Import of XFree86 3.9.18X_3_9_18

1 files changed, 189 insertions, 0 deletions

diff --git a/xc/lib/GL/mesa/src/drv/mga/mgatris.h b/xc/lib/GL/mesa/src/drv/mga/mgatris.h
new file mode 100644
index 000000000..3b41900f1
--- /dev/null
+++ b/xc/lib/GL/mesa/src/drv/mga/mgatris.h
@@ -0,0 +1,189 @@
+/*
+ * GLX Hardware Device Driver for Matrox Millenium G200
+ * Copyright (C) 1999 Wittawat Yamwong
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * WITTAWAT YAMWONG, OR ANY OTHER CONTRIBUTORS 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.
+ *
+ *
+ *    Wittawat Yamwong <Wittawat.Yamwong@stud.uni-hannover.de>
+ */
+
+#ifndef MGATIS_INC
+#define MGATIS_INC
+
+#include "types.h"
+
+extern void mgaDDChooseRenderState(GLcontext *ctx);
+extern void mgaDDTrifuncInit( void );
+
+
+/* Todo: 
+ *    - multidraw, ...
+ *    - Antialiasing (?)
+ *    - line and polygon stipple
+ *    - select and feedback 
+ *    - stencil 
+ *    - point parameters
+ *    - 
+ */
+#define MGA_ANTIALIAS_BIT   0       /* ignored for now, no fallback */
+#define MGA_FLAT_BIT	0x1
+#define MGA_OFFSET_BIT	0x2	/* 3.1 only */
+#define MGA_TWOSIDE_BIT	0x4	/* 3.1 only */
+#define MGA_NODRAW_BIT	0x8
+#define MGA_FALLBACK_BIT	0x10
+
+/* Not in use:
+ */
+#define MGA_FEEDBACK_BIT    0x20
+#define MGA_SELECT_BIT      0x40
+#define MGA_POINT_PARAM_BIT 0x80	/* not needed? */
+
+
+
+
+static __inline void mga_draw_triangle( mgaContextPtr mmesa,
+				      mgaVertex *v0, 
+				      mgaVertex *v1, 
+				      mgaVertex *v2 )
+{
+   mgaUI32 vertsize = mmesa->vertsize;
+   mgaUI32 *wv = mgaAllocVertexDwords( mmesa, 3 * vertsize );
+   int j;
+
+   for (j = 0 ; j < vertsize ; j++) 
+      wv[j] = v0->ui[j];
+
+   wv += vertsize;
+   for (j = 0 ; j < vertsize ; j++) 
+      wv[j] = v1->ui[j];
+
+   wv += vertsize;
+   for (j = 0 ; j < vertsize ; j++) 
+      wv[j] = v2->ui[j];
+}
+
+
+static __inline void mga_draw_point( mgaContextPtr mmesa,
+				   mgaVertex *tmp, float sz )
+{
+   mgaUI32 vertsize = mmesa->vertsize;
+   mgaUI32 *wv = mgaAllocVertexDwords( mmesa, 6*vertsize);
+   int j;
+
+   *(float *)&wv[0] = tmp->warp1.x - sz;
+   *(float *)&wv[1] = tmp->warp1.y - sz;
+   for (j = 2 ; j < vertsize ; j++) 
+      wv[j] = tmp->ui[j];
+   wv += vertsize;
+
+   *(float *)&wv[0] = tmp->warp1.x + sz;
+   *(float *)&wv[1] = tmp->warp1.y - sz;
+   for (j = 2 ; j < vertsize ; j++) 
+      wv[j] = tmp->ui[j];
+   wv += vertsize;
+
+   *(float *)&wv[0] = tmp->warp1.x + sz;
+   *(float *)&wv[1] = tmp->warp1.y + sz;
+   for (j = 2 ; j < vertsize ; j++) 
+      wv[j] = tmp->ui[j];
+   wv += vertsize;
+
+   *(float *)&wv[0] = tmp->warp1.x + sz;
+   *(float *)&wv[1] = tmp->warp1.y + sz;
+   for (j = 2 ; j < vertsize ; j++) 
+      wv[j] = tmp->ui[j];
+   wv += vertsize;
+
+   *(float *)&wv[0] = tmp->warp1.x - sz;
+   *(float *)&wv[1] = tmp->warp1.y + sz;
+   for (j = 2 ; j < vertsize ; j++) 
+      wv[j] = tmp->ui[j];
+   wv += vertsize;
+
+   *(float *)&wv[0] = tmp->warp1.x - sz;
+   *(float *)&wv[1] = tmp->warp1.y - sz;
+   for (j = 2 ; j < vertsize ; j++) 
+      wv[j] = tmp->ui[j];
+}
+
+
+static __inline void mga_draw_line( mgaContextPtr mmesa,
+				  const mgaVertex *tmp0, 
+				  const mgaVertex *tmp1,
+				  float width )
+{
+   mgaUI32 vertsize = mmesa->vertsize;
+   mgaUI32 *wv = mgaAllocVertexDwords( mmesa, 6 * vertsize );
+   float dx, dy, ix, iy;
+   int j;
+
+   dx = tmp0->warp1.x - tmp1->warp1.x;
+   dy = tmp0->warp1.y - tmp1->warp1.y;
+
+   ix = width * .5; iy = 0;
+  
+   if ((ix<.5) && (ix>0.1)) ix = .5; /* I want to see lines with width
+                                        0.5 also */
+  
+   if (dx * dx > dy * dy) {
+      iy = ix; ix = 0;
+   }
+  
+   *(float *)&wv[0] = tmp0->warp1.x - ix;
+   *(float *)&wv[1] = tmp0->warp1.y - iy;
+   for (j = 2 ; j < vertsize ; j++) 
+      wv[j] = tmp0->ui[j];
+   wv += vertsize;
+
+   *(float *)&wv[0] = tmp1->warp1.x + ix;
+   *(float *)&wv[1] = tmp1->warp1.y + iy;
+   for (j = 2 ; j < vertsize ; j++) 
+      wv[j] = tmp1->ui[j];
+   wv += vertsize;
+
+   *(float *)&wv[0] = tmp0->warp1.x + ix;
+   *(float *)&wv[1] = tmp0->warp1.y + iy;
+   for (j = 2 ; j < vertsize ; j++) 
+      wv[j] = tmp0->ui[j];
+   wv += vertsize;
+	 
+   *(float *)&wv[0] = tmp0->warp1.x - ix;
+   *(float *)&wv[1] = tmp0->warp1.y - iy;
+   for (j = 2 ; j < vertsize ; j++) 
+      wv[j] = tmp0->ui[j];
+   wv += vertsize;
+
+   *(float *)&wv[0] = tmp1->warp1.x - ix;
+   *(float *)&wv[1] = tmp1->warp1.y - iy;
+   for (j = 2 ; j < vertsize ; j++) 
+      wv[j] = tmp1->ui[j];
+   wv += vertsize;
+
+   *(float *)&wv[0] = tmp1->warp1.x + ix;
+   *(float *)&wv[1] = tmp1->warp1.y + iy;
+   for (j = 2 ; j < vertsize ; j++) 
+      wv[j] = tmp1->ui[j];
+   wv += vertsize;
+}
+
+
+
+
+#endif