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bugix from raul for fxddbitmap

This commit is contained in:
Keith Whitwell 1999-09-11 16:01:26 +00:00
parent 84ffacb978
commit 6fd3b96822
1 changed files with 29 additions and 8 deletions
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37
src/mesa/drivers/glide/fxdd.c
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@ -203,6 +203,7 @@ static GLboolean fxDDSetBuffer(GLcontext *ctx, GLenum mode )
}
static GLboolean fxDDDrawBitMap(GLcontext *ctx, GLint px, GLint py,
GLsizei width, GLsizei height,
const struct gl_pixelstore_attrib *unpack,
@ -212,7 +213,7 @@ static GLboolean fxDDDrawBitMap(GLcontext *ctx, GLint px, GLint py,
FxU16 *p;
GrLfbInfo_t info;
const GLubyte *pb;
int x,y;
int x,y,xmin,xmax,ymin,ymax;
GLint r,g,b,a,scrwidth,scrheight,stride;
FxU16 color;
@ -227,13 +228,26 @@ static GLboolean fxDDDrawBitMap(GLcontext *ctx, GLint px, GLint py,
(unpack->LsbFirst))
return GL_FALSE;
#define ISCLIPPED(rx) ( ((rx)<0) || ((rx)>=scrwidth) )
#define DRAWBIT(i) { \
if(!ISCLIPPED(x+px)) \
if (ctx->Scissor.Enabled) {
xmin=ctx->Scissor.X;
xmax=ctx->Scissor.X+ctx->Scissor.Width;
ymin=ctx->Scissor.Y;
ymax=ctx->Scissor.Y+ctx->Scissor.Height;
} else {
xmin=0;
xmax=fxMesa->width;
ymin=0;
ymax=fxMesa->height;
}
#define ISCLIPPED(rx) ( ((rx)<xmin) || ((rx)>=xmax) )
#define DRAWBIT(i) { \
if(!ISCLIPPED(x+px)) \
if( (*pb) & (1<<(i)) ) \
(*p)=color; \
(*p)=color; \
p++; \
x++; \
x++; \
if(x>=width) { \
pb++; \
break; \
@ -283,8 +297,15 @@ static GLboolean fxDDDrawBitMap(GLcontext *ctx, GLint px, GLint py,
/* This code is a bit slow... */
for(y=0;y<height;y++) {
p=((FxU16 *)info.lfbPtr)+px+((scrheight-(y+py))*stride);
for(y=py;y<(py+height);y++) {
if (y>=ymax)
break;
if (y<=ymin)
continue;
p=((FxU16 *)info.lfbPtr)+px+((scrheight-y)*stride);
for(x=0;;) {
DRAWBIT(7); DRAWBIT(6); DRAWBIT(5); DRAWBIT(4);