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-rw-r--r--src/renderer/opengl/GlIndexBuffer.cpp44
-rw-r--r--src/renderer/opengl/GlIndexBuffer.hpp23
-rw-r--r--src/renderer/opengl/GlRenderer.cpp220
-rw-r--r--src/renderer/opengl/GlRenderer.hpp34
-rw-r--r--src/renderer/opengl/GlShader.cpp80
-rw-r--r--src/renderer/opengl/GlShader.hpp15
-rw-r--r--src/renderer/opengl/GlVertexBuffer.cpp54
-rw-r--r--src/renderer/opengl/GlVertexBuffer.hpp27
8 files changed, 0 insertions, 497 deletions
diff --git a/src/renderer/opengl/GlIndexBuffer.cpp b/src/renderer/opengl/GlIndexBuffer.cpp
deleted file mode 100644
index c5bd713..0000000
--- a/src/renderer/opengl/GlIndexBuffer.cpp
+++ /dev/null
@@ -1,44 +0,0 @@
-#include <renderer/opengl/GlIndexBuffer.hpp>
-
-#include <GL/glew.h>
-#include <string.h>
-#include <stdio.h>
-#include <assert.h>
-
-void GlIndexBuffer::Init() {
- m_CurrentIndex = 0;
- m_Indices.reserve(16384);
- glGenBuffers(1, &m_Id);
- glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, m_Id);
-}
-
-uint32_t *GlIndexBuffer::GetData() {
- return m_Indices.data();
-}
-
-uint32_t GlIndexBuffer::GetCount() {
- uint32_t count = static_cast<uint32_t>(m_Indices.size());
- return count;
-}
-
-void GlIndexBuffer::Reset() {
- m_CurrentIndex = 0;
- m_Indices.clear();
-}
-
-void GlIndexBuffer::PushRectangle() {
- uint32_t current_index = m_CurrentIndex;
- m_Indices.push_back(current_index + 0);
- m_Indices.push_back(current_index + 1);
- m_Indices.push_back(current_index + 2);
- m_Indices.push_back(current_index + 0);
- m_Indices.push_back(current_index + 2);
- m_Indices.push_back(current_index + 3);
- m_CurrentIndex += 4;
-}
-
-void GlIndexBuffer::TransferData() {
- size_t size = m_Indices.size() * sizeof(uint32_t);
- glBufferData(GL_ELEMENT_ARRAY_BUFFER, size, m_Indices.data(), GL_STATIC_DRAW);
-}
-
diff --git a/src/renderer/opengl/GlIndexBuffer.hpp b/src/renderer/opengl/GlIndexBuffer.hpp
deleted file mode 100644
index 7805460..0000000
--- a/src/renderer/opengl/GlIndexBuffer.hpp
+++ /dev/null
@@ -1,23 +0,0 @@
-#pragma once
-
-#include <renderer/Renderer.hpp>
-
-class GlIndexBuffer {
-public:
- GlIndexBuffer() = default;
- void Init();
- void Reset();
-
-public:
- uint32_t GetCount();
- uint32_t *GetData();
-
- void PushRectangle();
- void TransferData();
-
-private:
- uint32_t m_Id;
- uint32_t m_CurrentIndex;
- std::vector<uint32_t> m_Indices;
-};
-
diff --git a/src/renderer/opengl/GlRenderer.cpp b/src/renderer/opengl/GlRenderer.cpp
deleted file mode 100644
index 5d7c985..0000000
--- a/src/renderer/opengl/GlRenderer.cpp
+++ /dev/null
@@ -1,220 +0,0 @@
-#include <basic/defs.hpp>
-#include <iterator>
-#include <renderer/RenderGroup.hpp>
-#include <renderer/opengl/GlRenderer.hpp>
-#include <basic/math.hpp>
-#include <renderer/Renderer.hpp>
-#include <renderer/opengl/GlVertexBuffer.hpp>
-
-#include <SDL3/SDL.h>
-#include <SDL3/SDL_video.h>
-#include <GL/glew.h>
-#include <GL/gl.h>
-#include <assert.h>
-#include <cstdio>
-
-void GLAPIENTRY
-MessageCallback(GLenum source,
- GLenum type,
- GLuint id,
- GLenum severity,
- GLsizei length,
- const GLchar* message,
- const void* userParam)
-{
- fprintf(stderr, "GL CALLBACK: %s, type = 0x%x, severity = 0x%x, message = %s\n",
- type == GL_DEBUG_TYPE_ERROR ? "** GL ERROR **" : "",
- type,
- severity,
- message
- );
-}
-
-GlRenderer::~GlRenderer() {
- SDL_GL_DestroyContext(m_Context);
-}
-
-GlRenderer::GlRenderer(SDL_Window *window)
- : m_Window(window), m_Context(nullptr) {
-}
-
-bool GlRenderer::Init() {
- SDL_GL_SetAttribute(SDL_GL_CONTEXT_MAJOR_VERSION, 3);
- SDL_GL_SetAttribute(SDL_GL_CONTEXT_MINOR_VERSION, 3);
- SDL_GLContext sdl_gl_context = SDL_GL_CreateContext(m_Window);
- if (!sdl_gl_context) {
- return false;
- }
-
- GLenum err = glewInit();
- if (GLEW_OK != err)
- {
- fprintf(stderr, "Error: %s\n", glewGetErrorString(err));
- SDL_GL_DestroyContext(sdl_gl_context);
- return false;
- }
-
-#if 0
- glEnable(GL_DEBUG_OUTPUT);
- glDebugMessageCallback(MessageCallback, 0);
-#endif
-
- GLuint vertex_array;
- glGenVertexArrays(1, &vertex_array);
- glBindVertexArray(vertex_array);
-
-
- // init rectangle rendering
- if (!m_RectangleShader.InitProgram()) {
- return false;
- }
- m_RectangleVertexBuffer.Init();
- m_RectangleIndexBuffer.Init();
-
-
- // init text rendering
- if (!m_TextShader.InitProgram()) {
- return false;
- }
- m_TextVertexBuffer.Init();
- m_TextIndexBuffer.Init();
-
-
- m_Context = sdl_gl_context;
- return true;
-}
-
-void GlRenderer::Draw(RenderGroup& render_group) {
- render_group.Sort();
-
- float camera_width = render_group.m_CameraWidth;
- float camera_height = render_group.m_CameraHeight;
-
-
- glViewport(0, 0, render_group.m_ScreenWidth, render_group.m_ScreenHeight);
- glClearColor(render_group.m_ClearColor.x,
- render_group.m_ClearColor.y,
- render_group.m_ClearColor.z,
- 1.0f);
- glClear(GL_COLOR_BUFFER_BIT);
-
-
- // viewport space
- float scale = render_group.GetScale();
- int32_t viewport_width = static_cast<int32_t>(camera_width * scale);
- int32_t viewport_height = static_cast<int32_t>(camera_height * scale);
- int32_t viewport_x0 = (render_group.m_ScreenWidth - viewport_width) / 2;
- int32_t viewport_y0 = (render_group.m_ScreenHeight - viewport_height) / 2;
- glViewport(viewport_x0, viewport_y0, viewport_width, viewport_height);
-
-
- // draw batches
- float last_z = -1;
- for (auto [z, entity_index] : render_group.m_RSortEntries) {
- REntity& render_entity = render_group.m_REntities[entity_index];
- switch (render_entity.type) {
- case REntityType_Rectangle: {
- // clip space (from camera space to [-1, 1] for pos and [0, 2] for dim)
- V3F32 pos = render_entity.rect.pos;
- V2F32 dim = render_entity.rect.dim;
- pos.x = 2*(pos.x / camera_width) - 1;
- pos.y = 2*(pos.y / camera_height) - 1;
- dim.x = 2*(dim.x / camera_width);
- dim.y = 2*(dim.y / camera_height);
-
- if (render_entity.rect.pos.z > last_z) {
- DrawBatch();
- last_z = z;
- }
-
- m_RectangleVertexBuffer.PushRectangle(pos, dim, render_entity.rect.color);
- m_RectangleIndexBuffer.PushRectangle();
- }
-
- case REntityType_Bitmap: {
- REntity_Bitmap& bitmap = render_entity.bitmap;
-
- // clip space (from camera space to [-1, 1] for pos and [0, 2] for dim)
- V3F32 pos = render_entity.bitmap.pos;
- pos.x = 2*(pos.x / camera_width) - 1;
- pos.y = 2*(pos.y / camera_height) - 1;
-
-#if 0
-
- // create setup texture
- unsigned int texture_id;
- glGenTextures(1, &texture_id);
- glBindTexture(GL_TEXTURE_2D, texture_id);
- glTexImage2D(GL_TEXTURE_2D, 0, GL_RED, bitmap.width, bitmap.height, 0, GL_RGB, GL_UNSIGNED_BYTE, bitmap.data);
-
- glGenerateMipmap(GL_TEXTURE_2D);
-
- glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
- glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
- glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR);
- glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
-
-
- // apply texture
- glVertexAttribPointer(2, 2, GL_FLOAT, GL_FALSE, 8 * sizeof(float), (void*)(6 * sizeof(float)));
- glEnableVertexAttribArray(2);
-
- // delete texture
- glDeleteTextures(1, &texture_id);
-
-
-
- // 1) set vertex buffer
- // 2) set texture coordinates
- pos.x = 2*(pos.x / camera_width) - 1;
- pos.y = 2*(pos.y / camera_height) - 1;
- dim.x = 2*(dim.x / camera_width);
- dim.y = 2*(dim.y / camera_height);
- if (render_entity.rect.pos.z > last_z) {
- DrawBatch();
- last_z = z;
- }
-#endif
-
-
- } break;
-
- InvalidDefaultCase;
- }
- }
-
- DrawBatch();
-}
-
-void GlRenderer::Present() {
- SDL_GL_SwapWindow(m_Window);
-}
-
-void GlRenderer::DrawBatch() {
- int32_t rectangle_index_count = static_cast<int32_t>(m_RectangleIndexBuffer.GetCount());
- int32_t text_index_count = static_cast<int32_t>(m_TextIndexBuffer.GetCount());
-
- if (rectangle_index_count) {
- m_RectangleVertexBuffer.TransferData();
- m_RectangleIndexBuffer.TransferData();
- m_RectangleShader.UseProgram();
-
- glDrawElements(GL_TRIANGLES, rectangle_index_count, GL_UNSIGNED_INT, 0);
-
- m_RectangleVertexBuffer.Reset();
- m_RectangleIndexBuffer.Reset();
- }
-
- if (text_index_count) {
- m_TextVertexBuffer.TransferData();
- m_TextIndexBuffer.TransferData();
- m_TextShader.UseProgram();
-
- glDrawElements(GL_TRIANGLES, text_index_count, GL_UNSIGNED_INT, 0);
-
- m_TextVertexBuffer.Reset();
- m_TextIndexBuffer.Reset();
- }
-}
-
-
diff --git a/src/renderer/opengl/GlRenderer.hpp b/src/renderer/opengl/GlRenderer.hpp
deleted file mode 100644
index d59ba45..0000000
--- a/src/renderer/opengl/GlRenderer.hpp
+++ /dev/null
@@ -1,34 +0,0 @@
-#pragma once
-
-#include <renderer/Renderer.hpp>
-#include <renderer/opengl/GlVertexBuffer.hpp>
-#include <renderer/opengl/GlIndexBuffer.hpp>
-#include <renderer/opengl/GlShader.hpp>
-
-class GlRenderer : public Renderer {
-public:
- GlRenderer(SDL_Window *window);
- ~GlRenderer() override;
-
- bool Init() override;
- void Draw(RenderGroup& render_group) override;
- void Present() override;
-
- void InitTexture();
-
-private:
- void DrawBatch();
-
-private:
- SDL_Window *m_Window;
- SDL_GLContext m_Context;
-
- GlVertexBuffer m_RectangleVertexBuffer;
- GlIndexBuffer m_RectangleIndexBuffer;
- GlShader m_RectangleShader;
-
- GlVertexBuffer m_TextVertexBuffer;
- GlVertexBuffer m_TextIndexBuffer;
- GlShader m_TextShader;
-};
-
diff --git a/src/renderer/opengl/GlShader.cpp b/src/renderer/opengl/GlShader.cpp
deleted file mode 100644
index cf7c6c5..0000000
--- a/src/renderer/opengl/GlShader.cpp
+++ /dev/null
@@ -1,80 +0,0 @@
-#include <renderer/opengl/GlShader.hpp>
-#include <GL/glew.h>
-#include <stdio.h>
-
-static const char *s_vertex_shader_src =
-"#version 330 core\n"
-"layout (location = 0) in vec3 aPos;\n"
-"layout (location = 1) in vec3 aColor;\n"
-"\n"
-"out vec4 vertexColor;\n"
-"\n"
-"void main()\n"
-"{\n"
-" gl_Position = vec4(aPos.xy, 0.0, 1.0);\n"
-" vertexColor = vec4(aColor, 1.0);\n"
-"}\n"
-;
-
-static const char *s_fragment_shader_src =
-"#version 330 core\n"
-"in vec4 vertexColor;\n"
-"\n"
-"out vec4 FragColor;\n"
-"\n"
-"void main()\n"
-"{\n"
-" FragColor = vertexColor;\n"
-"}\n"
-;
-
-bool GlShader::InitProgram() {
- GLuint vertex_shader;
- GLuint fragment_shader;
- if (!CompileShader(&vertex_shader, s_vertex_shader_src, GL_VERTEX_SHADER) ||
- !CompileShader(&fragment_shader, s_fragment_shader_src, GL_FRAGMENT_SHADER)) {
- return false;
- }
-
- GLuint program = glCreateProgram();
- glAttachShader(program, vertex_shader);
- glAttachShader(program, fragment_shader);
- glLinkProgram(program);
-
- glDeleteShader(vertex_shader);
- glDeleteShader(fragment_shader);
-
- int success;
- char info_log[512];
- glGetProgramiv(program, GL_LINK_STATUS, &success);
- if (!success) {
- printf("error linking shader program\n%s\n", info_log);
- return false;
- }
-
- m_ProgramId = program;
- return true;
-}
-
-void GlShader::UseProgram() {
- glUseProgram(m_ProgramId);
-}
-
-bool GlShader::CompileShader(GLuint *id, const char *src, GLenum type) {
- GLuint shader = glCreateShader(type);
- glShaderSource(shader, 1, &src, 0);
- glCompileShader(shader);
-
- int success;
- char info_log[512];
- glGetShaderiv(shader, GL_COMPILE_STATUS, &success);
- if(!success) {
- glGetShaderInfoLog(shader, 512, 0, info_log);
- printf("error %s shader compilation failed\n%s\n", type == GL_VERTEX_SHADER ? "vertex" : "fragment", info_log);
- glDeleteShader(shader);
- return false;
- }
-
- *id = shader;
- return true;
-}
diff --git a/src/renderer/opengl/GlShader.hpp b/src/renderer/opengl/GlShader.hpp
deleted file mode 100644
index d195a8a..0000000
--- a/src/renderer/opengl/GlShader.hpp
+++ /dev/null
@@ -1,15 +0,0 @@
-#pragma once
-
-#include <GL/glew.h>
-
-class GlShader {
-public:
- GlShader() = default;
- bool InitProgram();
- void UseProgram();
-private:
- bool CompileShader(GLuint *id, const char *src, GLenum type);
-
-private:
- GLuint m_ProgramId;
-};
diff --git a/src/renderer/opengl/GlVertexBuffer.cpp b/src/renderer/opengl/GlVertexBuffer.cpp
deleted file mode 100644
index f716c50..0000000
--- a/src/renderer/opengl/GlVertexBuffer.cpp
+++ /dev/null
@@ -1,54 +0,0 @@
-#include <renderer/opengl/GlVertexBuffer.hpp>
-
-#include <GL/glew.h>
-#include <string.h>
-
-#include <stdio.h>
-
-void GlVertexBuffer::Init() {
- m_Vertices.reserve(16384);
- glGenBuffers(1, &m_Id);
- glBindBuffer(GL_ARRAY_BUFFER, m_Id);
-}
-
-void GlVertexBuffer::Reset() {
- glDisableVertexAttribArray(0);
- glDisableVertexAttribArray(1);
- m_Vertices.clear();
-}
-
-float *GlVertexBuffer::GetData() {
- return reinterpret_cast<float*>(m_Vertices.data());
-}
-
-uint32_t GlVertexBuffer::GetCount() {
- return static_cast<uint32_t>(m_Vertices.size());
-}
-
-void GlVertexBuffer::PushRectangle(V3F32 pos, V2F32 dim, V3F32 color) {
- V3F32 positions[4] = {
- V3F32(pos.x, pos.y, pos.z),
- V3F32(pos.x + dim.x, pos.y, pos.z),
- V3F32(pos.x + dim.x, pos.y + dim.y, pos.z),
- V3F32(pos.x, pos.y + dim.y, pos.z),
- };
-
- for (int i = 0; i < 4; i++) {
- GlVertex vertex = {};
- vertex.pos = positions[i];
- vertex.color = color;
- m_Vertices.push_back(vertex);
- }
-}
-
-void GlVertexBuffer::TransferData() {
- size_t size = m_Vertices.size() * sizeof(GlVertex);
- GLsizei stride = sizeof(GlVertex);
- const void *offset_color = (const void*)(3*sizeof(float));
- glEnableVertexAttribArray(0);
- glEnableVertexAttribArray(1);
- glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, stride, 0);
- glVertexAttribPointer(1, 3, GL_FLOAT, GL_FALSE, stride, offset_color);
- glBufferData(GL_ARRAY_BUFFER, size, m_Vertices.data(), GL_STATIC_DRAW);
-}
-
diff --git a/src/renderer/opengl/GlVertexBuffer.hpp b/src/renderer/opengl/GlVertexBuffer.hpp
deleted file mode 100644
index 4099ca2..0000000
--- a/src/renderer/opengl/GlVertexBuffer.hpp
+++ /dev/null
@@ -1,27 +0,0 @@
-#pragma once
-
-#include <renderer/Renderer.hpp>
-
-struct GlVertex {
- V3F32 pos;
- V3F32 color;
-};
-
-class GlVertexBuffer {
-public:
- GlVertexBuffer() = default;
- void Init();
- void Reset();
-
-public:
- float *GetData();
- uint32_t GetCount();
-
- void PushRectangle(V3F32 pos, V2F32 dim, V3F32 color);
- void TransferData();
-
-private:
- uint32_t m_Id;
- std::vector<GlVertex> m_Vertices;
-};
-
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