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gallium/tgsi: add helper tgsi_get_interp_mode

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Reviewed-by: Eric Anholt <eric@anholt.net>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/6442>
This commit is contained in:
Marek Olšák 2020-08-22 06:28:52 -04:00 • committed by Marge Bot
parent 2519472845
commit 440aab95c3
3 changed files with 23 additions and 21 deletions
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17
src/gallium/auxiliary/tgsi/tgsi_from_mesa.c
View file

@ -290,3 +290,20 @@ tgsi_get_sysval_semantic(unsigned sysval)
unreachable("Unexpected system value to TGSI");
}
}
enum tgsi_interpolate_mode
tgsi_get_interp_mode(enum glsl_interp_mode mode, bool color)
{
switch (mode) {
case INTERP_MODE_NONE:
return color ? TGSI_INTERPOLATE_COLOR : TGSI_INTERPOLATE_PERSPECTIVE;
case INTERP_MODE_FLAT:
return TGSI_INTERPOLATE_CONSTANT;
case INTERP_MODE_NOPERSPECTIVE:
return TGSI_INTERPOLATE_LINEAR;
case INTERP_MODE_SMOOTH:
return TGSI_INTERPOLATE_PERSPECTIVE;
default:
unreachable("unknown interpolation mode");
}
}

3
src/gallium/auxiliary/tgsi/tgsi_from_mesa.h
View file

@ -55,6 +55,9 @@ tgsi_get_gl_frag_result_semantic(gl_frag_result frag_result,
enum tgsi_semantic
tgsi_get_sysval_semantic(unsigned sysval);
enum tgsi_interpolate_mode
tgsi_get_interp_mode(enum glsl_interp_mode mode, bool color);
static inline enum pipe_shader_type
pipe_shader_type_from_mesa(gl_shader_stage stage)
{

24
src/mesa/state_tracker/st_glsl_to_tgsi.cpp
View file

@ -6554,26 +6554,6 @@ sort_inout_decls_by_slot(struct inout_decl *decls,
std::sort(decls, decls + count, sorter);
}
static enum tgsi_interpolate_mode
st_translate_interp(enum glsl_interp_mode glsl_qual, GLuint varying)
{
switch (glsl_qual) {
case INTERP_MODE_NONE:
if (varying == VARYING_SLOT_COL0 || varying == VARYING_SLOT_COL1)
return TGSI_INTERPOLATE_COLOR;
return TGSI_INTERPOLATE_PERSPECTIVE;
case INTERP_MODE_SMOOTH:
return TGSI_INTERPOLATE_PERSPECTIVE;
case INTERP_MODE_FLAT:
return TGSI_INTERPOLATE_CONSTANT;
case INTERP_MODE_NOPERSPECTIVE:
return TGSI_INTERPOLATE_LINEAR;
default:
assert(0 && "unexpected interp mode in st_translate_interp()");
return TGSI_INTERPOLATE_PERSPECTIVE;
}
}
/**
* Translate intermediate IR (glsl_to_tgsi_instruction) to TGSI format.
* \param program the program to translate
@ -6682,7 +6662,9 @@ st_translate_program(
assert(interpMode);
interp_mode = interpMode[slot] != TGSI_INTERPOLATE_COUNT ?
(enum tgsi_interpolate_mode) interpMode[slot] :
st_translate_interp(decl->interp, inputSlotToAttr[slot]);
tgsi_get_interp_mode(decl->interp,
inputSlotToAttr[slot] == VARYING_SLOT_COL0 ||
inputSlotToAttr[slot] == VARYING_SLOT_COL1);
interp_location = (enum tgsi_interpolate_loc) decl->interp_loc;
}