- All shaders are expected to output clip space values that are effectively y-up, with [-1, 1] z, in NDC.
- The transform to a backend's expected clip space values from the above range now happens after user vertex shader code is run, instead of inside a projection matrix.
- Projection matrices no longer need to be flipped when rendering to a canvas versus the main screen.
This means custom projection matrices might need to be altered to account for the more consistent range.
The only field currently read from the table is 'defines', which can contain either an array of define names, or name-value pairs.
For example: newShader(file, {defines={"MYFEATURE_ENABLED", MYSETTING=1}})
Fixes#1577
If a shader uses gl_PointSize then it can only be used when drawing points. If a shader doesn't use gl_PointSize then it can't be used when drawing points.
Added 'ConstantPointSize' and 'CurrentDPIScale' built-in shader uniforms.
ConstantPointSize is in DPI-scaled points, whereas gl_PointSize is in pixels, so to get the correct default behaviour a shader needs to do gl_PointSize = ConstantPointSize * CurrentDPIScale
GLSL 3+ shaders can read from texel buffers by declaring a uniform samplerBuffer variable and calling texelFetch with a 0-based index, in the shader code. All attributes in a texel buffer's format array must have the same data format (e.g. all 'floatvec4' formats).
Shader:send accepts a texel Buffer for samplerBuffer uniforms.
Added 'texelbuffer' to love.graphics.getSupported (requires GLSL 3+ and desktop OpenGL).
Added 'texelbuffersize' to love.graphics.getSystemLimits. Returns the max number of values in a texel buffer (array length multiplied by the number of attributes declared in the buffer's format array).
Also changed the optional 'columnMajor' argument of the matrix variant of Shader:send and Transform:setMatrix to accept enum constants instead. Valid values are "row" and "column".
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branch : minor
- Add Texture:setDepthSampleMode(comparemode). Only works on textures with depth pixel formats. A texture with the depth sample mode set will only work with a depth sampler.
- Add DepthImage, DepthArrayImage, and DepthCubeImage sampler keywords to glsl3.
--HG--
branch : minor
- Add love.graphics.clear(r, g, b, a [, stencilvalue, depthvalue]).
- Add love.graphics.clear(color1, color2, …, [, stencilvalue, depthvalue]).
- Add love.graphics.clear(false, stencilvalue, depthvalue).
stencilvalue and depthvalue are either true, false, or a number. True is the default behaviour and clears that buffer to the default value (0 for stencil, 1 for depth), false prevents clearing.
The third variant listed above only clears the depth and/or stencil buffers and not the color buffer.
--HG--
branch : minor
Also fixed Canvas MSAA (resolves issue #1271).
stencil-formatted Canvases can’t be drawn, and can only be used as the value for a new ‘depthstencil’ field to the table-argument variant of love.graphics.setCanvas.
--HG--
branch : minor
Sasha Szpakowski
bjorn
Bart van Strien