panfrost: Add support for decoding gl_FrontFacing
Signed-off-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
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@ -788,6 +788,10 @@ struct mali_payload_set_value {
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* implemented as special attributes, denoted by MALI_ATTR_IMAGE. For images,
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* let shift=extra_flags=0. Stride is set to the image format's bytes-per-pixel
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* (*NOT the row stride*). Size is set to the size of the image itself.
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*
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* Special internal varyings (including gl_FrontFacing) are handled vai
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* MALI_ATTR_INTERNAL, which has all fields set to zero and uses a special
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* elements pseudo-pointer.
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*/
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enum mali_attr_mode {
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@ -796,9 +800,14 @@ enum mali_attr_mode {
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MALI_ATTR_POT_DIVIDE = 2,
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MALI_ATTR_MODULO = 3,
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MALI_ATTR_NPOT_DIVIDE = 4,
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MALI_ATTR_IMAGE = 5
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MALI_ATTR_IMAGE = 5,
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MALI_ATTR_INTERNAL = 6
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};
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/* Pseudo-address for gl_FrontFacing */
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#define MALI_VARYING_FRONT_FACING (0x20)
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/* This magic "pseudo-address" is used as `elements` to implement
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* gl_PointCoord. When read from a fragment shader, it generates a point
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* coordinate per the OpenGL ES 2.0 specification. Flipped coordinate spaces
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@ -382,6 +382,7 @@ static char *pandecode_attr_mode(enum mali_attr_mode mode)
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DEFINE_CASE(MODULO);
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DEFINE_CASE(NPOT_DIVIDE);
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DEFINE_CASE(IMAGE);
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DEFINE_CASE(INTERNAL);
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default:
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return "MALI_ATTR_UNUSED /* XXX: Unknown stencil op, check dump */";
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}
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