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gfx: use Mat4x4.projection2D once again

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Helps hexops/mach#1103

Signed-off-by: Stephen Gutekanst <stephen@hexops.com>
This commit is contained in:
Stephen Gutekanst 2024-01-06 13:10:54 -07:00
parent 0d938ef6be
commit fc24a1148a
2 changed files with 24 additions and 24 deletions
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24
src/gfx/Sprite.zig
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@ -303,9 +303,9 @@ pub const local = struct {
var uv_transforms_offset: usize = 0;
var sizes_offset: usize = 0;
while (archetypes_iter.next()) |archetype| {
var transforms = archetype.slice(.mach_gfx_sprite, .transform);
var uv_transforms = archetype.slice(.mach_gfx_sprite, .uv_transform);
var sizes = archetype.slice(.mach_gfx_sprite, .size);
const transforms = archetype.slice(.mach_gfx_sprite, .transform);
const uv_transforms = archetype.slice(.mach_gfx_sprite, .uv_transform);
const sizes = archetype.slice(.mach_gfx_sprite, .size);
// TODO: confirm the lifetime of these slices is OK for writeBuffer, how long do they need
// to live?
@ -333,16 +333,16 @@ pub const local = struct {
const pipeline = sprite_mod.state.pipelines.get(pipeline_id).?;
// Update uniform buffer
const ortho = Mat4x4.ortho(
-@as(f32, @floatFromInt(core.size().width)) / 2,
@as(f32, @floatFromInt(core.size().width)) / 2,
-@as(f32, @floatFromInt(core.size().height)) / 2,
@as(f32, @floatFromInt(core.size().height)) / 2,
-0.1,
100000,
);
const proj = Mat4x4.projection2D(.{
.left = -@as(f32, @floatFromInt(core.size().width)) / 2,
.right = @as(f32, @floatFromInt(core.size().width)) / 2,
.bottom = -@as(f32, @floatFromInt(core.size().height)) / 2,
.top = @as(f32, @floatFromInt(core.size().height)) / 2,
.near = -0.1,
.far = 100000,
});
const uniforms = Uniforms{
.view_projection = ortho,
.view_projection = proj,
// TODO: dimensions of other textures, number of textures present
.texture_size = vec2(
@as(f32, @floatFromInt(pipeline.texture.getWidth())),