This adds the following four Mesa image format enums which correspond to the
four BPTC compressed texture formats:
MESA_FORMAT_BPTC_RGBA_UNORM
MESA_FORMAT_BPTC_SRGB_ALPHA_UNORM
MESA_FORMAT_BPTC_RGB_SIGNED_FLOAT
MESA_FORMAT_BPTC_RGB_UNSIGNED_FLOAT
It also updates the format information functions to handle these and the
corresponding GL enums.
---
src/mesa/main/formats.c | 46 ++++++++++++++++++++++++++++++++++++++++++++
src/mesa/main/formats.h | 6 ++++++
src/mesa/main/glformats.c | 10 ++++++++++
src/mesa/main/texcompress.c | 24 +++++++++++++++++++++++
src/mesa/main/texformat.c | 8 ++++++++
src/mesa/main/teximage.c | 14 ++++++++++++++
src/mesa/swrast/s_texfetch.c | 24 +++++++++++++++++++++++
7 files changed, 132 insertions(+)
diff --git a/src/mesa/main/formats.c b/src/mesa/main/formats.c
index 1f20a9a..d72f26c 100644
--- a/src/mesa/main/formats.c
+++ b/src/mesa/main/formats.c
@@ -1804,6 +1804,42 @@ static struct gl_format_info
format_info[MESA_FORMAT_COUNT] =
0, 0, 0, 0, 0,
4, 4, 8 /* 8 bytes per 4x4 block */
},
+ {
+ MESA_FORMAT_BPTC_RGBA_UNORM,
+ "MESA_FORMAT_BPTC_RGBA_UNORM",
+ GL_RGBA,
+ GL_UNSIGNED_NORMALIZED,
+ 4, 4, 4, 4,
+ 0, 0, 0, 0, 0,
+ 4, 4, 16 /* 16 bytes per 4x4 block */
+ },
+ {
+ MESA_FORMAT_BPTC_SRGB_ALPHA_UNORM,
+ "MESA_FORMAT_BPTC_SRGB_ALPHA_UNORM",
+ GL_RGBA,
+ GL_UNSIGNED_NORMALIZED,
+ 4, 4, 4, 4,
+ 0, 0, 0, 0, 0,
+ 4, 4, 16 /* 16 bytes per 4x4 block */
+ },
+ {
+ MESA_FORMAT_BPTC_RGB_SIGNED_FLOAT,
+ "MESA_FORMAT_BPTC_RGB_SIGNED_FLOAT",
+ GL_RGB,
+ GL_FLOAT,
+ 4, 4, 4, 0,
+ 0, 0, 0, 0, 0,
+ 4, 4, 16 /* 16 bytes per 4x4 block */
+ },
+ {
+ MESA_FORMAT_BPTC_RGB_UNSIGNED_FLOAT,
+ "MESA_FORMAT_BPTC_RGB_UNSIGNED_FLOAT",
+ GL_RGB,
+ GL_FLOAT,
+ 4, 4, 4, 0,
+ 0, 0, 0, 0, 0,
+ 4, 4, 16 /* 16 bytes per 4x4 block */
+ }
};
@@ -2660,6 +2696,10 @@ _mesa_format_to_type_and_comps(mesa_format format,
case MESA_FORMAT_ETC2_SIGNED_RG11_EAC:
case MESA_FORMAT_ETC2_RGB8_PUNCHTHROUGH_ALPHA1:
case MESA_FORMAT_ETC2_SRGB8_PUNCHTHROUGH_ALPHA1:
+ case MESA_FORMAT_BPTC_RGBA_UNORM:
+ case MESA_FORMAT_BPTC_SRGB_ALPHA_UNORM:
+ case MESA_FORMAT_BPTC_RGB_SIGNED_FLOAT:
+ case MESA_FORMAT_BPTC_RGB_UNSIGNED_FLOAT:
/* XXX generate error instead? */
*datatype = GL_UNSIGNED_BYTE;
*comps = 0;
@@ -3216,6 +3256,12 @@ _mesa_format_matches_format_and_type(mesa_format
mesa_format,
case MESA_FORMAT_RGBA_DXT5:
return GL_FALSE;
+ case MESA_FORMAT_BPTC_RGBA_UNORM:
+ case MESA_FORMAT_BPTC_SRGB_ALPHA_UNORM:
+ case MESA_FORMAT_BPTC_RGB_SIGNED_FLOAT:
+ case MESA_FORMAT_BPTC_RGB_UNSIGNED_FLOAT:
+ return GL_FALSE;
+
case MESA_FORMAT_RGBA_FLOAT32:
return format == GL_RGBA && type == GL_FLOAT && !swapBytes;
case MESA_FORMAT_RGBA_FLOAT16:
diff --git a/src/mesa/main/formats.h b/src/mesa/main/formats.h
index dc50bc8..0ad8378 100644
--- a/src/mesa/main/formats.h
+++ b/src/mesa/main/formats.h
@@ -403,6 +403,12 @@ typedef enum
MESA_FORMAT_ETC2_RGB8_PUNCHTHROUGH_ALPHA1,
MESA_FORMAT_ETC2_SRGB8_PUNCHTHROUGH_ALPHA1,
+ /* BPTC compressed formats */
+ MESA_FORMAT_BPTC_RGBA_UNORM,
+ MESA_FORMAT_BPTC_SRGB_ALPHA_UNORM,
+ MESA_FORMAT_BPTC_RGB_SIGNED_FLOAT,
+ MESA_FORMAT_BPTC_RGB_UNSIGNED_FLOAT,
+
MESA_FORMAT_COUNT
} mesa_format;
diff --git a/src/mesa/main/glformats.c b/src/mesa/main/glformats.c
index 304d452..7341b80 100644
--- a/src/mesa/main/glformats.c
+++ b/src/mesa/main/glformats.c
@@ -623,6 +623,10 @@ _mesa_is_color_format(GLenum format)
case GL_COMPRESSED_SIGNED_RG11_EAC:
case GL_COMPRESSED_RGB8_PUNCHTHROUGH_ALPHA1_ETC2:
case GL_COMPRESSED_SRGB8_PUNCHTHROUGH_ALPHA1_ETC2:
+ case GL_COMPRESSED_RGBA_BPTC_UNORM:
+ case GL_COMPRESSED_SRGB_ALPHA_BPTC_UNORM:
+ case GL_COMPRESSED_RGB_BPTC_SIGNED_FLOAT:
+ case GL_COMPRESSED_RGB_BPTC_UNSIGNED_FLOAT:
/* generic integer formats */
case GL_RED_INTEGER_EXT:
case GL_GREEN_INTEGER_EXT:
@@ -876,6 +880,12 @@ _mesa_is_compressed_format(struct gl_context *ctx, GLenum
format)
case GL_COMPRESSED_RGB8_PUNCHTHROUGH_ALPHA1_ETC2:
case GL_COMPRESSED_SRGB8_PUNCHTHROUGH_ALPHA1_ETC2:
return _mesa_is_gles3(ctx) || ctx->Extensions.ARB_ES3_compatibility;
+ case GL_COMPRESSED_RGBA_BPTC_UNORM:
+ case GL_COMPRESSED_SRGB_ALPHA_BPTC_UNORM:
+ case GL_COMPRESSED_RGB_BPTC_SIGNED_FLOAT:
+ case GL_COMPRESSED_RGB_BPTC_UNSIGNED_FLOAT:
+ return _mesa_is_desktop_gl(ctx) &&
+ ctx->Extensions.ARB_texture_compression_bptc;
case GL_PALETTE4_RGB8_OES:
case GL_PALETTE4_RGBA8_OES:
case GL_PALETTE4_R5_G6_B5_OES:
diff --git a/src/mesa/main/texcompress.c b/src/mesa/main/texcompress.c
index 9dbfe9f..b708b49 100644
--- a/src/mesa/main/texcompress.c
+++ b/src/mesa/main/texcompress.c
@@ -235,6 +235,12 @@ _mesa_gl_compressed_format_base_format(GLenum format)
* GL_EXT_texture_compression_latc. At the very least, Catalyst 11.6 does not
* expose the 3dc formats through this mechanism.
*
+ * The spec for GL_ARB_texture_compression_bptc doesn't mention whether it
+ * should be included in GL_COMPRESSED_TEXTURE_FORMATS. However as it takes a
+ * very long time to compress the textures in this format it's probably not
+ * very useful as a general format where the GL will have to compress it on
+ * the fly.
+ *
* \param ctx the GL context
* \param formats the resulting format list (may be NULL).
*
@@ -434,6 +440,15 @@ _mesa_glenum_to_compressed_format(GLenum format)
case GL_COMPRESSED_SRGB8_PUNCHTHROUGH_ALPHA1_ETC2:
return MESA_FORMAT_ETC2_SRGB8_PUNCHTHROUGH_ALPHA1;
+ case GL_COMPRESSED_RGBA_BPTC_UNORM:
+ return MESA_FORMAT_BPTC_RGBA_UNORM;
+ case GL_COMPRESSED_SRGB_ALPHA_BPTC_UNORM:
+ return MESA_FORMAT_BPTC_SRGB_ALPHA_UNORM;
+ case GL_COMPRESSED_RGB_BPTC_SIGNED_FLOAT:
+ return MESA_FORMAT_BPTC_RGB_SIGNED_FLOAT;
+ case GL_COMPRESSED_RGB_BPTC_UNSIGNED_FLOAT:
+ return MESA_FORMAT_BPTC_RGB_UNSIGNED_FLOAT;
+
default:
return MESA_FORMAT_NONE;
}
@@ -515,6 +530,15 @@ _mesa_compressed_format_to_glenum(struct gl_context *ctx,
mesa_format mesaFormat
case MESA_FORMAT_ETC2_SRGB8_PUNCHTHROUGH_ALPHA1:
return GL_COMPRESSED_SRGB8_PUNCHTHROUGH_ALPHA1_ETC2;
+ case MESA_FORMAT_BPTC_RGBA_UNORM:
+ return GL_COMPRESSED_RGBA_BPTC_UNORM;
+ case MESA_FORMAT_BPTC_SRGB_ALPHA_UNORM:
+ return GL_COMPRESSED_SRGB_ALPHA_BPTC_UNORM;
+ case MESA_FORMAT_BPTC_RGB_SIGNED_FLOAT:
+ return GL_COMPRESSED_RGB_BPTC_SIGNED_FLOAT;
+ case MESA_FORMAT_BPTC_RGB_UNSIGNED_FLOAT:
+ return GL_COMPRESSED_RGB_BPTC_UNSIGNED_FLOAT;
+
default:
_mesa_problem(ctx, "Unexpected mesa texture format in"
" _mesa_compressed_format_to_glenum()");
diff --git a/src/mesa/main/texformat.c b/src/mesa/main/texformat.c
index c61a748..6d3b805 100644
--- a/src/mesa/main/texformat.c
+++ b/src/mesa/main/texformat.c
@@ -345,6 +345,14 @@ _mesa_choose_tex_format(struct gl_context *ctx, GLenum
target,
return MESA_FORMAT_SRGBA_DXT3;
case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT5_EXT:
return MESA_FORMAT_SRGBA_DXT5;
+ case GL_COMPRESSED_RGBA_BPTC_UNORM:
+ return MESA_FORMAT_BPTC_RGBA_UNORM;
+ case GL_COMPRESSED_SRGB_ALPHA_BPTC_UNORM:
+ return MESA_FORMAT_BPTC_SRGB_ALPHA_UNORM;
+ case GL_COMPRESSED_RGB_BPTC_SIGNED_FLOAT:
+ return MESA_FORMAT_BPTC_RGB_SIGNED_FLOAT;
+ case GL_COMPRESSED_RGB_BPTC_UNSIGNED_FLOAT:
+ return MESA_FORMAT_BPTC_RGB_UNSIGNED_FLOAT;
case GL_ALPHA16F_ARB:
RETURN_IF_SUPPORTED(MESA_FORMAT_A_FLOAT16);
diff --git a/src/mesa/main/teximage.c b/src/mesa/main/teximage.c
index a069594..3b9adb6 100644
--- a/src/mesa/main/teximage.c
+++ b/src/mesa/main/teximage.c
@@ -519,6 +519,20 @@ _mesa_base_tex_format( struct gl_context *ctx, GLint
internalFormat )
}
}
+ if (_mesa_is_desktop_gl(ctx) &&
+ ctx->Extensions.ARB_texture_compression_bptc) {
+ switch (internalFormat) {
+ case GL_COMPRESSED_RGBA_BPTC_UNORM:
+ case GL_COMPRESSED_SRGB_ALPHA_BPTC_UNORM:
+ return GL_RGBA;
+ case GL_COMPRESSED_RGB_BPTC_SIGNED_FLOAT:
+ case GL_COMPRESSED_RGB_BPTC_UNSIGNED_FLOAT:
+ return GL_RGB;
+ default:
+ ; /* fallthrough */
+ }
+ }
+
if (ctx->API == API_OPENGLES) {
switch (internalFormat) {
case GL_PALETTE4_RGB8_OES:
diff --git a/src/mesa/swrast/s_texfetch.c b/src/mesa/swrast/s_texfetch.c
index e508368..ab294f0 100644
--- a/src/mesa/swrast/s_texfetch.c
+++ b/src/mesa/swrast/s_texfetch.c
@@ -540,6 +540,30 @@ texfetch_funcs[] =
fetch_compressed,
fetch_compressed,
fetch_compressed
+ },
+ {
+ MESA_FORMAT_BPTC_RGBA_UNORM,
+ fetch_compressed,
+ fetch_compressed,
+ fetch_compressed
+ },
+ {
+ MESA_FORMAT_BPTC_SRGB_ALPHA_UNORM,
+ fetch_compressed,
+ fetch_compressed,
+ fetch_compressed
+ },
+ {
+ MESA_FORMAT_BPTC_RGB_SIGNED_FLOAT,
+ fetch_compressed,
+ fetch_compressed,
+ fetch_compressed
+ },
+ {
+ MESA_FORMAT_BPTC_RGB_UNSIGNED_FLOAT,
+ fetch_compressed,
+ fetch_compressed,
+ fetch_compressed
}
};
--
1.9.3
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