-/* $Id: s_alphabuf.c,v 1.15 2002/10/24 23:57:24 brianp Exp $ */
-
/*
* Mesa 3-D graphics library
- * Version: 4.1
+ * Version: 6.1
*
- * Copyright (C) 1999-2002 Brian Paul All Rights Reserved.
+ * Copyright (C) 1999-2004 Brian Paul All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
#include "glheader.h"
+#include "colormac.h"
#include "context.h"
#include "imports.h"
* Allocate a new front and back alpha buffer.
*/
void
-_mesa_alloc_alpha_buffers( GLframebuffer *buffer )
+_swrast_alloc_alpha_buffers( GLframebuffer *buffer )
{
const GLint bytes = buffer->Width * buffer->Height * sizeof(GLchan);
if (buffer->FrontLeftAlpha) {
MESA_PBUFFER_FREE( buffer->FrontLeftAlpha );
}
- buffer->FrontLeftAlpha = MESA_PBUFFER_ALLOC( bytes );
+ buffer->FrontLeftAlpha = (GLchan *) MESA_PBUFFER_ALLOC( bytes );
if (!buffer->FrontLeftAlpha) {
/* out of memory */
_mesa_error( NULL, GL_OUT_OF_MEMORY,
if (buffer->BackLeftAlpha) {
MESA_PBUFFER_FREE( buffer->BackLeftAlpha );
}
- buffer->BackLeftAlpha = MESA_PBUFFER_ALLOC( bytes );
+ buffer->BackLeftAlpha = (GLchan *) MESA_PBUFFER_ALLOC( bytes );
if (!buffer->BackLeftAlpha) {
/* out of memory */
_mesa_error( NULL, GL_OUT_OF_MEMORY,
if (buffer->FrontRightAlpha) {
MESA_PBUFFER_FREE( buffer->FrontRightAlpha );
}
- buffer->FrontRightAlpha = MESA_PBUFFER_ALLOC( bytes );
+ buffer->FrontRightAlpha = (GLchan *) MESA_PBUFFER_ALLOC( bytes );
if (!buffer->FrontRightAlpha) {
/* out of memory */
_mesa_error( NULL, GL_OUT_OF_MEMORY,
if (buffer->BackRightAlpha) {
MESA_PBUFFER_FREE( buffer->BackRightAlpha );
}
- buffer->BackRightAlpha = MESA_PBUFFER_ALLOC( bytes );
+ buffer->BackRightAlpha = (GLchan *) MESA_PBUFFER_ALLOC( bytes );
if (!buffer->BackRightAlpha) {
/* out of memory */
_mesa_error( NULL, GL_OUT_OF_MEMORY,
* Clear all the alpha buffers
*/
void
-_mesa_clear_alpha_buffers( GLcontext *ctx )
+_swrast_clear_alpha_buffers( GLcontext *ctx )
{
- const GLchan aclear = (GLchan) ctx->Color.ClearColor[3];
+ GLchan aclear;
GLuint bufferBit;
+ CLAMPED_FLOAT_TO_CHAN(aclear, ctx->Color.ClearColor[3]);
+
ASSERT(ctx->DrawBuffer->UseSoftwareAlphaBuffers);
ASSERT(ctx->Color.ColorMask[ACOMP]);
if (bufferBit & ctx->Color._DrawDestMask) {
GLchan *buffer;
if (bufferBit == FRONT_LEFT_BIT) {
- buffer = (GLchan *) ctx->DrawBuffer->FrontLeftAlpha;
+ buffer = ctx->DrawBuffer->FrontLeftAlpha;
}
else if (bufferBit == FRONT_RIGHT_BIT) {
- buffer = (GLchan *) ctx->DrawBuffer->FrontRightAlpha;
+ buffer = ctx->DrawBuffer->FrontRightAlpha;
}
else if (bufferBit == BACK_LEFT_BIT) {
- buffer = (GLchan *) ctx->DrawBuffer->BackLeftAlpha;
+ buffer = ctx->DrawBuffer->BackLeftAlpha;
}
else {
- buffer = (GLchan *) ctx->DrawBuffer->BackRightAlpha;
+ buffer = ctx->DrawBuffer->BackRightAlpha;
}
if (ctx->Scissor.Enabled) {
switch (swrast->CurrentBuffer) {
case FRONT_LEFT_BIT:
- return (GLchan *) ctx->DrawBuffer->FrontLeftAlpha;
+ return ctx->DrawBuffer->FrontLeftAlpha;
break;
case BACK_LEFT_BIT:
- return (GLchan *) ctx->DrawBuffer->BackLeftAlpha;
+ return ctx->DrawBuffer->BackLeftAlpha;
break;
case FRONT_RIGHT_BIT:
- return (GLchan *) ctx->DrawBuffer->FrontRightAlpha;
+ return ctx->DrawBuffer->FrontRightAlpha;
break;
case BACK_RIGHT_BIT:
- return (GLchan *) ctx->DrawBuffer->BackRightAlpha;
+ return ctx->DrawBuffer->BackRightAlpha;
break;
default:
_mesa_problem(ctx, "Bad CurrentBuffer in get_alpha_buffer()");
void
-_mesa_write_alpha_span( GLcontext *ctx, GLuint n, GLint x, GLint y,
+_swrast_write_alpha_span( GLcontext *ctx, GLuint n, GLint x, GLint y,
CONST GLchan rgba[][4], const GLubyte mask[] )
{
GLchan *buffer, *aptr;
void
-_mesa_write_mono_alpha_span( GLcontext *ctx, GLuint n, GLint x, GLint y,
+_swrast_write_mono_alpha_span( GLcontext *ctx, GLuint n, GLint x, GLint y,
GLchan alpha, const GLubyte mask[] )
{
GLchan *buffer, *aptr;
void
-_mesa_write_alpha_pixels( GLcontext *ctx,
+_swrast_write_alpha_pixels( GLcontext *ctx,
GLuint n, const GLint x[], const GLint y[],
CONST GLchan rgba[][4], const GLubyte mask[] )
{
void
-_mesa_write_mono_alpha_pixels( GLcontext *ctx,
+_swrast_write_mono_alpha_pixels( GLcontext *ctx,
GLuint n, const GLint x[], const GLint y[],
GLchan alpha, const GLubyte mask[] )
{
void
-_mesa_read_alpha_span( GLcontext *ctx,
+_swrast_read_alpha_span( GLcontext *ctx,
GLuint n, GLint x, GLint y, GLchan rgba[][4] )
{
const GLchan *buffer, *aptr;
void
-_mesa_read_alpha_pixels( GLcontext *ctx,
+_swrast_read_alpha_pixels( GLcontext *ctx,
GLuint n, const GLint x[], const GLint y[],
GLchan rgba[][4], const GLubyte mask[] )
{