- First commit to gitea

2026-02-12 10:51:02 +01:00
commit a16a5a4102
40 changed files with 10033 additions and 0 deletions
--- a/renderer.cpp
+++ b/renderer.cpp
@@ -0,0 +1,171 @@
+#include "renderer.h"
+
+#include <SDL2/SDL_opengl.h>
+
+namespace Renderer
+{
+	State currentState		{RENDER_DEPTH};
+	State stackedStates[10];
+	char stackPos			{0};
+
+	void DoLightOn();
+	void DoLightOff();
+	void DoFillOn();
+	void DoFillOff();
+	void DoDepthOn();
+	void DoDepthOff();
+	void DoBlendOn();
+	void DoBlendOff();
+	void DoTextureOn();
+	void DoTextureOff();
+
+	bool Light(const char state)
+	{
+		if (state == ON) {
+			DoLightOn();
+		} else if (state == OFF) {
+			DoLightOff();
+		}
+		return (currentState & RENDER_LIGHT) == RENDER_LIGHT;
+	}
+
+	bool Fill(const char state)
+	{
+		if (state == ON) {
+			DoFillOn();
+		} else if (state == OFF) {
+			DoFillOff();
+		}
+		return (currentState & RENDER_FILL) == RENDER_FILL;
+	}
+
+	bool Depth(const char state)
+	{
+		if (state == ON) {
+			DoDepthOn();
+		} else if (state == OFF) {
+			DoDepthOff();
+		}
+		return (currentState & RENDER_DEPTH) == RENDER_DEPTH;
+	}
+
+	bool Blend(const char state)
+	{
+		if (state == ON) {
+			DoBlendOn();
+		} else if (state == OFF) {
+			DoBlendOff();
+		}
+		return (currentState & RENDER_BLEND) == RENDER_BLEND;
+	}
+
+	bool Texture(const char state)
+	{
+		if (state == ON) {
+			DoTextureOn();
+		} else if (state == OFF) {
+			DoTextureOff();
+		}
+		return (currentState & RENDER_TEXTURE) == RENDER_TEXTURE;
+	}
+
+	void Push()
+	{
+		if (stackPos == 10) return;
+		stackedStates[stackPos++] = currentState;
+	}
+
+	void Pop()
+	{
+		if (stackPos == 0) return;
+		SetState(stackedStates[--stackPos]);
+	}
+
+	void SetState(const State& state)
+	{
+		if ((state & RENDER_LIGHT)   == RENDER_LIGHT)   DoLightOn();   else DoLightOff();
+		if ((state & RENDER_FILL)    == RENDER_FILL)    DoFillOn();    else DoFillOff();
+		if ((state & RENDER_BLEND)   == RENDER_BLEND)   DoBlendOn();   else DoBlendOff();
+		if ((state & RENDER_DEPTH)	 == RENDER_DEPTH)   DoDepthOn();   else DoDepthOff();
+		if ((state & RENDER_TEXTURE) == RENDER_TEXTURE) DoTextureOn(); else DoTextureOff();
+	}
+
+	State GetState()
+	{
+		return currentState;
+	}
+
+
+	void DoLightOn()
+	{
+		if ((currentState & RENDER_LIGHT) == RENDER_LIGHT) return;
+		glEnable(GL_LIGHTING);
+		glEnable(GL_COLOR_MATERIAL);
+		currentState |= RENDER_LIGHT;
+	}
+
+	void DoLightOff()
+	{
+		if ((currentState & RENDER_LIGHT) != RENDER_LIGHT) return;
+		glDisable(GL_LIGHTING);
+		glDisable(GL_COLOR_MATERIAL);
+		currentState &= uint8_t(~RENDER_LIGHT);
+	}
+
+	void DoFillOn()
+	{
+		if ((currentState & RENDER_FILL) == RENDER_FILL) return;
+		glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
+		currentState |= RENDER_FILL;
+	}
+
+	void DoFillOff()
+	{
+		if ((currentState & RENDER_FILL) != RENDER_FILL) return;
+		glPolygonMode(GL_FRONT_AND_BACK, GL_LINE);
+		currentState &= uint8_t(~RENDER_FILL);
+	}
+
+	void DoDepthOn()
+	{
+		if ((currentState & RENDER_DEPTH) == RENDER_DEPTH) return;
+		glEnable(GL_DEPTH_TEST);
+		currentState |= RENDER_DEPTH;
+	}
+
+	void DoDepthOff()
+	{
+		if ((currentState & RENDER_DEPTH) != RENDER_DEPTH) return;
+		glDisable(GL_DEPTH_TEST);
+		currentState &= uint8_t(~RENDER_DEPTH);
+	}
+
+	void DoBlendOn()
+	{
+		if ((currentState & RENDER_BLEND) == RENDER_BLEND) return;
+		glEnable(GL_BLEND);
+		currentState |= RENDER_BLEND;
+	}
+
+	void DoBlendOff()
+	{
+		if ((currentState & RENDER_BLEND) != RENDER_BLEND) return;
+		glDisable(GL_BLEND);
+		currentState &= uint8_t(~RENDER_BLEND);
+	}
+
+	void DoTextureOn()
+	{
+		if ((currentState & RENDER_TEXTURE) == RENDER_TEXTURE) return;
+		glEnable(GL_TEXTURE_2D);
+		currentState |= RENDER_TEXTURE;
+	}
+
+	void DoTextureOff()
+	{
+		if ((currentState & RENDER_TEXTURE) != RENDER_TEXTURE) return;
+		glDisable(GL_TEXTURE_2D);
+		currentState &= uint8_t(~RENDER_TEXTURE);
+	}
+
+}