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gallivm: comments, const qualifiers

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This commit is contained in:
Brian Paul 2010-05-14 11:09:29 -06:00
parent 85c6799f6e
commit 9a0ff95425
1 changed files with 11 additions and 4 deletions
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15
src/gallium/auxiliary/gallivm/lp_bld_format_soa.c
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@ -89,6 +89,11 @@ lp_build_format_swizzle_soa(const struct util_format_description *format_desc,
* It requires that a packed pixel fits into an element of the output
* channels. The common case is when converting pixel with a depth of 32 bit or
* less into floats.
*
* \param format_desc the format of the 'packed' incoming pixel vector
* \param type the desired type for rgba_out (type.length = n, above)
* \param packed the incoming vector of packed pixels
* \param rgba_out returns the SoA R,G,B,A vectors
*/
void
lp_build_unpack_rgba_soa(LLVMBuilderRef builder,
@ -115,8 +120,8 @@ lp_build_unpack_rgba_soa(LLVMBuilderRef builder,
/* Decode the input vector components */
start = 0;
for (chan = 0; chan < format_desc->nr_channels; ++chan) {
unsigned width = format_desc->channel[chan].size;
unsigned stop = start + width;
const unsigned width = format_desc->channel[chan].size;
const unsigned stop = start + width;
LLVMValueRef input;
input = packed;
@ -247,9 +252,10 @@ lp_build_unpack_rgba_soa(LLVMBuilderRef builder,
/**
* Fetch a pixel into a SoA.
* Fetch a texels from a texture, returning them in SoA layout.
*
* \param type the desired return type for 'rgba'
* \param type the desired return type for 'rgba'. The vector length
* is the number of texels to fetch
*
* \param base_ptr points to start of the texture image block. For non-
* compressed formats, this simply points to the texel.
@ -290,6 +296,7 @@ lp_build_fetch_rgba_soa(LLVMBuilderRef builder,
/*
* gather the texels from the texture
* Ex: packed = {BGRA, BGRA, BGRA, BGRA}.
*/
packed = lp_build_gather(builder,
type.length,