive(nmesa);
+}
+
+
+/* System to flush dma and emit state changes based on the rasterized
+ * primitive.
+ */
+void nv40RasterPrimitive(GLcontext *ctx,
+		GLenum glprim,
+		GLenum hwprim)
+{
+	struct nouveau_context *nmesa = NOUVEAU_CONTEXT(ctx);
+
+	assert (!nmesa->newState);
+	
+	if (hwprim != nmesa->current_primitive)
+	{
+		nmesa->current_primitive=hwprim;
+		
+	}
+}
+
+/* Callback for mesa:
+ */
+static void nv40RenderPrimitive( GLcontext *ctx, GLuint prim )
+{
+	nv40RasterPrimitive( ctx, prim, prim );
+}
+
+
+
+/**********************************************************************/
+/*                            Initialization.                         */
+/**********************************************************************/
+
+
+void nouveauInitTriFuncs(GLcontext *ctx)
+{
+	struct nouveau_context *nmesa = NOUVEAU_CONTEXT(ctx);
+	TNLcontext *tnl = TNL_CONTEXT(ctx);
+	static int firsttime = 1;
+
+	if (firsttime) {
+		init_rast_tab();
+		firsttime = 0;
+	}
+
+	tnl->Driver.RunPipeline = nouveauRunPipeline;
+	tnl->Driver.Render.Start = nv40RenderStart;
+	tnl->Driver.Render.Finish = nv40RenderFinish;
+	tnl->Driver.Render.PrimitiveNotify = nv40RenderPrimitive;
+	tnl->Driver.Render.ResetLineStipple = nouveauResetLineStipple;
+	tnl->Driver.Render.BuildVertices = _tnl_build_vertices;
+	tnl->Driver.Render.CopyPV = _tnl_copy_pv;
+	tnl->Driver.Render.Interp = _tnl_interp;
+
+	_tnl_init_vertices( ctx, ctx->Const.MaxArrayLockSize + 12, 
+			(6 + 2*ctx->Const.MaxTextureUnits) * sizeof(GLfloat) );
+
+	nmesa->verts = (GLubyte *)tnl->clipspace.vertex_buf;
+
+}
+