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new depth buffer functions

This commit is contained in:
Brian Paul 1999-12-10 19:13:42 +00:00
parent 4c7fd2cfce
commit 1478647932
3 changed files with 64 additions and 453 deletions
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9
src/mesa/drivers/glide/fxdd.c
View File

@ -811,11 +811,10 @@ void fxSetupDDPointers(GLcontext *ctx)
ctx->Driver.UpdateState=fxDDUpdateDDPointers;
ctx->Driver.AllocDepthBuffer=fxAllocDepthBuffer;
ctx->Driver.DepthTestSpan=fxDDDepthTestSpanGeneric;
ctx->Driver.DepthTestPixels=fxDDDepthTestPixelsGeneric;
ctx->Driver.ReadDepthSpanFloat=fxDDReadDepthSpanFloat;
ctx->Driver.ReadDepthSpanInt=fxDDReadDepthSpanInt;
ctx->Driver.WriteDepthSpan=fxDDWriteDepthSpan;
ctx->Driver.WriteDepthPixels=fxDDWriteDepthPixels;
ctx->Driver.ReadDepthSpan=fxDDReadDepthSpan;
ctx->Driver.ReadDepthPixels=fxDDReadDepthPixels;
ctx->Driver.GetString=fxDDGetString;

485
src/mesa/drivers/glide/fxddspan.c
View File

@ -122,11 +122,6 @@ void LFB_WRITE_SPAN_MESA(GrBuffer_t dst_buffer,
#if defined(FX_GLIDE3) && defined(XF86DRI)
static FxBool writeRegionClipped(fxMesaContext fxMesa, GrBuffer_t dst_buffer,
FxU32 dst_x, FxU32 dst_y, GrLfbSrcFmt_t src_format,
FxU32 src_width, FxU32 src_height, FxI32 src_stride,
void *src_data);
FxBool writeRegionClipped(fxMesaContext fxMesa, GrBuffer_t dst_buffer,
FxU32 dst_x, FxU32 dst_y, GrLfbSrcFmt_t src_format,
FxU32 src_width, FxU32 src_height, FxI32 src_stride,
@ -388,7 +383,7 @@ static void fxDDReadRGBAPixels(const GLcontext *ctx,
{
fxMesaContext fxMesa=(fxMesaContext)ctx->DriverCtx;
GLuint i;
GLint bottom=fxMesa->height+fxMesa->y_offset-1;
GLint bottom=fxMesa->y_delta-1;
if (MESA_VERBOSE&VERBOSE_DRIVER) {
fprintf(stderr,"fxmesa: fxDDReadRGBAPixels(...)\n");
@ -411,30 +406,37 @@ static void fxDDReadRGBAPixels(const GLcontext *ctx,
/***** Depth functions *****/
/************************************************************************/
void fxDDReadDepthSpanFloat(GLcontext *ctx,
GLuint n, GLint x, GLint y, GLfloat depth[])
void fxDDWriteDepthSpan(GLcontext *ctx,
GLuint n, GLint x, GLint y, const GLdepth depth[],
const GLubyte mask[])
{
fxMesaContext fxMesa=(fxMesaContext)ctx->DriverCtx;
GLuint i;
GLint bottom=fxMesa->height+fxMesa->y_offset-1;
GLushort data[MAX_WIDTH];
if (MESA_VERBOSE&VERBOSE_DRIVER) {
fprintf(stderr,"fxmesa: fxDDReadDepthSpanFloat(...)\n");
fprintf(stderr,"fxmesa: fxDDReadDepthSpanInt(...)\n");
}
x+=fxMesa->x_offset;
FX_grLfbReadRegion(GR_BUFFER_AUXBUFFER,x,bottom-y,n,1,0,data);
x += fxMesa->x_offset;
/*
convert the read values to float values [0.0 .. 1.0].
*/
for(i=0;i<n;i++)
depth[i]=data[i]/65535.0f;
if (mask) {
GLint i;
for (i = 0; i < n; i++) {
if (mask[i]) {
writeRegionClipped(fxMesa, GR_BUFFER_AUXBUFFER, x + i, bottom-y,
GR_LFB_SRC_FMT_ZA16, 1, 1, 0, (void *) &depth[i]);
}
}
}
else {
writeRegionClipped(fxMesa, GR_BUFFER_AUXBUFFER, x, bottom-y,
GR_LFB_SRC_FMT_ZA16, n, 1, 0, (void *) depth);
}
}
void fxDDReadDepthSpanInt(GLcontext *ctx,
GLuint n, GLint x, GLint y, GLdepth depth[])
void fxDDReadDepthSpan(GLcontext *ctx,
GLuint n, GLint x, GLint y, GLdepth depth[])
{
fxMesaContext fxMesa=(fxMesaContext)ctx->DriverCtx;
GLint bottom=fxMesa->height+fxMesa->y_offset-1;
@ -447,440 +449,53 @@ void fxDDReadDepthSpanInt(GLcontext *ctx,
FX_grLfbReadRegion(GR_BUFFER_AUXBUFFER,x,bottom-y,n,1,0,depth);
}
GLuint fxDDDepthTestSpanGeneric(GLcontext *ctx,
GLuint n, GLint x, GLint y, const GLdepth z[],
GLubyte mask[])
void fxDDWriteDepthPixels(GLcontext *ctx,
GLuint n, const GLint x[], const GLint y[],
const GLdepth depth[], const GLubyte mask[])
{
fxMesaContext fxMesa=(fxMesaContext)ctx->DriverCtx;
GLushort depthdata[MAX_WIDTH];
GLdepth *zptr=depthdata;
GLubyte *m=mask;
GLuint i;
GLuint passed=0;
GLint bottom=fxMesa->height+fxMesa->y_offset-1;
GLuint i;
if (MESA_VERBOSE&VERBOSE_DRIVER) {
fprintf(stderr,"fxmesa: fxDDDepthTestSpanGeneric(...)\n");
fprintf(stderr,"fxmesa: fxDDReadDepthSpanInt(...)\n");
}
x+=fxMesa->x_offset;
FX_grLfbReadRegion(GR_BUFFER_AUXBUFFER,x,bottom-y,n,1,0,depthdata);
/* switch cases ordered from most frequent to less frequent */
switch (ctx->Depth.Func) {
case GL_LESS:
if (ctx->Depth.Mask) {
/* Update Z buffer */
for (i=0; i<n; i++,zptr++,m++) {
if (*m) {
if (z[i] < *zptr) {
/* pass */
*zptr = z[i];
passed++;
} else {
/* fail */
*m = 0;
}
}
}
} else {
/* Don't update Z buffer */
for (i=0; i<n; i++,zptr++,m++) {
if (*m) {
if (z[i] < *zptr) {
/* pass */
passed++;
} else {
*m = 0;
}
}
}
for (i = 0; i < n; i++) {
if (mask[i]) {
int xpos = x[i] + fxMesa->x_offset;
int ypos = bottom - y[i];
writeRegionClipped(fxMesa, GR_BUFFER_AUXBUFFER, xpos, ypos,
GR_LFB_SRC_FMT_ZA16, 1, 1, 0, (void *) &depth[i]);
}
break;
case GL_LEQUAL:
if (ctx->Depth.Mask) {
/* Update Z buffer */
for (i=0;i<n;i++,zptr++,m++) {
if (*m) {
if (z[i] <= *zptr) {
*zptr = z[i];
passed++;
} else {
*m = 0;
}
}
}
} else {
/* Don't update Z buffer */
for (i=0;i<n;i++,zptr++,m++) {
if (*m) {
if (z[i] <= *zptr) {
/* pass */
passed++;
} else {
*m = 0;
}
}
}
}
break;
case GL_GEQUAL:
if (ctx->Depth.Mask) {
/* Update Z buffer */
for (i=0;i<n;i++,zptr++,m++) {
if (*m) {
if (z[i] >= *zptr) {
*zptr = z[i];
passed++;
} else {
*m = 0;
}
}
}
} else {
/* Don't update Z buffer */
for (i=0;i<n;i++,zptr++,m++) {
if (*m) {
if (z[i] >= *zptr) {
/* pass */
passed++;
} else {
*m = 0;
}
}
}
}
break;
case GL_GREATER:
if (ctx->Depth.Mask) {
/* Update Z buffer */
for (i=0;i<n;i++,zptr++,m++) {
if (*m) {
if (z[i] > *zptr) {
*zptr = z[i];
passed++;
} else {
*m = 0;
}
}
}
} else {
/* Don't update Z buffer */
for (i=0;i<n;i++,zptr++,m++) {
if (*m) {
if (z[i] > *zptr) {
/* pass */
passed++;
} else {
*m = 0;
}
}
}
}
break;
case GL_NOTEQUAL:
if (ctx->Depth.Mask) {
/* Update Z buffer */
for (i=0;i<n;i++,zptr++,m++) {
if (*m) {
if (z[i] != *zptr) {
*zptr = z[i];
passed++;
} else {
*m = 0;
}
}
}
} else {
/* Don't update Z buffer */
for (i=0;i<n;i++,zptr++,m++) {
if (*m) {
if (z[i] != *zptr) {
/* pass */
passed++;
} else {
*m = 0;
}
}
}
}
break;
case GL_EQUAL:
if (ctx->Depth.Mask) {
/* Update Z buffer */
for (i=0;i<n;i++,zptr++,m++) {
if (*m) {
if (z[i] == *zptr) {
*zptr = z[i];
passed++;
} else {
*m =0;
}
}
}
} else {
/* Don't update Z buffer */
for (i=0;i<n;i++,zptr++,m++) {
if (*m) {
if (z[i] == *zptr) {
/* pass */
passed++;
} else {
*m =0;
}
}
}
}
break;
case GL_ALWAYS:
if (ctx->Depth.Mask) {
/* Update Z buffer */
for (i=0;i<n;i++,zptr++,m++) {
if (*m) {
*zptr = z[i];
passed++;
}
}
} else {
/* Don't update Z buffer or mask */
passed = n;
}
break;
case GL_NEVER:
for (i=0;i<n;i++) {
mask[i] = 0;
}
break;
default:
;
} /*switch*/
if(passed)
writeRegionClipped(fxMesa, GR_BUFFER_AUXBUFFER,x,bottom-y,GR_LFB_SRC_FMT_ZA16,n,1,0,depthdata);
return passed;
}
}
void fxDDDepthTestPixelsGeneric(GLcontext* ctx,
GLuint n, const GLint x[], const GLint y[],
const GLdepth z[], GLubyte mask[])
void fxDDReadDepthPixels(GLcontext *ctx, GLuint n,
const GLint x[], const GLint y[], GLdepth depth[])
{
fxMesaContext fxMesa=(fxMesaContext)ctx->DriverCtx;
GLdepth zval;
GLuint i;
GLint bottom=fxMesa->height+fxMesa->y_offset-1;
GLuint i;
if (MESA_VERBOSE&VERBOSE_DRIVER) {
fprintf(stderr,"fxmesa: fxDDDepthTestPixelsGeneric(...)\n");
fprintf(stderr,"fxmesa: fxDDReadDepthSpanInt(...)\n");
}
/* switch cases ordered from most frequent to less frequent */
switch (ctx->Depth.Func) {
case GL_LESS:
if (ctx->Depth.Mask) {
/* Update Z buffer */
for (i=0; i<n; i++) {
if (mask[i]) {
FX_grLfbReadRegion(GR_BUFFER_AUXBUFFER,x[i]+fxMesa->x_offset,bottom-y[i],1,1,0,&zval);
if (z[i] < zval) {
/* pass */
writeRegionClipped(fxMesa, GR_BUFFER_AUXBUFFER,x[i]+fxMesa->x_offset,bottom-y[i],GR_LFB_SRC_FMT_ZA16,1,1,0,(void*)&z[i]);
} else {
/* fail */
mask[i] = 0;
}
}
}
} else {
/* Don't update Z buffer */
for (i=0; i<n; i++) {
if (mask[i]) {
FX_grLfbReadRegion(GR_BUFFER_AUXBUFFER,x[i]+fxMesa->x_offset,bottom-y[i],1,1,0,&zval);
if (z[i] < zval) {
/* pass */
}
else {
/* fail */
mask[i] = 0;
}
}
}
}
break;
case GL_LEQUAL:
if (ctx->Depth.Mask) {
/* Update Z buffer */
for (i=0; i<n; i++) {
if (mask[i]) {
FX_grLfbReadRegion(GR_BUFFER_AUXBUFFER,x[i]+fxMesa->x_offset,bottom-y[i],1,1,0,&zval);
if (z[i] <= zval) {
/* pass */
writeRegionClipped(fxMesa, GR_BUFFER_AUXBUFFER,x[i]+fxMesa->x_offset,bottom-y[i],GR_LFB_SRC_FMT_ZA16,1,1,0,(void*)&z[i]);
} else {
/* fail */
mask[i] = 0;
}
}
}
} else {
/* Don't update Z buffer */
for (i=0; i<n; i++) {
if (mask[i]) {
FX_grLfbReadRegion(GR_BUFFER_AUXBUFFER,x[i]+fxMesa->x_offset,bottom-y[i],1,1,0,&zval);
if (z[i] <= zval) {
/* pass */
} else {
/* fail */
mask[i] = 0;
}
}
}
}
break;
case GL_GEQUAL:
if (ctx->Depth.Mask) {
/* Update Z buffer */
for (i=0; i<n; i++) {
if (mask[i]) {
FX_grLfbReadRegion(GR_BUFFER_AUXBUFFER,x[i]+fxMesa->x_offset,bottom-y[i],1,1,0,&zval);
if (z[i] >= zval) {
/* pass */
writeRegionClipped(fxMesa, GR_BUFFER_AUXBUFFER,x[i]+fxMesa->x_offset,bottom-y[i],GR_LFB_SRC_FMT_ZA16,1,1,0,(void*)&z[i]);
} else {
/* fail */
mask[i] = 0;
}
}
}
} else {
/* Don't update Z buffer */
for (i=0; i<n; i++) {
if (mask[i]) {
FX_grLfbReadRegion(GR_BUFFER_AUXBUFFER,x[i]+fxMesa->x_offset,bottom-y[i],1,1,0,&zval);
if (z[i] >= zval) {
/* pass */
} else {
/* fail */
mask[i] = 0;
}
}
}
}
break;
case GL_GREATER:
if (ctx->Depth.Mask) {
/* Update Z buffer */
for (i=0; i<n; i++) {
if (mask[i]) {
FX_grLfbReadRegion(GR_BUFFER_AUXBUFFER,x[i]+fxMesa->x_offset,bottom-y[i],1,1,0,&zval);
if (z[i] > zval) {
/* pass */
writeRegionClipped(fxMesa, GR_BUFFER_AUXBUFFER,x[i]+fxMesa->x_offset,bottom-y[i],GR_LFB_SRC_FMT_ZA16,1,1,0,(void*)&z[i]);
} else {
/* fail */
mask[i] = 0;
}
}
}
} else {
/* Don't update Z buffer */
for (i=0; i<n; i++) {
if (mask[i]) {
FX_grLfbReadRegion(GR_BUFFER_AUXBUFFER,x[i]+fxMesa->x_offset,bottom-y[i],1,1,0,&zval);
if (z[i] > zval) {
/* pass */
} else {
/* fail */
mask[i] = 0;
}
}
}
}
break;
case GL_NOTEQUAL:
if (ctx->Depth.Mask) {
/* Update Z buffer */
for (i=0; i<n; i++) {
if (mask[i]) {
FX_grLfbReadRegion(GR_BUFFER_AUXBUFFER,x[i]+fxMesa->x_offset,bottom-y[i],1,1,0,&zval);
if (z[i] != zval) {
/* pass */
writeRegionClipped(fxMesa, GR_BUFFER_AUXBUFFER,x[i]+fxMesa->x_offset,bottom-y[i],GR_LFB_SRC_FMT_ZA16,1,1,0,(void*)&z[i]);
} else {
/* fail */
mask[i] = 0;
}
}
}
} else {
/* Don't update Z buffer */
for (i=0; i<n; i++) {
if (mask[i]) {
FX_grLfbReadRegion(GR_BUFFER_AUXBUFFER,x[i]+fxMesa->x_offset,bottom-y[i],1,1,0,&zval);
if (z[i] != zval) {
/* pass */
}
else {
/* fail */
mask[i] = 0;
}
}
}
}
break;
case GL_EQUAL:
if (ctx->Depth.Mask) {
/* Update Z buffer */
for (i=0; i<n; i++) {
if (mask[i]) {
FX_grLfbReadRegion(GR_BUFFER_AUXBUFFER,x[i]+fxMesa->x_offset,bottom-y[i],1,1,0,&zval);
if (z[i] == zval) {
/* pass */
writeRegionClipped(fxMesa, GR_BUFFER_AUXBUFFER,x[i]+fxMesa->x_offset,bottom-y[i],GR_LFB_SRC_FMT_ZA16,1,1,0,(void*)&z[i]);
} else {
/* fail */
mask[i] = 0;
}
}
}
} else {
/* Don't update Z buffer */
for (i=0; i<n; i++) {
if (mask[i]) {
FX_grLfbReadRegion(GR_BUFFER_AUXBUFFER,x[i]+fxMesa->x_offset,bottom-y[i],1,1,0,&zval);
if (z[i] == zval) {
/* pass */
} else {
/* fail */
mask[i] = 0;
}
}
}
}
break;
case GL_ALWAYS:
if (ctx->Depth.Mask) {
/* Update Z buffer */
for (i=0; i<n; i++) {
if (mask[i]) {
writeRegionClipped(fxMesa, GR_BUFFER_AUXBUFFER,x[i]+fxMesa->x_offset,bottom-y[i],GR_LFB_SRC_FMT_ZA16,1,1,0,(void*)&z[i]);
}
}
} else {
/* Don't update Z buffer or mask */
}
break;
case GL_NEVER:
/* depth test never passes */
for (i=0;i<n;i++) {
mask[i] = 0;
}
break;
default:
;
} /*switch*/
for (i = 0; i < n; i++) {
int xpos = x[i] + fxMesa->x_offset;
int ypos = bottom - y[i];
FX_grLfbReadRegion(GR_BUFFER_AUXBUFFER,xpos,ypos,1,1,0,&depth[i]);
}
}
/************************************************************************/

23
src/mesa/drivers/glide/fxdrv.h
View File

@ -636,22 +636,19 @@ extern GLboolean fxDDColorMask(GLcontext *ctx,
GLboolean r, GLboolean g,
GLboolean b, GLboolean a );
extern GLuint fxDDDepthTestSpanGeneric(GLcontext *ctx,
GLuint n, GLint x, GLint y,
const GLdepth z[],
GLubyte mask[]);
extern void fxDDWriteDepthSpan(GLcontext *ctx, GLuint n, GLint x, GLint y,
const GLdepth depth[], const GLubyte mask[]);
extern void fxDDDepthTestPixelsGeneric(GLcontext* ctx,
GLuint n,
const GLint x[], const GLint y[],
const GLdepth z[], GLubyte mask[]);
extern void fxDDReadDepthSpan(GLcontext *ctx, GLuint n, GLint x, GLint y,
GLdepth depth[]);
extern void fxDDReadDepthSpanFloat(GLcontext *ctx,
GLuint n, GLint x, GLint y, GLfloat depth[]);
extern void fxDDReadDepthSpanInt(GLcontext *ctx,
GLuint n, GLint x, GLint y, GLdepth depth[]);
extern void fxDDWriteDepthPixels(GLcontext *ctx, GLuint n,
const GLint x[], const GLint y[],
const GLdepth depth[], const GLubyte mask[]);
extern void fxDDReadDepthPixels(GLcontext *ctx, GLuint n,
const GLint x[], const GLint y[],
GLdepth depth[]);
extern void fxDDFastPath( struct vertex_buffer *VB );