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panfrost: Add support for decoding gl_FrontFacing 

Signed-off-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
This commit is contained in:
Alyssa Rosenzweig 2019-07-31 11:56:55 -07:00
parent 9e66ff3ea9
commit f3e15122d4
2 changed files with 11 additions and 1 deletions
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11
src/panfrost/include/panfrost-job.h
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@ -788,6 +788,10 @@ struct mali_payload_set_value {
* implemented as special attributes, denoted by MALI_ATTR_IMAGE. For images,
* let shift=extra_flags=0. Stride is set to the image format's bytes-per-pixel
* (*NOT the row stride*). Size is set to the size of the image itself.
*
* Special internal varyings (including gl_FrontFacing) are handled vai
* MALI_ATTR_INTERNAL, which has all fields set to zero and uses a special
* elements pseudo-pointer.
*/
enum mali_attr_mode {
@ -796,9 +800,14 @@ enum mali_attr_mode {
MALI_ATTR_POT_DIVIDE = 2,
MALI_ATTR_MODULO = 3,
MALI_ATTR_NPOT_DIVIDE = 4,
MALI_ATTR_IMAGE = 5
MALI_ATTR_IMAGE = 5,
MALI_ATTR_INTERNAL = 6
};
/* Pseudo-address for gl_FrontFacing */
#define MALI_VARYING_FRONT_FACING (0x20)
/* This magic "pseudo-address" is used as `elements` to implement
* gl_PointCoord. When read from a fragment shader, it generates a point
* coordinate per the OpenGL ES 2.0 specification. Flipped coordinate spaces

1
src/panfrost/pandecode/decode.c
View File

@ -382,6 +382,7 @@ static char *pandecode_attr_mode(enum mali_attr_mode mode)
DEFINE_CASE(MODULO);
DEFINE_CASE(NPOT_DIVIDE);
DEFINE_CASE(IMAGE);
DEFINE_CASE(INTERNAL);
default:
return "MALI_ATTR_UNUSED /* XXX: Unknown stencil op, check dump */";
}