AlexIndustrial/mesa
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

nir/spirv/glsl450: Implement Asin and Acos.

Browse Source
This commit is contained in:
Kenneth Graunke
2016-01-19 12:15:36 -08:00
parent 5e57a87dcf
commit bc9d9bc2e3
1 changed files with 27 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files
src/glsl/nir/spirv/vtn_glsl450.c
+27
View File
@@ -28,6 +28,10 @@
#include "vtn_private.h"
#include "GLSL.std.450.h"
#define M_PIf ((float) M_PI)
#define M_PI_2f ((float) M_PI_2)
#define M_PI_4f ((float) M_PI_4)
static nir_ssa_def *
build_mat2_det(nir_builder *b, nir_ssa_def *col[2])
{
@@ -201,6 +205,22 @@ build_log(nir_builder *b, nir_ssa_def *x)
return nir_fmul(b, nir_flog2(b, x), nir_imm_float(b, 1.0 / M_LOG2E));
}
static nir_ssa_def *
build_asin(nir_builder *b, nir_ssa_def *x)
{
nir_ssa_def *abs_x = nir_fabs(b, x);
return nir_fmul(b, nir_fsign(b, x),
nir_fsub(b, nir_imm_float(b, M_PI_2f),
nir_fmul(b, nir_fsqrt(b, nir_fsub(b, nir_imm_float(b, 1.0f), abs_x)),
nir_fadd(b, nir_imm_float(b, M_PI_2f),
nir_fmul(b, abs_x,
nir_fadd(b, nir_imm_float(b, M_PI_4f - 1.0f),
nir_fmul(b, abs_x,
nir_fadd(b, nir_imm_float(b, 0.086566724f),
nir_fmul(b, abs_x,
nir_imm_float(b, -0.03102955f))))))))));
}
static void
handle_glsl450_alu(struct vtn_builder *b, enum GLSLstd450 entrypoint,
const uint32_t *w, unsigned count)
@@ -417,7 +437,14 @@ handle_glsl450_alu(struct vtn_builder *b, enum GLSLstd450 entrypoint,
case GLSLstd450FindUMsb: op = nir_op_ufind_msb; break;
case GLSLstd450Asin:
val->ssa->def = build_asin(nb, src[0]);
return;
case GLSLstd450Acos:
val->ssa->def = nir_fsub(nb, nir_imm_float(nb, M_PI_2f),
build_asin(nb, src[0]));
return;
case GLSLstd450Atan:
case GLSLstd450Atan2:
case GLSLstd450ModfStruct: