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llvmpipe: basic comments

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This commit is contained in:
Brian Paul
2009-08-19 13:13:49 -06:00
committed by José Fonseca
parent b9f2f01315
commit f586d9546b
1 changed files with 62 additions and 0 deletions
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src/gallium/drivers/llvmpipe/lp_bld_arit.c
+62
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@@ -55,6 +55,10 @@
#include "lp_bld_arit.h"
/**
* Generate min(a, b)
* No checks for special case values of a or b = 1 or 0 are done.
*/
static LLVMValueRef
lp_build_min_simple(struct lp_build_context *bld,
LLVMValueRef a,
@@ -102,6 +106,10 @@ lp_build_min_simple(struct lp_build_context *bld,
}
/**
* Generate max(a, b)
* No checks for special case values of a or b = 1 or 0 are done.
*/
static LLVMValueRef
lp_build_max_simple(struct lp_build_context *bld,
LLVMValueRef a,
@@ -149,6 +157,9 @@ lp_build_max_simple(struct lp_build_context *bld,
}
/**
* Generate 1 - a, or ~a depending on bld->type.
*/
LLVMValueRef
lp_build_comp(struct lp_build_context *bld,
LLVMValueRef a)
@@ -174,6 +185,9 @@ lp_build_comp(struct lp_build_context *bld,
}
/**
* Generate a + b
*/
LLVMValueRef
lp_build_add(struct lp_build_context *bld,
LLVMValueRef a,
@@ -214,13 +228,19 @@ lp_build_add(struct lp_build_context *bld,
else
res = LLVMBuildAdd(bld->builder, a, b, "");
/* clamp to ceiling of 1.0 */
if(bld->type.norm && (bld->type.floating || bld->type.fixed))
res = lp_build_min_simple(bld, res, bld->one);
/* XXX clamp to floor of -1 or 0??? */
return res;
}
/**
* Generate a - b
*/
LLVMValueRef
lp_build_sub(struct lp_build_context *bld,
LLVMValueRef a,
@@ -289,6 +309,9 @@ lp_build_unpack_shuffle(unsigned n, unsigned lo_hi)
}
/**
* Build constant int vector of width 'n' and value 'c'.
*/
static LLVMValueRef
lp_build_const_vec(LLVMTypeRef type, unsigned n, long long c)
{
@@ -379,6 +402,9 @@ lp_build_mul_u8n(LLVMBuilderRef builder,
}
/**
* Generate a * b
*/
LLVMValueRef
lp_build_mul(struct lp_build_context *bld,
LLVMValueRef a,
@@ -448,6 +474,9 @@ lp_build_mul(struct lp_build_context *bld,
}
/**
* Generate a / b
*/
LLVMValueRef
lp_build_div(struct lp_build_context *bld,
LLVMValueRef a,
@@ -478,6 +507,10 @@ lp_build_div(struct lp_build_context *bld,
}
/**
* Generate min(a, b)
* Do checks for special cases.
*/
LLVMValueRef
lp_build_min(struct lp_build_context *bld,
LLVMValueRef a,
@@ -502,6 +535,10 @@ lp_build_min(struct lp_build_context *bld,
}
/**
* Generate max(a, b)
* Do checks for special cases.
*/
LLVMValueRef
lp_build_max(struct lp_build_context *bld,
LLVMValueRef a,
@@ -526,6 +563,9 @@ lp_build_max(struct lp_build_context *bld,
}
/**
* Generate abs(a)
*/
LLVMValueRef
lp_build_abs(struct lp_build_context *bld,
LLVMValueRef a)
@@ -598,6 +638,9 @@ lp_build_rcp(struct lp_build_context *bld,
}
/**
* Generate 1/sqrt(a)
*/
LLVMValueRef
lp_build_rsqrt(struct lp_build_context *bld,
LLVMValueRef a)
@@ -616,6 +659,9 @@ lp_build_rsqrt(struct lp_build_context *bld,
}
/**
* Generate cos(a)
*/
LLVMValueRef
lp_build_cos(struct lp_build_context *bld,
LLVMValueRef a)
@@ -633,6 +679,9 @@ lp_build_cos(struct lp_build_context *bld,
}
/**
* Generate sin(a)
*/
LLVMValueRef
lp_build_sin(struct lp_build_context *bld,
LLVMValueRef a)
@@ -650,6 +699,9 @@ lp_build_sin(struct lp_build_context *bld,
}
/**
* Generate pow(x, y)
*/
LLVMValueRef
lp_build_pow(struct lp_build_context *bld,
LLVMValueRef x,
@@ -663,6 +715,9 @@ lp_build_pow(struct lp_build_context *bld,
}
/**
* Generate exp(x)
*/
LLVMValueRef
lp_build_exp(struct lp_build_context *bld,
LLVMValueRef x)
@@ -674,6 +729,9 @@ lp_build_exp(struct lp_build_context *bld,
}
/**
* Generate log(x)
*/
LLVMValueRef
lp_build_log(struct lp_build_context *bld,
LLVMValueRef x)
@@ -689,6 +747,10 @@ lp_build_log(struct lp_build_context *bld,
#define LOG_POLY_DEGREE 5
/**
* Generate polynomial.
* Ex: x^2 * coeffs[0] + x * coeffs[1] + coeffs[2].
*/
static LLVMValueRef
lp_build_polynomial(struct lp_build_context *bld,
LLVMValueRef x,