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to take into account 16 bits colorspaces, we only use the 5 highest bits of the red channel

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this fixes bug #1310


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@23793 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
Jérôme Duval
2008-01-30 19:07:44 +00:00
parent 7a35b205fe
commit cee437c504
1 changed files with 5 additions and 4 deletions
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src/apps/glteapot/ObjectView.cpp
+3 -2
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@@ -373,7 +373,8 @@ ObjectView::ObjectAtPoint(BPoint p)
float f[3]; float f[3];
f[1] = f[2] = 0; f[1] = f[2] = 0;
for (int i = 0; i < fObjects.CountItems(); i++) { for (int i = 0; i < fObjects.CountItems(); i++) {
f[0] = (255 - i) / 255.0; // to take into account 16 bits colorspaces, only use the 5 highest bits of the red channel
f[0] = (255 - (i << 3)) / 255.0;
((GLObject*)fObjects.ItemAt(i))->Draw(true, f); ((GLObject*)fObjects.ItemAt(i))->Draw(true, f);
} }
glReadBuffer(GL_BACK); glReadBuffer(GL_BACK);
@@ -381,7 +382,7 @@ ObjectView::ObjectAtPoint(BPoint p)
glReadPixels((GLint)p.x, (GLint)(Bounds().bottom - p.y), 1, 1, glReadPixels((GLint)p.x, (GLint)(Bounds().bottom - p.y), 1, 1,
GL_RGB, GL_UNSIGNED_BYTE, pixel); GL_RGB, GL_UNSIGNED_BYTE, pixel);
int objNum = pixel[0]; int objNum = pixel[0];
objNum = 255 - objNum; objNum = (255 - objNum) >> 3;
EnforceState(); EnforceState();
UnlockGL(); UnlockGL();