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This happens on NVidia GPUs, using more textures than the maximum allowed
by the gl will NOT trigger a linking issue (maybe because of bindless
texture implementation?).
So in this case we manually count the number of samplers per shader stage
and compare it against the GL limit. We discard the shader if the sampler
count is too high. This shows the user something is wrong with the shader.
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Fix T56789: There was issue with certain driver with glGenerateMipmap and
GPU_DEPTH_COMPONENT24.
In this case we just create a complete texture with mipmaps manually
without downsampling / initializing the data.
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Differential Revision: https://developer.blender.org/D3688
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Flat shaded grids are now rendered as a long triangle strip with
degenerate triangles.
Smooth shaded grids are not changed.
Also add back fast navigate. The only difference with 2.79 is that fast
navigate + flat shading will show slitly "incorrect" smooth face. But that's too
much effort to fix for what it is.
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Was done more like a hack on top of old drawing pipeline.
Should be re-implemented to fit new draw manager closer.
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It was not respecting the clamp to edge texture param because we use
texelFetch directly in this case.
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Didn't realize the index buffer is stored once in a BVH
and same pointer is reused. Surprisingly, simple files
were fixed with the previous fix.
Now disabled the optimization all together, and it was
simpler to just completely remove all residue of the
code. It is likely to be a different implementation
anyway, so no need to try to keep code in a semi-broken
state.
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Nodes can have different number of grids, so can not so simply
re-use index buffer across nodes. For now allow re-using buffer
if number of grids matches.
The issue is, number of grids is probably almost never matches,
so in order to have this optimization working need more tricks.
Maybe we can "instance" index buffers?
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Differential Revision: https://developer.blender.org/D3680
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Could overlap icons.
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Testing GLEW_ARB_texture_gather is not sufficient in this case. We need to
test if GL_ARB_texture_gather is defined in the shader, which is always true
on some NVIDIA drivers who does not support it...
So trying to make everything work.
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* Remove support for diffuse color in the pbvh buffers.
* Upload raw data to GPU.
* Only draw nodes that have mask data when drawing the overlay.
This should fix T56466
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It is was not really a bottleneck but it was triggering my OCD when 1/3rd
of the drawcalls in a normal scene were basically only caused by this.
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This make the workbench draw everything in the background routine just like
eevee. This is because the workbench uses floating point buffers too and
rendering background to this buffer makes it incorrect without proper
color management.
This could be improved because in xray the background is not blended but
dithered as it's drawn after the main pass.
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This supports meshes and hairs too. Matches cycles output.
This adds barycentric coords to the GPUBuiltin enum which will also be used
for the wireframe node.
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keeping GPU_SHADER_SMOKE until other occurences are removed.
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Broken since: a3c9f4de7041993ace15078e9943dc2e2c7c1fff
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Note to myself, next time, better check the fix before pushing it.
GL_ARB_texture_gather is defined if there is support for the extension
not only when the extension is enabled. Do this check ourself with
GPU_ARB_texture_gather define.
Original fix 822de6e9e1b8
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A lot of code in codegen was used by previous GLSL system.
Now most of it is not used due to all the things being written from scratch
in 2.8 and we can clean most of it.
As a side not this make the system a bit less flexible (no support for
cubemaps, preview image, etc...) but can be extended again.
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* Remove GPU_link_changed which is unused.
* Remove all GPU link function that are not used anymore.
* GPU_uniform_buffer is now GPU_uniform.
* GPU_texture_ramp is now GPU_color_band.
* GPU_uniform is now GPU_constant.
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The extension GL_ARB_texture_gather is reported to be supported and does
not trigger an error when enabled but the textureGater functions are not
defined.
Workaround is to disable the use of this extension on such systems.
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Color ramp with constant interpolation must bypass texture filtering and
use nearest neighboor sampling in order to appear correctly sharp.
This patch use a GLSL hack to use nearest sampling on thoses particular
color band.
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This lower the use of texture samplers slots and let users use more real
textures in their shaders.
This patch also make the ramp texture 16 bit floating point. Meaning you
can now use value greater than one in your color ramps.
With the limit of 128 colorband per shader (a color band being either a
color ramp, a wavelength node or a curve node (and maybe wavelength node in
the future)).
Only drawback with the current implementation is that it does not remove
colorband from pruned GPUNodes but it shouldn't really matter in practice.
This should fix T56010
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This is a rough (but fast) approximation that still match cycles reference
in common case.
In practice, it's just adding more of the diffuse light computed for the
diffuse contribution.
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This is more like a static optimisation when some parameters are set to 1.0
or 0.0. In theses case we use a more optimized version of the node.
This also revisit the transmission parameter behaviour to make it closer to
cycles.
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This was likely caused by some sort of race condition where the drawing
thread would request the state of the shader before the shader has been
compiled.
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The remaining ones are from the attributes linear/srgb switches and from
nodes that should be pruned before running their _gpu function.
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This means tweaking parameter is now interactive and does not need to
recompile the shaders.
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