59 lines
1.8 KiB
C++
59 lines
1.8 KiB
C++
// Copyright (c) 2023 Dominic Masters
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//
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// This software is released under the MIT License.
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// https://opensource.org/licenses/MIT
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#include "SimpleBillboardedShader.hpp"
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using namespace Dawn;
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void SimpleBillboardedShaderProgram::compile() {
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#if DAWN_OPENGL_GLSL
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this->compileShader(
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{
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{ "aPos", 0 },
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{ "aTexCoord", 1 }
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},
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// Vertex Shader
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"#version 330 core\n"
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"layout (location = 0) in vec3 aPos;\n"
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"layout (location = 1) in vec2 aTexCoord;\n"
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"uniform mat4 u_Proj;\n"
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"uniform mat4 u_View;\n"
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"uniform mat4 u_Model;\n"
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"out vec2 o_TextCoord;\n"
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"void main() {\n"
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"vec3 camRight = vec3(view[0][0], view[1][0], view[2][0]);\n"
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"vec3 camUp = vec3(view[0][1], view[1][1], view[2][1]);\n"
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"vec3 billboardPos = view[3].xyz + position.x * camRight + position.y * camUp;\n"
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"gl_Position = u_Proj * u_View * u_Model * vec4(billboardPos, 1.0);\n"
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"o_TextCoord = vec2(aTexCoord.x, aTexCoord.y);\n"
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"}",
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// Fragment Shader
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"#version 330 core\n"
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"in vec2 o_TextCoord;\n"
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"out vec4 o_Color;\n"
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"uniform vec4 u_Color;\n"
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"uniform bool u_HasTexture;\n"
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"uniform sampler2D u_Text;\n"
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"void main() {\n"
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"if(u_HasTexture) {\n"
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"o_Color = texture(u_Text, o_TextCoord) * u_Color;\n"
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"} else {\n"
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"o_Color = u_Color;"
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"}\n"
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"}\n"
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);
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#endif
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this->paramProjection = this->getParameterByName("u_Proj");
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this->paramView = this->getParameterByName("u_View");
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this->paramModel = this->getParameterByName("u_Model");
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this->paramColor = this->getParameterByName("u_Color");
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this->paramTexture = this->getParameterByName("u_Text");
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this->paramHasTexture = this->getParameterByName("u_HasTexture");
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} |