Fix OpenGL scaling and improve performance

AerofoilSDL/ShaderCode/CopyQuadP.cpp

@@ -0,0 +1,21 @@
+#include "Functions.h"
+
+#define GP_GL_SHADER_CODE_COPYQUADP_GLSL	"uniform sampler2D surfaceTexture;\n"\
+"varying vec4 texCoord;\n"\
+"\n"\
+"uniform vec4 dxdy_dimensions;\n"\
+"\n"\
+"vec3 SamplePixel(vec2 coord)\n"\
+"{\n"\
+"	return texture2D(surfaceTexture, (coord + vec2(0.5, 0.5)) / dxdy_dimensions.zw).rgb;\n"\
+"}\n"\
+"\n"\
+"void main()\n"\
+"{\n"\
+"	gl_FragColor = vec4(LinearToSRGB(texture2D(surfaceTexture, texCoord.xy).rgb), 1.0);\n"\
+"}\n"
+
+namespace GpBinarizedShaders
+{
+	const char *g_copyQuadP_GL2 = GP_GL_SHADER_CODE_PRECISION_PREFIX GP_GL_SHADER_CODE_FUNCTIONS_H GP_GL_SHADER_CODE_COPYQUADP_GLSL;
+}