First phase moving from STBTT to FreeType

src/dawnopengl/display/shader/CMakeLists.txt

@@ -7,6 +7,7 @@
 target_sources(${DAWN_TARGET_NAME}
   PRIVATE
     ShaderProgram.cpp
+    FontShader.cpp
     SimpleTexturedShader.cpp
     SimpleBillboardedShader.cpp
 )

src/dawnopengl/display/shader/FontShader.cpp

@@ -0,0 +1,69 @@
+// Copyright (c) 2023 Dominic Masters
+// 
+// This software is released under the MIT License.
+// https://opensource.org/licenses/MIT
+
+#include "FontShader.hpp"
+#include "scene/components/display/mesh/MeshRenderer.hpp"
+#include "scene/components/display/Camera.hpp"
+
+using namespace Dawn;
+
+void FontShaderProgram::compile() {
+  #if DAWN_OPENGL_GLSL
+    this->compileShader(
+      {
+        { "aPos", 0 },
+        { "aTexCoord", 1 }
+      },
+      // Vertex Shader
+      "#version 330 core\n"
+      "layout (location = 0) in vec3 aPos;\n"
+      "layout (location = 1) in vec2 aTexCoord;\n"
+
+      "uniform mat4 u_Proj;\n"
+      "uniform mat4 u_View;\n"
+      "uniform mat4 u_Model;\n"
+
+      "out vec2 o_TextCoord;\n"
+      "void main() {\n"
+        "gl_Position = u_Proj * u_View * u_Model * vec4(aPos, 1.0);\n"
+        "o_TextCoord = vec2(aTexCoord.x, aTexCoord.y);\n"
+      "}",
+
+      // Fragment Shader
+      "#version 330 core\n"
+      "in vec2 o_TextCoord;\n"
+      "out vec4 o_Color;\n"
+      "uniform vec4 u_Color;\n"
+      "uniform bool u_HasTexture;\n"
+      "uniform sampler2D u_Text;\n"
+
+      "void main() {\n"
+        "o_Color = u_Color;\n"
+        "o_Color.a *= texture(u_Text, o_TextCoord).r;\n"
+      "}\n"
+    );
+  #else
+    #error Shader Type unknown
+  #endif
+
+  this->paramProjection = this->getParameterByName("u_Proj");
+  this->paramView = this->getParameterByName("u_View");
+  this->paramModel = this->getParameterByName("u_Model");
+  this->paramColor = this->getParameterByName("u_Color");
+  this->paramTexture = this->getParameterByName("u_Text");
+}
+
+void FontShader::compile() {
+  this->program.compile();
+}
+
+std::vector<struct ShaderPassItem> FontShader::getPassItems(
+  Mesh *mesh,
+  Material *material,
+  Camera *camera
+) {
+  std::vector<struct ShaderPassItem> passes;
+  return passes;
+}

src/dawnopengl/display/shader/FontShader.hpp

@@ -0,0 +1,39 @@
+// Copyright (c) 2023 Dominic Masters
+// 
+// This software is released under the MIT License.
+// https://opensource.org/licenses/MIT
+
+#pragma once
+// Copyright (c) 2023 Dominic Masters
+// 
+// This software is released under the MIT License.
+// https://opensource.org/licenses/MIT
+
+#pragma once
+#include "display/shader/ShaderManager.hpp"
+
+namespace Dawn {
+  class FontShaderProgram : public ShaderProgram {
+    public:
+      shaderparameter_t paramProjection;
+      shaderparameter_t paramView;
+      shaderparameter_t paramModel;
+      shaderparameter_t paramColor;
+      shaderparameter_t paramTexture;
+
+      void compile() override;
+  };
+
+  class FontShader : public Shader {
+    public:
+      FontShaderProgram program;
+
+      void compile() override;
+
+      std::vector<struct ShaderPassItem> getPassItems(
+        Mesh *mesh,
+        Material *material,
+        Camera *camera
+      ) override;
+  };
+}