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Added source color and alpha modulation support.

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Added perl script to generate optimized render copy functions.

--HG--
extra : convert_revision : svn%3Ac70aab31-4412-0410-b14c-859654838e24/trunk%402032
This commit is contained in:
Sam Lantinga 2006-08-28 03:17:39 +00:00
parent aebbf8cb6e
commit fdafca64b3
25 changed files with 6938 additions and 288 deletions
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20
src/audio/SDL_mixer.c
View file

@ -263,8 +263,8 @@ SDL_MixAudioFormat(Uint8 * dst, const Uint8 * src, SDL_AudioFormat format,
Uint32 *dst32 = (Uint32 *) dst;
Sint32 src1, src2;
Sint64 dst_sample;
const Sint64 max_audioval = ((((Sint64)1) << (32 - 1)) - 1);
const Sint64 min_audioval = -(((Sint64)1) << (32 - 1));
const Sint64 max_audioval = ((((Sint64) 1) << (32 - 1)) - 1);
const Sint64 min_audioval = -(((Sint64) 1) << (32 - 1));
len /= 4;
while (len--) {
@ -289,8 +289,8 @@ SDL_MixAudioFormat(Uint8 * dst, const Uint8 * src, SDL_AudioFormat format,
Uint32 *dst32 = (Uint32 *) dst;
Sint32 src1, src2;
Sint64 dst_sample;
const Sint64 max_audioval = ((((Sint64)1) << (32 - 1)) - 1);
const Sint64 min_audioval = -(((Sint64)1) << (32 - 1));
const Sint64 max_audioval = ((((Sint64) 1) << (32 - 1)) - 1);
const Sint64 min_audioval = -(((Sint64) 1) << (32 - 1));
len /= 4;
while (len--) {
@ -322,7 +322,11 @@ SDL_MixAudioFormat(Uint8 * dst, const Uint8 * src, SDL_AudioFormat format,
const double min_audioval = -3.40282347e+38F;
/* !!! FIXME: this is a little nasty. */
union { float f; Uint32 ui32; } cvt;
union
{
float f;
Uint32 ui32;
} cvt;
len /= 4;
while (len--) {
@ -360,7 +364,11 @@ SDL_MixAudioFormat(Uint8 * dst, const Uint8 * src, SDL_AudioFormat format,
const double min_audioval = -3.40282347e+38F;
/* !!! FIXME: this is a little nasty. */
union { float f; Uint32 ui32; } cvt;
union
{
float f;
Uint32 ui32;
} cvt;
len /= 4;
while (len--) {