Tilman Sauerbeck [2012-02-12 11:31]:
Marek Olšák [2012-01-23 13:32]:
For ARB_color_buffer_float. Most hardware can't do it and st/mesa is
the perfect place for a fallback.
This breaks lighting in Heroes of Newerth on my rv730:
http://files.code-monkey.de/frag_color_clamp_bad.png (after
Hi Tilman,
Thanks for the info. I didn't consider outputs to be readable, sorry.
A quick fix would be to move the outputs to temps. There is a GLSL pass
for that and it can be enabled by reporting
PIPE_SHADER_CAP_OUTPUT_READ -- 0 in r600_pipe.c. Can you try that and
see if it helps?
To Vadim:
Draw module (aaline, aapoint, and pstipple stages) will also be broken with
PIPE_SHADER_CAP_OUTPUT_READ=1.
llvmpipe too, has analysis which rely on outputs not being read.
Nothing of the above matters to r600, of course.
Nevertheless, I can't help thinking that PIPE_SHADER_CAP_OUTPUT_READ is a
Marek Olšák [2012-01-23 13:32]:
For ARB_color_buffer_float. Most hardware can't do it and st/mesa is
the perfect place for a fallback.
This breaks lighting in Heroes of Newerth on my rv730:
http://files.code-monkey.de/frag_color_clamp_bad.png (after patch)
For ARB_color_buffer_float. Most hardware can't do it and st/mesa is
the perfect place for a fallback.
The exceptions are:
- r500 (vertex clamp only)
- nv50 (both)
- nvc0 (both)
- softpipe (both)
We also have to take into account that r300 can do CLAMPED vertex colors only,
while r600 can do
On Mon, Jan 23, 2012 at 7:32 AM, Marek Olšák mar...@gmail.com wrote:
For ARB_color_buffer_float. Most hardware can't do it and st/mesa is
the perfect place for a fallback.
The exceptions are:
- r500 (vertex clamp only)
- nv50 (both)
- nvc0 (both)
- softpipe (both)
We also have to take
