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authorIago Toral Quiroga <[email protected]>2019-07-31 09:47:08 +0200
committerIago Toral Quiroga <[email protected]>2019-08-13 09:44:12 +0200
commit48f5c34301e9f03a18b928251180c82b8c7571d1 (patch)
tree4f2b2381711609d9207e509765ca8b9def83ebe2 /src/amd
parent62e0ca3064ba2500f97025599d5ca7210cb4dc04 (diff)
nir: add a pass to clamp gl_PointSize to a range
The OpenGL and OpenGL ES specs require that implementations clamp the value of gl_PointSize to an implementation-depedent range. This pass is useful for any GPU hardware that doesn't do this automatically for either one or both sides of the range, such as V3D. v2: - Turn into a generic NIR pass (Eric). - Make the pass work before lower I/O so we can use the deref variable to inspect if we are writing to gl_PointSize (Eric). - Make the pass take the range to clamp as parameter and allow it to clamp to both sides of the range or just one side. - Make the pass report progress. v3: - Fix copyright header (Eric) - use fmin/fmax instead of bcsel to clamp (Eric) Reviewed-by: Eric Anholt <[email protected]>
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