[Mesa-dev] [PATCH 05/27] mesa: Add necessary support to decode multiple ETC2 texture formats

[Anuj Phogat]

Signed-off-by: Anuj Phogat <anuj.phogat at gmail.com>
---
 src/mesa/main/texcompress_etc.c |   17 +++++++++--------
 src/mesa/main/texcompress_etc.h |    3 ++-
 2 files changed, 11 insertions(+), 9 deletions(-)

diff --git a/src/mesa/main/texcompress_etc.c b/src/mesa/main/texcompress_etc.c
index cf8b687..8294144 100644
--- a/src/mesa/main/texcompress_etc.c
+++ b/src/mesa/main/texcompress_etc.c
@@ -23,9 +23,9 @@
 
 /**
  * \file texcompress_etc.c
+ * GL_OES_compressed_ETC1_RGB8_texture support.
  * Supported ETC2 texture formats are:
  * GL_COMPRESSED_RGB8_ETC2
- * GL_OES_compressed_ETC1_RGB8_texture support.
  */
 
 
@@ -289,7 +289,7 @@ etc2_clamp(int color)
 }
 
 static void
-etc2_parse_block(struct etc2_block *block, const GLubyte *src)
+etc2_rgb8_parse_block(struct etc2_block *block, const GLubyte *src)
 {
    unsigned i;
    GLboolean diffbit = src[3] & 0x2;
@@ -408,7 +408,7 @@ etc2_parse_block(struct etc2_block *block, const GLubyte *src)
 }
 
 static void
-etc2_fetch_texel(const struct etc2_block *block,
+etc2_rgb8_fetch_texel(const struct etc2_block *block,
       int x, int y, GLubyte *dst)
 {
    const GLubyte *base_color;
@@ -475,12 +475,12 @@ etc2_unpack_rgb8(uint8_t *dst_row,
       const uint8_t *src = src_row;
 
       for (x = 0; x < width; x+= bw) {
-         etc2_parse_block(&block, src);
+         etc2_rgb8_parse_block(&block, src);
 
          for (j = 0; j < bh; j++) {
             uint8_t *dst = dst_row + (y + j) * dst_stride + x * comps;
             for (i = 0; i < bw; i++) {
-               etc2_fetch_texel(&block, i, j, dst);
+               etc2_rgb8_fetch_texel(&block, i, j, dst);
                dst[3] = 255;
                dst += comps;
             }
@@ -514,8 +514,8 @@ _mesa_fetch_texel_2d_f_etc2_rgb8(const struct swrast_texture_image *texImage,
    src = (const GLubyte *) texImage->Map +
       (((texImage->RowStride + 3) / 4) * (j / 4) + (i / 4)) * 8;
 
-   etc2_parse_block(&block, src);
-   etc2_fetch_texel(&block, i % 4, j % 4, dst);
+   etc2_rgb8_parse_block(&block, src);
+   etc2_rgb8_fetch_texel(&block, i % 4, j % 4, dst);
 
    texel[RCOMP] = UBYTE_TO_FLOAT(dst[0]);
    texel[GCOMP] = UBYTE_TO_FLOAT(dst[1]);
@@ -541,7 +541,8 @@ _mesa_unpack_etc2_format(uint8_t *dst_row,
                          const uint8_t *src_row,
                          unsigned src_stride,
                          unsigned src_width,
-                         unsigned src_height)
+                         unsigned src_height,
+                         gl_format format)
 {
    etc2_unpack_rgb8(dst_row, dst_stride,
                     src_row, src_stride,
diff --git a/src/mesa/main/texcompress_etc.h b/src/mesa/main/texcompress_etc.h
index 8c6a40d..2508f5f 100644
--- a/src/mesa/main/texcompress_etc.h
+++ b/src/mesa/main/texcompress_etc.h
@@ -56,5 +56,6 @@ _mesa_unpack_etc2_format(uint8_t *dst_row,
                          const uint8_t *src_row,
                          unsigned src_stride,
                          unsigned src_width,
-                         unsigned src_height);
+                         unsigned src_height,
+                         gl_format format);
 #endif
-- 
1.7.7.6