scary quads and nice sprites

This commit is contained in:
Alessandro Mauri 2025-06-07 12:42:57 +02:00
parent e3d87525d4
commit 6e65700f38
6 changed files with 218 additions and 64 deletions

View file

@ -1,18 +0,0 @@
#version 330 core
// viewsize.x = viewport width in pixels; viewsize.y = viewport height in pixels
uniform ivec2 viewsize;
uniform ivec2 texturesize;
// texture uv coordinate in texture space
in vec2 uv;
uniform sampler2DRect ts;
const vec3 textcolor = vec3(1.0, 1.0, 1.0);
void main()
{
//gl_FragColor = vec4(1.0f,0.0f,0.0f,1.0f);
gl_FragColor = vec4(textcolor, texture(ts, uv));
}

View file

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#version 330 core
// viewsize.x = viewport width in pixels; viewsize.y = viewport height in pixels
uniform ivec2 viewsize;
uniform ivec2 texturesize;
// both position and and uv are in pixels, they where converted to floats when
// passed to the shader
layout(location = 0) in vec2 position;
layout(location = 1) in vec2 txcoord;
out vec2 uv;
void main()
{
vec2 v = vec2(float(viewsize.x), float(viewsize.y));
// vec2 p = vec2(position.x*2.0f/v.x - 1.0f, position.y*2.0f/v.y - 1.0f);
vec2 p = vec2(position.x*2.0/v.x - 1.0, 1.0 - position.y*2.0/v.y);
vec4 pos = vec4(p.x, p.y, 0.0f, 1.0f);
gl_Position = pos;
// since the texture is a GL_TEXTURE_RECTANGLE the coordintes do not need to
// be normalized
uv = vec2(txcoord.x, txcoord.y);
}

View file

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#version 450
layout(location = 0) in vec2 uv;
layout(location = 0) out vec4 fragColor;
layout(set = 2, binding = 0) uniform sampler2D tx;
void main()
{
ivec2 ts = textureSize(tx, 0);
vec2 fts = vec2(float(ts.x), float(ts.y));
vec2 real_uv = uv / fts;
fragColor = texture(tx, real_uv);
}

View file

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#version 450
layout(set = 1, binding = 0) uniform Viewport {
ivec2 view;
ivec2 not_needed;
};
layout(location = 0) in ivec2 position;
layout(location = 1) in ivec2 in_uv;
layout(location = 2) in ivec4 color;
layout(location = 0) out vec2 out_uv;
void main()
{
vec2 pos;
pos.x = float(position.x)*2.0 / view.x - 1.0;
pos.y = -(float(position.y)*2.0 / view.y - 1.0);
gl_Position = vec4(pos, 0.0, 1.0);
out_uv = vec2(float(in_uv.x), float(in_uv.y));
}