diff options
Diffstat (limited to 'src/mesa/main/texcompress.c')
| -rw-r--r-- | src/mesa/main/texcompress.c | 85 |
1 files changed, 63 insertions, 22 deletions
diff --git a/src/mesa/main/texcompress.c b/src/mesa/main/texcompress.c index 7fcaa424583..a8ac19e40d7 100644 --- a/src/mesa/main/texcompress.c +++ b/src/mesa/main/texcompress.c @@ -243,28 +243,6 @@ _mesa_gl_compressed_format_base_format(GLenum format) * what GL_NUM_COMPRESSED_TEXTURE_FORMATS and * GL_COMPRESSED_TEXTURE_FORMATS return." * - * The KHR_texture_compression_astc_hdr spec says: - * - * "Interactions with OpenGL 4.2 - * - * OpenGL 4.2 supports the feature that compressed textures can be - * compressed online, by passing the compressed texture format enum as - * the internal format when uploading a texture using TexImage1D, - * TexImage2D or TexImage3D (see Section 3.9.3, Texture Image - * Specification, subsection Encoding of Special Internal Formats). - * - * Due to the complexity of the ASTC compression algorithm, it is not - * usually suitable for online use, and therefore ASTC support will be - * limited to pre-compressed textures only. Where on-device compression - * is required, a domain-specific limited compressor will typically - * be used, and this is therefore not suitable for implementation in - * the driver. - * - * In particular, the ASTC format specifiers will not be added to - * Table 3.14, and thus will not be accepted by the TexImage*D - * functions, and will not be returned by the (already deprecated) - * COMPRESSED_TEXTURE_FORMATS query." - * * There is no formal spec for GL_ATI_texture_compression_3dc. Since the * formats added by this extension are luminance-alpha formats, it is * reasonable to expect them to follow the same rules as @@ -397,6 +375,69 @@ _mesa_get_compressed_formats(struct gl_context *ctx, GLint *formats) n += 10; } } + + /* The KHR_texture_compression_astc_hdr spec says: + * + * "Interactions with OpenGL 4.2 + * + * OpenGL 4.2 supports the feature that compressed textures can be + * compressed online, by passing the compressed texture format enum as + * the internal format when uploading a texture using TexImage1D, + * TexImage2D or TexImage3D (see Section 3.9.3, Texture Image + * Specification, subsection Encoding of Special Internal Formats). + * + * Due to the complexity of the ASTC compression algorithm, it is not + * usually suitable for online use, and therefore ASTC support will be + * limited to pre-compressed textures only. Where on-device compression + * is required, a domain-specific limited compressor will typically + * be used, and this is therefore not suitable for implementation in + * the driver. + * + * In particular, the ASTC format specifiers will not be added to + * Table 3.14, and thus will not be accepted by the TexImage*D + * functions, and will not be returned by the (already deprecated) + * COMPRESSED_TEXTURE_FORMATS query." + * + * The ES and the desktop specs diverge here. In OpenGL ES, the COMPRESSED_TEXTURE_FORMATS + * query returns the set of supported specific compressed formats. + */ + if (ctx->API == API_OPENGLES2 && + ctx->Extensions.KHR_texture_compression_astc_ldr) { + if (formats) { + formats[n++] = GL_COMPRESSED_RGBA_ASTC_4x4_KHR; + formats[n++] = GL_COMPRESSED_RGBA_ASTC_5x4_KHR; + formats[n++] = GL_COMPRESSED_RGBA_ASTC_5x5_KHR; + formats[n++] = GL_COMPRESSED_RGBA_ASTC_6x5_KHR; + formats[n++] = GL_COMPRESSED_RGBA_ASTC_6x6_KHR; + formats[n++] = GL_COMPRESSED_RGBA_ASTC_8x5_KHR; + formats[n++] = GL_COMPRESSED_RGBA_ASTC_8x6_KHR; + formats[n++] = GL_COMPRESSED_RGBA_ASTC_8x8_KHR; + formats[n++] = GL_COMPRESSED_RGBA_ASTC_10x5_KHR; + formats[n++] = GL_COMPRESSED_RGBA_ASTC_10x6_KHR; + formats[n++] = GL_COMPRESSED_RGBA_ASTC_10x8_KHR; + formats[n++] = GL_COMPRESSED_RGBA_ASTC_10x10_KHR; + formats[n++] = GL_COMPRESSED_RGBA_ASTC_12x10_KHR; + formats[n++] = GL_COMPRESSED_RGBA_ASTC_12x12_KHR; + formats[n++] = GL_COMPRESSED_SRGB8_ALPHA8_ASTC_4x4_KHR; + formats[n++] = GL_COMPRESSED_SRGB8_ALPHA8_ASTC_5x4_KHR; + formats[n++] = GL_COMPRESSED_SRGB8_ALPHA8_ASTC_5x5_KHR; + formats[n++] = GL_COMPRESSED_SRGB8_ALPHA8_ASTC_6x5_KHR; + formats[n++] = GL_COMPRESSED_SRGB8_ALPHA8_ASTC_6x6_KHR; + formats[n++] = GL_COMPRESSED_SRGB8_ALPHA8_ASTC_8x5_KHR; + formats[n++] = GL_COMPRESSED_SRGB8_ALPHA8_ASTC_8x6_KHR; + formats[n++] = GL_COMPRESSED_SRGB8_ALPHA8_ASTC_8x8_KHR; + formats[n++] = GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x5_KHR; + formats[n++] = GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x6_KHR; + formats[n++] = GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x8_KHR; + formats[n++] = GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x10_KHR; + formats[n++] = GL_COMPRESSED_SRGB8_ALPHA8_ASTC_12x10_KHR; + formats[n++] = GL_COMPRESSED_SRGB8_ALPHA8_ASTC_12x12_KHR; + } + else { + n += 28; + } + } + return n; } |