Mesa (7.8): swrast: remove unused compute_coveragei() function

[Brian Paul]

Module: Mesa
Branch: 7.8
Commit: 3828910d0e51cd5fb7d4ebcde8bfc98a84b57b06
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=3828910d0e51cd5fb7d4ebcde8bfc98a84b57b06

Author: Brian Paul <brianp at vmware.com>
Date:   Wed Mar 17 08:41:47 2010 -0600

swrast: remove unused compute_coveragei() function

---

 src/mesa/swrast/s_aatriangle.c |   82 ----------------------------------------
 1 files changed, 0 insertions(+), 82 deletions(-)

diff --git a/src/mesa/swrast/s_aatriangle.c b/src/mesa/swrast/s_aatriangle.c
index fe3338e..1d90f32 100644
--- a/src/mesa/swrast/s_aatriangle.c
+++ b/src/mesa/swrast/s_aatriangle.c
@@ -268,88 +268,6 @@ compute_coveragef(const GLfloat v0[3], const GLfloat v1[3],
 
 
 
-/*
- * Compute how much (area) of the given pixel is inside the triangle.
- * Vertices MUST be specified in counter-clockwise order.
- * Return:  coverage in [0, 15].
- */
-static GLint
-compute_coveragei(const GLfloat v0[3], const GLfloat v1[3],
-                  const GLfloat v2[3], GLint winx, GLint winy)
-{
-   /* NOTE: 15 samples instead of 16. */
-   static const GLfloat samples[15][2] = {
-      /* start with the four corners */
-      { POS(0, 2), POS(0, 0) },
-      { POS(3, 3), POS(0, 2) },
-      { POS(0, 0), POS(3, 1) },
-      { POS(3, 1), POS(3, 3) },
-      /* continue with interior samples */
-      { POS(1, 1), POS(0, 1) },
-      { POS(2, 0), POS(0, 3) },
-      { POS(0, 3), POS(1, 3) },
-      { POS(1, 2), POS(1, 0) },
-      { POS(2, 3), POS(1, 2) },
-      { POS(3, 2), POS(1, 1) },
-      { POS(0, 1), POS(2, 2) },
-      { POS(1, 0), POS(2, 1) },
-      { POS(2, 1), POS(2, 3) },
-      { POS(3, 0), POS(2, 0) },
-      { POS(1, 3), POS(3, 0) }
-   };
-   const GLfloat x = (GLfloat) winx;
-   const GLfloat y = (GLfloat) winy;
-   const GLfloat dx0 = v1[0] - v0[0];
-   const GLfloat dy0 = v1[1] - v0[1];
-   const GLfloat dx1 = v2[0] - v1[0];
-   const GLfloat dy1 = v2[1] - v1[1];
-   const GLfloat dx2 = v0[0] - v2[0];
-   const GLfloat dy2 = v0[1] - v2[1];
-   GLint stop = 4, i;
-   GLint insideCount = 15;
-
-#ifdef DEBUG
-   {
-      const GLfloat area = dx0 * dy1 - dx1 * dy0;
-      ASSERT(area >= 0.0);
-   }
-#endif
-
-   for (i = 0; i < stop; i++) {
-      const GLfloat sx = x + samples[i][0];
-      const GLfloat sy = y + samples[i][1];
-      const GLfloat fx0 = sx - v0[0];
-      const GLfloat fy0 = sy - v0[1];
-      const GLfloat fx1 = sx - v1[0];
-      const GLfloat fy1 = sy - v1[1];
-      const GLfloat fx2 = sx - v2[0];
-      const GLfloat fy2 = sy - v2[1];
-      /* cross product determines if sample is inside or outside each edge */
-      GLfloat cross0 = (dx0 * fy0 - dy0 * fx0);
-      GLfloat cross1 = (dx1 * fy1 - dy1 * fx1);
-      GLfloat cross2 = (dx2 * fy2 - dy2 * fx2);
-      /* Check if the sample is exactly on an edge.  If so, let cross be a
-       * positive or negative value depending on the direction of the edge.
-       */
-      if (cross0 == 0.0F)
-         cross0 = dx0 + dy0;
-      if (cross1 == 0.0F)
-         cross1 = dx1 + dy1;
-      if (cross2 == 0.0F)
-         cross2 = dx2 + dy2;
-      if (cross0 < 0.0F || cross1 < 0.0F || cross2 < 0.0F) {
-         /* point is outside triangle */
-         insideCount--;
-         stop = 15;
-      }
-   }
-   if (stop == 4)
-      return 15;
-   else
-      return insideCount;
-}
-
-
 static void
 rgba_aa_tri(GLcontext *ctx,
 	    const SWvertex *v0,