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struct sw_span is again allocated on the stack, but the arrays of span

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data are broken out into a new struct span_arrays which is allocated
per-context (to avoid huge stack allocations - a problem on Windows).
This lets us use span.redStep instead of span->redStep (for example) to
hopefully get slightly better performance in the triangle functions.
This commit is contained in:
Brian Paul
2002-08-07 00:45:07 +00:00
parent 2353e96c32
commit 77df88727c
25 changed files with 1252 additions and 1157 deletions
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32
src/mesa/drivers/osmesa/osmesa.c
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@@ -1,4 +1,4 @@
/* $Id: osmesa.c,v 1.86 2002/07/09 01:22:51 brianp Exp $ */
/* $Id: osmesa.c,v 1.87 2002/08/07 00:45:07 brianp Exp $ */
/*
* Mesa 3-D graphics library
@@ -1886,20 +1886,20 @@ static void smooth_rgba_z_triangle( GLcontext *ctx,
#define INTERP_ALPHA 1
#define RENDER_SPAN( span ) \
GLuint i; \
GLchan *img = PIXELADDR4(span->x, span->y); \
for (i = 0; i < span->end; i++, img += 4) { \
const GLdepth z = FixedToDepth(span->z); \
GLchan *img = PIXELADDR4(span.x, span.y); \
for (i = 0; i < span.end; i++, img += 4) { \
const GLdepth z = FixedToDepth(span.z); \
if (z < zRow[i]) { \
PACK_RGBA(img, FixedToChan(span->red), \
FixedToChan(span->green), FixedToChan(span->blue), \
FixedToChan(span->alpha)); \
PACK_RGBA(img, FixedToChan(span.red), \
FixedToChan(span.green), FixedToChan(span.blue), \
FixedToChan(span.alpha)); \
zRow[i] = z; \
} \
span->red += span->redStep; \
span->green += span->greenStep; \
span->blue += span->blueStep; \
span->alpha += span->alphaStep; \
span->z += span->zStep; \
span.red += span.redStep; \
span.green += span.greenStep; \
span.blue += span.blueStep; \
span.alpha += span.alphaStep; \
span.z += span.zStep; \
}
#ifdef WIN32
@@ -1930,14 +1930,14 @@ static void flat_rgba_z_triangle( GLcontext *ctx,
#define RENDER_SPAN( span ) \
GLuint i; \
GLuint *img = (GLuint *) PIXELADDR4(span->x, span->y); \
for (i = 0; i < span->end; i++) { \
const GLdepth z = FixedToDepth(span->z); \
GLuint *img = (GLuint *) PIXELADDR4(span.x, span.y); \
for (i = 0; i < span.end; i++) { \
const GLdepth z = FixedToDepth(span.z); \
if (z < zRow[i]) { \
img[i] = pixel; \
zRow[i] = z; \
} \
span->z += span->zStep; \
span.z += span.zStep; \
}
#ifdef WIN32