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-rw-r--r--src/RendererWidget.cpp76
1 files changed, 76 insertions, 0 deletions
diff --git a/src/RendererWidget.cpp b/src/RendererWidget.cpp
new file mode 100644
index 0000000..6b732e3
--- /dev/null
+++ b/src/RendererWidget.cpp
@@ -0,0 +1,76 @@
+#include "RendererWidget.hpp"
+
+const GLfloat vertices[] = {
+ 0.0f,0.0f,0.0f,
+ 1.0f,1.0f,0.0f,
+ 0.0f,1.0f,0.0f,
+
+ 0.0f,0.0f,0.0f,
+ 1.0f,0.0f,0.0f,
+ 1.0f,1.0f,0.0f,
+};
+
+const GLfloat uvs[] = {
+ 0.0f,0.0f,
+ 1.0f,1.0f,
+ 0.0f,1.0f,
+
+ 0.0f,0.0f,
+ 1.0f,0.0f,
+ 1.0f,1.0f,
+};
+
+static GLuint VboVertices, VboUvs, Vao;
+static Shader* guiShader = nullptr;
+
+RendererWidget::RendererWidget(RootWidget *widget) {
+ this->tree = widget;
+
+ if (guiShader == nullptr) {
+ guiShader = new Shader("./shaders/gui.vs", "./shaders/gui.fs");
+ guiShader->Use();
+ glUniform1i(glGetUniformLocation(guiShader->Program, "textureAtlas"), 0);
+
+ glGenBuffers(1, &VboVertices);
+ glBindBuffer(GL_ARRAY_BUFFER, VboVertices);
+ glBufferData(GL_ARRAY_BUFFER, sizeof(vertices), vertices, GL_STATIC_DRAW);
+
+ glGenBuffers(1, &VboUvs);
+ glBindBuffer(GL_ARRAY_BUFFER, VboUvs);
+ glBufferData(GL_ARRAY_BUFFER, sizeof(uvs), uvs, GL_STATIC_DRAW);
+
+ glGenVertexArrays(1, &Vao);
+ glBindVertexArray(Vao);
+ {
+ glBindBuffer(GL_ARRAY_BUFFER, VboVertices);
+ glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, 3 * sizeof(GLfloat), (GLvoid*)0);
+ glEnableVertexAttribArray(0);
+
+ glBindBuffer(GL_ARRAY_BUFFER, VboUvs);
+ glVertexAttribPointer(1, 2, GL_FLOAT, GL_FALSE, 2 * sizeof(GLfloat), (GLvoid*)0);
+ glEnableVertexAttribArray(1);
+ }
+ glBindVertexArray(0);
+ }
+}
+
+RendererWidget::~RendererWidget() {
+
+}
+
+void RendererWidget::Render(RenderState &state) {
+ state.SetActiveVao(Vao);
+ state.SetActiveShader(guiShader->Program);
+
+ auto toRender = tree->GetRenderList();
+ for (auto& it : toRender) {
+ auto[x, y, w, h] = it->GetTexture();
+ glUniform4f(glGetUniformLocation(guiShader->Program, "widgetTexture"), x, y, w, h);
+
+ glUniform4f(glGetUniformLocation(guiShader->Program, "transform"), it->x, it->y, it->w, it->h);
+
+ glDrawArrays(GL_TRIANGLES, 0, 36);
+ }
+
+ glCheckError();
+} \ No newline at end of file