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authorMarek Olšák <maraeo@gmail.com>2010-12-21 23:46:32 +0100
committerMarek Olšák <maraeo@gmail.com>2010-12-23 16:54:58 +0100
commitbae9d511f343c7bd5eb66d1d1d18d32b47e738e3 (patch)
treede35f27d177317ca075b6ad18445ddee0f30d9f6 /src/mesa/main/texstore.c
parent621e5254ef6714520f106bd3707fe6ddc279aa0c (diff)
mesa: implement new texture format AL44
Radeon GPUs can do this. R600 can even do render-to-texture. Packing and extracting aren't implemented, but we shouldn't hit them (I think). Tested with swrast, softpipe, and r300g.
Diffstat (limited to 'src/mesa/main/texstore.c')
-rw-r--r--src/mesa/main/texstore.c47
1 files changed, 47 insertions, 0 deletions
diff --git a/src/mesa/main/texstore.c b/src/mesa/main/texstore.c
index b14ffe84b6..f9ab946902 100644
--- a/src/mesa/main/texstore.c
+++ b/src/mesa/main/texstore.c
@@ -2113,6 +2113,52 @@ _mesa_texstore_argb2101010(TEXSTORE_PARAMS)
/**
+ * Do texstore for 2-channel, 4-bit/channel, unsigned normalized formats.
+ */
+static GLboolean
+_mesa_texstore_unorm44(TEXSTORE_PARAMS)
+{
+ const GLuint texelBytes = _mesa_get_format_bytes(dstFormat);
+ const GLenum baseFormat = _mesa_get_format_base_format(dstFormat);
+
+ ASSERT(dstFormat == MESA_FORMAT_AL44);
+ ASSERT(texelBytes == 1);
+
+ {
+ /* general path */
+ const GLchan *tempImage = _mesa_make_temp_chan_image(ctx, dims,
+ baseInternalFormat,
+ baseFormat,
+ srcWidth, srcHeight, srcDepth,
+ srcFormat, srcType, srcAddr,
+ srcPacking);
+ const GLchan *src = tempImage;
+ GLint img, row, col;
+ if (!tempImage)
+ return GL_FALSE;
+ for (img = 0; img < srcDepth; img++) {
+ GLubyte *dstRow = (GLubyte *) dstAddr
+ + dstImageOffsets[dstZoffset + img] * texelBytes
+ + dstYoffset * dstRowStride
+ + dstXoffset * texelBytes;
+ for (row = 0; row < srcHeight; row++) {
+ GLubyte *dstUS = (GLubyte *) dstRow;
+ for (col = 0; col < srcWidth; col++) {
+ /* src[0] is luminance, src[1] is alpha */
+ dstUS[col] = PACK_COLOR_44( CHAN_TO_UBYTE(src[1]),
+ CHAN_TO_UBYTE(src[0]) );
+ src += 2;
+ }
+ dstRow += dstRowStride;
+ }
+ }
+ free((void *) tempImage);
+ }
+ return GL_TRUE;
+}
+
+
+/**
* Do texstore for 2-channel, 8-bit/channel, unsigned normalized formats.
*/
static GLboolean
@@ -3995,6 +4041,7 @@ texstore_funcs[MESA_FORMAT_COUNT] =
{ MESA_FORMAT_RGBA5551, _mesa_texstore_rgba5551 },
{ MESA_FORMAT_ARGB1555, _mesa_texstore_argb1555 },
{ MESA_FORMAT_ARGB1555_REV, _mesa_texstore_argb1555 },
+ { MESA_FORMAT_AL44, _mesa_texstore_unorm44 },
{ MESA_FORMAT_AL88, _mesa_texstore_unorm88 },
{ MESA_FORMAT_AL88_REV, _mesa_texstore_unorm88 },
{ MESA_FORMAT_AL1616, _mesa_texstore_unorm1616 },