mesa: Split tx_compress_dxtn into per-format functions
This avoids an unnecessary switch statement in many cases. Reviewed-by: Marek Olšák <marek.olsak@amd.com> Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/16631>
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@ -84,9 +84,7 @@ _mesa_texstore_rgb_dxt1(TEXSTORE_PARAMS)
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dst = dstSlices[0];
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tx_compress_dxtn(3, srcWidth, srcHeight, pixels,
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GL_COMPRESSED_RGB_S3TC_DXT1_EXT,
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dst, dstRowStride);
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tx_compress_dxt1(3, srcWidth, srcHeight, pixels, dst, dstRowStride, 3);
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free((void *) tempImage);
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@ -140,9 +138,7 @@ _mesa_texstore_rgba_dxt1(TEXSTORE_PARAMS)
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dst = dstSlices[0];
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tx_compress_dxtn(4, srcWidth, srcHeight, pixels,
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GL_COMPRESSED_RGBA_S3TC_DXT1_EXT,
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dst, dstRowStride);
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tx_compress_dxt1(4, srcWidth, srcHeight, pixels, dst, dstRowStride, 4);
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free((void*) tempImage);
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@ -195,9 +191,7 @@ _mesa_texstore_rgba_dxt3(TEXSTORE_PARAMS)
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dst = dstSlices[0];
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tx_compress_dxtn(4, srcWidth, srcHeight, pixels,
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GL_COMPRESSED_RGBA_S3TC_DXT3_EXT,
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dst, dstRowStride);
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tx_compress_dxt3(4, srcWidth, srcHeight, pixels, dst, dstRowStride);
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free((void *) tempImage);
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@ -250,9 +244,7 @@ _mesa_texstore_rgba_dxt5(TEXSTORE_PARAMS)
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dst = dstSlices[0];
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tx_compress_dxtn(4, srcWidth, srcHeight, pixels,
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GL_COMPRESSED_RGBA_S3TC_DXT5_EXT,
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dst, dstRowStride);
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tx_compress_dxt5(4, srcWidth, srcHeight, pixels, dst, dstRowStride);
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free((void *) tempImage);
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@ -906,88 +906,132 @@ static void extractsrccolors( GLubyte srcpixels[4][4][4], const GLchan *srcaddr,
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}
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static void tx_compress_dxtn(GLint srccomps, GLint width, GLint height, const GLubyte *srcPixData,
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GLenum destFormat, GLubyte *dest, GLint dstRowStride)
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static void
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tx_compress_dxt1(int srccomps, int width, int height,
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const GLubyte *srcPixData, GLubyte *dest, int dstRowStride,
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unsigned dstComps)
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{
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GLubyte *blkaddr = dest;
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GLubyte srcpixels[4][4][4];
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const GLchan *srcaddr = srcPixData;
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GLint numxpixels, numypixels;
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GLint i, j;
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GLint dstRowDiff;
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GLenum destFormat = dstComps == 3 ? GL_COMPRESSED_RGB_S3TC_DXT1_EXT
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: GL_COMPRESSED_RGBA_S3TC_DXT1_EXT;
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GLubyte *blkaddr = dest;
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GLubyte srcpixels[4][4][4];
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const GLchan *srcaddr = srcPixData;
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int numxpixels, numypixels;
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/* hmm we used to get called without dstRowStride... */
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int dstRowDiff = dstRowStride >= (width * 2) ?
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dstRowStride - (((width + 3) & ~3) * 2) : 0;
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/* fprintf(stderr, "dxt1 tex width %d tex height %d dstRowStride %d\n",
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width, height, dstRowStride); */
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for (int j = 0; j < height; j += 4) {
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if (height > j + 3) numypixels = 4;
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else numypixels = height - j;
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srcaddr = srcPixData + j * width * srccomps;
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for (int i = 0; i < width; i += 4) {
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if (width > i + 3) numxpixels = 4;
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else numxpixels = width - i;
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extractsrccolors(srcpixels, srcaddr, width, numxpixels, numypixels, srccomps);
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encodedxtcolorblockfaster(blkaddr, srcpixels, numxpixels, numypixels, destFormat);
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srcaddr += srccomps * numxpixels;
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blkaddr += 8;
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}
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blkaddr += dstRowDiff;
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}
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}
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static void
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tx_compress_dxt3(int srccomps, int width, int height,
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const GLubyte *srcPixData, GLubyte *dest, int dstRowStride)
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{
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GLenum destFormat = GL_COMPRESSED_RGBA_S3TC_DXT3_EXT;
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GLubyte *blkaddr = dest;
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GLubyte srcpixels[4][4][4];
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const GLchan *srcaddr = srcPixData;
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int numxpixels, numypixels;
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int dstRowDiff = dstRowStride >= (width * 4) ?
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dstRowStride - (((width + 3) & ~3) * 4) : 0;
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/* fprintf(stderr, "dxt3 tex width %d tex height %d dstRowStride %d\n",
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width, height, dstRowStride); */
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for (int j = 0; j < height; j += 4) {
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if (height > j + 3) numypixels = 4;
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else numypixels = height - j;
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srcaddr = srcPixData + j * width * srccomps;
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for (int i = 0; i < width; i += 4) {
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if (width > i + 3) numxpixels = 4;
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else numxpixels = width - i;
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extractsrccolors(srcpixels, srcaddr, width, numxpixels, numypixels, srccomps);
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*blkaddr++ = (srcpixels[0][0][3] >> 4) | (srcpixels[0][1][3] & 0xf0);
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*blkaddr++ = (srcpixels[0][2][3] >> 4) | (srcpixels[0][3][3] & 0xf0);
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*blkaddr++ = (srcpixels[1][0][3] >> 4) | (srcpixels[1][1][3] & 0xf0);
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*blkaddr++ = (srcpixels[1][2][3] >> 4) | (srcpixels[1][3][3] & 0xf0);
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*blkaddr++ = (srcpixels[2][0][3] >> 4) | (srcpixels[2][1][3] & 0xf0);
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*blkaddr++ = (srcpixels[2][2][3] >> 4) | (srcpixels[2][3][3] & 0xf0);
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*blkaddr++ = (srcpixels[3][0][3] >> 4) | (srcpixels[3][1][3] & 0xf0);
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*blkaddr++ = (srcpixels[3][2][3] >> 4) | (srcpixels[3][3][3] & 0xf0);
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encodedxtcolorblockfaster(blkaddr, srcpixels, numxpixels, numypixels, destFormat);
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srcaddr += srccomps * numxpixels;
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blkaddr += 8;
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}
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blkaddr += dstRowDiff;
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}
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}
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static void
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tx_compress_dxt5(int srccomps, int width, int height,
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const GLubyte *srcPixData, GLubyte *dest, int dstRowStride)
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{
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GLenum destFormat = GL_COMPRESSED_RGBA_S3TC_DXT5_EXT;
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GLubyte *blkaddr = dest;
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GLubyte srcpixels[4][4][4];
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const GLchan *srcaddr = srcPixData;
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int numxpixels, numypixels;
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int dstRowDiff = dstRowStride >= (width * 4) ?
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dstRowStride - (((width + 3) & ~3) * 4) : 0;
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/* fprintf(stderr, "dxt5 tex width %d tex height %d dstRowStride %d\n",
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width, height, dstRowStride); */
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for (int j = 0; j < height; j += 4) {
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if (height > j + 3) numypixels = 4;
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else numypixels = height - j;
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srcaddr = srcPixData + j * width * srccomps;
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for (int i = 0; i < width; i += 4) {
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if (width > i + 3) numxpixels = 4;
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else numxpixels = width - i;
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extractsrccolors(srcpixels, srcaddr, width, numxpixels, numypixels, srccomps);
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encodedxt5alpha(blkaddr, srcpixels, numxpixels, numypixels);
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encodedxtcolorblockfaster(blkaddr + 8, srcpixels, numxpixels, numypixels, destFormat);
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srcaddr += srccomps * numxpixels;
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blkaddr += 16;
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}
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blkaddr += dstRowDiff;
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}
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}
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static void
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tx_compress_dxtn(GLint srccomps, GLint width, GLint height,
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const GLubyte *srcPixData, GLenum destFormat,
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GLubyte *dest, GLint dstRowStride)
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{
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switch (destFormat) {
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case GL_COMPRESSED_RGB_S3TC_DXT1_EXT:
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tx_compress_dxt1(srccomps, width, height, srcPixData,
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dest, dstRowStride, 3);
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break;
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case GL_COMPRESSED_RGBA_S3TC_DXT1_EXT:
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/* hmm we used to get called without dstRowStride... */
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dstRowDiff = dstRowStride >= (width * 2) ? dstRowStride - (((width + 3) & ~3) * 2) : 0;
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/* fprintf(stderr, "dxt1 tex width %d tex height %d dstRowStride %d\n",
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width, height, dstRowStride); */
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for (j = 0; j < height; j += 4) {
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if (height > j + 3) numypixels = 4;
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else numypixels = height - j;
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srcaddr = srcPixData + j * width * srccomps;
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for (i = 0; i < width; i += 4) {
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if (width > i + 3) numxpixels = 4;
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else numxpixels = width - i;
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extractsrccolors(srcpixels, srcaddr, width, numxpixels, numypixels, srccomps);
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encodedxtcolorblockfaster(blkaddr, srcpixels, numxpixels, numypixels, destFormat);
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srcaddr += srccomps * numxpixels;
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blkaddr += 8;
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}
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blkaddr += dstRowDiff;
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}
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tx_compress_dxt1(srccomps, width, height, srcPixData,
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dest, dstRowStride, 4);
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break;
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case GL_COMPRESSED_RGBA_S3TC_DXT3_EXT:
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dstRowDiff = dstRowStride >= (width * 4) ? dstRowStride - (((width + 3) & ~3) * 4) : 0;
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/* fprintf(stderr, "dxt3 tex width %d tex height %d dstRowStride %d\n",
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width, height, dstRowStride); */
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for (j = 0; j < height; j += 4) {
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if (height > j + 3) numypixels = 4;
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else numypixels = height - j;
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srcaddr = srcPixData + j * width * srccomps;
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for (i = 0; i < width; i += 4) {
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if (width > i + 3) numxpixels = 4;
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else numxpixels = width - i;
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extractsrccolors(srcpixels, srcaddr, width, numxpixels, numypixels, srccomps);
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*blkaddr++ = (srcpixels[0][0][3] >> 4) | (srcpixels[0][1][3] & 0xf0);
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*blkaddr++ = (srcpixels[0][2][3] >> 4) | (srcpixels[0][3][3] & 0xf0);
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*blkaddr++ = (srcpixels[1][0][3] >> 4) | (srcpixels[1][1][3] & 0xf0);
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*blkaddr++ = (srcpixels[1][2][3] >> 4) | (srcpixels[1][3][3] & 0xf0);
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*blkaddr++ = (srcpixels[2][0][3] >> 4) | (srcpixels[2][1][3] & 0xf0);
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*blkaddr++ = (srcpixels[2][2][3] >> 4) | (srcpixels[2][3][3] & 0xf0);
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*blkaddr++ = (srcpixels[3][0][3] >> 4) | (srcpixels[3][1][3] & 0xf0);
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*blkaddr++ = (srcpixels[3][2][3] >> 4) | (srcpixels[3][3][3] & 0xf0);
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encodedxtcolorblockfaster(blkaddr, srcpixels, numxpixels, numypixels, destFormat);
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srcaddr += srccomps * numxpixels;
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blkaddr += 8;
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}
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blkaddr += dstRowDiff;
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}
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tx_compress_dxt3(srccomps, width, height, srcPixData,
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dest, dstRowStride);
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break;
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case GL_COMPRESSED_RGBA_S3TC_DXT5_EXT:
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dstRowDiff = dstRowStride >= (width * 4) ? dstRowStride - (((width + 3) & ~3) * 4) : 0;
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/* fprintf(stderr, "dxt5 tex width %d tex height %d dstRowStride %d\n",
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width, height, dstRowStride); */
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for (j = 0; j < height; j += 4) {
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if (height > j + 3) numypixels = 4;
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else numypixels = height - j;
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srcaddr = srcPixData + j * width * srccomps;
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for (i = 0; i < width; i += 4) {
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if (width > i + 3) numxpixels = 4;
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else numxpixels = width - i;
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extractsrccolors(srcpixels, srcaddr, width, numxpixels, numypixels, srccomps);
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encodedxt5alpha(blkaddr, srcpixels, numxpixels, numypixels);
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encodedxtcolorblockfaster(blkaddr + 8, srcpixels, numxpixels, numypixels, destFormat);
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srcaddr += srccomps * numxpixels;
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blkaddr += 16;
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}
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blkaddr += dstRowDiff;
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}
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tx_compress_dxt5(srccomps, width, height, srcPixData,
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dest, dstRowStride);
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break;
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default:
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assert(false);
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return;
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unreachable("unknown DXTn format");
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}
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}
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