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-rw-r--r--src/renderer/RenderGroup.cpp22
-rw-r--r--src/renderer/RenderGroup.hpp31
-rw-r--r--src/renderer/Renderer.cpp233
-rw-r--r--src/renderer/Renderer.hpp37
-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
12 files changed, 283 insertions, 537 deletions
diff --git a/src/renderer/RenderGroup.cpp b/src/renderer/RenderGroup.cpp
index 56e7ec5..e393393 100644
--- a/src/renderer/RenderGroup.cpp
+++ b/src/renderer/RenderGroup.cpp
@@ -71,17 +71,29 @@ ImVec2 RenderGroup::ViewSizeToScreenSizeImGui(V2F32 view_size) {
return result;
}
-void RenderGroup::Clear(V3F32 color) {
+void RenderGroup::Clear(Color color) {
m_ClearColor = color;
}
-void RenderGroup::PushRectangle(V3F32 pos, V2F32 dim, V3F32 color) {
- m_REntities.emplace_back(REntity{.rect{REntityType_Rectangle, pos, dim, color}});
- m_RSortEntries.emplace_back(pos.z, m_REntities.size()-1);
+void RenderGroup::PushRectangle(RectF32 rect, float z, Color color) {
+ m_REntities.emplace_back(REntity{.rect{
+ REntityType_Rectangle,
+ rect.x0, rect.y0,
+ rect.x1, rect.y1,
+ z,
+ color}
+ });
+ m_RSortEntries.emplace_back(z, m_REntities.size()-1);
}
void RenderGroup::PushBitmap(V3F32 pos, int w, int h, void *data) {
- m_REntities.emplace_back(REntity{.bitmap{REntityType_Bitmap, pos, w, h, data}});
+ m_REntities.emplace_back(REntity{.bitmap{
+ REntityType_Bitmap,
+ pos.x, pos.y,
+ w, h,
+ pos.z,
+ data
+ }});
m_RSortEntries.emplace_back(pos.z, m_REntities.size()-1);
}
diff --git a/src/renderer/RenderGroup.hpp b/src/renderer/RenderGroup.hpp
index 4904220..ddaa9ff 100644
--- a/src/renderer/RenderGroup.hpp
+++ b/src/renderer/RenderGroup.hpp
@@ -12,16 +12,21 @@ enum REntityType : int32_t {
struct REntity_Rectangle {
REntityType type;
- V3F32 pos;
- V2F32 dim;
- V3F32 color;
+ float x0;
+ float y0;
+ float x1;
+ float y1;
+ float z;
+ Color color;
};
struct REntity_Bitmap {
REntityType type;
- V3F32 pos;
- int32_t width;
- int32_t height;
+ float x;
+ float y;
+ int32_t w;
+ int32_t h;
+ float z;
void *data;
};
@@ -41,7 +46,7 @@ struct RSortEntry {
class RenderGroup {
public:
RenderGroup();
- void Clear(V3F32 color);
+ void Clear(Color color);
void Reset();
void SetCameraSize(float width, float height);
@@ -53,11 +58,8 @@ public:
public:
- void PushRectangle(V3F32 pos, V2F32 dim, V3F32 color);
- void PushBitmap(V3F32 pos, int width, int height, void *bitmap);
-
-
-private:
+ void PushRectangle(RectF32 rect, float z, Color color);
+ void PushBitmap(V3F32 pos, int w, int h, void *bitmap);
void Sort();
@@ -67,14 +69,13 @@ public:
private:
- friend class GlRenderer;
-
+ friend class Renderer;
float m_CameraWidth;
float m_CameraHeight;
- V3F32 m_ClearColor;
+ Color m_ClearColor;
std::vector<REntity> m_REntities;
std::vector<RSortEntry> m_RSortEntries;
diff --git a/src/renderer/Renderer.cpp b/src/renderer/Renderer.cpp
index 13f5feb..9217f5c 100644
--- a/src/renderer/Renderer.cpp
+++ b/src/renderer/Renderer.cpp
@@ -1,18 +1,233 @@
#include <renderer/Renderer.hpp>
-#include <renderer/opengl/GlRenderer.hpp>
+#include <GL/glew.h>
+#include <cstdio>
+#include <cstdlib>
-std::unique_ptr<Renderer>
-Renderer::Select(Api api, SDL_Window *window) {
- switch (api) {
- case API_OPENGL: {
- return std::make_unique<GlRenderer>(window);
+
+Renderer::Renderer(SDL_Window *window) : m_Window(window), m_Canvas{}
+{
+}
+
+
+bool
+Renderer::Init()
+{
+ GLenum err = glewInit();
+ if (err) {
+ printf("glewInit() error\n");
+ return false;
+ }
+
+ int32_t window_width;
+ int32_t window_height;
+ if (!SDL_GetWindowSize(m_Window, &window_width, &window_height)) {
+ printf("Error: SDL_GetWindowSize: %s\n", SDL_GetError());
+ return false;
+ }
+
+
+ m_Canvas.rshift = 0;
+ m_Canvas.gshift = 8;
+ m_Canvas.bshift = 16;
+ m_Canvas.ashift = 24;
+ ResizeCanvas(window_width, window_height);
+
+
+ glEnable(GL_TEXTURE_2D);
+ glActiveTexture(GL_TEXTURE0);
+
+ glGenTextures(1, &m_GlTexId);
+ glBindTexture(GL_TEXTURE_2D, m_GlTexId);
+
+ 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);
+ glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
+
+
+ return true;
+}
+
+
+void
+Renderer::ResizeCanvas(int32_t w, int32_t h)
+{
+ size_t realloc_size = (size_t)(w * h) * sizeof(m_Canvas.pixels[0]);
+ void *realloc_data = realloc(m_Canvas.pixels, realloc_size);
+ if (!realloc_data) {
+ printf("could not resize offscreen buffer\n");
+ return;
+ }
+
+ m_Canvas.w = w;
+ m_Canvas.h = h;
+ m_Canvas.pixels = (uint32_t*)realloc_data;
+}
+
+
+void
+Renderer::Draw(RenderGroup& rgroup)
+{
+ rgroup.Sort();
+ REntity_Rectangle clear_rect = {
+ REntityType_Rectangle,
+ 0, 0,
+ (float)(m_Canvas.w-1), (float)(m_Canvas.h-1),
+ 0.0f,
+ rgroup.m_ClearColor
+ };
+ DrawRectangle(rgroup, clear_rect);
+
+
+ float z = -1;
+ for (RSortEntry sort_entry : rgroup.m_RSortEntries) {
+ if (sort_entry.z >= z) {
+ z = sort_entry.z;
+ }
+
+ REntity& entity = rgroup.m_REntities[sort_entry.entity_index];
+ switch (entity.type) {
+ case REntityType_Rectangle: {
+ DrawRectangle(rgroup, entity.rect);
+ } break;
+
+ case REntityType_Bitmap: {
+ Color color = {0.0f, 0.0f, 0.0f, 1.0f};
+ DrawMonoBitmap(entity.bitmap, color);
+ } break;
+
+ default:;
}
- InvalidDefaultCase;
}
- return nullptr;
+
+ glActiveTexture(GL_TEXTURE0);
+ glBindTexture(GL_TEXTURE_2D, m_GlTexId);
+ glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, m_Canvas.w, m_Canvas.h, 0, GL_RGBA, GL_UNSIGNED_BYTE, m_Canvas.pixels);
+
+ glBegin(GL_QUADS);
+ glTexCoord2f(0.0f, 0.0f); glVertex2f(-1.0f, -1.0f);
+ glTexCoord2f(1.0f, 0.0f); glVertex2f( 1.0f, -1.0f);
+ glTexCoord2f(1.0f, 1.0f); glVertex2f( 1.0f, 1.0f);
+ glTexCoord2f(0.0f, 1.0f); glVertex2f(-1.0f, 1.0f);
+ glEnd();
+
+ glBindTexture(GL_TEXTURE_2D, 0);
}
-Renderer::~Renderer() {}
+void
+Renderer::DrawRectangle(RenderGroup& rgroup, REntity_Rectangle& rect)
+{
+ int32_t xmin = WorldXToScreenX(rgroup, rect.x0);
+ int32_t ymin = WorldYToScreenY(rgroup, rect.y0);
+ int32_t xmax = WorldXToScreenX(rgroup, rect.x1);
+ int32_t ymax = WorldYToScreenY(rgroup, rect.y1);
+
+ if (xmin < 0) {
+ xmin = 0;
+ }
+ if (ymin < 0) {
+ ymin = 0;
+ }
+ if (xmax >= m_Canvas.w) {
+ xmax = m_Canvas.w - 1;
+ }
+ if (ymax >= m_Canvas.h) {
+ ymax = m_Canvas.h - 1;
+ }
+
+ uint32_t rshift = m_Canvas.rshift;
+ uint32_t gshift = m_Canvas.gshift;
+ uint32_t bshift = m_Canvas.bshift;
+ for (int32_t y = ymin; y <= ymax; ++y) {
+ uint32_t *pixel = m_Canvas.pixels + y * m_Canvas.w + xmin;
+ for (int32_t x = xmin; x <= xmax; ++x) {
+ uint32_t r = (uint32_t)(rect.color.r * 255.0f);
+ uint32_t g = (uint32_t)(rect.color.g * 255.0f);
+ uint32_t b = (uint32_t)(rect.color.b * 255.0f);
+ uint32_t val = r << rshift | g << gshift | b << bshift;
+ *pixel++ = val;
+ }
+ }
+}
+
+
+void
+Renderer::DrawMonoBitmap(REntity_Bitmap& bitmap, Color color)
+{
+ int32_t x0 = (int32_t)bitmap.x;
+ int32_t y0 = (int32_t)bitmap.y;
+ int32_t x1 = (int32_t)bitmap.x + bitmap.w - 1;
+ int32_t y1 = (int32_t)bitmap.y + bitmap.h - 1;
+
+ int32_t cut_left = 0;
+ int32_t cut_bot = 0;
+
+ if (x0 < 0) {
+ cut_left = x0;
+ x0 = 0;
+ }
+ if (y0 < 0) {
+ cut_bot = y0;
+ y0 = 0;
+ }
+ if (x1 >= m_Canvas.w) {
+ x1 = m_Canvas.w - 1;
+ }
+ if (y1 >= m_Canvas.h) {
+ y1 = m_Canvas.h - 1;
+ }
+
+
+ uint32_t rshift = m_Canvas.rshift;
+ uint32_t gshift = m_Canvas.gshift;
+ uint32_t bshift = m_Canvas.bshift;
+
+ uint8_t* grayscale = (uint8_t*)bitmap.data + (-cut_bot * bitmap.w) + (-cut_left);
+ uint32_t* rgba = m_Canvas.pixels + y0 * m_Canvas.w + x0;
+ for (int32_t y = y0; y <= y1; y++) {
+ uint8_t *grayscale_pixels = grayscale;
+ uint32_t *rgba_pixels = rgba;
+ for (int32_t x = x0; x <= x1; x++) {
+ float alpha = *grayscale_pixels / 255.0f;
+
+ // Todo: we do not want to blend with existing color!
+
+ uint32_t rgba_result = *rgba_pixels;
+ float r0 = (rgba_result >> rshift) & 0xff;
+ float g0 = (rgba_result >> gshift) & 0xff;
+ float b0 = (rgba_result >> bshift) & 0xff;
+
+ float r1 = r0 + (color.r - r0)*alpha;
+ float g1 = g0 + (color.g - g0)*alpha;
+ float b1 = b0 + (color.b - b0)*alpha;
+
+ rgba_result = (uint32_t)r1 << rshift | (uint32_t)g1 << gshift | (uint32_t)b1 << bshift;
+ *rgba_pixels = rgba_result;
+
+ grayscale_pixels++;
+ rgba_pixels++;
+ }
+
+ grayscale += bitmap.w;
+ rgba += m_Canvas.w;
+ }
+}
+
+
+int32_t
+Renderer::WorldXToScreenX(RenderGroup& rgroup, float x)
+{
+ float xscreen = (x / rgroup.m_CameraWidth) * (float)rgroup.m_ScreenWidth;
+ return (int32_t)xscreen;
+}
+
+int32_t
+Renderer::WorldYToScreenY(RenderGroup& rgroup, float y)
+{
+ float yscreen = (y / rgroup.m_CameraHeight) * (float)rgroup.m_ScreenHeight;
+ return (int32_t)yscreen;
+}
+
diff --git a/src/renderer/Renderer.hpp b/src/renderer/Renderer.hpp
index a3e0f98..24d4b71 100644
--- a/src/renderer/Renderer.hpp
+++ b/src/renderer/Renderer.hpp
@@ -5,22 +5,37 @@
#include <SDL3/SDL.h>
#include <SDL3/SDL_video.h>
-#include <memory>
+struct RCanvas {
+ uint32_t rshift;
+ uint32_t gshift;
+ uint32_t bshift;
+ uint32_t ashift;
+ int32_t w;
+ int32_t h;
+ uint32_t *pixels;
+};
+
class Renderer {
public:
- enum Api {
- API_OPENGL
- };
+ Renderer(SDL_Window *window);
- Renderer() = default;
- static std::unique_ptr<Renderer> Select(Api api, SDL_Window *window);
+ bool Init();
+ void ResizeCanvas(int32_t w, int32_t h);
+ void Draw(RenderGroup &render_group);
-public:
- virtual ~Renderer() = 0;
- virtual bool Init() = 0;
- virtual void Draw(RenderGroup &render_group) = 0;
- virtual void Present() = 0;
+private:
+ void DrawRectangle(RenderGroup& rgroup, REntity_Rectangle& rect);
+ void DrawMonoBitmap(REntity_Bitmap& bitmap, Color color);
+
+ int32_t WorldXToScreenX(RenderGroup& rgroup, float x);
+ int32_t WorldYToScreenY(RenderGroup& rgroup, float y);
+
+
+private:
+ SDL_Window *m_Window;
+ uint32_t m_GlTexId;
+ RCanvas m_Canvas;
};
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;
-};
-
generated by cgit v1.2.3 (git 2.39.1) at 2025-11-04 02:08:34 +0000