Graphics Preferences: Anti-aliasing + FPS (#13538)

* Expose Antialiasing velues

Expose Antialiasing multipliers.
Default to 4 as current implementation but enables the user to disable it to improve performante or increase sampling to improve quality.

* FXAA

* Improve descriptions

* Require restart when MSAA setting changes

Detect changes to the OpenGL MSAA (multisample anti-aliasing) preference when opening Preferences and prompt the user to restart the application to apply the change. Adds a constant key for the MSAA setting, stores the previous value, checks for changes (similar to the existing FXAA handling), and shows a warning dialog explaining the restart will close the current project without saving. If the user accepts, recreate_GUI is invoked to apply the MSAA change immediately.

* Revert "Require restart when MSAA setting changes"

This reverts commit dde134d346c3849598c91d025d2faed1b51c8a22.

* Menu and FPS options

* Fix FPS limiter and remove VSYNC

* Grouped FPS settings and mode up rigth fps counter

---------

Co-authored-by: Noisyfox <timemanager.rick@gmail.com>

resources/shaders/110/fxaa.fs

@@ -0,0 +1,50 @@
+#version 110
+
+uniform sampler2D uniform_texture;
+uniform vec2 inv_tex_size;
+
+varying vec2 tex_coord;
+
+void main()
+{
+    vec3 rgbNW = texture2D(uniform_texture, tex_coord + vec2(-1.0, -1.0) * inv_tex_size).rgb;
+    vec3 rgbNE = texture2D(uniform_texture, tex_coord + vec2(1.0, -1.0) * inv_tex_size).rgb;
+    vec3 rgbSW = texture2D(uniform_texture, tex_coord + vec2(-1.0, 1.0) * inv_tex_size).rgb;
+    vec3 rgbSE = texture2D(uniform_texture, tex_coord + vec2(1.0, 1.0) * inv_tex_size).rgb;
+    vec3 rgbM  = texture2D(uniform_texture, tex_coord).rgb;
+
+    vec3 luma_coeff = vec3(0.299, 0.587, 0.114);
+    float lumaNW = dot(rgbNW, luma_coeff);
+    float lumaNE = dot(rgbNE, luma_coeff);
+    float lumaSW = dot(rgbSW, luma_coeff);
+    float lumaSE = dot(rgbSE, luma_coeff);
+    float lumaM  = dot(rgbM, luma_coeff);
+
+    float lumaMin = min(lumaM, min(min(lumaNW, lumaNE), min(lumaSW, lumaSE)));
+    float lumaMax = max(lumaM, max(max(lumaNW, lumaNE), max(lumaSW, lumaSE)));
+
+    vec2 dir;
+    dir.x = -((lumaNW + lumaNE) - (lumaSW + lumaSE));
+    dir.y = ((lumaNW + lumaSW) - (lumaNE + lumaSE));
+
+    const float FXAA_REDUCE_MIN = 1.0 / 128.0;
+    const float FXAA_REDUCE_MUL = 1.0 / 8.0;
+    const float FXAA_SPAN_MAX = 8.0;
+
+    float dirReduce = max((lumaNW + lumaNE + lumaSW + lumaSE) * (0.25 * FXAA_REDUCE_MUL), FXAA_REDUCE_MIN);
+    float rcpDirMin = 1.0 / (min(abs(dir.x), abs(dir.y)) + dirReduce);
+    dir = min(vec2(FXAA_SPAN_MAX), max(vec2(-FXAA_SPAN_MAX), dir * rcpDirMin)) * inv_tex_size;
+
+    vec3 rgbA = 0.5 * (
+        texture2D(uniform_texture, tex_coord + dir * (1.0 / 3.0 - 0.5)).rgb +
+        texture2D(uniform_texture, tex_coord + dir * (2.0 / 3.0 - 0.5)).rgb
+    );
+
+    vec3 rgbB = rgbA * 0.5 + 0.25 * (
+        texture2D(uniform_texture, tex_coord + dir * -0.5).rgb +
+        texture2D(uniform_texture, tex_coord + dir * 0.5).rgb
+    );
+
+    float lumaB = dot(rgbB, luma_coeff);
+    gl_FragColor = (lumaB < lumaMin || lumaB > lumaMax) ? vec4(rgbA, 1.0) : vec4(rgbB, 1.0);
+}

resources/shaders/110/fxaa.vs

@@ -0,0 +1,15 @@
+#version 110
+
+uniform mat4 view_model_matrix;
+uniform mat4 projection_matrix;
+
+attribute vec3 v_position;
+attribute vec2 v_tex_coord;
+
+varying vec2 tex_coord;
+
+void main()
+{
+    tex_coord = v_tex_coord;
+    gl_Position = projection_matrix * view_model_matrix * vec4(v_position, 1.0);
+}

resources/shaders/140/fxaa.fs

@@ -0,0 +1,52 @@
+#version 140
+
+uniform sampler2D uniform_texture;
+uniform vec2 inv_tex_size;
+
+in vec2 tex_coord;
+
+out vec4 out_color;
+
+void main()
+{
+    vec3 rgbNW = texture(uniform_texture, tex_coord + vec2(-1.0, -1.0) * inv_tex_size).rgb;
+    vec3 rgbNE = texture(uniform_texture, tex_coord + vec2(1.0, -1.0) * inv_tex_size).rgb;
+    vec3 rgbSW = texture(uniform_texture, tex_coord + vec2(-1.0, 1.0) * inv_tex_size).rgb;
+    vec3 rgbSE = texture(uniform_texture, tex_coord + vec2(1.0, 1.0) * inv_tex_size).rgb;
+    vec3 rgbM  = texture(uniform_texture, tex_coord).rgb;
+
+    vec3 luma_coeff = vec3(0.299, 0.587, 0.114);
+    float lumaNW = dot(rgbNW, luma_coeff);
+    float lumaNE = dot(rgbNE, luma_coeff);
+    float lumaSW = dot(rgbSW, luma_coeff);
+    float lumaSE = dot(rgbSE, luma_coeff);
+    float lumaM  = dot(rgbM, luma_coeff);
+
+    float lumaMin = min(lumaM, min(min(lumaNW, lumaNE), min(lumaSW, lumaSE)));
+    float lumaMax = max(lumaM, max(max(lumaNW, lumaNE), max(lumaSW, lumaSE)));
+
+    vec2 dir;
+    dir.x = -((lumaNW + lumaNE) - (lumaSW + lumaSE));
+    dir.y = ((lumaNW + lumaSW) - (lumaNE + lumaSE));
+
+    const float FXAA_REDUCE_MIN = 1.0 / 128.0;
+    const float FXAA_REDUCE_MUL = 1.0 / 8.0;
+    const float FXAA_SPAN_MAX = 8.0;
+
+    float dirReduce = max((lumaNW + lumaNE + lumaSW + lumaSE) * (0.25 * FXAA_REDUCE_MUL), FXAA_REDUCE_MIN);
+    float rcpDirMin = 1.0 / (min(abs(dir.x), abs(dir.y)) + dirReduce);
+    dir = min(vec2(FXAA_SPAN_MAX), max(vec2(-FXAA_SPAN_MAX), dir * rcpDirMin)) * inv_tex_size;
+
+    vec3 rgbA = 0.5 * (
+        texture(uniform_texture, tex_coord + dir * (1.0 / 3.0 - 0.5)).rgb +
+        texture(uniform_texture, tex_coord + dir * (2.0 / 3.0 - 0.5)).rgb
+    );
+
+    vec3 rgbB = rgbA * 0.5 + 0.25 * (
+        texture(uniform_texture, tex_coord + dir * -0.5).rgb +
+        texture(uniform_texture, tex_coord + dir * 0.5).rgb
+    );
+
+    float lumaB = dot(rgbB, luma_coeff);
+    out_color = (lumaB < lumaMin || lumaB > lumaMax) ? vec4(rgbA, 1.0) : vec4(rgbB, 1.0);
+}

resources/shaders/140/fxaa.vs

@@ -0,0 +1,15 @@
+#version 140
+
+uniform mat4 view_model_matrix;
+uniform mat4 projection_matrix;
+
+in vec3 v_position;
+in vec2 v_tex_coord;
+
+out vec2 tex_coord;
+
+void main()
+{
+    tex_coord = v_tex_coord;
+    gl_Position = projection_matrix * view_model_matrix * vec4(v_position, 1.0);
+}