Fix gl_FragCoord.

Landing patch from this Chromium issue: http://code.google.com/p/chromium/issues/detail?id=82166 Review URL: http://codereview.appspot.com/4528055 git-svn-id: https://angleproject.googlecode.com/svn/trunk@647 736b8ea6-26fd-11df-bfd4-992fa37f6226

Fix gl_FragCoord.
b1092bf3 · apatrick@chromium.org · a5fd7a5a · b1092bf3 · b1092bf3
Commit b1092bf3 authored May 11, 2011 by apatrick@chromium.org
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Showing with 3 additions and 3 deletions

version.h src/common/version.h +1 -1

Program.cpp src/libGLESv2/Program.cpp +2 -2

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--- a/src/common/version.h
+++ b/src/common/version.h
 #define MAJOR_VERSION 0
 #define MINOR_VERSION 0
 #define BUILD_VERSION 0
-#define BUILD_REVISION 646
+#define BUILD_REVISION 647
 #define STRINGIFY(x) #x
 #define MACRO_STRINGIFY(x) STRINGIFY(x)

--- a/src/libGLESv2/Program.cpp
+++ b/src/libGLESv2/Program.cpp
@@ -1456,8 +1456,8 @@ bool Program::linkVaryings()
    {
        mPixelHLSL += "    float rhw = 1.0 / input.gl_FragCoord.w;\n";
        if (sm3) {
-            mPixelHLSL += "    gl_FragCoord.x = input.dx_VPos.x;\n"
+            mPixelHLSL += "    gl_FragCoord.x = input.dx_VPos.x + 0.5;\n"
-                          "    gl_FragCoord.y = 2.0 * dx_Viewport.y - input.dx_VPos.y;\n";
+                          "    gl_FragCoord.y = 2.0 * dx_Viewport.y - input.dx_VPos.y - 0.5;\n";
        } else {
            mPixelHLSL += "    gl_FragCoord.x = (input.gl_FragCoord.x * rhw) * dx_Viewport.x + dx_Viewport.z;\n"
                          "    gl_FragCoord.y = -(input.gl_FragCoord.y * rhw) * dx_Viewport.y + dx_Viewport.w;\n";