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authorBrian Paul <brianp@vmware.com>2009-10-24 08:43:16 -0600
committerBrian Paul <brianp@vmware.com>2009-10-24 08:43:16 -0600
commitbee6794eb126bc8af87726a2456d0ebc36eb721d (patch)
tree7dfec0f9b00e1ade74ba96da73e319cfe5f8cfc3 /src/mesa/main/formats.c
parenteb732b1bbb4e4bdd018ee9a1653a62fd8dce2d55 (diff)
mesa: added _mesa_get_format_name()
Diffstat (limited to 'src/mesa/main/formats.c')
-rw-r--r--src/mesa/main/formats.c75
1 files changed, 75 insertions, 0 deletions
diff --git a/src/mesa/main/formats.c b/src/mesa/main/formats.c
index d6a1ec81b6..773a8f70b3 100644
--- a/src/mesa/main/formats.c
+++ b/src/mesa/main/formats.c
@@ -37,6 +37,9 @@ struct gl_format_info
{
gl_format Name;
+ /** text name for debugging */
+ const char *StrName;
+
/**
* Base format is one of GL_RGB, GL_RGBA, GL_ALPHA, GL_LUMINANCE,
* GL_LUMINANCE_ALPHA, GL_INTENSITY, GL_YCBCR_MESA, GL_COLOR_INDEX,
@@ -77,6 +80,7 @@ static struct gl_format_info format_info[MESA_FORMAT_COUNT] =
{
{
MESA_FORMAT_NONE, /* Name */
+ "MESA_FORMAT_NONE", /* StrName */
GL_NONE, /* BaseFormat */
GL_NONE, /* DataType */
0, 0, 0, 0, /* Red/Green/Blue/AlphaBits */
@@ -85,6 +89,7 @@ static struct gl_format_info format_info[MESA_FORMAT_COUNT] =
},
{
MESA_FORMAT_RGBA8888, /* Name */
+ "MESA_FORMAT_RGBA8888", /* StrName */
GL_RGBA, /* BaseFormat */
GL_UNSIGNED_NORMALIZED, /* DataType */
8, 8, 8, 8, /* Red/Green/Blue/AlphaBits */
@@ -93,6 +98,7 @@ static struct gl_format_info format_info[MESA_FORMAT_COUNT] =
},
{
MESA_FORMAT_RGBA8888_REV, /* Name */
+ "MESA_FORMAT_RGBA8888_REV", /* StrName */
GL_RGBA, /* BaseFormat */
GL_UNSIGNED_NORMALIZED, /* DataType */
8, 8, 8, 8, /* Red/Green/Blue/AlphaBits */
@@ -101,6 +107,7 @@ static struct gl_format_info format_info[MESA_FORMAT_COUNT] =
},
{
MESA_FORMAT_ARGB8888, /* Name */
+ "MESA_FORMAT_ARGB8888", /* StrName */
GL_RGBA, /* BaseFormat */
GL_UNSIGNED_NORMALIZED, /* DataType */
8, 8, 8, 8, /* Red/Green/Blue/AlphaBits */
@@ -109,6 +116,7 @@ static struct gl_format_info format_info[MESA_FORMAT_COUNT] =
},
{
MESA_FORMAT_ARGB8888_REV, /* Name */
+ "MESA_FORMAT_ARGB8888_REV", /* StrName */
GL_RGBA, /* BaseFormat */
GL_UNSIGNED_NORMALIZED, /* DataType */
8, 8, 8, 8, /* Red/Green/Blue/AlphaBits */
@@ -117,6 +125,7 @@ static struct gl_format_info format_info[MESA_FORMAT_COUNT] =
},
{
MESA_FORMAT_XRGB8888, /* Name */
+ "MESA_FORMAT_XRGB8888", /* StrName */
GL_RGB, /* BaseFormat */
GL_UNSIGNED_NORMALIZED, /* DataType */
8, 8, 8, 0, /* Red/Green/Blue/AlphaBits */
@@ -125,6 +134,7 @@ static struct gl_format_info format_info[MESA_FORMAT_COUNT] =
},
{
MESA_FORMAT_RGB888, /* Name */
+ "MESA_FORMAT_RGB888", /* StrName */
GL_RGB, /* BaseFormat */
GL_UNSIGNED_NORMALIZED, /* DataType */
8, 8, 8, 0, /* Red/Green/Blue/AlphaBits */
@@ -133,6 +143,7 @@ static struct gl_format_info format_info[MESA_FORMAT_COUNT] =
},
{
MESA_FORMAT_BGR888, /* Name */
+ "MESA_FORMAT_BGR888", /* StrName */
GL_RGB, /* BaseFormat */
GL_UNSIGNED_NORMALIZED, /* DataType */
8, 8, 8, 0, /* Red/Green/Blue/AlphaBits */
@@ -141,6 +152,7 @@ static struct gl_format_info format_info[MESA_FORMAT_COUNT] =
},
{
MESA_FORMAT_RGB565, /* Name */
+ "MESA_FORMAT_RGB565", /* StrName */
GL_RGB, /* BaseFormat */
GL_UNSIGNED_NORMALIZED, /* DataType */
5, 6, 5, 0, /* Red/Green/Blue/AlphaBits */
@@ -149,6 +161,7 @@ static struct gl_format_info format_info[MESA_FORMAT_COUNT] =
},
{
MESA_FORMAT_RGB565_REV, /* Name */
+ "MESA_FORMAT_RGB565_REV", /* StrName */
GL_RGB, /* BaseFormat */
GL_UNSIGNED_NORMALIZED, /* DataType */
5, 6, 5, 0, /* Red/Green/Blue/AlphaBits */
@@ -157,6 +170,7 @@ static struct gl_format_info format_info[MESA_FORMAT_COUNT] =
},
{
MESA_FORMAT_ARGB4444, /* Name */
+ "MESA_FORMAT_ARGB4444", /* StrName */
GL_RGBA, /* BaseFormat */
GL_UNSIGNED_NORMALIZED, /* DataType */
4, 4, 4, 4, /* Red/Green/Blue/AlphaBits */
@@ -165,6 +179,7 @@ static struct gl_format_info format_info[MESA_FORMAT_COUNT] =
},
{
MESA_FORMAT_ARGB4444_REV, /* Name */
+ "MESA_FORMAT_ARGB4444_REV", /* StrName */
GL_RGBA, /* BaseFormat */
GL_UNSIGNED_NORMALIZED, /* DataType */
4, 4, 4, 4, /* Red/Green/Blue/AlphaBits */
@@ -173,6 +188,7 @@ static struct gl_format_info format_info[MESA_FORMAT_COUNT] =
},
{
MESA_FORMAT_RGBA5551, /* Name */
+ "MESA_FORMAT_RGBA5551", /* StrName */
GL_RGBA, /* BaseFormat */
GL_UNSIGNED_NORMALIZED, /* DataType */
5, 5, 5, 1, /* Red/Green/Blue/AlphaBits */
@@ -181,6 +197,7 @@ static struct gl_format_info format_info[MESA_FORMAT_COUNT] =
},
{
MESA_FORMAT_ARGB1555, /* Name */
+ "MESA_FORMAT_ARGB1555", /* StrName */
GL_RGBA, /* BaseFormat */
GL_UNSIGNED_NORMALIZED, /* DataType */
5, 5, 5, 1, /* Red/Green/Blue/AlphaBits */
@@ -189,6 +206,7 @@ static struct gl_format_info format_info[MESA_FORMAT_COUNT] =
},
{
MESA_FORMAT_ARGB1555_REV, /* Name */
+ "MESA_FORMAT_ARGB1555_REV", /* StrName */
GL_RGBA, /* BaseFormat */
GL_UNSIGNED_NORMALIZED, /* DataType */
5, 5, 5, 1, /* Red/Green/Blue/AlphaBits */
@@ -197,6 +215,7 @@ static struct gl_format_info format_info[MESA_FORMAT_COUNT] =
},
{
MESA_FORMAT_AL88, /* Name */
+ "MESA_FORMAT_AL88", /* StrName */
GL_LUMINANCE_ALPHA, /* BaseFormat */
GL_UNSIGNED_NORMALIZED, /* DataType */
0, 0, 0, 8, /* Red/Green/Blue/AlphaBits */
@@ -205,6 +224,7 @@ static struct gl_format_info format_info[MESA_FORMAT_COUNT] =
},
{
MESA_FORMAT_AL88_REV, /* Name */
+ "MESA_FORMAT_AL88_REV", /* StrName */
GL_LUMINANCE_ALPHA, /* BaseFormat */
GL_UNSIGNED_NORMALIZED, /* DataType */
0, 0, 0, 8, /* Red/Green/Blue/AlphaBits */
@@ -213,6 +233,7 @@ static struct gl_format_info format_info[MESA_FORMAT_COUNT] =
},
{
MESA_FORMAT_RGB332, /* Name */
+ "MESA_FORMAT_RGB332", /* StrName */
GL_RGB, /* BaseFormat */
GL_UNSIGNED_NORMALIZED, /* DataType */
3, 3, 2, 0, /* Red/Green/Blue/AlphaBits */
@@ -221,6 +242,7 @@ static struct gl_format_info format_info[MESA_FORMAT_COUNT] =
},
{
MESA_FORMAT_A8, /* Name */
+ "MESA_FORMAT_A8", /* StrName */
GL_ALPHA, /* BaseFormat */
GL_UNSIGNED_NORMALIZED, /* DataType */
0, 0, 0, 8, /* Red/Green/Blue/AlphaBits */
@@ -229,6 +251,7 @@ static struct gl_format_info format_info[MESA_FORMAT_COUNT] =
},
{
MESA_FORMAT_L8, /* Name */
+ "MESA_FORMAT_L8", /* StrName */
GL_LUMINANCE, /* BaseFormat */
GL_UNSIGNED_NORMALIZED, /* DataType */
0, 0, 0, 0, /* Red/Green/Blue/AlphaBits */
@@ -237,6 +260,7 @@ static struct gl_format_info format_info[MESA_FORMAT_COUNT] =
},
{
MESA_FORMAT_I8, /* Name */
+ "MESA_FORMAT_I8", /* StrName */
GL_INTENSITY, /* BaseFormat */
GL_UNSIGNED_NORMALIZED, /* DataType */
0, 0, 0, 0, /* Red/Green/Blue/AlphaBits */
@@ -245,6 +269,7 @@ static struct gl_format_info format_info[MESA_FORMAT_COUNT] =
},
{
MESA_FORMAT_CI8, /* Name */
+ "MESA_FORMAT_CI8", /* StrName */
GL_COLOR_INDEX, /* BaseFormat */
GL_UNSIGNED_INT, /* DataType */
0, 0, 0, 0, /* Red/Green/Blue/AlphaBits */
@@ -253,6 +278,7 @@ static struct gl_format_info format_info[MESA_FORMAT_COUNT] =
},
{
MESA_FORMAT_YCBCR, /* Name */
+ "MESA_FORMAT_YCBCR", /* StrName */
GL_YCBCR_MESA, /* BaseFormat */
GL_UNSIGNED_NORMALIZED, /* DataType */
0, 0, 0, 0, /* Red/Green/Blue/AlphaBits */
@@ -261,6 +287,7 @@ static struct gl_format_info format_info[MESA_FORMAT_COUNT] =
},
{
MESA_FORMAT_YCBCR_REV, /* Name */
+ "MESA_FORMAT_YCBCR_REV", /* StrName */
GL_YCBCR_MESA, /* BaseFormat */
GL_UNSIGNED_NORMALIZED, /* DataType */
0, 0, 0, 0, /* Red/Green/Blue/AlphaBits */
@@ -269,6 +296,7 @@ static struct gl_format_info format_info[MESA_FORMAT_COUNT] =
},
{
MESA_FORMAT_Z24_S8, /* Name */
+ "MESA_FORMAT_Z24_S8", /* StrName */
GL_DEPTH_STENCIL, /* BaseFormat */
GL_UNSIGNED_INT, /* DataType */
0, 0, 0, 0, /* Red/Green/Blue/AlphaBits */
@@ -277,6 +305,7 @@ static struct gl_format_info format_info[MESA_FORMAT_COUNT] =
},
{
MESA_FORMAT_S8_Z24, /* Name */
+ "MESA_FORMAT_S8_Z24", /* StrName */
GL_DEPTH_STENCIL, /* BaseFormat */
GL_UNSIGNED_INT, /* DataType */
0, 0, 0, 0, /* Red/Green/Blue/AlphaBits */
@@ -285,6 +314,7 @@ static struct gl_format_info format_info[MESA_FORMAT_COUNT] =
},
{
MESA_FORMAT_Z16, /* Name */
+ "MESA_FORMAT_Z16", /* StrName */
GL_DEPTH_COMPONENT, /* BaseFormat */
GL_UNSIGNED_INT, /* DataType */
0, 0, 0, 0, /* Red/Green/Blue/AlphaBits */
@@ -293,6 +323,7 @@ static struct gl_format_info format_info[MESA_FORMAT_COUNT] =
},
{
MESA_FORMAT_X8_Z24, /* Name */
+ "MESA_FORMAT_X8_Z24", /* StrName */
GL_DEPTH_COMPONENT, /* BaseFormat */
GL_UNSIGNED_INT, /* DataType */
0, 0, 0, 0, /* Red/Green/Blue/AlphaBits */
@@ -301,6 +332,7 @@ static struct gl_format_info format_info[MESA_FORMAT_COUNT] =
},
{
MESA_FORMAT_Z32, /* Name */
+ "MESA_FORMAT_Z32", /* StrName */
GL_DEPTH_COMPONENT, /* BaseFormat */
GL_UNSIGNED_INT, /* DataType */
0, 0, 0, 0, /* Red/Green/Blue/AlphaBits */
@@ -309,6 +341,7 @@ static struct gl_format_info format_info[MESA_FORMAT_COUNT] =
},
{
MESA_FORMAT_S8, /* Name */
+ "MESA_FORMAT_S8", /* StrName */
GL_STENCIL_INDEX, /* BaseFormat */
GL_UNSIGNED_INT, /* DataType */
0, 0, 0, 0, /* Red/Green/Blue/AlphaBits */
@@ -317,6 +350,7 @@ static struct gl_format_info format_info[MESA_FORMAT_COUNT] =
},
{
MESA_FORMAT_SRGB8,
+ "MESA_FORMAT_SRGB8",
GL_RGB,
GL_UNSIGNED_NORMALIZED,
8, 8, 8, 0,
@@ -325,6 +359,7 @@ static struct gl_format_info format_info[MESA_FORMAT_COUNT] =
},
{
MESA_FORMAT_SRGBA8,
+ "MESA_FORMAT_SRGBA8",
GL_RGBA,
GL_UNSIGNED_NORMALIZED,
8, 8, 8, 8,
@@ -333,6 +368,7 @@ static struct gl_format_info format_info[MESA_FORMAT_COUNT] =
},
{
MESA_FORMAT_SARGB8,
+ "MESA_FORMAT_SARGB8",
GL_RGBA,
GL_UNSIGNED_NORMALIZED,
8, 8, 8, 8,
@@ -341,6 +377,7 @@ static struct gl_format_info format_info[MESA_FORMAT_COUNT] =
},
{
MESA_FORMAT_SL8,
+ "MESA_FORMAT_SL8",
GL_LUMINANCE_ALPHA,
GL_UNSIGNED_NORMALIZED,
0, 0, 0, 8,
@@ -349,6 +386,7 @@ static struct gl_format_info format_info[MESA_FORMAT_COUNT] =
},
{
MESA_FORMAT_SLA8,
+ "MESA_FORMAT_SLA8",
GL_LUMINANCE_ALPHA,
GL_UNSIGNED_NORMALIZED,
0, 0, 0, 8,
@@ -357,6 +395,7 @@ static struct gl_format_info format_info[MESA_FORMAT_COUNT] =
},
{
MESA_FORMAT_SRGB_DXT1, /* Name */
+ "MESA_FORMAT_SRGB_DXT1", /* StrName */
GL_RGB, /* BaseFormat */
GL_UNSIGNED_NORMALIZED, /* DataType */
4, 4, 4, 0, /* approx Red/Green/Blue/AlphaBits */
@@ -365,6 +404,7 @@ static struct gl_format_info format_info[MESA_FORMAT_COUNT] =
},
{
MESA_FORMAT_SRGBA_DXT1,
+ "MESA_FORMAT_SRGBA_DXT1",
GL_RGBA,
GL_UNSIGNED_NORMALIZED,
4, 4, 4, 4,
@@ -373,6 +413,7 @@ static struct gl_format_info format_info[MESA_FORMAT_COUNT] =
},
{
MESA_FORMAT_SRGBA_DXT3,
+ "MESA_FORMAT_SRGBA_DXT3",
GL_RGBA,
GL_UNSIGNED_NORMALIZED,
4, 4, 4, 4,
@@ -381,6 +422,7 @@ static struct gl_format_info format_info[MESA_FORMAT_COUNT] =
},
{
MESA_FORMAT_SRGBA_DXT5,
+ "MESA_FORMAT_SRGBA_DXT5",
GL_RGBA,
GL_UNSIGNED_NORMALIZED,
4, 4, 4, 4,
@@ -390,6 +432,7 @@ static struct gl_format_info format_info[MESA_FORMAT_COUNT] =
{
MESA_FORMAT_RGB_FXT1,
+ "MESA_FORMAT_RGB_FXT1",
GL_RGB,
GL_UNSIGNED_NORMALIZED,
8, 8, 8, 0,
@@ -398,6 +441,7 @@ static struct gl_format_info format_info[MESA_FORMAT_COUNT] =
},
{
MESA_FORMAT_RGBA_FXT1,
+ "MESA_FORMAT_RGBA_FXT1",
GL_RGBA,
GL_UNSIGNED_NORMALIZED,
8, 8, 8, 8,
@@ -407,6 +451,7 @@ static struct gl_format_info format_info[MESA_FORMAT_COUNT] =
{
MESA_FORMAT_RGB_DXT1, /* Name */
+ "MESA_FORMAT_RGB_DXT1", /* StrName */
GL_RGB, /* BaseFormat */
GL_UNSIGNED_NORMALIZED, /* DataType */
4, 4, 4, 0, /* approx Red/Green/Blue/AlphaBits */
@@ -415,6 +460,7 @@ static struct gl_format_info format_info[MESA_FORMAT_COUNT] =
},
{
MESA_FORMAT_RGBA_DXT1,
+ "MESA_FORMAT_RGBA_DXT1",
GL_RGBA,
GL_UNSIGNED_NORMALIZED,
4, 4, 4, 4,
@@ -423,6 +469,7 @@ static struct gl_format_info format_info[MESA_FORMAT_COUNT] =
},
{
MESA_FORMAT_RGBA_DXT3,
+ "MESA_FORMAT_RGBA_DXT3",
GL_RGBA,
GL_UNSIGNED_NORMALIZED,
4, 4, 4, 4,
@@ -431,6 +478,7 @@ static struct gl_format_info format_info[MESA_FORMAT_COUNT] =
},
{
MESA_FORMAT_RGBA_DXT5,
+ "MESA_FORMAT_RGBA_DXT5",
GL_RGBA,
GL_UNSIGNED_NORMALIZED,
4, 4, 4, 4,
@@ -439,6 +487,7 @@ static struct gl_format_info format_info[MESA_FORMAT_COUNT] =
},
{
MESA_FORMAT_RGBA_FLOAT32,
+ "MESA_FORMAT_RGBA_FLOAT32",
GL_RGBA,
GL_FLOAT,
32, 32, 32, 32,
@@ -447,6 +496,7 @@ static struct gl_format_info format_info[MESA_FORMAT_COUNT] =
},
{
MESA_FORMAT_RGBA_FLOAT16,
+ "MESA_FORMAT_RGBA_FLOAT16",
GL_RGBA,
GL_FLOAT,
16, 16, 16, 16,
@@ -455,6 +505,7 @@ static struct gl_format_info format_info[MESA_FORMAT_COUNT] =
},
{
MESA_FORMAT_RGB_FLOAT32,
+ "MESA_FORMAT_RGB_FLOAT32",
GL_RGB,
GL_FLOAT,
32, 32, 32, 0,
@@ -463,6 +514,7 @@ static struct gl_format_info format_info[MESA_FORMAT_COUNT] =
},
{
MESA_FORMAT_RGB_FLOAT16,
+ "MESA_FORMAT_RGB_FLOAT16",
GL_RGB,
GL_FLOAT,
16, 16, 16, 0,
@@ -471,6 +523,7 @@ static struct gl_format_info format_info[MESA_FORMAT_COUNT] =
},
{
MESA_FORMAT_ALPHA_FLOAT32,
+ "MESA_FORMAT_ALPHA_FLOAT32",
GL_ALPHA,
GL_FLOAT,
0, 0, 0, 32,
@@ -479,6 +532,7 @@ static struct gl_format_info format_info[MESA_FORMAT_COUNT] =
},
{
MESA_FORMAT_ALPHA_FLOAT16,
+ "MESA_FORMAT_ALPHA_FLOAT16",
GL_ALPHA,
GL_FLOAT,
0, 0, 0, 16,
@@ -487,6 +541,7 @@ static struct gl_format_info format_info[MESA_FORMAT_COUNT] =
},
{
MESA_FORMAT_LUMINANCE_FLOAT32,
+ "MESA_FORMAT_LUMINANCE_FLOAT32",
GL_ALPHA,
GL_FLOAT,
0, 0, 0, 0,
@@ -495,6 +550,7 @@ static struct gl_format_info format_info[MESA_FORMAT_COUNT] =
},
{
MESA_FORMAT_LUMINANCE_FLOAT16,
+ "MESA_FORMAT_LUMINANCE_FLOAT16",
GL_ALPHA,
GL_FLOAT,
0, 0, 0, 0,
@@ -503,6 +559,7 @@ static struct gl_format_info format_info[MESA_FORMAT_COUNT] =
},
{
MESA_FORMAT_LUMINANCE_ALPHA_FLOAT32,
+ "MESA_FORMAT_LUMINANCE_ALPHA_FLOAT32",
GL_LUMINANCE_ALPHA,
GL_FLOAT,
0, 0, 0, 32,
@@ -511,6 +568,7 @@ static struct gl_format_info format_info[MESA_FORMAT_COUNT] =
},
{
MESA_FORMAT_LUMINANCE_ALPHA_FLOAT16,
+ "MESA_FORMAT_LUMINANCE_ALPHA_FLOAT16",
GL_LUMINANCE_ALPHA,
GL_FLOAT,
0, 0, 0, 16,
@@ -519,6 +577,7 @@ static struct gl_format_info format_info[MESA_FORMAT_COUNT] =
},
{
MESA_FORMAT_INTENSITY_FLOAT32,
+ "MESA_FORMAT_INTENSITY_FLOAT32",
GL_INTENSITY,
GL_FLOAT,
0, 0, 0, 0,
@@ -527,6 +586,7 @@ static struct gl_format_info format_info[MESA_FORMAT_COUNT] =
},
{
MESA_FORMAT_INTENSITY_FLOAT16,
+ "MESA_FORMAT_INTENSITY_FLOAT16",
GL_INTENSITY,
GL_FLOAT,
0, 0, 0, 0,
@@ -535,6 +595,7 @@ static struct gl_format_info format_info[MESA_FORMAT_COUNT] =
},
{
MESA_FORMAT_DUDV8,
+ "MESA_FORMAT_DUDV8",
GL_DUDV_ATI,
GL_SIGNED_NORMALIZED,
0, 0, 0, 0,
@@ -543,6 +604,7 @@ static struct gl_format_info format_info[MESA_FORMAT_COUNT] =
},
{
MESA_FORMAT_SIGNED_RGBA8888,
+ "MESA_FORMAT_SIGNED_RGBA8888",
GL_RGBA,
GL_SIGNED_NORMALIZED,
8, 8, 8, 8,
@@ -551,6 +613,7 @@ static struct gl_format_info format_info[MESA_FORMAT_COUNT] =
},
{
MESA_FORMAT_SIGNED_RGBA8888_REV,
+ "MESA_FORMAT_SIGNED_RGBA8888_REV",
GL_RGBA,
GL_SIGNED_NORMALIZED,
8, 8, 8, 8,
@@ -559,6 +622,7 @@ static struct gl_format_info format_info[MESA_FORMAT_COUNT] =
},
{
MESA_FORMAT_SIGNED_RGBA_16,
+ "MESA_FORMAT_SIGNED_RGBA_16",
GL_RGBA,
GL_SIGNED_NORMALIZED,
16, 16, 16, 16,
@@ -578,6 +642,17 @@ _mesa_get_format_info(gl_format format)
}
+/** Return string name of format (for debugging) */
+const char *
+_mesa_get_format_name(gl_format format)
+{
+ const struct gl_format_info *info = _mesa_get_format_info(format);
+ ASSERT(info->BytesPerBlock);
+ return info->StrName;
+}
+
+
+
/**
* Return bytes needed to store a block of pixels in the given format.
* Normally, a block is 1x1 (a single pixel). But for compressed formats