From 25e5dd3951e8cc7827761ea8ba2f5206b354d855 Mon Sep 17 00:00:00 2001
From: Matthew Kosarek <mattkae@protonmail.com>
Date: Tue, 23 Mar 2021 21:57:51 -0400
Subject: Working WebGl abstraction layer and build process

---
 frontend/shared_cpp/OrthographicRenderer.cpp | 45 +++++-----------------------
 frontend/shared_cpp/OrthographicRenderer.h   | 38 ++++++++++++++++++++++-
 frontend/shared_cpp/WebglContext.h           |  2 +-
 frontend/shared_cpp/types.h                  | 20 ++++++-------
 4 files changed, 56 insertions(+), 49 deletions(-)

(limited to 'frontend/shared_cpp')

diff --git a/frontend/shared_cpp/OrthographicRenderer.cpp b/frontend/shared_cpp/OrthographicRenderer.cpp
index 9dc9892..d160ecc 100644
--- a/frontend/shared_cpp/OrthographicRenderer.cpp
+++ b/frontend/shared_cpp/OrthographicRenderer.cpp
@@ -19,7 +19,7 @@ const char* orthographicFragment =
 "}";
 
 void OrthographicRenderer::load() {
-	printf("Compiling orthographic...\n");
+	printf("Compiling orthographic shader...\n");
 	shader = loadShader(orthographicVertex, orthographicFragment);
 
 	useShader(shader);
@@ -28,10 +28,16 @@ void OrthographicRenderer::load() {
 	uniforms.projection = getShaderUniform(shader, "projection");
 	uniforms.model = getShaderUniform(shader, "model");
 
-	printf("Orthographic compiled.\n");
+	printf("Orthographic shader compiled.\n");
 }
 	
 void OrthographicRenderer::render() {
+	glEnable(GL_DEPTH_TEST);
+	glDepthFunc(GL_LEQUAL);
+	glDepthMask(GL_TRUE);
+	glClearColor(0.2f, 0.3f, 0.3f, 1.0f);
+	glClearDepth(1.0f);
+    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT);
 	useShader(shader);
 	setShaderMat4(uniforms.projection, projection);
 }
@@ -39,38 +45,3 @@ void OrthographicRenderer::render() {
 void OrthographicRenderer::unload() {
 	glDeleteProgram(shader);
 }
-
-template <uint32 N>
-void OrthographicShape::load(OrthographicRenderer* renderer) {
-	useShader(renderer->shader);
-
-	glGenVertexArrays(1, &vao);
-	glBindVertexArray(vao);
-
-	glGenBuffeloadrs(1, &vbo);
-	glBindBuffer(GL_ARRAY_BUFFER, vbo);
-	glBufferData(GL_ARRAY_BUFFER, N * sizeof(OrthographicVertex), &vertices[0], GL_STATIC_DRAW);
-
-	glEnableVerloadtexAttribArray(renderer->attributes.position);
-	glVertexAttribPointer(attributes.position, 2, GL_FLOAT, GL_FALSE, sizeof(OrthographicVertex), (GLvoid *)0);
-
-	glEnableVertexAttribArray(renderer->attributes.color);
-	glVertexAttribPointer(attributes.color, 4, GL_FLOAT, GL_FALSE, sizeof(OrthographicVertex), (GLvoid *)offsetof(OrthographicVertex, color));
-
-	glBindBuffer(GL_ARRAY_BUFFER, 0);
-	glBindVertexArray(0);
-}
-
-template <uint32 N>
-void OrthographicShape::render(OrthographicRenderer* renderer) {
-	setShaderMat4(renderer->uniforms.model, model);
-
-	glBindVertexArray(vao);
-	glDrawArrays(GL_TRIANGLES, 0, 3);
-	glBindVertexArray(0);
-}
-
-void OrthographicShape::unload() {
-	glDeleteVertexArrays(1, &vao);
-	gDeleteBuffers(1, &vbo);
-}
diff --git a/frontend/shared_cpp/OrthographicRenderer.h b/frontend/shared_cpp/OrthographicRenderer.h
index e04b5ec..c72639e 100644
--- a/frontend/shared_cpp/OrthographicRenderer.h
+++ b/frontend/shared_cpp/OrthographicRenderer.h
@@ -25,7 +25,7 @@ struct OrthographicRenderer {
 
 struct OrthographicVertex {
 	Vector2 position;
-	Vector2 color;
+	Vector4 color;
 };
 
 template <uint32 N>
@@ -39,3 +39,39 @@ struct OrthographicShape {
 	void render(OrthographicRenderer* renderer);
 	void unload();
 };
+
+template <uint32 N>
+void OrthographicShape<N>::load(OrthographicRenderer* renderer) {
+	useShader(renderer->shader);
+
+	glGenVertexArrays(1, &vao);
+	glBindVertexArray(vao);
+
+	glGenBuffers(1, &vbo);
+	glBindBuffer(GL_ARRAY_BUFFER, vbo);
+	glBufferData(GL_ARRAY_BUFFER, N * sizeof(OrthographicVertex), &vertices[0], GL_STATIC_DRAW);
+
+	glEnableVertexAttribArray(renderer->attributes.position);
+	glVertexAttribPointer(renderer->attributes.position, 2, GL_FLOAT, GL_FALSE, sizeof(OrthographicVertex), (GLvoid *)0);
+
+	glEnableVertexAttribArray(renderer->attributes.color);
+	glVertexAttribPointer(renderer->attributes.color, 4, GL_FLOAT, GL_FALSE, sizeof(OrthographicVertex), (GLvoid *)offsetof(OrthographicVertex, color));
+
+	glBindBuffer(GL_ARRAY_BUFFER, 0);
+	glBindVertexArray(0);
+}
+
+template <uint32 N>
+void OrthographicShape<N>::render(OrthographicRenderer* renderer) {
+	setShaderMat4(renderer->uniforms.model, model);
+
+	glBindVertexArray(vao);
+	glDrawArrays(GL_TRIANGLES, 0, 3);
+	glBindVertexArray(0);
+}
+
+template <uint32 N>
+void OrthographicShape<N>::unload() {
+	glDeleteVertexArrays(1, &vao);
+	glDeleteBuffers(1, &vbo);
+}
\ No newline at end of file
diff --git a/frontend/shared_cpp/WebglContext.h b/frontend/shared_cpp/WebglContext.h
index cf9cce2..c8a9480 100644
--- a/frontend/shared_cpp/WebglContext.h
+++ b/frontend/shared_cpp/WebglContext.h
@@ -15,7 +15,7 @@ struct WebglContext {
 		attrs.majorVersion = 3;
 		attrs.minorVersion = 0;
 
-		context = emscripten_webgl_create_context( "#wasm_canvas", &attrs );
+		context = emscripten_webgl_create_context(query, &attrs);
 		makeCurrentContext();
 	};
 	
diff --git a/frontend/shared_cpp/types.h b/frontend/shared_cpp/types.h
index 39d6c17..7bac7f3 100644
--- a/frontend/shared_cpp/types.h
+++ b/frontend/shared_cpp/types.h
@@ -2,15 +2,15 @@
 
 #include <cstdint>
 
-typedef int8 int8_t;
-typedef int16 int16_t;
-typedef int32 int32_t;
-typedef int64 int64_t;
+typedef int8_t int8;
+typedef int16_t int16;
+typedef int32_t int32;
+typedef int64_t int64;
 
-typedef uint8 uint8_t;
-typedef uint16 uint16_t;
-typedef uint32 uint32_t;
-typedef uint64 uint;
+typedef uint8_t uint8;
+typedef uint16_t uint16;
+typedef uint32_t uint32;
+typedef unsigned long uint64;
 
-typedef float32 float;
-typedef float64 double;
+typedef float float32;
+typedef double float64;
-- 
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