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/* $XFree86: xc/lib/GL/mesa/src/drv/mga/mgaspan.c,v 1.4 2000/08/28 02:43:12 tsi Exp $ */
#include "types.h"
#include "mgadd.h"
#include "mgacontext.h"
#include "mgaspan.h"
#include "mgaioctl.h"
#define DBG 0
#define LOCAL_VARS \
__DRIdrawablePrivate *dPriv = mmesa->driDrawable; \
mgaScreenPrivate *mgaScreen = mmesa->mgaScreen; \
__DRIscreenPrivate *sPriv = mmesa->driScreen; \
GLuint pitch = mgaScreen->frontPitch; \
GLuint height = dPriv->h; \
char *read_buf = (char *)(sPriv->pFB + \
mmesa->readOffset + \
dPriv->x * mgaScreen->cpp + \
dPriv->y * pitch); \
char *buf = (char *)(sPriv->pFB + \
mmesa->drawOffset + \
dPriv->x * mgaScreen->cpp + \
dPriv->y * pitch); \
GLushort p = MGA_CONTEXT( ctx )->MonoColor; \
(void) read_buf; (void) buf; (void) p
#define LOCAL_DEPTH_VARS \
__DRIdrawablePrivate *dPriv = mmesa->driDrawable; \
mgaScreenPrivate *mgaScreen = mmesa->mgaScreen; \
__DRIscreenPrivate *sPriv = mmesa->driScreen; \
GLuint pitch = mgaScreen->frontPitch; \
GLuint height = dPriv->h; \
char *buf = (char *)(sPriv->pFB + \
mgaScreen->depthOffset + \
dPriv->x * 2 + \
dPriv->y * pitch)
#define LOCAL_STENCIL_VARS LOCAL_DEPTH_VARS
#define INIT_MONO_PIXEL(p)
#define CLIPPIXEL(_x,_y) (_x >= minx && _x < maxx && \
_y >= miny && _y < maxy)
#define CLIPSPAN(_x,_y,_n,_x1,_n1,_i) \
if (_y < miny || _y >= maxy) _n1 = 0, _x1 = x; \
else { \
_n1 = _n; \
_x1 = _x; \
if (_x1 < minx) _i += (minx - _x1), _x1 = minx; \
if (_x1 + _n1 >= maxx) n1 -= (_x1 + n1 - maxx) + 1; \
}
#define HW_LOCK() \
mgaContextPtr mmesa = MGA_CONTEXT(ctx); \
LOCK_HARDWARE_QUIESCENT(mmesa);
#define HW_CLIPLOOP() \
do { \
int _nc = mmesa->numClipRects; \
while (_nc--) { \
int minx = mmesa->pClipRects[_nc].x1 - mmesa->drawX; \
int miny = mmesa->pClipRects[_nc].y1 - mmesa->drawY; \
int maxx = mmesa->pClipRects[_nc].x2 - mmesa->drawX; \
int maxy = mmesa->pClipRects[_nc].y2 - mmesa->drawY;
#define HW_ENDCLIPLOOP() \
} \
} while (0)
#define HW_UNLOCK() \
UNLOCK_HARDWARE(mmesa);
/* 16 bit, 565 rgb color spanline and pixel functions
*/
#define Y_FLIP(_y) (height - _y - 1)
#define WRITE_RGBA( _x, _y, r, g, b, a ) \
*(GLushort *)(buf + _x*2 + _y*pitch) = ( (((int)r & 0xf8) << 8) | \
(((int)g & 0xfc) << 3) | \
(((int)b & 0xf8) >> 3))
#define WRITE_PIXEL( _x, _y, p ) \
*(GLushort *)(buf + _x*2 + _y*pitch) = p
#define READ_RGBA( rgba, _x, _y ) \
do { \
GLushort p = *(GLushort *)(read_buf + _x*2 + _y*pitch); \
rgba[0] = (p >> 8) & 0xf8; \
rgba[1] = (p >> 3) & 0xfc; \
rgba[2] = (p << 3) & 0xf8; \
rgba[3] = 255; \
} while(0)
#define TAG(x) mga##x##_565
#include "spantmp.h"
/* 32 bit, 8888 argb color spanline and pixel functions
*/
#define WRITE_RGBA(_x, _y, r, g, b, a) \
*(GLuint *)(buf + _x*4 + _y*pitch) = ((r << 16) | \
(g << 8) | \
(b << 0) | \
(a << 24) )
#define WRITE_PIXEL(_x, _y, p) \
*(GLuint *)(buf + _x*4 + _y*pitch) = p
#define READ_RGBA(rgba, _x, _y) \
do { \
GLuint p = *(GLuint *)(read_buf + _x*4 + _y*pitch); \
rgba[0] = (p >> 16) & 0xff; \
rgba[1] = (p >> 8) & 0xff; \
rgba[2] = (p >> 0) & 0xff; \
rgba[3] = (p >> 24) & 0xff; \
} while (0)
#define TAG(x) mga##x##_8888
#include "spantmp.h"
/* 16 bit depthbuffer functions.
*/
#define WRITE_DEPTH( _x, _y, d ) \
*(GLushort *)(buf + _x*2 + _y*pitch) = d;
#define READ_DEPTH( d, _x, _y ) \
d = *(GLushort *)(buf + _x*2 + _y*pitch);
#define TAG(x) mga##x##_16
#include "depthtmp.h"
/* 32 bit depthbuffer functions.
*/
#define WRITE_DEPTH( _x, _y, d ) \
*(GLuint *)(buf + _x*4 + _y*pitch) = d;
#define READ_DEPTH( d, _x, _y ) \
d = *(GLuint *)(buf + _x*4 + _y*pitch);
#define TAG(x) mga##x##_32
#include "depthtmp.h"
/* 24/8 bit interleaved depth/stencil functions
*/
#define WRITE_DEPTH( _x, _y, d ) { \
GLuint tmp = *(GLuint *)(buf + _x*4 + _y*pitch); \
tmp &= 0xff; \
tmp |= (d) & 0xffffff00; \
*(GLuint *)(buf + _x*4 + _y*pitch) = tmp; \
}
#define READ_DEPTH( d, _x, _y ) \
d = *(GLuint *)(buf + _x*4 + _y*pitch) >> 8;
#define TAG(x) mga##x##_24_8
#include "depthtmp.h"
#define WRITE_STENCIL( _x, _y, d ) { \
GLuint tmp = *(GLuint *)(buf + _x*4 + _y*pitch); \
tmp &= 0xffffff00; \
tmp |= d & 0xff; \
*(GLuint *)(buf + _x*4 + _y*pitch) = tmp; \
}
#define READ_STENCIL( d, _x, _y ) \
d = *(GLuint *)(buf + _x*4 + _y*pitch) & 0xff;
#define TAG(x) mga##x##_24_8
#include "stenciltmp.h"
void mgaDDInitSpanFuncs( GLcontext *ctx )
{
mgaContextPtr mmesa = MGA_CONTEXT(ctx);
switch (mmesa->mgaScreen->cpp) {
case 2:
ctx->Driver.WriteRGBASpan = mgaWriteRGBASpan_565;
ctx->Driver.WriteRGBSpan = mgaWriteRGBSpan_565;
ctx->Driver.WriteMonoRGBASpan = mgaWriteMonoRGBASpan_565;
ctx->Driver.WriteRGBAPixels = mgaWriteRGBAPixels_565;
ctx->Driver.WriteMonoRGBAPixels = mgaWriteMonoRGBAPixels_565;
ctx->Driver.ReadRGBASpan = mgaReadRGBASpan_565;
ctx->Driver.ReadRGBAPixels = mgaReadRGBAPixels_565;
ctx->Driver.ReadDepthSpan = mgaReadDepthSpan_16;
ctx->Driver.WriteDepthSpan = mgaWriteDepthSpan_16;
ctx->Driver.ReadDepthPixels = mgaReadDepthPixels_16;
ctx->Driver.WriteDepthPixels = mgaWriteDepthPixels_16;
break;
case 4:
ctx->Driver.WriteRGBASpan = mgaWriteRGBASpan_8888;
ctx->Driver.WriteRGBSpan = mgaWriteRGBSpan_8888;
ctx->Driver.WriteMonoRGBASpan = mgaWriteMonoRGBASpan_8888;
ctx->Driver.WriteRGBAPixels = mgaWriteRGBAPixels_8888;
ctx->Driver.WriteMonoRGBAPixels = mgaWriteMonoRGBAPixels_8888;
ctx->Driver.ReadRGBASpan = mgaReadRGBASpan_8888;
ctx->Driver.ReadRGBAPixels = mgaReadRGBAPixels_8888;
if (mmesa->hw_stencil) {
ctx->Driver.ReadDepthSpan = mgaReadDepthSpan_32;
ctx->Driver.WriteDepthSpan = mgaWriteDepthSpan_32;
ctx->Driver.ReadDepthPixels = mgaReadDepthPixels_32;
ctx->Driver.WriteDepthPixels = mgaWriteDepthPixels_32;
} else {
ctx->Driver.ReadDepthSpan = mgaReadDepthSpan_24_8;
ctx->Driver.WriteDepthSpan = mgaWriteDepthSpan_24_8;
ctx->Driver.ReadDepthPixels = mgaReadDepthPixels_24_8;
ctx->Driver.WriteDepthPixels = mgaWriteDepthPixels_24_8;
ctx->Driver.ReadStencilSpan = mgaReadStencilSpan_24_8;
ctx->Driver.WriteStencilSpan = mgaWriteStencilSpan_24_8;
ctx->Driver.ReadStencilPixels = mgaReadStencilPixels_24_8;
ctx->Driver.WriteStencilPixels = mgaWriteStencilPixels_24_8;
}
break;
}
ctx->Driver.WriteCI8Span = 0;
ctx->Driver.WriteCI32Span = 0;
ctx->Driver.WriteMonoCISpan = 0;
ctx->Driver.WriteCI32Pixels = 0;
ctx->Driver.WriteMonoCIPixels = 0;
ctx->Driver.ReadCI32Span = 0;
ctx->Driver.ReadCI32Pixels = 0;
}
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