ddidderr
c548e63bd1
Ports the terminal-independent half of ZIG/src/renderer (OpenGL only): - opengl/*: buffers, frames, pipelines, render passes, samplers, targets, textures and the OpenGL GraphicsAPI backend on top of glow; the GTK GLArea glue is replaced by a get_proc_address loader closure - the GLSL shaders, copied verbatim and embedded; uniform/vertex structs as bytemuck Pod types with std140 offsets asserted in tests - shadertoy custom shaders converted with naga (GLSL in -> validate -> GLSL 430 out) instead of glslang + spirv-cross - size (screen/grid/cell/padding math), cursor style logic, backend health, options and message types The crate opts into unsafe_code = "deny"; unsafe glow calls live only in opengl/gl.rs. A headless EGL integration test builds every pipeline and the converted shadertoy shaders on Mesa and reads back rendered pixels. Note: Zig's shadertoy Uniforms order the selection background/foreground colors opposite to the GLSL block (likely an upstream bug); kept as in Zig for parity and recorded in the notes. Deferred to the next renderer pass: generic, cell, image, link, row, State, Thread, Overlay (need terminal render state). Test Plan: - cargo test -p ghostty-renderer (33 tests incl. tests/egl_headless.rs)
53 lines
1.6 KiB
GLSL
53 lines
1.6 KiB
GLSL
#version 430 core
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layout(binding = 1, std140) uniform Globals {
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uniform vec3 iResolution;
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uniform float iTime;
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uniform float iTimeDelta;
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uniform float iFrameRate;
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uniform int iFrame;
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uniform float iChannelTime[4];
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uniform vec3 iChannelResolution[4];
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uniform vec4 iMouse;
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uniform vec4 iDate;
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uniform float iSampleRate;
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uniform vec4 iCurrentCursor;
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uniform vec4 iPreviousCursor;
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uniform vec4 iCurrentCursorColor;
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uniform vec4 iPreviousCursorColor;
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uniform int iCurrentCursorStyle;
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uniform int iPreviousCursorStyle;
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uniform int iCursorVisible;
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uniform float iTimeCursorChange;
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uniform float iTimeFocus;
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uniform int iFocus;
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uniform vec3 iPalette[256];
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uniform vec3 iBackgroundColor;
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uniform vec3 iForegroundColor;
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uniform vec3 iCursorColor;
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uniform vec3 iCursorText;
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uniform vec3 iSelectionForegroundColor;
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uniform vec3 iSelectionBackgroundColor;
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};
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#define CURSORSTYLE_BLOCK 0
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#define CURSORSTYLE_BLOCK_HOLLOW 1
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#define CURSORSTYLE_BAR 2
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#define CURSORSTYLE_UNDERLINE 3
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#define CURSORSTYLE_LOCK 4
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layout(binding = 0) uniform sampler2D iChannel0;
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// These are unused currently by Ghostty:
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// layout(binding = 1) uniform sampler2D iChannel1;
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// layout(binding = 2) uniform sampler2D iChannel2;
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// layout(binding = 3) uniform sampler2D iChannel3;
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layout(location = 0) in vec4 gl_FragCoord;
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layout(location = 0) out vec4 _fragColor;
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#define texture2D texture
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void mainImage( out vec4 fragColor, in vec2 fragCoord );
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void main() { mainImage (_fragColor, gl_FragCoord.xy); }
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