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
Allows buffers created with love.graphics.newBuffer to only allocate VRAM data. Previously they had a copy of their contents in RAM.
Also makes it easier to implement Buffers in other graphics APIs and to implement more types of Buffers in the future.
The Nvidia Tegra 3 driver for Android (used by Ouya) erroneously claims
to support the desktop-oriented GL_EXT_texture_array extension. On
desktop GPUs using (non ES) OpenGL, the glTexImage3D and similar
functions are always present, and the GL_EXT_texture_array extension
simply adds support for texture arrays to those functions. On OpenGL ES
2.0, those functions do not exist, and GL_OES_texture_3D is required to
define them.
Calling glTexImage3D on the Tegra 3 causes a segfault. This change works
around the issue by manually setting GLAD_EXT_texture_array to 0 on
OpenGL ES 2.0 systems, which causes LÖVE to avoid codepaths that assume
that the 3D texture functions are available. It doesn't make sense for
any OpenGL ES 2.0 GPU to claim support for GL_EXT_texture_array.
Fixes#1647
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).
bjorn
Alex Szpakowski
Miku AuahDark
Jordan Christiansen