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From Bug #36: There are a couple of issues with the selection of Altivec alpha-blitting routines in CalculateAlphaBlit() in src/video/SDL_Blit_A.c. 1) There's no check for the presence of Altivec when checking if the Blit32to565PixelAlphaAltivec() routine can be selected. 2) Altivec cannot be used in video memory, and there's no check if the destination surface is a hardware surface. (Alpha-blitting to a hardware surface with GPU support is a bad idea, but somebody's bound to do it anyway.) Patch to fix these attached.
author Ryan C. Gordon <icculus@icculus.org>
date Sun, 08 Jan 2006 21:18:15 +0000
parents 355632dca928
children
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<HTML
><HEAD
><TITLE
>Examples</TITLE
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><DIV
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>Chapter 4. Examples</H1
><DIV
CLASS="TOC"
><DL
><DT
><B
>Table of Contents</B
></DT
><DT
><A
HREF="guideexamples.html#AEN369"
>Introduction</A
></DT
><DT
><A
HREF="guideeventexamples.html"
>Event Examples</A
></DT
><DT
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>Audio Examples</A
></DT
><DT
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>CDROM Examples</A
></DT
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>Time Examples</A
></DT
></DL
></DIV
><DIV
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><H1
CLASS="SECT1"
><A
NAME="AEN369"
></A
>Introduction</H1
><P
>For the moment these examples are taken directly from the old SDL documentation. By the 1.2 release these examples should hopefully deal with most common SDL programming problems.</P
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