[Mesa-dev] [PATCH v4 1/1] intel: add support for ANGLE_texture_compression_dxt.
Kenneth Graunke
kenneth at whitecape.org
Fri Sep 28 01:12:55 PDT 2012
On 09/27/2012 01:56 AM, Oliver McFadden wrote:
> Signed-off-by: Oliver McFadden <oliver.mcfadden at linux.intel.com>
> ---
> v4: Off-by-one on a couple of 'if (ctx->Mesa_DXTn)' lines, which could cause a
> crash.
>
> src/glx/glxextensions.h | 3 ++-
> src/mapi/glapi/gen/es_EXT.xml | 6 ++++++
> src/mesa/drivers/dri/intel/intel_extensions.c | 1 +
> src/mesa/main/APIspec.xml | 3 +++
> src/mesa/main/extensions.c | 3 +++
> src/mesa/main/glformats.c | 6 ++++--
> src/mesa/main/glheader.h | 11 +++++++++++
> src/mesa/main/mtypes.h | 1 +
> src/mesa/main/texformat.c | 9 ++++++---
> src/mesa/main/teximage.c | 10 ++++++++++
> 10 files changed, 47 insertions(+), 6 deletions(-)
>
> diff --git a/src/glx/glxextensions.h b/src/glx/glxextensions.h
> index 90c27a7..9e072e4 100644
> --- a/src/glx/glxextensions.h
> +++ b/src/glx/glxextensions.h
> @@ -67,7 +67,8 @@ enum
>
> enum
> {
> - GL_ARB_depth_texture_bit = 0,
> + GL_ANGLE_texture_compression_dxt_bit = 0,
> + GL_ARB_depth_texture_bit,
> GL_ARB_draw_buffers_bit,
> GL_ARB_fragment_program_bit,
> GL_ARB_fragment_program_shadow_bit,
You shouldn't need to change GLX code to add a purely client-side
extension. I believe you can safely drop this hunk (and please do).
> diff --git a/src/mapi/glapi/gen/es_EXT.xml b/src/mapi/glapi/gen/es_EXT.xml
> index fc2ec62..2698110 100644
> --- a/src/mapi/glapi/gen/es_EXT.xml
> +++ b/src/mapi/glapi/gen/es_EXT.xml
> @@ -731,4 +731,10 @@
> <enum name="RG8_EXT" value="0x822B"/>
> </category>
>
> +<!-- 111. GL_ANGLE_texture_compression_dxt -->
> +<category name="ANGLE_texture_compression_dxt" number="111">
> + <enum name="COMPRESSED_RGBA_S3TC_DXT3_ANGLE" value="0x83F2"/>
> + <enum name="COMPRESSED_RGBA_S3TC_DXT5_ANGLE" value="0x83F3"/>
> +</category>
> +
> </OpenGLAPI>
> diff --git a/src/mesa/drivers/dri/intel/intel_extensions.c b/src/mesa/drivers/dri/intel/intel_extensions.c
> index 89f6c1e..8a46488 100755
> --- a/src/mesa/drivers/dri/intel/intel_extensions.c
> +++ b/src/mesa/drivers/dri/intel/intel_extensions.c
> @@ -182,6 +182,7 @@ intelInitExtensions(struct gl_context *ctx)
> }
>
> if (intel->ctx.Mesa_DXTn) {
> + ctx->Extensions.ANGLE_texture_compression_dxt = true;
> ctx->Extensions.EXT_texture_compression_s3tc = true;
> ctx->Extensions.S3_s3tc = true;
> }
> diff --git a/src/mesa/main/APIspec.xml b/src/mesa/main/APIspec.xml
> index a65c5c5..c396952 100644
> --- a/src/mesa/main/APIspec.xml
> +++ b/src/mesa/main/APIspec.xml
> @@ -2172,6 +2172,9 @@
> <category name="NV_draw_buffers"/>
> <category name="NV_read_buffer"/>
>
> + <!-- GL_ANGLE_texture_compression_dxt -->
> + <category name="ANGLE_texture_compression_dxt"/>
> +
> <function name="DrawBuffersNV" template="DrawBuffers"/>
> <function name="ReadBufferNV" template="ReadBuffer"/>
>
> diff --git a/src/mesa/main/extensions.c b/src/mesa/main/extensions.c
> index bd7c7ba..4971ebc 100644
> --- a/src/mesa/main/extensions.c
> +++ b/src/mesa/main/extensions.c
> @@ -195,6 +195,8 @@ static const struct extension extension_table[] = {
> { "GL_EXT_texture3D", o(EXT_texture3D), GLL, 1996 },
> { "GL_EXT_texture_array", o(EXT_texture_array), GL, 2006 },
> { "GL_EXT_texture_compression_dxt1", o(EXT_texture_compression_s3tc), GL | ES1 | ES2, 2004 },
> + { "GL_ANGLE_texture_compression_dxt3", o(ANGLE_texture_compression_dxt), ES2, 2011 },
> + { "GL_ANGLE_texture_compression_dxt5", o(ANGLE_texture_compression_dxt), ES2, 2011 },
> { "GL_EXT_texture_compression_latc", o(EXT_texture_compression_latc), GL, 2006 },
> { "GL_EXT_texture_compression_rgtc", o(ARB_texture_compression_rgtc), GL, 2004 },
> { "GL_EXT_texture_compression_s3tc", o(EXT_texture_compression_s3tc), GL, 2000 },
> @@ -480,6 +482,7 @@ _mesa_enable_sw_extensions(struct gl_context *ctx)
> ctx->Extensions.EXT_gpu_program_parameters = GL_TRUE;
> _mesa_enable_extension(ctx, "GL_3DFX_texture_compression_FXT1");
> if (ctx->Mesa_DXTn) {
> + ctx->Extensions.ANGLE_texture_compression_dxt = GL_TRUE;
> _mesa_enable_extension(ctx, "GL_EXT_texture_compression_s3tc");
> _mesa_enable_extension(ctx, "GL_S3_s3tc");
> }
> diff --git a/src/mesa/main/glformats.c b/src/mesa/main/glformats.c
> index 04029c0..ccdf56b 100644
> --- a/src/mesa/main/glformats.c
> +++ b/src/mesa/main/glformats.c
> @@ -791,8 +791,10 @@ _mesa_is_compressed_format(struct gl_context *ctx, GLenum format)
> return ctx->Extensions.EXT_texture_compression_s3tc;
> case GL_COMPRESSED_RGBA_S3TC_DXT3_EXT:
> case GL_COMPRESSED_RGBA_S3TC_DXT5_EXT:
> - return _mesa_is_desktop_gl(ctx)
> - && ctx->Extensions.EXT_texture_compression_s3tc;
> + return (_mesa_is_desktop_gl(ctx) &&
> + ctx->Extensions.EXT_texture_compression_s3tc) ||
> + (ctx->API == API_OPENGLES2 &&
> + ctx->Extensions.ANGLE_texture_compression_dxt);
> case GL_RGB_S3TC:
> case GL_RGB4_S3TC:
> case GL_RGBA_S3TC:
> diff --git a/src/mesa/main/glheader.h b/src/mesa/main/glheader.h
> index e93ca30..33cda02 100644
> --- a/src/mesa/main/glheader.h
> +++ b/src/mesa/main/glheader.h
> @@ -59,6 +59,17 @@ extern "C" {
> #endif
>
>
> +/* GL_ANGLE_texture_compression_dxt3 */
> +#ifndef GL_ANGLE_texture_compression_dxt3
> +#define GL_COMPRESSED_RGBA_S3TC_DXT3_ANGLE 0x83F2
> +#endif
> +
> +/* GL_ANGLE_texture_compression_dxt5 */
> +#ifndef GL_ANGLE_texture_compression_dxt5
> +#define GL_COMPRESSED_RGBA_S3TC_DXT5_ANGLE 0x83F3
> +#endif
You can actually drop this hunk if you change the teximage.c code to use
the _EXT extension instead of the _ANGLE extension. The enums are
identical (just as the formats are identical). I'd prefer that.
Otherwise, this looks good! With those changes,
Reviewed-by: Kenneth Graunke <kenneth at whitecape.org>
> /**
> * GL_FIXED is defined in glext.h version 64 but these typedefs aren't (yet).
> */
> diff --git a/src/mesa/main/mtypes.h b/src/mesa/main/mtypes.h
> index ba43e57..e790e18 100644
> --- a/src/mesa/main/mtypes.h
> +++ b/src/mesa/main/mtypes.h
> @@ -2946,6 +2946,7 @@ struct gl_extensions
> GLboolean dummy; /* don't remove this! */
> GLboolean dummy_true; /* Set true by _mesa_init_extensions(). */
> GLboolean dummy_false; /* Set false by _mesa_init_extensions(). */
> + GLboolean ANGLE_texture_compression_dxt;
> GLboolean ARB_ES2_compatibility;
> GLboolean ARB_base_instance;
> GLboolean ARB_blend_func_extended;
> diff --git a/src/mesa/main/texformat.c b/src/mesa/main/texformat.c
> index 17270ba..cc3687e 100644
> --- a/src/mesa/main/texformat.c
> +++ b/src/mesa/main/texformat.c
> @@ -302,7 +302,8 @@ _mesa_choose_tex_format(struct gl_context *ctx, GLenum target,
> }
> }
>
> - if (ctx->Extensions.EXT_texture_compression_s3tc) {
> + if (ctx->Extensions.EXT_texture_compression_s3tc ||
> + ctx->Extensions.ANGLE_texture_compression_dxt) {
> switch (internalFormat) {
> case GL_COMPRESSED_RGB_S3TC_DXT1_EXT:
> RETURN_IF_SUPPORTED(MESA_FORMAT_RGB_DXT1);
> @@ -604,12 +605,14 @@ _mesa_choose_tex_format(struct gl_context *ctx, GLenum target,
> RETURN_IF_SUPPORTED(MESA_FORMAT_SARGB8);
> break;
> case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT3_EXT:
> - if (ctx->Extensions.EXT_texture_compression_s3tc)
> + if (ctx->Extensions.EXT_texture_compression_s3tc ||
> + ctx->Extensions.ANGLE_texture_compression_dxt)
> RETURN_IF_SUPPORTED(MESA_FORMAT_SRGBA_DXT3);
> RETURN_IF_SUPPORTED(MESA_FORMAT_SARGB8);
> break;
> case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT5_EXT:
> - if (ctx->Extensions.EXT_texture_compression_s3tc)
> + if (ctx->Extensions.EXT_texture_compression_s3tc ||
> + ctx->Extensions.ANGLE_texture_compression_dxt)
> RETURN_IF_SUPPORTED(MESA_FORMAT_SRGBA_DXT5);
> RETURN_IF_SUPPORTED(MESA_FORMAT_SARGB8);
> break;
> diff --git a/src/mesa/main/teximage.c b/src/mesa/main/teximage.c
> index afda0ea..d297936 100644
> --- a/src/mesa/main/teximage.c
> +++ b/src/mesa/main/teximage.c
> @@ -203,6 +203,16 @@ _mesa_base_tex_format( struct gl_context *ctx, GLint internalFormat )
> }
> }
>
> + if (ctx->Extensions.ANGLE_texture_compression_dxt) {
> + switch (internalFormat) {
> + case GL_COMPRESSED_RGBA_S3TC_DXT3_ANGLE:
> + case GL_COMPRESSED_RGBA_S3TC_DXT5_ANGLE:
> + return GL_RGBA;
> + default:
> + ; /* fallthrough */
> + }
> + }
> +
> if (ctx->Extensions.S3_s3tc) {
> switch (internalFormat) {
> case GL_RGB_S3TC:
>
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