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#ActualRobMaddison

Posted 20 January 2013 - 02:22 PM

Hi

When you want to show something like a health bar, a map, score or number of lives etc, I thought you might have to setup a specific view projection matrix, etc, but I just 'accidentally' did it by creating the graphic bounds using interpolated view projected vertices, e.g., the whole screen would be x and y -1,-1 to 1,1 respectively. In the vertex shader I just don't use a matrix to transform it and it works.

Is this how it's normally done anyway? Seems it would be quicker than doing it with matrices

#1RobMaddison

Posted 20 January 2013 - 02:21 PM

Hi

When you want to show something like a health bar, a map, score or number of lives etc, I thought you might have to setup an orthographic projection, etc, but I just 'accidentally' did it by creating the graphic bounds using interpolated view projected vertices, e.g., the whole screen would be x and y -1,-1 to 1,1 respectively. In the vertex shader I just don't use a matrix to transform it and it works.

Is this how it's normally done anyway? Seems it would be quicker than doing it with matrices

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