Re: no GL_ARB_texture_float

On 04/17/2013 12:35 PM, burlen wrote:
> Thannks! That solved it, at least partially. now texture float is
> available.

OK, I've posted the patch for review.


> I'm having some follow up issues.
>
> I'm render to the texture with a vertex and fragment shader. however
> textures are clear, nothing got stored in them. Unfortunately the
> extensions loaded and no errors are reported. The code's been
> validated on all manner of hardware and platforms, so perhaps there's
> more to it? perhaps it's an unrelated issue with GLSL?
>
> Are there any known issues with GLSL and OS Mesa that would explain?

Sounds like you should file a bug for this.  Please provide a test 
program if possible.

-Brian



>
> On 04/17/2013 10:23 AM, Brian Paul wrote:
>> On 04/17/2013 11:09 AM, burlen wrote:
>>> Hi,
>>>
>>> I've built mesa 9.1.1 with --enable-texture-float, and see all of the
>>> related warnings about consulting my lawyer during the configure,
>>> however the extensions string does not list the extension
>>> GL_ARB_texture_float. I'm using OS Mesa, should this work?
>>
>> Can you try this patch?
>>
>>
>> diff --git a/src/mesa/main/extensions.c b/src/mesa/main/extensions.c
>> index 9c2fcab..64473b9 100644
>> --- a/src/mesa/main/extensions.c
>> +++ b/src/mesa/main/extensions.c
>> @@ -397,7 +397,9 @@ _mesa_enable_sw_extensions(struct gl_context *ctx)
>> ctx->Extensions.ARB_texture_env_combine = GL_TRUE;
>> ctx->Extensions.ARB_texture_env_crossbar = GL_TRUE;
>> ctx->Extensions.ARB_texture_env_dot3 = GL_TRUE;
>> - /*ctx->Extensions.ARB_texture_float = GL_TRUE;*/
>> +#ifdef TEXTURE_FLOAT_ENABLED
>> + ctx->Extensions.ARB_texture_float = GL_TRUE;
>> +#endif
>> ctx->Extensions.ARB_texture_non_power_of_two = GL_TRUE;
>> ctx->Extensions.ARB_texture_rg = GL_TRUE;
>> ctx->Extensions.ARB_texture_compression_rgtc = GL_TRUE;
>>
>>
>> -Brian
>