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optimized color buffer clear fallback (use mono-color span functions

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This commit is contained in:
Brian Paul 2002-11-13 16:46:19 +00:00
parent 9d88c7d8f4
commit 4d7a1289ed
1 changed files with 11 additions and 28 deletions
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39
src/mesa/swrast/s_buffers.c
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@ -1,8 +1,8 @@
/* $Id: s_buffers.c,v 1.15 2002/10/24 23:57:24 brianp Exp $ */
/* $Id: s_buffers.c,v 1.16 2002/11/13 16:46:19 brianp Exp $ */
/*
* Mesa 3-D graphics library
* Version: 4.1
* Version: 5.1
*
* Copyright (C) 1999-2002 Brian Paul All Rights Reserved.
*
@ -68,7 +68,7 @@ clear_color_buffer_with_masking( GLcontext *ctx )
}
_mesa_mask_rgba_array( ctx, width, x, y + i, rgba );
(*swrast->Driver.WriteRGBASpan)( ctx, width, x, y + i,
(CONST GLchan (*)[4]) rgba, NULL );
(CONST GLchan (*)[4]) rgba, NULL );
}
}
else {
@ -104,7 +104,6 @@ clear_color_buffer(GLcontext *ctx)
if (ctx->Visual.rgbMode) {
/* RGBA mode */
GLchan clearColor[4];
GLchan span[MAX_WIDTH][4];
GLint i;
CLAMPED_FLOAT_TO_CHAN(clearColor[RCOMP], ctx->Color.ClearColor[0]);
@ -113,38 +112,22 @@ clear_color_buffer(GLcontext *ctx)
CLAMPED_FLOAT_TO_CHAN(clearColor[ACOMP], ctx->Color.ClearColor[3]);
ASSERT(*((GLuint *) &ctx->Color.ColorMask) == 0xffffffff);
ASSERT(swrast->Driver.WriteRGBASpan);
for (i = 0; i < width; i++) {
COPY_CHAN4(span[i], clearColor);
}
for (i = 0; i < height; i++) {
(*swrast->Driver.WriteRGBASpan)( ctx, width, x, y + i,
(CONST GLchan (*)[4]) span, NULL );
(*swrast->Driver.WriteMonoRGBASpan)( ctx, width, x, y + i,
clearColor, NULL );
}
}
else {
/* Color index mode */
GLint i;
ASSERT((ctx->Color.IndexMask & ((1 << ctx->Visual.indexBits) - 1))
== (GLuint) ((1 << ctx->Visual.indexBits) - 1));
if (ctx->Visual.indexBits == 8) {
/* 8-bit clear */
GLubyte span[MAX_WIDTH];
GLint i;
MEMSET(span, ctx->Color.ClearIndex, width);
for (i = 0; i < height; i++) {
(*swrast->Driver.WriteCI8Span)( ctx, width, x, y + i, span, NULL );
}
}
else {
/* non 8-bit clear */
GLuint span[MAX_WIDTH];
GLint i;
for (i = 0; i < width; i++) {
span[i] = ctx->Color.ClearIndex;
}
for (i = 0; i < height; i++) {
(*swrast->Driver.WriteCI32Span)( ctx, width, x, y + i, span, NULL );
}
ASSERT(swrast->Driver.WriteMonoCISpan);
for (i = 0; i < height; i++) {
(*swrast->Driver.WriteMonoCISpan)( ctx, width, x, y + i,
ctx->Color.ClearIndex, NULL);
}
}
}