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User-selectable texture filters per-texture

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This commit is contained in:
Cosmic Chip Socket 2020-06-28 17:20:29 -04:00
parent c2bb0bd1e2
commit 4ab3aa6642
1 changed files with 23 additions and 2 deletions
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25
imgui-glium-renderer/src/lib.rs
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@ -13,6 +13,7 @@ use glium::{
use imgui::internal::RawWrapper; use imgui::internal::RawWrapper;
use imgui::{DrawCmd, DrawCmdParams, DrawData, ImString, TextureId, Textures}; use imgui::{DrawCmd, DrawCmdParams, DrawData, ImString, TextureId, Textures};
use std::borrow::Cow; use std::borrow::Cow;
use std::collections::HashMap;
use std::error::Error; use std::error::Error;
use std::fmt; use std::fmt;
use std::rc::Rc; use std::rc::Rc;
@ -91,6 +92,7 @@ pub struct Renderer {
program: Program, program: Program,
font_texture: Texture2d, font_texture: Texture2d,
textures: Textures<Rc<Texture2d>>, textures: Textures<Rc<Texture2d>>,
filters: HashMap<TextureId, (MinifySamplerFilter, MagnifySamplerFilter)>,
} }
impl Renderer { impl Renderer {
@ -109,6 +111,7 @@ impl Renderer {
program, program,
font_texture, font_texture,
textures: Textures::new(), textures: Textures::new(),
filters: HashMap::new(),
}) })
} }
pub fn reload_font_texture(&mut self, ctx: &mut imgui::Context) -> Result<(), RendererError> { pub fn reload_font_texture(&mut self, ctx: &mut imgui::Context) -> Result<(), RendererError> {
@ -127,6 +130,14 @@ impl Renderer {
Err(RendererError::BadTexture(texture_id)) Err(RendererError::BadTexture(texture_id))
} }
} }
pub fn set_texture_filter(
&mut self,
texture_id: TextureId,
min_filter: MinifySamplerFilter,
mag_filter: MagnifySamplerFilter,
) {
self.filters.insert(texture_id, (min_filter, mag_filter));
}
pub fn render<T: Surface>( pub fn render<T: Surface>(
&mut self, &mut self,
target: &mut T, target: &mut T,
@ -187,6 +198,16 @@ impl Renderer {
&& clip_rect[2] >= 0.0 && clip_rect[2] >= 0.0
&& clip_rect[3] >= 0.0 && clip_rect[3] >= 0.0
{ {
let (min_filter, mag_filter) = self
.filters
.get(&texture_id)
.cloned()
.or(Some((
MinifySamplerFilter::Linear,
MagnifySamplerFilter::Linear,
)))
.expect("Bad texture filter");
target.draw( target.draw(
&vtx_buffer, &vtx_buffer,
&idx_buffer &idx_buffer
@ -196,8 +217,8 @@ impl Renderer {
&uniform! { &uniform! {
matrix: matrix, matrix: matrix,
tex: self.lookup_texture(texture_id)?.sampled() tex: self.lookup_texture(texture_id)?.sampled()
.minify_filter(MinifySamplerFilter::Linear) .minify_filter(min_filter)
.magnify_filter(MagnifySamplerFilter::Linear) .magnify_filter(mag_filter)
.wrap_function(SamplerWrapFunction::BorderClamp) .wrap_function(SamplerWrapFunction::BorderClamp)
}, },
&DrawParameters { &DrawParameters {