util: Remove the hand written SRGB format support code.

diff --git a/src/gallium/auxiliary/util/u_tile.c b/src/gallium/auxiliary/util/u_tile.c
index 43b45eb92606c6b1332a2d1c91bb754c1cfb8ce9..33cdbe401576ae79d776d894d72dc7438fdc5830 100644 (file)
--- a/src/gallium/auxiliary/util/u_tile.c
+++ b/src/gallium/auxiliary/util/u_tile.c
@@ -137,185 +137,6 @@ z16_get_tile_rgba(const ushort *src,
 
 
 
-/*** PIPE_FORMAT_A8B8G8R8_SRGB ***/
-
-/**
- * Convert an 8-bit sRGB value from non-linear space to a
- * linear RGB value in [0, 1].
- * Implemented with a 256-entry lookup table.
- */
-static INLINE float
-srgb_to_linear(ubyte cs8)
-{
-   static float table[256];
-   static boolean tableReady = FALSE;
-   if (!tableReady) {
-      /* compute lookup table now */
-      uint i;
-      for (i = 0; i < 256; i++) {
-         const float cs = ubyte_to_float(i);
-         if (cs <= 0.04045) {
-            table[i] = cs / 12.92f;
-         }
-         else {
-            table[i] = (float) powf((cs + 0.055) / 1.055, 2.4);
-         }
-      }
-      tableReady = TRUE;
-   }
-   return table[cs8];
-}
-
-
-/**
- * Convert linear float in [0,1] to an srgb ubyte value in [0,255].
- * XXX this hasn't been tested (render to srgb surface).
- * XXX this needs optimization.
- */
-static INLINE ubyte
-linear_to_srgb(float cl)
-{
-   if (cl >= 1.0F)
-      return 255;
-   else if (cl >= 0.0031308F)
-      return float_to_ubyte(1.055F * powf(cl, 0.41666F) - 0.055F);
-   else if (cl > 0.0F)
-      return float_to_ubyte(12.92F * cl);
-   else
-      return 0.0;
-}
-
-
-static void
-a8r8g8b8_srgb_get_tile_rgba(const unsigned *src,
-                            unsigned w, unsigned h,
-                            float *p,
-                            unsigned dst_stride)
-{
-   unsigned i, j;
-
-   for (i = 0; i < h; i++) {
-      float *pRow = p;
-      for (j = 0; j < w; j++, pRow += 4) {
-         const unsigned pixel = *src++;
-         pRow[0] = srgb_to_linear((pixel >> 16) & 0xff);
-         pRow[1] = srgb_to_linear((pixel >>  8) & 0xff);
-         pRow[2] = srgb_to_linear((pixel >>  0) & 0xff);
-         pRow[3] = ubyte_to_float((pixel >> 24) & 0xff);
-      }
-      p += dst_stride;
-   }
-}
-
-static void
-a8r8g8b8_srgb_put_tile_rgba(unsigned *dst,
-                            unsigned w, unsigned h,
-                            const float *p,
-                            unsigned src_stride)
-{
-   unsigned i, j;
-
-   for (i = 0; i < h; i++) {
-      const float *pRow = p;
-      for (j = 0; j < w; j++, pRow += 4) {
-         unsigned r, g, b, a;
-         r = linear_to_srgb(pRow[0]);
-         g = linear_to_srgb(pRow[1]);
-         b = linear_to_srgb(pRow[2]);
-         a = float_to_ubyte(pRow[3]);
-         *dst++ = (a << 24) | (r << 16) | (g << 8) | b;
-      }
-      p += src_stride;
-   }
-}
-
-
-/*** PIPE_FORMAT_L8A8_SRGB ***/
-
-static void
-a8l8_srgb_get_tile_rgba(const ushort *src,
-                        unsigned w, unsigned h,
-                        float *p,
-                        unsigned dst_stride)
-{
-   unsigned i, j;
-
-   for (i = 0; i < h; i++) {
-      float *pRow = p;
-      for (j = 0; j < w; j++, pRow += 4) {
-         ushort p = *src++;
-         pRow[0] =
-         pRow[1] =
-         pRow[2] = srgb_to_linear(p & 0xff);
-         pRow[3] = ubyte_to_float(p >> 8);
-      }
-      p += dst_stride;
-   }
-}
-
-static void
-a8l8_srgb_put_tile_rgba(ushort *dst,
-                        unsigned w, unsigned h,
-                        const float *p,
-                        unsigned src_stride)
-{
-   unsigned i, j;
-
-   for (i = 0; i < h; i++) {
-      const float *pRow = p;
-      for (j = 0; j < w; j++, pRow += 4) {
-         unsigned r, a;
-         r = linear_to_srgb(pRow[0]);
-         a = float_to_ubyte(pRow[3]);
-         *dst++ = (a << 8) | r;
-      }
-      p += src_stride;
-   }
-}
-
-
-/*** PIPE_FORMAT_L8_SRGB ***/
-
-static void
-l8_srgb_get_tile_rgba(const ubyte *src,
-                      unsigned w, unsigned h,
-                      float *p,
-                      unsigned dst_stride)
-{
-   unsigned i, j;
-
-   for (i = 0; i < h; i++) {
-      float *pRow = p;
-      for (j = 0; j < w; j++, src++, pRow += 4) {
-         pRow[0] =
-         pRow[1] =
-         pRow[2] = srgb_to_linear(*src);
-         pRow[3] = 1.0;
-      }
-      p += dst_stride;
-   }
-}
-
-static void
-l8_srgb_put_tile_rgba(ubyte *dst,
-                      unsigned w, unsigned h,
-                      const float *p,
-                      unsigned src_stride)
-{
-   unsigned i, j;
-
-   for (i = 0; i < h; i++) {
-      const float *pRow = p;
-      for (j = 0; j < w; j++, pRow += 4) {
-         unsigned r;
-         r = linear_to_srgb(pRow[0]);
-         *dst++ = (ubyte) r;
-      }
-      p += src_stride;
-   }
-}
-
-
 /*** PIPE_FORMAT_Z32_UNORM ***/
 
 /**
@@ -518,15 +339,6 @@ pipe_tile_raw_to_rgba(enum pipe_format format,
                       float *dst, unsigned dst_stride)
 {
    switch (format) {
-   case PIPE_FORMAT_B8G8R8A8_SRGB:
-      a8r8g8b8_srgb_get_tile_rgba((unsigned *) src, w, h, dst, dst_stride);
-      break;
-   case PIPE_FORMAT_L8A8_SRGB:
-      a8l8_srgb_get_tile_rgba((ushort *) src, w, h, dst, dst_stride);
-      break;
-   case PIPE_FORMAT_L8_SRGB:
-      l8_srgb_get_tile_rgba((ubyte *) src, w, h, dst, dst_stride);
-      break;
    case PIPE_FORMAT_Z16_UNORM:
       z16_get_tile_rgba((ushort *) src, w, h, dst, dst_stride);
       break;
@@ -670,15 +482,6 @@ pipe_put_tile_rgba(struct pipe_context *pipe,
       return;
 
    switch (format) {
-   case PIPE_FORMAT_B8G8R8A8_SRGB:
-      a8r8g8b8_srgb_put_tile_rgba((unsigned *) packed, w, h, p, src_stride);
-      break;
-   case PIPE_FORMAT_L8A8_SRGB:
-      a8l8_srgb_put_tile_rgba((ushort *) packed, w, h, p, src_stride);
-      break;
-   case PIPE_FORMAT_L8_SRGB:
-      l8_srgb_put_tile_rgba((ubyte *) packed, w, h, p, src_stride);
-      break;
    case PIPE_FORMAT_Z16_UNORM:
       /*z16_put_tile_rgba((ushort *) packed, w, h, p, src_stride);*/
       break;