49 lines
1.2 KiB
GLSL
49 lines
1.2 KiB
GLSL
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#version 320 es
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precision highp float;
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// 全局 UBO (binding = 0) - 每帧更新一次
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layout(std140, binding = 0) uniform GlobalUBO {
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mat4 uViewProjection;
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vec4 uCameraPosition;
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float uTime;
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float uDeltaTime;
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vec2 uScreenSize;
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};
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// 材质 UBO (binding = 1) - 每物体更新
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layout(std140, binding = 1) uniform MaterialUBO {
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vec4 uColor;
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vec4 uTintColor;
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float uOpacity;
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float uPadding[3]; // std140 对齐填充
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};
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// 模型矩阵作为单独的统一变量（每个物体设置）
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uniform mat4 uModelMatrix;
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// 顶点属性
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layout(location = 0) in vec2 aPosition;
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layout(location = 1) in vec2 aTexCoord;
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layout(location = 2) in vec4 aColor;
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// 输出到片段着色器
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out vec2 vTexCoord;
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out vec4 vColor;
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out vec4 vTintColor;
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out float vOpacity;
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/**
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* @brief 顶点着色器入口
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*
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* 计算顶点在裁剪空间中的位置，
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* 并传递纹理坐标和颜色到片段着色器
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*/
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void main() {
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gl_Position = uViewProjection * uModelMatrix * vec4(aPosition, 0.0, 1.0);
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vTexCoord = aTexCoord;
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// 混合顶点颜色和材质 UBO 中的颜色
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vColor = aColor * uColor;
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vTintColor = uTintColor;
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vOpacity = uOpacity;
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}
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