added Window-isms previously in gl.h

[mesa.git] / src / mesa / main / feedback.c

diff --git a/src/mesa/main/feedback.c b/src/mesa/main/feedback.c
index 71c1025d901c9c56afb1191209a0f5597dd8b85d..af08236989610ed0678022db5c4ecdeb6efaf24c 100644 (file)
--- a/src/mesa/main/feedback.c
+++ b/src/mesa/main/feedback.c
@@ -1,4 +1,4 @@
-/* $Id: feedback.c,v 1.8 2000/01/25 16:49:20 brianp Exp $ */
+/* $Id: feedback.c,v 1.10 2000/05/09 23:54:09 brianp Exp $ */
 
 /*
  * Mesa 3-D graphics library
@@ -168,7 +168,7 @@ static void feedback_vertex( GLcontext *ctx, GLuint v, GLuint pv )
 
    win[0] = VB->Win.data[v][0];
    win[1] = VB->Win.data[v][1];
-   win[2] = VB->Win.data[v][2] / DEPTH_SCALE;
+   win[2] = VB->Win.data[v][2] / ctx->Visual->DepthMaxF;
    win[3] = 1.0 / VB->Win.data[v][3];
 
    if (ctx->Light.ShadeModel == GL_SMOOTH)
@@ -299,12 +299,13 @@ void gl_update_hitflag( GLcontext *ctx, GLfloat z )
 void gl_select_triangle( GLcontext *ctx,
                         GLuint v0, GLuint v1, GLuint v2, GLuint pv )
 {
-   struct vertex_buffer *VB = ctx->VB;
+   const struct vertex_buffer *VB = ctx->VB;
 
    if (gl_cull_triangle( ctx, v0, v1, v2, 0 )) {
-      gl_update_hitflag( ctx, VB->Win.data[v0][2] / DEPTH_SCALE );
-      gl_update_hitflag( ctx, VB->Win.data[v1][2] / DEPTH_SCALE );
-      gl_update_hitflag( ctx, VB->Win.data[v2][2] / DEPTH_SCALE );
+      const GLfloat zs = 1.0F / ctx->Visual->DepthMaxF;
+      gl_update_hitflag( ctx, VB->Win.data[v0][2] * zs );
+      gl_update_hitflag( ctx, VB->Win.data[v1][2] * zs );
+      gl_update_hitflag( ctx, VB->Win.data[v2][2] * zs );
    }
 }
 
@@ -312,21 +313,22 @@ void gl_select_triangle( GLcontext *ctx,
 void gl_select_line( GLcontext *ctx,
                     GLuint v0, GLuint v1, GLuint pv )
 {
-   struct vertex_buffer *VB = ctx->VB;
-
-   gl_update_hitflag( ctx, VB->Win.data[v0][2] / DEPTH_SCALE );
-   gl_update_hitflag( ctx, VB->Win.data[v1][2] / DEPTH_SCALE );
+   const struct vertex_buffer *VB = ctx->VB;
+   const GLfloat zs = 1.0F / ctx->Visual->DepthMaxF;
+   gl_update_hitflag( ctx, VB->Win.data[v0][2] * zs );
+   gl_update_hitflag( ctx, VB->Win.data[v1][2] * zs );
 }
 
 
 void gl_select_points( GLcontext *ctx, GLuint first, GLuint last )
 {
    struct vertex_buffer *VB = ctx->VB;
+   const GLfloat zs = 1.0F / ctx->Visual->DepthMaxF;
    GLuint i;
 
    for (i=first;i<=last;i++) {
       if (VB->ClipMask[i]==0) {
-         gl_update_hitflag( ctx, VB->Win.data[i][2] / DEPTH_SCALE);
+         gl_update_hitflag( ctx, VB->Win.data[i][2] * zs );
       }
    }
 }