GLboolean
_mesa_texstore_rg_rgtc2(TEXSTORE_PARAMS)
{
GLubyte *dst;
const GLubyte *tempImage = NULL;
int i, j;
int numxpixels, numypixels;
const GLubyte *srcaddr;
GLubyte srcpixels[4][4];
GLubyte *blkaddr;
GLint dstRowDiff;
ASSERT(dstFormat == MESA_FORMAT_RG_RGTC2_UNORM ||
dstFormat == MESA_FORMAT_LA_LATC2_UNORM);
tempImage = _mesa_make_temp_ubyte_image(ctx, dims,
baseInternalFormat,
_mesa_get_format_base_format(dstFormat),
srcWidth, srcHeight, srcDepth,
srcFormat, srcType, srcAddr,
srcPacking);
if (!tempImage)
return GL_FALSE; /* out of memory */
dst = dstSlices[0];
blkaddr = dst;
dstRowDiff = dstRowStride >= (srcWidth * 4) ? dstRowStride - (((srcWidth + 3) & ~3) * 4) : 0;
for (j = 0; j < srcHeight; j+=4) {
if (srcHeight > j + 3) numypixels = 4;
else numypixels = srcHeight - j;
srcaddr = tempImage + j * srcWidth * 2;
for (i = 0; i < srcWidth; i += 4) {
if (srcWidth > i + 3) numxpixels = 4;
else numxpixels = srcWidth - i;
extractsrc_u(srcpixels, srcaddr, srcWidth, numxpixels, numypixels, 2);
util_format_unsigned_encode_rgtc_ubyte(blkaddr, srcpixels, numxpixels, numypixels);
blkaddr += 8;
extractsrc_u(srcpixels, (GLubyte *)srcaddr + 1, srcWidth, numxpixels, numypixels, 2);
util_format_unsigned_encode_rgtc_ubyte(blkaddr, srcpixels, numxpixels, numypixels);
blkaddr += 8;
srcaddr += numxpixels * 2;
}
blkaddr += dstRowDiff;
}
free((void *) tempImage);
return GL_TRUE;
}
GLboolean
_mesa_texstore_red_rgtc1(TEXSTORE_PARAMS)
{
GLubyte *dst;
const GLubyte *tempImage = NULL;
int i, j;
int numxpixels, numypixels;
const GLubyte *srcaddr;
GLubyte srcpixels[4][4];
GLubyte *blkaddr;
GLint dstRowDiff, redRowStride;
GLubyte *tempImageSlices[1];
assert(dstFormat == MESA_FORMAT_R_RGTC1_UNORM ||
dstFormat == MESA_FORMAT_L_LATC1_UNORM);
tempImage = malloc(srcWidth * srcHeight * 1 * sizeof(GLubyte));
if (!tempImage)
return GL_FALSE; /* out of memory */
redRowStride = 1 * srcWidth * sizeof(GLubyte);
tempImageSlices[0] = (GLubyte *) tempImage;
_mesa_texstore(ctx, dims,
baseInternalFormat,
MESA_FORMAT_R_UNORM8,
redRowStride, tempImageSlices,
srcWidth, srcHeight, srcDepth,
srcFormat, srcType, srcAddr,
srcPacking);
dst = dstSlices[0];
blkaddr = dst;
dstRowDiff = dstRowStride >= (srcWidth * 2) ? dstRowStride - (((srcWidth + 3) & ~3) * 2) : 0;
for (j = 0; j < srcHeight; j+=4) {
if (srcHeight > j + 3) numypixels = 4;
else numypixels = srcHeight - j;
srcaddr = tempImage + j * srcWidth;
for (i = 0; i < srcWidth; i += 4) {
if (srcWidth > i + 3) numxpixels = 4;
else numxpixels = srcWidth - i;
extractsrc_u(srcpixels, srcaddr, srcWidth, numxpixels, numypixels, 1);
util_format_unsigned_encode_rgtc_ubyte(blkaddr, srcpixels, numxpixels, numypixels);
srcaddr += numxpixels;
blkaddr += 8;
}
blkaddr += dstRowDiff;
}
free((void *) tempImage);
return GL_TRUE;
}
void
util_format_rxtc2_unorm_pack_rgba_float(uint8_t *dst_row, unsigned dst_stride, const float *src_row, unsigned src_stride, unsigned width, unsigned height, unsigned chan2off)
{
const unsigned bw = 4, bh = 4, bytes_per_block = 16;
unsigned x, y, i, j;
for(y = 0; y < height; y += bh) {
uint8_t *dst = dst_row;
for(x = 0; x < width; x += bw) {
uint8_t tmp_r[4][4]; /* [bh][bw][comps] */
uint8_t tmp_g[4][4]; /* [bh][bw][comps] */
for(j = 0; j < bh; ++j) {
for(i = 0; i < bw; ++i) {
tmp_r[j][i] = float_to_ubyte(src_row[(y + j)*src_stride/sizeof(*src_row) + (x + i)*4]);
tmp_g[j][i] = float_to_ubyte(src_row[(y + j)*src_stride/sizeof(*src_row) + (x + i)*4 + chan2off]);
}
}
util_format_unsigned_encode_rgtc_ubyte(dst, tmp_r, 4, 4);
util_format_unsigned_encode_rgtc_ubyte(dst + 8, tmp_g, 4, 4);
dst += bytes_per_block;
}
dst_row += dst_stride / sizeof(*dst_row);
}
}
void
util_format_rgtc1_unorm_pack_rgba_8unorm(uint8_t *dst_row, unsigned dst_stride, const uint8_t *src_row,
unsigned src_stride, unsigned width, unsigned height)
{
const unsigned bw = 4, bh = 4, bytes_per_block = 8;
unsigned x, y, i, j;
for(y = 0; y < height; y += bh) {
uint8_t *dst = dst_row;
for(x = 0; x < width; x += bw) {
uint8_t tmp[4][4]; /* [bh][bw][comps] */
for(j = 0; j < bh; ++j) {
for(i = 0; i < bw; ++i) {
tmp[j][i] = src_row[(y + j)*src_stride/sizeof(*src_row) + (x + i)*4];
}
}
util_format_unsigned_encode_rgtc_ubyte(dst, tmp, 4, 4);
dst += bytes_per_block;
}
dst_row += dst_stride / sizeof(*dst_row);
}
}
GLboolean
_mesa_texstore_rg_rgtc2(TEXSTORE_PARAMS)
{
GLubyte *dst;
const GLubyte *tempImage = NULL;
int i, j;
int numxpixels, numypixels;
const GLubyte *srcaddr;
GLubyte srcpixels[4][4];
GLubyte *blkaddr;
GLint dstRowDiff, rgRowStride;
mesa_format tempFormat;
GLubyte *tempImageSlices[1];
assert(dstFormat == MESA_FORMAT_RG_RGTC2_UNORM ||
dstFormat == MESA_FORMAT_LA_LATC2_UNORM);
if (baseInternalFormat == GL_RG)
tempFormat = _mesa_little_endian() ? MESA_FORMAT_R8G8_UNORM
: MESA_FORMAT_G8R8_UNORM;
else
tempFormat = _mesa_little_endian() ? MESA_FORMAT_L8A8_UNORM
: MESA_FORMAT_A8L8_UNORM;
rgRowStride = 2 * srcWidth * sizeof(GLubyte);
tempImage = malloc(srcWidth * srcHeight * 2 * sizeof(GLubyte));
if (!tempImage)
return GL_FALSE; /* out of memory */
tempImageSlices[0] = (GLubyte *) tempImage;
_mesa_texstore(ctx, dims,
baseInternalFormat,
tempFormat,
rgRowStride, tempImageSlices,
srcWidth, srcHeight, srcDepth,
srcFormat, srcType, srcAddr,
srcPacking);
dst = dstSlices[0];
blkaddr = dst;
dstRowDiff = dstRowStride >= (srcWidth * 4) ? dstRowStride - (((srcWidth + 3) & ~3) * 4) : 0;
for (j = 0; j < srcHeight; j+=4) {
if (srcHeight > j + 3) numypixels = 4;
else numypixels = srcHeight - j;
srcaddr = tempImage + j * srcWidth * 2;
for (i = 0; i < srcWidth; i += 4) {
if (srcWidth > i + 3) numxpixels = 4;
else numxpixels = srcWidth - i;
extractsrc_u(srcpixels, srcaddr, srcWidth, numxpixels, numypixels, 2);
util_format_unsigned_encode_rgtc_ubyte(blkaddr, srcpixels, numxpixels, numypixels);
blkaddr += 8;
extractsrc_u(srcpixels, (GLubyte *)srcaddr + 1, srcWidth, numxpixels, numypixels, 2);
util_format_unsigned_encode_rgtc_ubyte(blkaddr, srcpixels, numxpixels, numypixels);
blkaddr += 8;
srcaddr += numxpixels * 2;
}
blkaddr += dstRowDiff;
}
free((void *) tempImage);
return GL_TRUE;
}
