[Mesa-dev] [PATCH 06/12] mesa: implement new texture format A16
Marek Olšák
maraeo at gmail.com
Tue Dec 21 19:00:52 PST 2010
---
src/mesa/main/formats.c | 10 ++++++++++
src/mesa/main/formats.h | 1 +
src/mesa/main/texfetch.c | 7 +++++++
src/mesa/main/texfetch_tmp.h | 24 ++++++++++++++++++++++++
src/mesa/main/texformat.c | 6 ++++--
src/mesa/main/texgetimage.c | 5 +++++
src/mesa/main/texstore.c | 13 +++++++------
7 files changed, 58 insertions(+), 8 deletions(-)
diff --git a/src/mesa/main/formats.c b/src/mesa/main/formats.c
index 90296f4..efbd4a2 100644
--- a/src/mesa/main/formats.c
+++ b/src/mesa/main/formats.c
@@ -285,6 +285,15 @@ static struct gl_format_info format_info[MESA_FORMAT_COUNT] =
1, 1, 1 /* BlockWidth/Height,Bytes */
},
{
+ MESA_FORMAT_A16, /* Name */
+ "MESA_FORMAT_A16", /* StrName */
+ GL_ALPHA, /* BaseFormat */
+ GL_UNSIGNED_NORMALIZED, /* DataType */
+ 0, 0, 0, 16, /* Red/Green/Blue/AlphaBits */
+ 0, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
+ 1, 1, 2 /* BlockWidth/Height,Bytes */
+ },
+ {
MESA_FORMAT_L8, /* Name */
"MESA_FORMAT_L8", /* StrName */
GL_LUMINANCE, /* BaseFormat */
@@ -1297,6 +1306,7 @@ _mesa_format_to_type_and_comps(gl_format format,
return;
case MESA_FORMAT_R16:
+ case MESA_FORMAT_A16:
*datatype = GL_UNSIGNED_SHORT;
*comps = 1;
return;
diff --git a/src/mesa/main/formats.h b/src/mesa/main/formats.h
index db63fde..033d2e1 100644
--- a/src/mesa/main/formats.h
+++ b/src/mesa/main/formats.h
@@ -72,6 +72,7 @@ typedef enum
MESA_FORMAT_AL1616_REV, /* LLLL LLLL LLLL LLLL AAAA AAAA AAAA AAAA */
MESA_FORMAT_RGB332, /* RRRG GGBB */
MESA_FORMAT_A8, /* AAAA AAAA */
+ MESA_FORMAT_A16, /* AAAA AAAA AAAA AAAA */
MESA_FORMAT_L8, /* LLLL LLLL */
MESA_FORMAT_I8, /* IIII IIII */
MESA_FORMAT_CI8, /* CCCC CCCC */
diff --git a/src/mesa/main/texfetch.c b/src/mesa/main/texfetch.c
index 5c7e728..6a650d1 100644
--- a/src/mesa/main/texfetch.c
+++ b/src/mesa/main/texfetch.c
@@ -286,6 +286,13 @@ texfetch_funcs[MESA_FORMAT_COUNT] =
store_texel_a8
},
{
+ MESA_FORMAT_A16,
+ fetch_texel_1d_f_a16,
+ fetch_texel_2d_f_a16,
+ fetch_texel_3d_f_a16,
+ store_texel_a16
+ },
+ {
MESA_FORMAT_L8,
fetch_texel_1d_f_l8,
fetch_texel_2d_f_l8,
diff --git a/src/mesa/main/texfetch_tmp.h b/src/mesa/main/texfetch_tmp.h
index b6ffdd0..3a75cdc 100644
--- a/src/mesa/main/texfetch_tmp.h
+++ b/src/mesa/main/texfetch_tmp.h
@@ -1148,6 +1148,30 @@ static void store_texel_a8(struct gl_texture_image *texImage,
#endif
+/* MESA_FORMAT_A16 ************************************************************/
+
+/* Fetch texel from 1D, 2D or 3D a8 texture, return 4 GLchans */
+static void FETCH(f_a16)( const struct gl_texture_image *texImage,
+ GLint i, GLint j, GLint k, GLfloat *texel )
+{
+ const GLushort *src = TEXEL_ADDR(GLushort, texImage, i, j, k, 1);
+ texel[RCOMP] =
+ texel[GCOMP] =
+ texel[BCOMP] = 0.0F;
+ texel[ACOMP] = USHORT_TO_FLOAT( src[0] );
+}
+
+#if DIM == 3
+static void store_texel_a16(struct gl_texture_image *texImage,
+ GLint i, GLint j, GLint k, const void *texel)
+{
+ const GLushort *rgba = (const GLushort *) texel;
+ GLushort *dst = TEXEL_ADDR(GLushort, texImage, i, j, k, 1);
+ *dst = rgba[ACOMP];
+}
+#endif
+
+
/* MESA_FORMAT_L8 ************************************************************/
/* Fetch texel from 1D, 2D or 3D l8 texture, return 4 GLchans */
diff --git a/src/mesa/main/texformat.c b/src/mesa/main/texformat.c
index fb738fc..e10d2e5 100644
--- a/src/mesa/main/texformat.c
+++ b/src/mesa/main/texformat.c
@@ -102,11 +102,13 @@ _mesa_choose_tex_format( struct gl_context *ctx, GLint internalFormat,
/* Alpha formats */
case GL_ALPHA:
case GL_ALPHA4:
- case GL_ALPHA12:
- case GL_ALPHA16:
case GL_ALPHA8:
return MESA_FORMAT_A8;
+ case GL_ALPHA12:
+ case GL_ALPHA16:
+ return MESA_FORMAT_A16;
+
/* Luminance formats */
case 1:
case GL_LUMINANCE:
diff --git a/src/mesa/main/texgetimage.c b/src/mesa/main/texgetimage.c
index c94f88e..428e410 100644
--- a/src/mesa/main/texgetimage.c
+++ b/src/mesa/main/texgetimage.c
@@ -437,6 +437,11 @@ get_tex_memcpy(struct gl_context *ctx, GLenum format, GLenum type, GLvoid *pixel
type == GL_UNSIGNED_BYTE) {
memCopy = GL_TRUE;
}
+ else if (texImage->TexFormat == MESA_FORMAT_A16 &&
+ format == GL_ALPHA &&
+ type == GL_UNSIGNED_SHORT) {
+ memCopy = GL_TRUE;
+ }
}
if (memCopy) {
diff --git a/src/mesa/main/texstore.c b/src/mesa/main/texstore.c
index f9ab946..d6af4c5 100644
--- a/src/mesa/main/texstore.c
+++ b/src/mesa/main/texstore.c
@@ -2357,21 +2357,21 @@ _mesa_texstore_unorm1616(TEXSTORE_PARAMS)
}
+/* Texstore for R16, A16. */
static GLboolean
-_mesa_texstore_r16(TEXSTORE_PARAMS)
+_mesa_texstore_unorm16(TEXSTORE_PARAMS)
{
const GLboolean littleEndian = _mesa_little_endian();
const GLuint texelBytes = _mesa_get_format_bytes(dstFormat);
const GLenum baseFormat = _mesa_get_format_base_format(dstFormat);
- ASSERT(dstFormat == MESA_FORMAT_R16);
+ ASSERT(dstFormat == MESA_FORMAT_R16 ||
+ dstFormat == MESA_FORMAT_A16 ||);
ASSERT(texelBytes == 2);
if (!ctx->_ImageTransferState &&
!srcPacking->SwapBytes &&
- dstFormat == MESA_FORMAT_R16 &&
- baseInternalFormat == GL_RED &&
- srcFormat == GL_RED &&
+ baseInternalFormat == srcFormat &&
srcType == GL_UNSIGNED_SHORT &&
littleEndian) {
/* simple memcpy path */
@@ -4048,6 +4048,7 @@ texstore_funcs[MESA_FORMAT_COUNT] =
{ MESA_FORMAT_AL1616_REV, _mesa_texstore_unorm1616 },
{ MESA_FORMAT_RGB332, _mesa_texstore_rgb332 },
{ MESA_FORMAT_A8, _mesa_texstore_a8 },
+ { MESA_FORMAT_A16, _mesa_texstore_unorm16 },
{ MESA_FORMAT_L8, _mesa_texstore_a8 },
{ MESA_FORMAT_I8, _mesa_texstore_a8 },
{ MESA_FORMAT_CI8, _mesa_texstore_ci8 },
@@ -4056,7 +4057,7 @@ texstore_funcs[MESA_FORMAT_COUNT] =
{ MESA_FORMAT_R8, _mesa_texstore_a8 },
{ MESA_FORMAT_RG88, _mesa_texstore_unorm88 },
{ MESA_FORMAT_RG88_REV, _mesa_texstore_unorm88 },
- { MESA_FORMAT_R16, _mesa_texstore_r16 },
+ { MESA_FORMAT_R16, _mesa_texstore_unorm16 },
{ MESA_FORMAT_RG1616, _mesa_texstore_unorm1616 },
{ MESA_FORMAT_RG1616_REV, _mesa_texstore_unorm1616 },
{ MESA_FORMAT_ARGB2101010, _mesa_texstore_argb2101010 },
--
1.7.1
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