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Lower resolution due to lying drivers.

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This commit is contained in:
Joshua Yanovski 2020-08-15 22:28:32 +02:00
parent d3b878de2a
commit acc0986040
1 changed files with 15 additions and 14 deletions
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29
voxygen/src/render/renderer.rs
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@ -472,19 +472,18 @@ impl Renderer {
// size of a diagonal along that axis.
let diag_size = size.map(f64::from).magnitude();
let diag_cross_size = f64::from(min_size) / f64::from(max_size) * diag_size;
let (diag_size, _diag_cross_size) = if 0.0 < diag_size
&& diag_size <= f64::from(max_texture_size)
{
// NOTE: diag_cross_size must be non-negative, since it is the ratio of a
// non-negative and a positive number (if max_size were zero,
// diag_size would be 0 too). And it must be <= diag_size,
// since min_size <= max_size. Therefore, if diag_size fits in a
// u16, so does diag_cross_size.
(diag_size as u16, diag_cross_size as u16)
} else {
// Limit to max texture resolution rather than error.
(max_texture_size as u16, max_texture_size as u16)
};
let (diag_size, _diag_cross_size) =
if 0.0 < diag_size && diag_size <= f64::from(max_texture_size) {
// NOTE: diag_cross_size must be non-negative, since it is the ratio of a
// non-negative and a positive number (if max_size were zero,
// diag_size would be 0 too). And it must be <= diag_size,
// since min_size <= max_size. Therefore, if diag_size fits in a
// u16, so does diag_cross_size.
(diag_size as u16, diag_cross_size as u16)
} else {
// Limit to max texture resolution rather than error.
(max_texture_size as u16, max_texture_size as u16)
};
let diag_two_size = u16::checked_next_power_of_two(diag_size)
.filter(|&e| e <= max_texture_size)
// Limit to max texture resolution rather than error.
@ -817,7 +816,9 @@ impl Renderer {
const MAX_TEXTURE_SIZE_MAX: u16 = 8192;
#[cfg(not(target_os = "macos"))]
/// NOTE: Apparently Macs aren't the only machines that lie.
const MAX_TEXTURE_SIZE_MAX: u16 = 16384;
///
/// TODO: Find a way to let graphics cards that don't lie do better.
const MAX_TEXTURE_SIZE_MAX: u16 = 8192;
// NOTE: Many APIs for textures require coordinates to fit in u16, which is why
// we perform this conversion.
u16::try_from(factory.get_capabilities().max_texture_size)