From c29a911cd1a3f23f66478f205cace14487aadc56 Mon Sep 17 00:00:00 2001
From: Matthew Kosarek <mattkae@protonmail.com>
Date: Wed, 17 Mar 2021 23:10:55 -0400
Subject: Beginning to build out the orthographic renderer, and updated styles

---
 frontend/_shared/OrthographicRenderer.cpp  | 76 ++++++++++++++++++++++++++++++
 frontend/_shared/OrthographicRenderer.cpp~ |  0
 frontend/_shared/OrthographicRenderer.h    | 41 ++++++++++++++++
 frontend/_shared/OrthographicRenderer.h~   |  5 ++
 frontend/_shared/types.h                   | 16 +++++++
 frontend/_shared/types.h~                  |  6 +++
 6 files changed, 144 insertions(+)
 create mode 100644 frontend/_shared/OrthographicRenderer.cpp
 create mode 100644 frontend/_shared/OrthographicRenderer.cpp~
 create mode 100644 frontend/_shared/OrthographicRenderer.h
 create mode 100644 frontend/_shared/OrthographicRenderer.h~
 create mode 100644 frontend/_shared/types.h
 create mode 100644 frontend/_shared/types.h~

(limited to 'frontend/_shared')

diff --git a/frontend/_shared/OrthographicRenderer.cpp b/frontend/_shared/OrthographicRenderer.cpp
new file mode 100644
index 0000000..9dc9892
--- /dev/null
+++ b/frontend/_shared/OrthographicRenderer.cpp
@@ -0,0 +1,76 @@
+#include "OrthographicRenderer.h"
+
+const char* orthographicVertex = 
+"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, 1, 1); \n"
+"    gl_Position = fragmentPosition; \n"
+"    VertexColor = color; \n"
+"}";
+
+const char* orthographicFragment = 
+"varying lowp vec4 VertexColor; \n"
+"void main() { \n"
+"    gl_FragColor = VertexColor; \n"
+"}";
+
+void OrthographicRenderer::load() {
+	printf("Compiling orthographic...\n");
+	shader = loadShader(orthographicVertex, orthographicFragment);
+
+	useShader(shader);
+	attributes.position = getShaderAttribute(shader, "position");
+	attributes.color = getShaderAttribute(shader, "color");
+	uniforms.projection = getShaderUniform(shader, "projection");
+	uniforms.model = getShaderUniform(shader, "model");
+
+	printf("Orthographic compiled.\n");
+}
+	
+void OrthographicRenderer::render() {
+	useShader(shader);
+	setShaderMat4(uniforms.projection, projection);
+}
+
+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/OrthographicRenderer.cpp~ b/frontend/_shared/OrthographicRenderer.cpp~
new file mode 100644
index 0000000..e69de29
diff --git a/frontend/_shared/OrthographicRenderer.h b/frontend/_shared/OrthographicRenderer.h
new file mode 100644
index 0000000..e04b5ec
--- /dev/null
+++ b/frontend/_shared/OrthographicRenderer.h
@@ -0,0 +1,41 @@
+#pragma once
+
+#include "types.h"
+#include "Shader.h"
+#include "mathlib.h"
+
+struct OrthographicRenderer {
+	Mat4x4 projection;
+	uint32 shader;
+
+	struct {
+		int32 position;
+		int32 color;
+	} attributes;
+
+	struct {
+		int32 projection;
+		int32 model;
+	} uniforms;
+
+	void load();
+	void render();
+	void unload();
+};
+
+struct OrthographicVertex {
+	Vector2 position;
+	Vector2 color;
+};
+
+template <uint32 N>
+struct OrthographicShape {
+	uint32 vao;
+	uint32 vbo;
+	OrthographicVertex vertices[N];
+	Mat4x4 model;
+
+	void load(OrthographicRenderer* renderer);
+	void render(OrthographicRenderer* renderer);
+	void unload();
+};
diff --git a/frontend/_shared/OrthographicRenderer.h~ b/frontend/_shared/OrthographicRenderer.h~
new file mode 100644
index 0000000..52f7326
--- /dev/null
+++ b/frontend/_shared/OrthographicRenderer.h~
@@ -0,0 +1,5 @@
+#pragma once
+
+struct OrthographicShader {
+
+};
diff --git a/frontend/_shared/types.h b/frontend/_shared/types.h
new file mode 100644
index 0000000..39d6c17
--- /dev/null
+++ b/frontend/_shared/types.h
@@ -0,0 +1,16 @@
+#pragma once
+
+#include <cstdint>
+
+typedef int8 int8_t;
+typedef int16 int16_t;
+typedef int32 int32_t;
+typedef int64 int64_t;
+
+typedef uint8 uint8_t;
+typedef uint16 uint16_t;
+typedef uint32 uint32_t;
+typedef uint64 uint;
+
+typedef float32 float;
+typedef float64 double;
diff --git a/frontend/_shared/types.h~ b/frontend/_shared/types.h~
new file mode 100644
index 0000000..e092046
--- /dev/null
+++ b/frontend/_shared/types.h~
@@ -0,0 +1,6 @@
+#include <cstdint>
+
+typedef uint8 uint8_t;
+typedef uint8 uint16_t;
+typedef uint8 uint32_t;
+typedef uint64 uint;
-- 
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