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-rw-r--r--nx-X11/extras/Mesa/src/mesa/drivers/dri/tdfx/tdfx_tris.c1293
1 files changed, 1293 insertions, 0 deletions
diff --git a/nx-X11/extras/Mesa/src/mesa/drivers/dri/tdfx/tdfx_tris.c b/nx-X11/extras/Mesa/src/mesa/drivers/dri/tdfx/tdfx_tris.c
new file mode 100644
index 000000000..ac8daf474
--- /dev/null
+++ b/nx-X11/extras/Mesa/src/mesa/drivers/dri/tdfx/tdfx_tris.c
@@ -0,0 +1,1293 @@
+/* -*- mode: c; c-basic-offset: 3 -*-
+ *
+ * Copyright 2000 VA Linux Systems Inc., Fremont, California.
+ *
+ * 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
+ * VA LINUX SYSTEMS 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.
+ */
+/* $XFree86: xc/lib/GL/mesa/src/drv/tdfx/tdfx_tris.c,v 1.4 2002/10/30 12:52:01 alanh Exp $ */
+
+/* New fixes:
+ * Daniel Borca <dborca@users.sourceforge.net>, 19 Jul 2004
+ *
+ * Authors:
+ * Keith Whitwell <keith@tungstengraphics.com>
+ */
+
+#include "glheader.h"
+#include "mtypes.h"
+#include "macros.h"
+#include "colormac.h"
+
+#include "swrast/swrast.h"
+#include "swrast_setup/swrast_setup.h"
+#include "swrast_setup/ss_context.h"
+#include "tnl/t_context.h"
+#include "tnl/t_pipeline.h"
+
+#include "tdfx_tris.h"
+#include "tdfx_state.h"
+#include "tdfx_vb.h"
+#include "tdfx_lock.h"
+#include "tdfx_render.h"
+
+
+static void tdfxRasterPrimitive( GLcontext *ctx, GLenum prim );
+static void tdfxRenderPrimitive( GLcontext *ctx, GLenum prim );
+
+static GLenum reduced_prim[GL_POLYGON+1] = {
+ GL_POINTS,
+ GL_LINES,
+ GL_LINES,
+ GL_LINES,
+ GL_TRIANGLES,
+ GL_TRIANGLES,
+ GL_TRIANGLES,
+ GL_TRIANGLES,
+ GL_TRIANGLES,
+ GL_TRIANGLES
+};
+
+/***********************************************************************
+ * Macros for t_dd_tritmp.h to draw basic primitives *
+ ***********************************************************************/
+
+#define TRI( a, b, c ) \
+do { \
+ if (DO_FALLBACK) \
+ fxMesa->draw_triangle( fxMesa, a, b, c ); \
+ else \
+ fxMesa->Glide.grDrawTriangle( a, b, c ); \
+} while (0) \
+
+#define QUAD( a, b, c, d ) \
+do { \
+ if (DO_FALLBACK) { \
+ fxMesa->draw_triangle( fxMesa, a, b, d ); \
+ fxMesa->draw_triangle( fxMesa, b, c, d ); \
+ } else { \
+ tdfxVertex *_v_[4]; \
+ _v_[0] = d; \
+ _v_[1] = a; \
+ _v_[2] = b; \
+ _v_[3] = c; \
+ fxMesa->Glide.grDrawVertexArray(GR_TRIANGLE_FAN, 4, _v_);\
+ /*fxMesa->Glide.grDrawTriangle( a, b, d );*/\
+ /*fxMesa->Glide.grDrawTriangle( b, c, d );*/\
+ } \
+} while (0)
+
+#define LINE( v0, v1 ) \
+do { \
+ if (DO_FALLBACK) \
+ fxMesa->draw_line( fxMesa, v0, v1 ); \
+ else { \
+ v0->x += LINE_X_OFFSET - TRI_X_OFFSET; \
+ v0->y += LINE_Y_OFFSET - TRI_Y_OFFSET; \
+ v1->x += LINE_X_OFFSET - TRI_X_OFFSET; \
+ v1->y += LINE_Y_OFFSET - TRI_Y_OFFSET; \
+ fxMesa->Glide.grDrawLine( v0, v1 ); \
+ v0->x -= LINE_X_OFFSET - TRI_X_OFFSET; \
+ v0->y -= LINE_Y_OFFSET - TRI_Y_OFFSET; \
+ v1->x -= LINE_X_OFFSET - TRI_X_OFFSET; \
+ v1->y -= LINE_Y_OFFSET - TRI_Y_OFFSET; \
+ } \
+} while (0)
+
+#define POINT( v0 ) \
+do { \
+ if (DO_FALLBACK) \
+ fxMesa->draw_point( fxMesa, v0 ); \
+ else { \
+ v0->x += PNT_X_OFFSET - TRI_X_OFFSET; \
+ v0->y += PNT_Y_OFFSET - TRI_Y_OFFSET; \
+ fxMesa->Glide.grDrawPoint( v0 ); \
+ v0->x -= PNT_X_OFFSET - TRI_X_OFFSET; \
+ v0->y -= PNT_Y_OFFSET - TRI_Y_OFFSET; \
+ } \
+} while (0)
+
+
+/***********************************************************************
+ * Fallback to swrast for basic primitives *
+ ***********************************************************************/
+
+/* Build an SWvertex from a hardware vertex.
+ *
+ * This code is hit only when a mix of accelerated and unaccelerated
+ * primitives are being drawn, and only for the unaccelerated
+ * primitives.
+ */
+static void
+tdfx_translate_vertex( GLcontext *ctx, const tdfxVertex *src, SWvertex *dst)
+{
+ tdfxContextPtr fxMesa = TDFX_CONTEXT(ctx);
+
+ if (fxMesa->vertexFormat == TDFX_LAYOUT_TINY) {
+ dst->win[0] = src->x - fxMesa->x_offset;
+ dst->win[1] = src->y - (fxMesa->screen_height - fxMesa->height - fxMesa->y_offset);
+ dst->win[2] = src->z;
+ dst->win[3] = 1.0;
+
+ dst->color[0] = src->color[2];
+ dst->color[1] = src->color[1];
+ dst->color[2] = src->color[0];
+ dst->color[3] = src->color[3];
+ }
+ else {
+ GLfloat w = 1.0 / src->rhw;
+
+ dst->win[0] = src->x - fxMesa->x_offset;
+ dst->win[1] = src->y - (fxMesa->screen_height - fxMesa->height - fxMesa->y_offset);
+ dst->win[2] = src->z;
+ dst->win[3] = src->rhw;
+
+ dst->color[0] = src->color[2];
+ dst->color[1] = src->color[1];
+ dst->color[2] = src->color[0];
+ dst->color[3] = src->color[3];
+
+ dst->texcoord[0][0] = 1.0 / fxMesa->sScale0 * w * src->tu0;
+ dst->texcoord[0][1] = 1.0 / fxMesa->tScale0 * w * src->tv0;
+ if (fxMesa->vertexFormat == TDFX_LAYOUT_PROJ1 || fxMesa->vertexFormat == TDFX_LAYOUT_PROJ2) {
+ dst->texcoord[0][3] = w * src->tq0;
+ } else {
+ dst->texcoord[0][3] = 1.0;
+ }
+
+ if (fxMesa->SetupIndex & TDFX_TEX1_BIT) {
+ dst->texcoord[1][0] = 1.0 / fxMesa->sScale1 * w * src->tu1;
+ dst->texcoord[1][1] = 1.0 / fxMesa->tScale1 * w * src->tv1;
+ if (fxMesa->vertexFormat == TDFX_LAYOUT_PROJ2) {
+ dst->texcoord[1][3] = w * src->tq1;
+ } else {
+ dst->texcoord[1][3] = 1.0;
+ }
+ }
+ }
+
+ dst->pointSize = ctx->Point._Size;
+}
+
+
+static void
+tdfx_fallback_tri( tdfxContextPtr fxMesa,
+ tdfxVertex *v0,
+ tdfxVertex *v1,
+ tdfxVertex *v2 )
+{
+ GLcontext *ctx = fxMesa->glCtx;
+ SWvertex v[3];
+ tdfx_translate_vertex( ctx, v0, &v[0] );
+ tdfx_translate_vertex( ctx, v1, &v[1] );
+ tdfx_translate_vertex( ctx, v2, &v[2] );
+ _swrast_Triangle( ctx, &v[0], &v[1], &v[2] );
+}
+
+
+static void
+tdfx_fallback_line( tdfxContextPtr fxMesa,
+ tdfxVertex *v0,
+ tdfxVertex *v1 )
+{
+ GLcontext *ctx = fxMesa->glCtx;
+ SWvertex v[2];
+ tdfx_translate_vertex( ctx, v0, &v[0] );
+ tdfx_translate_vertex( ctx, v1, &v[1] );
+ _swrast_Line( ctx, &v[0], &v[1] );
+}
+
+
+static void
+tdfx_fallback_point( tdfxContextPtr fxMesa,
+ tdfxVertex *v0 )
+{
+ GLcontext *ctx = fxMesa->glCtx;
+ SWvertex v[1];
+ tdfx_translate_vertex( ctx, v0, &v[0] );
+ _swrast_Point( ctx, &v[0] );
+}
+
+/***********************************************************************
+ * Functions to draw basic primitives *
+ ***********************************************************************/
+
+static void tdfx_print_vertex( GLcontext *ctx, const tdfxVertex *v )
+{
+ tdfxContextPtr tmesa = TDFX_CONTEXT( ctx );
+
+ fprintf(stderr, "vertex at %p\n", (void *)v);
+
+ if (tmesa->vertexFormat == TDFX_LAYOUT_TINY) {
+ fprintf(stderr, "x %f y %f z %f\n", v->x, v->y, v->z);
+ }
+ else {
+ fprintf(stderr, "x %f y %f z %f oow %f\n",
+ v->x, v->y, v->z, v->rhw);
+ }
+ fprintf(stderr, "r %d g %d b %d a %d\n",
+ v->color[0],
+ v->color[1],
+ v->color[2],
+ v->color[3]);
+
+ fprintf(stderr, "\n");
+}
+
+#define DO_FALLBACK 0
+
+/* Need to do clip loop at each triangle when mixing swrast and hw
+ * rendering. These functions are only used when mixed-mode rendering
+ * is occurring.
+ */
+static void tdfx_draw_triangle( tdfxContextPtr fxMesa,
+ tdfxVertexPtr v0,
+ tdfxVertexPtr v1,
+ tdfxVertexPtr v2 )
+{
+/* fprintf(stderr, "%s\n", __FUNCTION__); */
+/* tdfx_print_vertex( fxMesa->glCtx, v0 ); */
+/* tdfx_print_vertex( fxMesa->glCtx, v1 ); */
+/* tdfx_print_vertex( fxMesa->glCtx, v2 ); */
+ BEGIN_CLIP_LOOP_LOCKED(fxMesa) {
+ TRI( v0, v1, v2 );
+ } END_CLIP_LOOP_LOCKED(fxMesa);
+}
+
+static void tdfx_draw_line( tdfxContextPtr fxMesa,
+ tdfxVertexPtr v0,
+ tdfxVertexPtr v1 )
+{
+ /* No support for wide lines (avoid wide/aa line fallback).
+ */
+ BEGIN_CLIP_LOOP_LOCKED(fxMesa) {
+ LINE(v0, v1);
+ } END_CLIP_LOOP_LOCKED(fxMesa);
+}
+
+static void tdfx_draw_point( tdfxContextPtr fxMesa,
+ tdfxVertexPtr v0 )
+{
+ /* No support for wide points.
+ */
+ BEGIN_CLIP_LOOP_LOCKED(fxMesa) {
+ POINT( v0 );
+ } END_CLIP_LOOP_LOCKED(fxMesa);
+}
+
+#undef DO_FALLBACK
+
+
+#define TDFX_UNFILLED_BIT 0x1
+#define TDFX_OFFSET_BIT 0x2
+#define TDFX_TWOSIDE_BIT 0x4
+#define TDFX_FLAT_BIT 0x8
+#define TDFX_FALLBACK_BIT 0x10
+#define TDFX_MAX_TRIFUNC 0x20
+
+static struct {
+ tnl_points_func points;
+ tnl_line_func line;
+ tnl_triangle_func triangle;
+ tnl_quad_func quad;
+} rast_tab[TDFX_MAX_TRIFUNC];
+
+#define DO_FALLBACK (IND & TDFX_FALLBACK_BIT)
+#define DO_OFFSET (IND & TDFX_OFFSET_BIT)
+#define DO_UNFILLED (IND & TDFX_UNFILLED_BIT)
+#define DO_TWOSIDE (IND & TDFX_TWOSIDE_BIT)
+#define DO_FLAT (IND & TDFX_FLAT_BIT)
+#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 0
+#define HAVE_HW_FLATSHADE 0
+#define HAVE_BACK_COLORS 0
+#define VERTEX tdfxVertex
+#define TAB rast_tab
+
+#define DEPTH_SCALE 1.0
+#define UNFILLED_TRI unfilled_tri
+#define UNFILLED_QUAD unfilled_quad
+#define VERT_X(_v) _v->x
+#define VERT_Y(_v) _v->y
+#define VERT_Z(_v) _v->z
+#define AREA_IS_CCW( a ) (a < 0)
+#define GET_VERTEX(e) (fxMesa->verts + (e))
+
+#define VERT_SET_RGBA( dst, f ) \
+do { \
+ UNCLAMPED_FLOAT_TO_UBYTE(dst->color[2], f[0]);\
+ UNCLAMPED_FLOAT_TO_UBYTE(dst->color[1], f[1]);\
+ UNCLAMPED_FLOAT_TO_UBYTE(dst->color[0], f[2]);\
+ UNCLAMPED_FLOAT_TO_UBYTE(dst->color[3], f[3]);\
+} while (0)
+
+#define VERT_COPY_RGBA( v0, v1 ) \
+ *(GLuint *)&v0->color = *(GLuint *)&v1->color
+
+#define VERT_SAVE_RGBA( idx ) \
+ *(GLuint *)&color[idx] = *(GLuint *)&v[idx]->color
+
+#define VERT_RESTORE_RGBA( idx ) \
+ *(GLuint *)&v[idx]->color = *(GLuint *)&color[idx]
+
+#define LOCAL_VARS(n) \
+ tdfxContextPtr fxMesa = TDFX_CONTEXT(ctx); \
+ GLubyte color[n][4]; \
+ (void) color;
+
+
+
+/***********************************************************************
+ * Functions to draw basic unfilled primitives *
+ ***********************************************************************/
+
+#define RASTERIZE(x) if (fxMesa->raster_primitive != reduced_prim[x]) \
+ tdfxRasterPrimitive( ctx, reduced_prim[x] )
+#define RENDER_PRIMITIVE fxMesa->render_primitive
+#define IND TDFX_FALLBACK_BIT
+#define TAG(x) x
+#include "tnl_dd/t_dd_unfilled.h"
+#undef IND
+
+/***********************************************************************
+ * Functions to draw GL primitives *
+ ***********************************************************************/
+
+#define IND (0)
+#define TAG(x) x
+#include "tnl_dd/t_dd_tritmp.h"
+
+#define IND (TDFX_OFFSET_BIT)
+#define TAG(x) x##_offset
+#include "tnl_dd/t_dd_tritmp.h"
+
+#define IND (TDFX_TWOSIDE_BIT)
+#define TAG(x) x##_twoside
+#include "tnl_dd/t_dd_tritmp.h"
+
+#define IND (TDFX_TWOSIDE_BIT|TDFX_OFFSET_BIT)
+#define TAG(x) x##_twoside_offset
+#include "tnl_dd/t_dd_tritmp.h"
+
+#define IND (TDFX_UNFILLED_BIT)
+#define TAG(x) x##_unfilled
+#include "tnl_dd/t_dd_tritmp.h"
+
+#define IND (TDFX_OFFSET_BIT|TDFX_UNFILLED_BIT)
+#define TAG(x) x##_offset_unfilled
+#include "tnl_dd/t_dd_tritmp.h"
+
+#define IND (TDFX_TWOSIDE_BIT|TDFX_UNFILLED_BIT)
+#define TAG(x) x##_twoside_unfilled
+#include "tnl_dd/t_dd_tritmp.h"
+
+#define IND (TDFX_TWOSIDE_BIT|TDFX_OFFSET_BIT|TDFX_UNFILLED_BIT)
+#define TAG(x) x##_twoside_offset_unfilled
+#include "tnl_dd/t_dd_tritmp.h"
+
+#define IND (TDFX_FALLBACK_BIT)
+#define TAG(x) x##_fallback
+#include "tnl_dd/t_dd_tritmp.h"
+
+#define IND (TDFX_OFFSET_BIT|TDFX_FALLBACK_BIT)
+#define TAG(x) x##_offset_fallback
+#include "tnl_dd/t_dd_tritmp.h"
+
+#define IND (TDFX_TWOSIDE_BIT|TDFX_FALLBACK_BIT)
+#define TAG(x) x##_twoside_fallback
+#include "tnl_dd/t_dd_tritmp.h"
+
+#define IND (TDFX_TWOSIDE_BIT|TDFX_OFFSET_BIT|TDFX_FALLBACK_BIT)
+#define TAG(x) x##_twoside_offset_fallback
+#include "tnl_dd/t_dd_tritmp.h"
+
+#define IND (TDFX_UNFILLED_BIT|TDFX_FALLBACK_BIT)
+#define TAG(x) x##_unfilled_fallback
+#include "tnl_dd/t_dd_tritmp.h"
+
+#define IND (TDFX_OFFSET_BIT|TDFX_UNFILLED_BIT|TDFX_FALLBACK_BIT)
+#define TAG(x) x##_offset_unfilled_fallback
+#include "tnl_dd/t_dd_tritmp.h"
+
+#define IND (TDFX_TWOSIDE_BIT|TDFX_UNFILLED_BIT|TDFX_FALLBACK_BIT)
+#define TAG(x) x##_twoside_unfilled_fallback
+#include "tnl_dd/t_dd_tritmp.h"
+
+#define IND (TDFX_TWOSIDE_BIT|TDFX_OFFSET_BIT|TDFX_UNFILLED_BIT| \
+ TDFX_FALLBACK_BIT)
+#define TAG(x) x##_twoside_offset_unfilled_fallback
+#include "tnl_dd/t_dd_tritmp.h"
+
+
+/* Tdfx doesn't support provoking-vertex flat-shading?
+ */
+#define IND (TDFX_FLAT_BIT)
+#define TAG(x) x##_flat
+#include "tnl_dd/t_dd_tritmp.h"
+
+#define IND (TDFX_OFFSET_BIT|TDFX_FLAT_BIT)
+#define TAG(x) x##_offset_flat
+#include "tnl_dd/t_dd_tritmp.h"
+
+#define IND (TDFX_TWOSIDE_BIT|TDFX_FLAT_BIT)
+#define TAG(x) x##_twoside_flat
+#include "tnl_dd/t_dd_tritmp.h"
+
+#define IND (TDFX_TWOSIDE_BIT|TDFX_OFFSET_BIT|TDFX_FLAT_BIT)
+#define TAG(x) x##_twoside_offset_flat
+#include "tnl_dd/t_dd_tritmp.h"
+
+#define IND (TDFX_UNFILLED_BIT|TDFX_FLAT_BIT)
+#define TAG(x) x##_unfilled_flat
+#include "tnl_dd/t_dd_tritmp.h"
+
+#define IND (TDFX_OFFSET_BIT|TDFX_UNFILLED_BIT|TDFX_FLAT_BIT)
+#define TAG(x) x##_offset_unfilled_flat
+#include "tnl_dd/t_dd_tritmp.h"
+
+#define IND (TDFX_TWOSIDE_BIT|TDFX_UNFILLED_BIT|TDFX_FLAT_BIT)
+#define TAG(x) x##_twoside_unfilled_flat
+#include "tnl_dd/t_dd_tritmp.h"
+
+#define IND (TDFX_TWOSIDE_BIT|TDFX_OFFSET_BIT|TDFX_UNFILLED_BIT|TDFX_FLAT_BIT)
+#define TAG(x) x##_twoside_offset_unfilled_flat
+#include "tnl_dd/t_dd_tritmp.h"
+
+#define IND (TDFX_FALLBACK_BIT|TDFX_FLAT_BIT)
+#define TAG(x) x##_fallback_flat
+#include "tnl_dd/t_dd_tritmp.h"
+
+#define IND (TDFX_OFFSET_BIT|TDFX_FALLBACK_BIT|TDFX_FLAT_BIT)
+#define TAG(x) x##_offset_fallback_flat
+#include "tnl_dd/t_dd_tritmp.h"
+
+#define IND (TDFX_TWOSIDE_BIT|TDFX_FALLBACK_BIT|TDFX_FLAT_BIT)
+#define TAG(x) x##_twoside_fallback_flat
+#include "tnl_dd/t_dd_tritmp.h"
+
+#define IND (TDFX_TWOSIDE_BIT|TDFX_OFFSET_BIT|TDFX_FALLBACK_BIT|TDFX_FLAT_BIT)
+#define TAG(x) x##_twoside_offset_fallback_flat
+#include "tnl_dd/t_dd_tritmp.h"
+
+#define IND (TDFX_UNFILLED_BIT|TDFX_FALLBACK_BIT|TDFX_FLAT_BIT)
+#define TAG(x) x##_unfilled_fallback_flat
+#include "tnl_dd/t_dd_tritmp.h"
+
+#define IND (TDFX_OFFSET_BIT|TDFX_UNFILLED_BIT|TDFX_FALLBACK_BIT|TDFX_FLAT_BIT)
+#define TAG(x) x##_offset_unfilled_fallback_flat
+#include "tnl_dd/t_dd_tritmp.h"
+
+#define IND (TDFX_TWOSIDE_BIT|TDFX_UNFILLED_BIT|TDFX_FALLBACK_BIT|TDFX_FLAT_BIT)
+#define TAG(x) x##_twoside_unfilled_fallback_flat
+#include "tnl_dd/t_dd_tritmp.h"
+
+#define IND (TDFX_TWOSIDE_BIT|TDFX_OFFSET_BIT|TDFX_UNFILLED_BIT| \
+ TDFX_FALLBACK_BIT|TDFX_FLAT_BIT)
+#define TAG(x) x##_twoside_offset_unfilled_fallback_flat
+#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();
+ init_offset_flat();
+ init_twoside_flat();
+ init_twoside_offset_flat();
+ init_unfilled_flat();
+ init_offset_unfilled_flat();
+ init_twoside_unfilled_flat();
+ init_twoside_offset_unfilled_flat();
+ init_fallback_flat();
+ init_offset_fallback_flat();
+ init_twoside_fallback_flat();
+ init_twoside_offset_fallback_flat();
+ init_unfilled_fallback_flat();
+ init_offset_unfilled_fallback_flat();
+ init_twoside_unfilled_fallback_flat();
+ init_twoside_offset_unfilled_fallback_flat();
+}
+
+
+/**********************************************************************/
+/* Render whole begin/end objects */
+/**********************************************************************/
+
+
+/* Accelerate vertex buffer rendering when renderindex == 0 and
+ * there is no clipping.
+ */
+#define INIT(x) tdfxRenderPrimitive( ctx, x )
+
+static void tdfx_render_vb_points( GLcontext *ctx,
+ GLuint start,
+ GLuint count,
+ GLuint flags )
+{
+ tdfxContextPtr fxMesa = TDFX_CONTEXT(ctx);
+ tdfxVertex *fxVB = fxMesa->verts;
+ GLint i;
+ (void) flags;
+
+ INIT(GL_POINTS);
+
+ /* Adjust point coords */
+ for (i = start; i < count; i++) {
+ fxVB[i].x += PNT_X_OFFSET - TRI_X_OFFSET;
+ fxVB[i].y += PNT_Y_OFFSET - TRI_Y_OFFSET;
+ }
+
+ fxMesa->Glide.grDrawVertexArrayContiguous( GR_POINTS, count-start,
+ fxVB + start, sizeof(tdfxVertex));
+ /* restore point coords */
+ for (i = start; i < count; i++) {
+ fxVB[i].x -= PNT_X_OFFSET - TRI_X_OFFSET;
+ fxVB[i].y -= PNT_Y_OFFSET - TRI_Y_OFFSET;
+ }
+}
+
+static void tdfx_render_vb_line_strip( GLcontext *ctx,
+ GLuint start,
+ GLuint count,
+ GLuint flags )
+{
+ tdfxContextPtr fxMesa = TDFX_CONTEXT(ctx);
+ tdfxVertex *fxVB = fxMesa->verts;
+ GLint i;
+ (void) flags;
+
+ INIT(GL_LINE_STRIP);
+
+ /* adjust line coords */
+ for (i = start; i < count; i++) {
+ fxVB[i].x += LINE_X_OFFSET - TRI_X_OFFSET;
+ fxVB[i].y += LINE_Y_OFFSET - TRI_Y_OFFSET;
+ }
+
+ fxMesa->Glide.grDrawVertexArrayContiguous( GR_LINE_STRIP, count-start,
+ fxVB + start, sizeof(tdfxVertex) );
+
+ /* restore line coords */
+ for (i = start; i < count; i++) {
+ fxVB[i].x -= LINE_X_OFFSET - TRI_X_OFFSET;
+ fxVB[i].y -= LINE_Y_OFFSET - TRI_Y_OFFSET;
+ }
+}
+
+static void tdfx_render_vb_line_loop( GLcontext *ctx,
+ GLuint start,
+ GLuint count,
+ GLuint flags )
+{
+ tdfxContextPtr fxMesa = TDFX_CONTEXT(ctx);
+ tdfxVertex *fxVB = fxMesa->verts;
+ GLint i;
+ GLint j = start;
+ (void) flags;
+
+ INIT(GL_LINE_LOOP);
+
+ if (!(flags & PRIM_BEGIN)) {
+ j++;
+ }
+
+ /* adjust line coords */
+ for (i = start; i < count; i++) {
+ fxVB[i].x += LINE_X_OFFSET - TRI_X_OFFSET;
+ fxVB[i].y += LINE_Y_OFFSET - TRI_Y_OFFSET;
+ }
+
+ fxMesa->Glide.grDrawVertexArrayContiguous( GR_LINE_STRIP, count-j,
+ fxVB + j, sizeof(tdfxVertex));
+
+ if (flags & PRIM_END)
+ fxMesa->Glide.grDrawLine( fxVB + (count - 1),
+ fxVB + start );
+
+ /* restore line coords */
+ for (i = start; i < count; i++) {
+ fxVB[i].x -= LINE_X_OFFSET - TRI_X_OFFSET;
+ fxVB[i].y -= LINE_Y_OFFSET - TRI_Y_OFFSET;
+ }
+}
+
+static void tdfx_render_vb_lines( GLcontext *ctx,
+ GLuint start,
+ GLuint count,
+ GLuint flags )
+{
+ tdfxContextPtr fxMesa = TDFX_CONTEXT(ctx);
+ tdfxVertex *fxVB = fxMesa->verts;
+ GLint i;
+ (void) flags;
+
+ INIT(GL_LINES);
+
+ /* adjust line coords */
+ for (i = start; i < count; i++) {
+ fxVB[i].x += LINE_X_OFFSET - TRI_X_OFFSET;
+ fxVB[i].y += LINE_Y_OFFSET - TRI_Y_OFFSET;
+ }
+
+ fxMesa->Glide.grDrawVertexArrayContiguous( GR_LINES, count-start,
+ fxVB + start, sizeof(tdfxVertex));
+
+ /* restore line coords */
+ for (i = start; i < count; i++) {
+ fxVB[i].x -= LINE_X_OFFSET - TRI_X_OFFSET;
+ fxVB[i].y -= LINE_Y_OFFSET - TRI_Y_OFFSET;
+ }
+}
+
+static void tdfx_render_vb_triangles( GLcontext *ctx,
+ GLuint start,
+ GLuint count,
+ GLuint flags )
+{
+ tdfxContextPtr fxMesa = TDFX_CONTEXT(ctx);
+ tdfxVertex *fxVB = fxMesa->verts;
+ (void) flags;
+
+ INIT(GL_TRIANGLES);
+
+#if 0
+ /* [dBorca]
+ * apparently, this causes troubles with some programs (GLExcess);
+ * might be a bug in Glide... However, "grDrawVertexArrayContiguous"
+ * eventually calls "grDrawTriangle" for GR_TRIANGLES, so we're better
+ * off doing it by hand...
+ */
+ fxMesa->Glide.grDrawVertexArrayContiguous( GR_TRIANGLES, count-start,
+ fxVB + start, sizeof(tdfxVertex));
+#else
+ {
+ GLuint j;
+ for (j=start+2; j<count; j+=3) {
+ fxMesa->Glide.grDrawTriangle(fxVB + (j-2), fxVB + (j-1), fxVB + j);
+ }
+ }
+#endif
+}
+
+
+static void tdfx_render_vb_tri_strip( GLcontext *ctx,
+ GLuint start,
+ GLuint count,
+ GLuint flags )
+{
+ tdfxContextPtr fxMesa = TDFX_CONTEXT(ctx);
+ tdfxVertex *fxVB = fxMesa->verts;
+ int mode;
+ (void) flags;
+
+ INIT(GL_TRIANGLE_STRIP);
+
+/* fprintf(stderr, "%s/%d\n", __FUNCTION__, 1<<shift); */
+/* if(!prevLockLine) abort(); */
+
+ mode = GR_TRIANGLE_STRIP;
+
+ fxMesa->Glide.grDrawVertexArrayContiguous( mode, count-start,
+ fxVB + start, sizeof(tdfxVertex));
+}
+
+
+static void tdfx_render_vb_tri_fan( GLcontext *ctx,
+ GLuint start,
+ GLuint count,
+ GLuint flags )
+{
+ tdfxContextPtr fxMesa = TDFX_CONTEXT(ctx);
+ tdfxVertex *fxVB = fxMesa->verts;
+ (void) flags;
+
+ INIT(GL_TRIANGLE_FAN);
+
+ fxMesa->Glide.grDrawVertexArrayContiguous( GR_TRIANGLE_FAN, count-start,
+ fxVB + start, sizeof(tdfxVertex) );
+}
+
+static void tdfx_render_vb_quads( GLcontext *ctx,
+ GLuint start,
+ GLuint count,
+ GLuint flags )
+{
+ tdfxContextPtr fxMesa = TDFX_CONTEXT(ctx);
+ tdfxVertex *fxVB = fxMesa->verts;
+ GLuint i;
+ (void) flags;
+
+ INIT(GL_QUADS);
+
+ for (i = start + 3 ; i < count ; i += 4 ) {
+#define VERT(x) (fxVB + (x))
+ tdfxVertex *_v_[4];
+ _v_[0] = VERT(i);
+ _v_[1] = VERT(i-3);
+ _v_[2] = VERT(i-2);
+ _v_[3] = VERT(i-1);
+ fxMesa->Glide.grDrawVertexArray(GR_TRIANGLE_FAN, 4, _v_);
+ /*fxMesa->Glide.grDrawTriangle( VERT(i-3), VERT(i-2), VERT(i) );*/
+ /*fxMesa->Glide.grDrawTriangle( VERT(i-2), VERT(i-1), VERT(i) );*/
+#undef VERT
+ }
+}
+
+static void tdfx_render_vb_quad_strip( GLcontext *ctx,
+ GLuint start,
+ GLuint count,
+ GLuint flags )
+{
+ tdfxContextPtr fxMesa = TDFX_CONTEXT(ctx);
+ tdfxVertex *fxVB = fxMesa->verts;
+ (void) flags;
+
+ INIT(GL_QUAD_STRIP);
+
+ count -= (count-start)&1;
+
+ fxMesa->Glide.grDrawVertexArrayContiguous( GR_TRIANGLE_STRIP,
+ count-start, fxVB + start, sizeof(tdfxVertex));
+}
+
+static void tdfx_render_vb_poly( GLcontext *ctx,
+ GLuint start,
+ GLuint count,
+ GLuint flags )
+{
+ tdfxContextPtr fxMesa = TDFX_CONTEXT(ctx);
+ tdfxVertex *fxVB = fxMesa->verts;
+ (void) flags;
+
+ INIT(GL_POLYGON);
+
+ fxMesa->Glide.grDrawVertexArrayContiguous( GR_POLYGON, count-start,
+ fxVB + start, sizeof(tdfxVertex));
+}
+
+static void tdfx_render_vb_noop( GLcontext *ctx,
+ GLuint start,
+ GLuint count,
+ GLuint flags )
+{
+ (void) (ctx && start && count && flags);
+}
+
+static void (*tdfx_render_tab_verts[GL_POLYGON+2])(GLcontext *,
+ GLuint,
+ GLuint,
+ GLuint) =
+{
+ tdfx_render_vb_points,
+ tdfx_render_vb_lines,
+ tdfx_render_vb_line_loop,
+ tdfx_render_vb_line_strip,
+ tdfx_render_vb_triangles,
+ tdfx_render_vb_tri_strip,
+ tdfx_render_vb_tri_fan,
+ tdfx_render_vb_quads,
+ tdfx_render_vb_quad_strip,
+ tdfx_render_vb_poly,
+ tdfx_render_vb_noop,
+};
+#undef INIT
+
+
+/**********************************************************************/
+/* Render whole (indexed) begin/end objects */
+/**********************************************************************/
+
+
+#define VERT(x) (tdfxVertex *)(vertptr + (x))
+
+#define RENDER_POINTS( start, count ) \
+ for ( ; start < count ; start++) \
+ fxMesa->Glide.grDrawPoint( VERT(ELT(start)) );
+
+#define RENDER_LINE( v0, v1 ) \
+ fxMesa->Glide.grDrawLine( VERT(v0), VERT(v1) )
+
+#define RENDER_TRI( v0, v1, v2 ) \
+ fxMesa->Glide.grDrawTriangle( VERT(v0), VERT(v1), VERT(v2) )
+
+#define RENDER_QUAD( v0, v1, v2, v3 ) \
+ do { \
+ tdfxVertex *_v_[4]; \
+ _v_[0] = VERT(v3); \
+ _v_[1] = VERT(v0); \
+ _v_[2] = VERT(v1); \
+ _v_[3] = VERT(v2); \
+ fxMesa->Glide.grDrawVertexArray(GR_TRIANGLE_FAN, 4, _v_);\
+ /*fxMesa->Glide.grDrawTriangle( VERT(v0), VERT(v1), VERT(v3) );*/\
+ /*fxMesa->Glide.grDrawTriangle( VERT(v1), VERT(v2), VERT(v3) );*/\
+ } while (0)
+
+#define INIT(x) tdfxRenderPrimitive( ctx, x )
+
+#undef LOCAL_VARS
+#define LOCAL_VARS \
+ tdfxContextPtr fxMesa = TDFX_CONTEXT(ctx); \
+ tdfxVertex *vertptr = fxMesa->verts; \
+ const GLuint * const elt = TNL_CONTEXT(ctx)->vb.Elts; \
+ (void) elt;
+
+#define RESET_STIPPLE
+#define RESET_OCCLUSION
+#define PRESERVE_VB_DEFS
+
+/* Elts, no clipping.
+ */
+#undef ELT
+#undef TAG
+#define TAG(x) tdfx_##x##_elts
+#define ELT(x) elt[x]
+#include "tnl_dd/t_dd_rendertmp.h"
+
+/* Verts, no clipping.
+ */
+#undef ELT
+#undef TAG
+#define TAG(x) tdfx_##x##_verts
+#define ELT(x) x
+/*#include "tnl_dd/t_dd_rendertmp.h"*/
+
+
+
+/**********************************************************************/
+/* Render clipped primitives */
+/**********************************************************************/
+
+
+
+static void tdfxRenderClippedPoly( GLcontext *ctx, const GLuint *elts,
+ GLuint n )
+{
+ tdfxContextPtr fxMesa = TDFX_CONTEXT(ctx);
+ TNLcontext *tnl = TNL_CONTEXT(ctx);
+ struct vertex_buffer *VB = &tnl->vb;
+ GLuint prim = fxMesa->render_primitive;
+
+ /* 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)
+ tnl->Driver.Render.PrimitiveNotify( ctx, prim );
+}
+
+static void tdfxRenderClippedLine( GLcontext *ctx, GLuint ii, GLuint jj )
+{
+ TNLcontext *tnl = TNL_CONTEXT(ctx);
+ tnl->Driver.Render.Line( ctx, ii, jj );
+}
+
+static void tdfxFastRenderClippedPoly( GLcontext *ctx, const GLuint *elts,
+ GLuint n )
+{
+ int i;
+ tdfxContextPtr fxMesa = TDFX_CONTEXT( ctx );
+ tdfxVertex *vertptr = fxMesa->verts;
+ if (n == 3) {
+ fxMesa->Glide.grDrawTriangle( VERT(elts[0]), VERT(elts[1]), VERT(elts[2]) );
+ } else if (n <= 32) {
+ tdfxVertex *newvptr[32];
+ for (i = 0 ; i < n ; i++) {
+ newvptr[i] = VERT(elts[i]);
+ }
+ fxMesa->Glide.grDrawVertexArray(GR_TRIANGLE_FAN, n, newvptr);
+ } else {
+ const tdfxVertex *start = VERT(elts[0]);
+ for (i = 2 ; i < n ; i++) {
+ fxMesa->Glide.grDrawTriangle( start, VERT(elts[i-1]), VERT(elts[i]) );
+ }
+ }
+}
+
+/**********************************************************************/
+/* Choose render functions */
+/**********************************************************************/
+
+
+#define POINT_FALLBACK (DD_POINT_SMOOTH)
+#define LINE_FALLBACK (DD_LINE_STIPPLE)
+#define TRI_FALLBACK (DD_TRI_SMOOTH)
+#define ANY_FALLBACK_FLAGS (POINT_FALLBACK|LINE_FALLBACK|TRI_FALLBACK|DD_TRI_STIPPLE)
+#define ANY_RASTER_FLAGS (DD_FLATSHADE|DD_TRI_LIGHT_TWOSIDE|DD_TRI_OFFSET| \
+ DD_TRI_UNFILLED)
+
+
+/* All state referenced below:
+ */
+#define _TDFX_NEW_RENDERSTATE (_DD_NEW_POINT_SMOOTH | \
+ _DD_NEW_LINE_STIPPLE | \
+ _DD_NEW_TRI_SMOOTH | \
+ _DD_NEW_FLATSHADE | \
+ _DD_NEW_TRI_UNFILLED | \
+ _DD_NEW_TRI_LIGHT_TWOSIDE | \
+ _DD_NEW_TRI_OFFSET | \
+ _DD_NEW_TRI_STIPPLE | \
+ _NEW_POLYGONSTIPPLE)
+
+
+static void tdfxChooseRenderState(GLcontext *ctx)
+{
+ TNLcontext *tnl = TNL_CONTEXT(ctx);
+ tdfxContextPtr fxMesa = TDFX_CONTEXT(ctx);
+ GLuint flags = ctx->_TriangleCaps;
+ GLuint index = 0;
+
+ if (0) {
+ fxMesa->draw_point = tdfx_draw_point;
+ fxMesa->draw_line = tdfx_draw_line;
+ fxMesa->draw_triangle = tdfx_draw_triangle;
+ index |= TDFX_FALLBACK_BIT;
+ }
+
+ if (flags & (ANY_FALLBACK_FLAGS|ANY_RASTER_FLAGS)) {
+ if (flags & ANY_RASTER_FLAGS) {
+ if (flags & DD_TRI_LIGHT_TWOSIDE) index |= TDFX_TWOSIDE_BIT;
+ if (flags & DD_TRI_OFFSET) index |= TDFX_OFFSET_BIT;
+ if (flags & DD_TRI_UNFILLED) index |= TDFX_UNFILLED_BIT;
+ if (flags & DD_FLATSHADE) index |= TDFX_FLAT_BIT;
+ }
+
+ fxMesa->draw_point = tdfx_draw_point;
+ fxMesa->draw_line = tdfx_draw_line;
+ fxMesa->draw_triangle = tdfx_draw_triangle;
+
+ /* Hook in fallbacks for specific primitives.
+ *
+ * DD_TRI_UNFILLED is here because the unfilled_tri functions use
+ * fxMesa->draw_tri *always*, and thus can't use the multipass
+ * approach to cliprects.
+ *
+ */
+ if (flags & (POINT_FALLBACK|
+ LINE_FALLBACK|
+ TRI_FALLBACK|
+ DD_TRI_STIPPLE|
+ DD_TRI_UNFILLED))
+ {
+ if (flags & POINT_FALLBACK)
+ fxMesa->draw_point = tdfx_fallback_point;
+
+ if (flags & LINE_FALLBACK)
+ fxMesa->draw_line = tdfx_fallback_line;
+
+ if (flags & TRI_FALLBACK)
+ fxMesa->draw_triangle = tdfx_fallback_tri;
+
+ if ((flags & DD_TRI_STIPPLE) && !fxMesa->haveHwStipple)
+ fxMesa->draw_triangle = tdfx_fallback_tri;
+
+ index |= TDFX_FALLBACK_BIT;
+ }
+ }
+
+ if (fxMesa->RenderIndex != index) {
+ fxMesa->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 = tdfx_render_tab_verts;
+ tnl->Driver.Render.PrimTabElts = tdfx_render_tab_elts;
+ tnl->Driver.Render.ClippedLine = line; /* from tritmp.h */
+ tnl->Driver.Render.ClippedPolygon = tdfxFastRenderClippedPoly;
+ } else {
+ tnl->Driver.Render.PrimTabVerts = _tnl_render_tab_verts;
+ tnl->Driver.Render.PrimTabElts = _tnl_render_tab_elts;
+ tnl->Driver.Render.ClippedLine = tdfxRenderClippedLine;
+ tnl->Driver.Render.ClippedPolygon = tdfxRenderClippedPoly;
+ }
+ }
+}
+
+/**********************************************************************/
+/* Use multipass rendering for cliprects */
+/**********************************************************************/
+
+
+
+/* TODO: Benchmark this.
+ * TODO: Use single back-buffer cliprect where possible.
+ * NOTE: <pass> starts at 1, not zero!
+ */
+static GLboolean multipass_cliprect( GLcontext *ctx, GLuint pass )
+{
+ tdfxContextPtr fxMesa = TDFX_CONTEXT(ctx);
+ if (pass >= fxMesa->numClipRects)
+ return GL_FALSE;
+ else {
+ fxMesa->Glide.grClipWindow(fxMesa->pClipRects[pass].x1,
+ fxMesa->screen_height - fxMesa->pClipRects[pass].y2,
+ fxMesa->pClipRects[pass].x2,
+ fxMesa->screen_height - fxMesa->pClipRects[pass].y1);
+
+ return GL_TRUE;
+ }
+}
+
+
+/**********************************************************************/
+/* Runtime render state and callbacks */
+/**********************************************************************/
+
+static void tdfxRunPipeline( GLcontext *ctx )
+{
+ tdfxContextPtr fxMesa = TDFX_CONTEXT(ctx);
+
+ if (fxMesa->new_state) {
+ tdfxDDUpdateHwState( ctx );
+ }
+
+ if (!fxMesa->Fallback && fxMesa->new_gl_state) {
+ if (fxMesa->new_gl_state & _TDFX_NEW_RASTERSETUP)
+ tdfxChooseVertexState( ctx );
+
+ if (fxMesa->new_gl_state & _TDFX_NEW_RENDERSTATE)
+ tdfxChooseRenderState( ctx );
+
+ fxMesa->new_gl_state = 0;
+ }
+
+ _tnl_run_pipeline( ctx );
+}
+
+
+static void tdfxRenderStart( GLcontext *ctx )
+{
+ TNLcontext *tnl = TNL_CONTEXT(ctx);
+ tdfxContextPtr fxMesa = TDFX_CONTEXT(ctx);
+
+ tdfxCheckTexSizes( ctx );
+
+ LOCK_HARDWARE(fxMesa);
+
+ /* Make sure vertex format changes get uploaded before we start
+ * sending triangles.
+ */
+ if (fxMesa->dirty) {
+ tdfxEmitHwStateLocked( fxMesa );
+ }
+
+ if (fxMesa->numClipRects && !(fxMesa->RenderIndex & TDFX_FALLBACK_BIT)) {
+ fxMesa->Glide.grClipWindow(fxMesa->pClipRects[0].x1,
+ fxMesa->screen_height - fxMesa->pClipRects[0].y2,
+ fxMesa->pClipRects[0].x2,
+ fxMesa->screen_height - fxMesa->pClipRects[0].y1);
+ if (fxMesa->numClipRects > 1)
+ tnl->Driver.Render.Multipass = multipass_cliprect;
+ else
+ tnl->Driver.Render.Multipass = NULL;
+ }
+ else
+ tnl->Driver.Render.Multipass = NULL;
+}
+
+
+
+/* Always called between RenderStart and RenderFinish --> We already
+ * hold the lock.
+ */
+static void tdfxRasterPrimitive( GLcontext *ctx, GLenum prim )
+{
+ tdfxContextPtr fxMesa = TDFX_CONTEXT( ctx );
+
+ FLUSH_BATCH( fxMesa );
+
+ fxMesa->raster_primitive = prim;
+
+ tdfxUpdateCull(ctx);
+ if ( fxMesa->dirty & TDFX_UPLOAD_CULL ) {
+ fxMesa->Glide.grCullMode( fxMesa->CullMode );
+ fxMesa->dirty &= ~TDFX_UPLOAD_CULL;
+ }
+
+ tdfxUpdateStipple(ctx);
+ if ( fxMesa->dirty & TDFX_UPLOAD_STIPPLE ) {
+ fxMesa->Glide.grStipplePattern ( fxMesa->Stipple.Pattern );
+ fxMesa->Glide.grStippleMode ( fxMesa->Stipple.Mode );
+ fxMesa->dirty &= ~TDFX_UPLOAD_STIPPLE;
+ }
+}
+
+
+
+/* Determine the rasterized primitive when not drawing unfilled
+ * polygons.
+ *
+ * Used only for the default render stage which always decomposes
+ * primitives to trianges/lines/points. For the accelerated stage,
+ * which renders strips as strips, the equivalent calculations are
+ * performed in tdfx_render.c.
+ */
+static void tdfxRenderPrimitive( GLcontext *ctx, GLenum prim )
+{
+ tdfxContextPtr fxMesa = TDFX_CONTEXT(ctx);
+ GLuint rprim = reduced_prim[prim];
+
+ fxMesa->render_primitive = prim;
+
+ if (rprim == GL_TRIANGLES && (ctx->_TriangleCaps & DD_TRI_UNFILLED))
+ return;
+
+ if (fxMesa->raster_primitive != rprim) {
+ tdfxRasterPrimitive( ctx, rprim );
+ }
+}
+
+static void tdfxRenderFinish( GLcontext *ctx )
+{
+ tdfxContextPtr fxMesa = TDFX_CONTEXT(ctx);
+
+ if (fxMesa->RenderIndex & TDFX_FALLBACK_BIT)
+ _swrast_flush( ctx );
+
+ UNLOCK_HARDWARE(fxMesa);
+}
+
+
+/**********************************************************************/
+/* Manage total rasterization fallbacks */
+/**********************************************************************/
+
+static char *fallbackStrings[] = {
+ "3D/Rect/Cube Texture map",
+ "glDrawBuffer(GL_FRONT_AND_BACK)",
+ "Separate specular color",
+ "glEnable/Disable(GL_STENCIL_TEST)",
+ "glRenderMode(selection or feedback)",
+ "glLogicOp()",
+ "Texture env mode",
+ "Texture border",
+ "glColorMask",
+ "blend mode",
+ "line stipple",
+ "Rasterization disable"
+};
+
+
+static char *getFallbackString(GLuint bit)
+{
+ int i = 0;
+ while (bit > 1) {
+ i++;
+ bit >>= 1;
+ }
+ return fallbackStrings[i];
+}
+
+
+void tdfxFallback( GLcontext *ctx, GLuint bit, GLboolean mode )
+{
+ TNLcontext *tnl = TNL_CONTEXT(ctx);
+ tdfxContextPtr fxMesa = TDFX_CONTEXT(ctx);
+ GLuint oldfallback = fxMesa->Fallback;
+
+ if (mode) {
+ fxMesa->Fallback |= bit;
+ if (oldfallback == 0) {
+ /*printf("Go to software rendering, bit = 0x%x\n", bit);*/
+ FLUSH_BATCH(fxMesa);
+ _swsetup_Wakeup( ctx );
+ fxMesa->RenderIndex = ~0;
+ if (TDFX_DEBUG & DEBUG_VERBOSE_FALL) {
+ fprintf(stderr, "Tdfx begin software fallback: 0x%x %s\n",
+ bit, getFallbackString(bit));
+ }
+ }
+ }
+ else {
+ fxMesa->Fallback &= ~bit;
+ if (oldfallback == bit) {
+ /*printf("Go to hardware rendering, bit = 0x%x\n", bit);*/
+ _swrast_flush( ctx );
+ tnl->Driver.Render.Start = tdfxRenderStart;
+ tnl->Driver.Render.PrimitiveNotify = tdfxRenderPrimitive;
+ tnl->Driver.Render.Finish = tdfxRenderFinish;
+ tnl->Driver.Render.BuildVertices = tdfxBuildVertices;
+ fxMesa->new_gl_state |= (_TDFX_NEW_RENDERSTATE|
+ _TDFX_NEW_RASTERSETUP);
+ if (TDFX_DEBUG & DEBUG_VERBOSE_FALL) {
+ fprintf(stderr, "Tdfx end software fallback: 0x%x %s\n",
+ bit, getFallbackString(bit));
+ }
+ }
+ }
+}
+
+
+void tdfxDDInitTriFuncs( GLcontext *ctx )
+{
+ TNLcontext *tnl = TNL_CONTEXT(ctx);
+ tdfxContextPtr fxMesa = TDFX_CONTEXT(ctx);
+ static int firsttime = 1;
+
+ if (firsttime) {
+ init_rast_tab();
+ firsttime = 0;
+ }
+
+ fxMesa->RenderIndex = ~0;
+
+ tnl->Driver.RunPipeline = tdfxRunPipeline;
+ tnl->Driver.Render.Start = tdfxRenderStart;
+ tnl->Driver.Render.Finish = tdfxRenderFinish;
+ tnl->Driver.Render.PrimitiveNotify = tdfxRenderPrimitive;
+ tnl->Driver.Render.ResetLineStipple = _swrast_ResetLineStipple;
+ tnl->Driver.Render.BuildVertices = tdfxBuildVertices;
+ tnl->Driver.Render.Multipass = NULL;
+
+ (void) tdfx_print_vertex;
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-06-30 13:31:27 +0000