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74 lines
1.9 KiB
GLSL
74 lines
1.9 KiB
GLSL
#ifdef GL_ES
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precision highp float;
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#endif
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// Declare inputs and outputs
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// varTexcoord : TexCoord for the fragment computed by the rasterizer based on
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// the varTexcoord values output in the vertex shader.
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// gl_FragColor : Implicitly declare in fragments shaders less than 1.40.
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// Output color of our fragment.
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// fragColor : Output color of our fragment. Basically the same as gl_FragColor,
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// but we must explicitly declared this in shaders version 1.40 and
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// above.
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#if __VERSION__ >= 140
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in vec2 varTexcoord;
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out vec4 fragColor;
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#else
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varying vec2 varTexcoord;
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#endif
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// global alpha value
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uniform float aValue;
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// texture switch
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uniform int tex2Use;
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// Framebuffer
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uniform sampler2D framebufferTexture;
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// Floating message
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uniform sampler2D messageTexture;
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// Joystick axis
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uniform sampler2D axisTexture;
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// Joystick buttons
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uniform sampler2D buttonTexture;
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// Keyboard
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uniform sampler2D kbdTexture;
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// HUD Sprouting Menus
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uniform sampler2D topMenuTexture;
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#if __VERSION__ >= 140
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#define OUTPUT_TEXTURE(TEX) \
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vec4 tex = texture(TEX, varTexcoord.st, 0.0); \
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fragColor = vec4(tex.r, tex.g, tex.b, tex.a*aValue)
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#define OUTPUT_RED() \
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fragColor = vec4(1.0, 0.0, 0.0, 1.0)
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#else
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#define OUTPUT_TEXTURE(TEX) vec4 tex = texture2D(TEX, varTexcoord.st, 0.0); gl_FragColor = vec4(tex.r, tex.g, tex.b, tex.a*aValue)
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#define OUTPUT_RED() gl_FragColor = vec4(1.0, 0.0, 0.0, 1.0)
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#endif
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void main(void)
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{
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if (tex2Use == 0) {
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OUTPUT_TEXTURE(framebufferTexture);
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} else if (tex2Use == 1) {
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OUTPUT_TEXTURE(messageTexture);
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} else if (tex2Use == 2) {
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OUTPUT_TEXTURE(axisTexture);
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} else if (tex2Use == 3) {
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OUTPUT_TEXTURE(buttonTexture);
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} else if (tex2Use == 4) {
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OUTPUT_TEXTURE(kbdTexture);
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} else if (tex2Use == 5) {
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OUTPUT_TEXTURE(topMenuTexture);
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} else {
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//OUTPUT_RED(); -- WTF is this failing?
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}
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}
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