-/* $Id: ss_triangle.c,v 1.16 2002/10/02 21:44:08 brianp Exp $ */
-
/*
* Mesa 3-D graphics library
- * Version: 3.5
*
- * Copyright (C) 1999-2001 Brian Paul All Rights Reserved.
+ * Copyright (C) 1999-2007 Brian Paul 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"),
* 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
- * BRIAN PAUL 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.
+ * THE AUTHORS OR COPYRIGHT HOLDERS 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.
*
* Authors:
- * Keith Whitwell <keithw@valinux.com>
+ * Keith Whitwell <keithw@vmware.com>
*/
-#include "glheader.h"
-#include "colormac.h"
-#include "macros.h"
-#include "mtypes.h"
+#include "c99_math.h"
+#include "main/glheader.h"
+#include "main/colormac.h"
+#include "main/macros.h"
+#include "main/mtypes.h"
#include "tnl/t_context.h"
#include "ss_triangle.h"
#include "ss_context.h"
-#define SS_RGBA_BIT 0x1
-#define SS_OFFSET_BIT 0x2
-#define SS_TWOSIDE_BIT 0x4
-#define SS_UNFILLED_BIT 0x8
-#define SS_MAX_TRIFUNC 0x10
+#define SS_OFFSET_BIT 0x1
+#define SS_TWOSIDE_BIT 0x2
+#define SS_UNFILLED_BIT 0x4
+#define SS_MAX_TRIFUNC 0x8
-static triangle_func tri_tab[SS_MAX_TRIFUNC];
-static quad_func quad_tab[SS_MAX_TRIFUNC];
+static tnl_triangle_func tri_tab[SS_MAX_TRIFUNC];
+static tnl_quad_func quad_tab[SS_MAX_TRIFUNC];
-static void _swsetup_render_line_tri( GLcontext *ctx,
- GLuint e0, GLuint e1, GLuint e2 )
+/*
+ * Render a triangle respecting edge flags.
+ */
+typedef void (* swsetup_edge_render_prim_tri)(struct gl_context *ctx,
+ const GLubyte *ef,
+ GLuint e0,
+ GLuint e1,
+ GLuint e2,
+ const SWvertex *v0,
+ const SWvertex *v1,
+ const SWvertex *v2);
+
+/*
+ * Render a triangle using lines and respecting edge flags.
+ */
+static void
+_swsetup_edge_render_line_tri(struct gl_context *ctx,
+ const GLubyte *ef,
+ GLuint e0,
+ GLuint e1,
+ GLuint e2,
+ const SWvertex *v0,
+ const SWvertex *v1,
+ const SWvertex *v2)
{
SScontext *swsetup = SWSETUP_CONTEXT(ctx);
- struct vertex_buffer *VB = &TNL_CONTEXT(ctx)->vb;
- GLubyte *ef = VB->EdgeFlag;
- SWvertex *verts = swsetup->verts;
- SWvertex *v0 = &verts[e0];
- SWvertex *v1 = &verts[e1];
- SWvertex *v2 = &verts[e2];
- GLchan c[2][4];
- GLchan s[2][4];
- GLuint i[2];
-
- if (ctx->_TriangleCaps & DD_FLATSHADE) {
- COPY_CHAN4(c[0], v0->color);
- COPY_CHAN4(c[1], v1->color);
- COPY_CHAN4(s[0], v0->specular);
- COPY_CHAN4(s[1], v1->specular);
- i[0] = v0->index;
- i[1] = v1->index;
-
- COPY_CHAN4(v0->color, v2->color);
- COPY_CHAN4(v1->color, v2->color);
- COPY_CHAN4(v0->specular, v2->specular);
- COPY_CHAN4(v1->specular, v2->specular);
- v0->index = v2->index;
- v1->index = v2->index;
- }
if (swsetup->render_prim == GL_POLYGON) {
if (ef[e2]) _swrast_Line( ctx, v2, v0 );
if (ef[e1]) _swrast_Line( ctx, v1, v2 );
if (ef[e2]) _swrast_Line( ctx, v2, v0 );
}
+}
- if (ctx->_TriangleCaps & DD_FLATSHADE) {
- COPY_CHAN4(v0->color, c[0]);
- COPY_CHAN4(v1->color, c[1]);
- COPY_CHAN4(v0->specular, s[0]);
- COPY_CHAN4(v1->specular, s[1]);
- v0->index = i[0];
- v1->index = i[1];
- }
+/*
+ * Render a triangle using points and respecting edge flags.
+ */
+static void
+_swsetup_edge_render_point_tri(struct gl_context *ctx,
+ const GLubyte *ef,
+ GLuint e0,
+ GLuint e1,
+ GLuint e2,
+ const SWvertex *v0,
+ const SWvertex *v1,
+ const SWvertex *v2)
+{
+ if (ef[e0]) _swrast_Point( ctx, v0 );
+ if (ef[e1]) _swrast_Point( ctx, v1 );
+ if (ef[e2]) _swrast_Point( ctx, v2 );
+
+ _swrast_flush(ctx);
}
-static void _swsetup_render_point_tri( GLcontext *ctx,
- GLuint e0, GLuint e1, GLuint e2 )
+/*
+ * Render a triangle respecting cull and shade model.
+ */
+static void _swsetup_render_tri(struct gl_context *ctx,
+ GLuint e0,
+ GLuint e1,
+ GLuint e2,
+ GLuint facing,
+ swsetup_edge_render_prim_tri render)
{
SScontext *swsetup = SWSETUP_CONTEXT(ctx);
struct vertex_buffer *VB = &TNL_CONTEXT(ctx)->vb;
SWvertex *v0 = &verts[e0];
SWvertex *v1 = &verts[e1];
SWvertex *v2 = &verts[e2];
- GLchan c[2][4];
- GLchan s[2][4];
- GLuint i[2];
- if (ctx->_TriangleCaps & DD_FLATSHADE) {
+ /* cull testing */
+ if (ctx->Polygon.CullFlag) {
+ if (facing == 1 && ctx->Polygon.CullFaceMode != GL_FRONT)
+ return;
+ if (facing == 0 && ctx->Polygon.CullFaceMode != GL_BACK)
+ return;
+ }
+
+ _swrast_SetFacing(ctx, facing);
+
+ if (ctx->Light.ShadeModel == GL_FLAT) {
+ GLchan c[2][4];
+ GLfloat s[2][4];
+
+ /* save colors/indexes for v0, v1 vertices */
COPY_CHAN4(c[0], v0->color);
COPY_CHAN4(c[1], v1->color);
- COPY_CHAN4(s[0], v0->specular);
- COPY_CHAN4(s[1], v1->specular);
- i[0] = v0->index;
- i[1] = v1->index;
+ COPY_4V(s[0], v0->attrib[VARYING_SLOT_COL1]);
+ COPY_4V(s[1], v1->attrib[VARYING_SLOT_COL1]);
+ /* copy v2 color/indexes to v0, v1 indexes */
COPY_CHAN4(v0->color, v2->color);
COPY_CHAN4(v1->color, v2->color);
- COPY_CHAN4(v0->specular, v2->specular);
- COPY_CHAN4(v1->specular, v2->specular);
- v0->index = v2->index;
- v1->index = v2->index;
- }
+ COPY_4V(v0->attrib[VARYING_SLOT_COL1], v2->attrib[VARYING_SLOT_COL1]);
+ COPY_4V(v1->attrib[VARYING_SLOT_COL1], v2->attrib[VARYING_SLOT_COL1]);
- if (ef[e0]) _swrast_Point( ctx, v0 );
- if (ef[e1]) _swrast_Point( ctx, v1 );
- if (ef[e2]) _swrast_Point( ctx, v2 );
+ render(ctx, ef, e0, e1, e2, v0, v1, v2);
- if (ctx->_TriangleCaps & DD_FLATSHADE) {
COPY_CHAN4(v0->color, c[0]);
COPY_CHAN4(v1->color, c[1]);
- COPY_CHAN4(v0->specular, s[0]);
- COPY_CHAN4(v1->specular, s[1]);
- v0->index = i[0];
- v1->index = i[1];
+ COPY_4V(v0->attrib[VARYING_SLOT_COL1], s[0]);
+ COPY_4V(v1->attrib[VARYING_SLOT_COL1], s[1]);
+ }
+ else {
+ render(ctx, ef, e0, e1, e2, v0, v1, v2);
}
}
-#define SS_COLOR(a,b) COPY_CHAN4(a,b)
-#define SS_SPEC(a,b) COPY_3V(a,b)
+#define SS_COLOR(a,b) UNCLAMPED_FLOAT_TO_RGBA_CHAN(a,b)
+#define SS_SPEC(a,b) COPY_4V(a,b)
#define SS_IND(a,b) (a = b)
#define IND (0)
-#define TAG(x) x
-#include "ss_tritmp.h"
-
-#define IND (SS_OFFSET_BIT)
-#define TAG(x) x##_offset
-#include "ss_tritmp.h"
-
-#define IND (SS_TWOSIDE_BIT)
-#define TAG(x) x##_twoside
-#include "ss_tritmp.h"
-
-#define IND (SS_OFFSET_BIT|SS_TWOSIDE_BIT)
-#define TAG(x) x##_offset_twoside
-#include "ss_tritmp.h"
-
-#define IND (SS_UNFILLED_BIT)
-#define TAG(x) x##_unfilled
-#include "ss_tritmp.h"
-
-#define IND (SS_OFFSET_BIT|SS_UNFILLED_BIT)
-#define TAG(x) x##_offset_unfilled
-#include "ss_tritmp.h"
-
-#define IND (SS_TWOSIDE_BIT|SS_UNFILLED_BIT)
-#define TAG(x) x##_twoside_unfilled
-#include "ss_tritmp.h"
-
-#define IND (SS_OFFSET_BIT|SS_TWOSIDE_BIT|SS_UNFILLED_BIT)
-#define TAG(x) x##_offset_twoside_unfilled
-#include "ss_tritmp.h"
-
-#define IND (0|SS_RGBA_BIT)
#define TAG(x) x##_rgba
#include "ss_tritmp.h"
-#define IND (SS_OFFSET_BIT|SS_RGBA_BIT)
+#define IND (SS_OFFSET_BIT)
#define TAG(x) x##_offset_rgba
#include "ss_tritmp.h"
-#define IND (SS_TWOSIDE_BIT|SS_RGBA_BIT)
+#define IND (SS_TWOSIDE_BIT)
#define TAG(x) x##_twoside_rgba
#include "ss_tritmp.h"
-#define IND (SS_OFFSET_BIT|SS_TWOSIDE_BIT|SS_RGBA_BIT)
+#define IND (SS_OFFSET_BIT|SS_TWOSIDE_BIT)
#define TAG(x) x##_offset_twoside_rgba
#include "ss_tritmp.h"
-#define IND (SS_UNFILLED_BIT|SS_RGBA_BIT)
+#define IND (SS_UNFILLED_BIT)
#define TAG(x) x##_unfilled_rgba
#include "ss_tritmp.h"
-#define IND (SS_OFFSET_BIT|SS_UNFILLED_BIT|SS_RGBA_BIT)
+#define IND (SS_OFFSET_BIT|SS_UNFILLED_BIT)
#define TAG(x) x##_offset_unfilled_rgba
#include "ss_tritmp.h"
-#define IND (SS_TWOSIDE_BIT|SS_UNFILLED_BIT|SS_RGBA_BIT)
+#define IND (SS_TWOSIDE_BIT|SS_UNFILLED_BIT)
#define TAG(x) x##_twoside_unfilled_rgba
#include "ss_tritmp.h"
-#define IND (SS_OFFSET_BIT|SS_TWOSIDE_BIT|SS_UNFILLED_BIT|SS_RGBA_BIT)
+#define IND (SS_OFFSET_BIT|SS_TWOSIDE_BIT|SS_UNFILLED_BIT)
#define TAG(x) x##_offset_twoside_unfilled_rgba
#include "ss_tritmp.h"
-void _swsetup_trifuncs_init( GLcontext *ctx )
+void _swsetup_trifuncs_init( struct gl_context *ctx )
{
(void) ctx;
- init();
- init_offset();
- init_twoside();
- init_offset_twoside();
- init_unfilled();
- init_offset_unfilled();
- init_twoside_unfilled();
- init_offset_twoside_unfilled();
-
init_rgba();
init_offset_rgba();
init_twoside_rgba();
}
-static void swsetup_points( GLcontext *ctx, GLuint first, GLuint last )
+static void swsetup_points( struct gl_context *ctx, GLuint first, GLuint last )
{
struct vertex_buffer *VB = &TNL_CONTEXT(ctx)->vb;
SWvertex *verts = SWSETUP_CONTEXT(ctx)->verts;
}
}
-static void swsetup_line( GLcontext *ctx, GLuint v0, GLuint v1 )
+static void swsetup_line( struct gl_context *ctx, GLuint v0, GLuint v1 )
{
SWvertex *verts = SWSETUP_CONTEXT(ctx)->verts;
_swrast_Line( ctx, &verts[v0], &verts[v1] );
-void _swsetup_choose_trifuncs( GLcontext *ctx )
+void _swsetup_choose_trifuncs( struct gl_context *ctx )
{
TNLcontext *tnl = TNL_CONTEXT(ctx);
GLuint ind = 0;
ctx->Polygon.OffsetFill)
ind |= SS_OFFSET_BIT;
- if (ctx->Light.Enabled && ctx->Light.Model.TwoSide)
+ if ((ctx->Light.Enabled && ctx->Light.Model.TwoSide) ||
+ (ctx->VertexProgram._Current && ctx->VertexProgram.TwoSideEnabled))
ind |= SS_TWOSIDE_BIT;
- if (ctx->_TriangleCaps & DD_TRI_UNFILLED)
+ /* We piggyback the two-sided stencil front/back determination on the
+ * unfilled triangle path.
+ */
+ if (ctx->Polygon.FrontMode != GL_FILL ||
+ ctx->Polygon.BackMode != GL_FILL ||
+ (ctx->Stencil.Enabled && ctx->Stencil._TestTwoSide))
ind |= SS_UNFILLED_BIT;
- if (ctx->Visual.rgbMode)
- ind |= SS_RGBA_BIT;
-
tnl->Driver.Render.Triangle = tri_tab[ind];
tnl->Driver.Render.Quad = quad_tab[ind];
tnl->Driver.Render.Line = swsetup_line;
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