add gpu blend modes, move primitive draw to frame man

Author: HeliumAnt

Source/Managers/FrameMan.cpp

@@ -25,6 +25,7 @@
 
 #include "GLCheck.h"
 #include "glad/gl.h"
+#include "Draw.h"
 
 #include "tracy/Tracy.hpp"
 #include "tracy/TracyOpenGL.hpp"
@@ -418,6 +419,59 @@ void FrameMan::ClearScreenText(int whichScreen) {
 	}
 }
 
+void FrameMan::SetBlendMode(DrawBlendMode blendMode) {
+	GLint invertLoc = rlGetLocationUniformCurrent("rteBlendInvert");
+	glUniform1i(invertLoc, 0);
+	switch (blendMode) {
+		case BlendTransparency: {
+			rlSetBlendMode(RL_BLEND_ALPHA);
+			break;
+		}
+		case BlendScreen: {
+			rlSetBlendMode(RL_BLEND_SCREEN);
+			break;
+		}
+		case BlendDifference: {
+			rlSetBlendMode(RL_BLEND_SUBTRACT_COLORS);
+			break;
+		}
+		case BlendMultiply: {
+			rlSetBlendMode(RL_BLEND_MULTIPLIED);
+			break;
+		}
+		case BlendBurn: {
+			rlSetBlendMode(RL_BLEND_BURN);
+			break;
+		}
+		case BlendDodge: {
+			rlSetBlendMode(RL_BLEND_DODGE);
+			break;
+		}
+		case BlendColor: {
+			rlSetBlendMode(RL_BLEND_HSL_COLOR);
+			break;
+		}
+		case BlendLuminance: {
+			rlSetBlendMode(RL_BLEND_HSL_LUMINOSITY);
+			break;
+		}
+		case BlendSaturation: {
+			rlSetBlendMode(RL_BLEND_HSL_SATURATION);
+			break;
+		}
+		case BlendInvert: {
+			rlSetBlendMode(RL_BLEND_ALPHA);
+			glUniform1i(invertLoc, 1);
+			break;
+		}
+		default: {
+			rlSetBlendMode(RL_BLEND_ALPHA);
+			RTEAssert(blendMode < BlendModeCount, "Unkown blend mode selected!");
+			break;
+		}
+	}
+}
+
 void FrameMan::SetColorTable(DrawBlendMode blendMode, std::array<int, 4> colorChannelBlendAmounts) {
 	RTEAssert(blendMode > DrawBlendMode::NoBlend && blendMode < DrawBlendMode::BlendModeCount, "Invalid DrawBlendMode or DrawBlendMode::NoBlend passed into FrameMan::SetColorTable. See DrawBlendMode enumeration for defined values.");
 
@@ -900,6 +954,9 @@ void FrameMan::Draw() {
 			g_SceneMan.Draw(drawScreen, drawScreenGUI, targetPos, true, true);
 		}
 
+
+		g_PrimitiveMan.DrawPrimitives(playerScreen, drawScreenGUI, targetPos);
+
 		// Get only the scene-relative post effects that affect this player's screen
 		if (pActivity) {
 			g_PostProcessMan.GetPostScreenEffectsWrapped(targetPos, drawScreen->w, drawScreen->h, screenRelativeEffects, pActivity->GetTeamOfPlayer(pActivity->PlayerOfScreen(playerScreen)));

Source/Managers/SceneMan.cpp

@@ -2753,8 +2753,6 @@ void SceneMan::Draw(BITMAP* targetBitmap, BITMAP* targetGUIBitmap, const Vector&
 				g_MovableMan.DrawHUD(targetGUIBitmap, targetPos, m_LastUpdatedScreen);
 			}
 
-			g_PrimitiveMan.DrawPrimitives(m_LastUpdatedScreen, targetGUIBitmap, targetPos);
-
 			if (shouldDrawHUD) {
 				g_ActivityMan.GetActivity()->DrawGUI(targetGUIBitmap, targetPos, m_LastUpdatedScreen);
 			}