Working tree render, now just have to do the leaves

1 files changed, 57 insertions, 0 deletions

diff --git a/themes/deprecated/TreeRenderer.cpp b/themes/deprecated/TreeRenderer.cpp
new file mode 100644
index 0000000..ef1ed79
--- /dev/null
+++ b/themes/deprecated/TreeRenderer.cpp
@@ -0,0 +1,57 @@
+#include "TreeRenderer.h"
+#include "WebglContext.h"
+#include "mathlib.h"
+#include <GLES2/gl2.h>
+
+const char* TreeRendererVertexShader = 
+"attribute vec2 position; \n"
+"attribute vec4 color; \n"
+"uniform mat4 projection; \n"
+"uniform mat4 model; \n"
+"varying lowp vec4 VertexColor; \n"
+"void main() { \n"
+"    vec4 fragmentPosition = projection * model * vec4(position.x, position.y, 1, 1); \n"
+"    gl_Position = fragmentPosition; \n"
+"    VertexColor = color; \n"
+"}";
+
+const char* TreeRendererFragmentShader = 
+"varying lowp vec4 VertexColor; \n"
+"void main() { \n"
+"    gl_FragColor = VertexColor; \n"
+"}";
+
+void TreeRenderer::load(WebglContext* context) {
+	printf("Compiling TreeRenderer shader...\n");
+	shader = loadShader(TreeRendererVertexShader, TreeRendererFragmentShader);
+
+	useShader(shader);
+	attributes.position = getShaderAttribute(shader, "position");
+	attributes.color = getShaderAttribute(shader, "color");
+	uniforms.projection = getShaderUniform(shader, "projection");
+	uniforms.model = getShaderUniform(shader, "model");
+	projection = Mat4x4().getOrthographicMatrix(0, context->width, 0, context->height);
+
+	printf("TreeRenderer shader compiled.\n");
+}
+	
+void TreeRenderer::render(float32 dtSeconds) {
+    timeElapsed += dtSeconds;
+
+	glEnable(GL_DEPTH_TEST);
+	glDepthFunc(GL_LEQUAL);
+	glDepthMask(GL_TRUE);
+	glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
+	glEnable(GL_BLEND);
+	glClearColor(clearColor.x, clearColor.y, clearColor.z, clearColor.w);
+	glClearDepth(1.0f);
+    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT);
+	useShader(shader);
+	setShaderMat4(uniforms.projection, projection);
+}
+
+void TreeRenderer::unload() {
+	glClearColor(0.f, 0.f, 0.f, 0.f);
+    glClear(GL_COLOR_BUFFER_BIT);
+	glDeleteProgram(shader);
+}