Demos (master): fpglsl: Add frag depth read

[Jakob Bornecrantz]

Module: Demos
Branch: master
Commit: 7ca39e866fc9f87214438d7c16a153bad3d8e881
URL:    http://cgit.freedesktop.org/mesa/demos/commit/?id=7ca39e866fc9f87214438d7c16a153bad3d8e881

Author: Jakob Bornecrantz <jakob at vmware.com>
Date:   Wed Mar  9 15:12:26 2011 +0000

fpglsl: Add frag depth read

---

 src/fpglsl/depth-read.glsl |    4 ++++
 src/fpglsl/fp-tri.c        |    2 +-
 2 files changed, 5 insertions(+), 1 deletions(-)

diff --git a/src/fpglsl/depth-read.glsl b/src/fpglsl/depth-read.glsl
new file mode 100644
index 0000000..86d298e
--- /dev/null
+++ b/src/fpglsl/depth-read.glsl
@@ -0,0 +1,4 @@
+void main()
+{
+   gl_FragColor = gl_FragCoord.zzzz;
+}
diff --git a/src/fpglsl/fp-tri.c b/src/fpglsl/fp-tri.c
index 4563124..5fa0821 100644
--- a/src/fpglsl/fp-tri.c
+++ b/src/fpglsl/fp-tri.c
@@ -386,7 +386,7 @@ static void Display(void)
 
    glColor3f(0,0,1);
    glTexCoord3f(1,1,0);
-   glVertex3f( 0.9, -0.9, -30.0);
+   glVertex3f( 0.9, -0.9, -970.0);
 
    glColor3f(1,0,0);
    glTexCoord3f(1,-1,0);