KonstantinSeurer
/
mesa
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

added support for GL_RGB5_A1 internal texture format (Eero Pajarre)

This commit is contained in:
Brian Paul 2000-02-04 16:23:47 +00:00
parent b13fd0bc9e
commit 38a683816b
1 changed files with 89 additions and 7 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

96
src/mesa/drivers/glide/fxddtex.c
View File

@ -659,6 +659,10 @@ int fxTexGetInfo(int w, int h, GrLOD_t *lodlevel, GrAspectRatio_t *ar,
return 1;
}
/*
* Given an OpenGL internal texture format, return the corresponding
* Glide internal texture format and base texture format.
*/
void fxTexGetFormat(GLenum glformat, GrTextureFormat_t *tfmt, GLint *ifmt)
{
switch(glformat) {
@ -724,7 +728,6 @@ void fxTexGetFormat(GLenum glformat, GrTextureFormat_t *tfmt, GLint *ifmt)
case GL_RGBA:
case GL_RGBA2:
case GL_RGBA4:
case GL_RGB5_A1:
case GL_RGBA8:
case GL_RGB10_A2:
case GL_RGBA12:
@ -734,6 +737,12 @@ void fxTexGetFormat(GLenum glformat, GrTextureFormat_t *tfmt, GLint *ifmt)
if(ifmt)
(*ifmt)=GL_RGBA;
break;
case GL_RGB5_A1:
if(tfmt)
(*tfmt)=GR_TEXFMT_ARGB_1555;
if(ifmt)
(*ifmt)=GL_RGBA;
break;
case GL_COLOR_INDEX:
case GL_COLOR_INDEX1_EXT:
case GL_COLOR_INDEX2_EXT:
@ -961,7 +970,7 @@ static void fxTexBuildImageMap(const struct gl_texture_image *image,
if(wscale==hscale==1) {
int i=0;
int lenght=h*w;
unsigned short r,g,b;
unsigned int r,g,b;
while(i++<lenght) {
r=*data++;
@ -973,7 +982,7 @@ static void fxTexBuildImageMap(const struct gl_texture_image *image,
((0xf8 & b) >> 3);
}
} else {
unsigned short r,g,b;
unsigned int r,g,b;
for(y=0;y<h;y++)
for(x=0;x<w;x++) {
@ -992,7 +1001,6 @@ static void fxTexBuildImageMap(const struct gl_texture_image *image,
case GL_RGBA:
case GL_RGBA2:
case GL_RGBA4:
case GL_RGB5_A1:
case GL_RGBA8:
case GL_RGB10_A2:
case GL_RGBA12:
@ -1011,7 +1019,7 @@ static void fxTexBuildImageMap(const struct gl_texture_image *image,
if(wscale==hscale==1) {
int i=0;
int lenght=h*w;
unsigned short r,g,b,a;
unsigned int r,g,b,a;
while(i++<lenght) {
r=*data++;
@ -1025,7 +1033,7 @@ static void fxTexBuildImageMap(const struct gl_texture_image *image,
((0xf0 & b) >> 4);
}
} else {
unsigned short r,g,b,a;
unsigned int r,g,b,a;
for(y=0;y<h;y++)
for(x=0;x<w;x++) {
@ -1042,6 +1050,51 @@ static void fxTexBuildImageMap(const struct gl_texture_image *image,
}
}
break;
case GL_RGB5_A1:
(*istranslate)=GL_TRUE;
if(!(*dest)) {
if(!((*dest)=src=(unsigned short *)malloc(sizeof(unsigned short)*w*h))) {
fprintf(stderr,"fx Driver: out of memory !\n");
fxCloseHardware();
exit(-1);
}
} else
src=(*dest);
if(wscale==hscale==1) {
int i=0;
int lenght=h*w;
unsigned r,g,b,a;
while(i++<lenght) {
r=*data++;
g=*data++;
b=*data++;
a=*data++;
*src++=((0x80 & a) << 8) |
((0xf8 & r) << 7) |
((0xf8 & g) << 2) |
((0xf8 & b) >> 3);
}
} else {
unsigned r,g,b,a;
for(y=0;y<h;y++)
for(x=0;x<w;x++) {
idx=(x/wscale+(y/hscale)*(w/wscale))*4;
r=data[idx];
g=data[idx+1];
b=data[idx+2];
a=data[idx+3];
src[x+y*w]=((0x80 & a) << 8) |
((0xf8 & r) << 7) |
((0xf8 & g) << 2) |
((0xf8 & b) >> 3);
}
}
break;
default:
fprintf(stderr,"fx Driver: wrong internalFormat in texbuildimagemap()\n");
fxCloseHardware();
@ -1231,7 +1284,6 @@ static void fxTexBuildSubImageMap(const struct gl_texture_image *image,
case GL_RGBA:
case GL_RGBA2:
case GL_RGBA4:
case GL_RGB5_A1:
case GL_RGBA8:
case GL_RGB10_A2:
case GL_RGBA12:
@ -1264,6 +1316,36 @@ static void fxTexBuildSubImageMap(const struct gl_texture_image *image,
}
}
break;
case GL_RGB5_A1:
{
int x,y;
unsigned char *src;
unsigned short *dst,r,g,b,a;
int simgw,dimgw;
src=(unsigned char *)(image->Data+(yoffset*image->Width+xoffset)*4);
dst=destimg+(yoffset*image->Width+xoffset);
simgw=(image->Width-width)*4;
dimgw=image->Width-width;
for(y=0;y<height;y++) {
for(x=0;x<width;x++) {
r=*src++;
g=*src++;
b=*src++;
a=*src++;
*dst++=
((0x80 & a) << 8) |
((0xf8 & r) << 7) |
((0xf8 & g) << 2) |
((0xf8 & b) >> 3);
}
src += simgw;
dst += dimgw;
}
}
break;
default:
fprintf(stderr,"fx Driver: wrong internalFormat in fxTexBuildSubImageMap()\n");
fxCloseHardware();