Merge pull request #41219 from akien-mga/gles2-takes-holidays

Remove obsolete GLES2 backend code

1 files changed, 0 insertions, 116 deletions

diff --git a/drivers/gles2/shaders/ssao_blur.glsl b/drivers/gles2/shaders/ssao_blur.glsl
deleted file mode 100644
index f065cd74eb..0000000000
--- a/drivers/gles2/shaders/ssao_blur.glsl
+++ /dev/null
@@ -1,116 +0,0 @@
-/* clang-format off */
-[vertex]
-
-layout(location = 0) in highp vec4 vertex_attrib;
-/* clang-format on */
-
-void main() {
-	gl_Position = vertex_attrib;
-	gl_Position.z = 1.0;
-}
-
-/* clang-format off */
-[fragment]
-
-uniform sampler2D source_ssao; //texunit:0
-/* clang-format on */
-uniform sampler2D source_depth; //texunit:1
-uniform sampler2D source_normal; //texunit:3
-
-layout(location = 0) out float visibility;
-
-//////////////////////////////////////////////////////////////////////////////////////////////
-// Tunable Parameters:
-
-/** Increase to make depth edges crisper. Decrease to reduce flicker. */
-uniform float edge_sharpness;
-
-/** Step in 2-pixel intervals since we already blurred against neighbors in the
-	first AO pass.  This constant can be increased while R decreases to improve
-	performance at the expense of some dithering artifacts.
-
-	Morgan found that a scale of 3 left a 1-pixel checkerboard grid that was
-	unobjectionable after shading was applied but eliminated most temporal incoherence
-	from using small numbers of sample taps.
-	*/
-
-uniform int filter_scale;
-
-/** Filter radius in pixels. This will be multiplied by SCALE. */
-#define R (4)
-
-//////////////////////////////////////////////////////////////////////////////////////////////
-
-// Gaussian coefficients
-const float gaussian[R + 1] =
-		//float[](0.356642, 0.239400, 0.072410, 0.009869);
-		//float[](0.398943, 0.241971, 0.053991, 0.004432, 0.000134);  // stddev = 1.0
-		float[](0.153170, 0.144893, 0.122649, 0.092902, 0.062970); // stddev = 2.0
-//float[](0.111220, 0.107798, 0.098151, 0.083953, 0.067458, 0.050920, 0.036108); // stddev = 3.0
-
-/** (1, 0) or (0, 1)*/
-uniform ivec2 axis;
-
-uniform float camera_z_far;
-uniform float camera_z_near;
-
-uniform ivec2 screen_size;
-
-void main() {
-	ivec2 ssC = ivec2(gl_FragCoord.xy);
-
-	float depth = texelFetch(source_depth, ssC, 0).r;
-	//vec3 normal = texelFetch(source_normal,ssC,0).rgb * 2.0 - 1.0;
-
-	depth = depth * 2.0 - 1.0;
-	depth = 2.0 * camera_z_near * camera_z_far / (camera_z_far + camera_z_near - depth * (camera_z_far - camera_z_near));
-
-	float depth_divide = 1.0 / camera_z_far;
-
-	//depth *= depth_divide;
-
-	/*
-	if (depth > camera_z_far * 0.999) {
-		discard; //skybox
-	}
-	*/
-
-	float sum = texelFetch(source_ssao, ssC, 0).r;
-
-	// Base weight for depth falloff.  Increase this for more blurriness,
-	// decrease it for better edge discrimination
-	float BASE = gaussian[0];
-	float totalWeight = BASE;
-	sum *= totalWeight;
-
-	ivec2 clamp_limit = screen_size - ivec2(1);
-
-	for (int r = -R; r <= R; ++r) {
-		// We already handled the zero case above.  This loop should be unrolled and the static branch optimized out,
-		// so the IF statement has no runtime cost
-		if (r != 0) {
-			ivec2 ppos = ssC + axis * (r * filter_scale);
-			float value = texelFetch(source_ssao, clamp(ppos, ivec2(0), clamp_limit), 0).r;
-			ivec2 rpos = clamp(ppos, ivec2(0), clamp_limit);
-			float temp_depth = texelFetch(source_depth, rpos, 0).r;
-			//vec3 temp_normal = texelFetch(source_normal, rpos, 0).rgb * 2.0 - 1.0;
-
-			temp_depth = temp_depth * 2.0 - 1.0;
-			temp_depth = 2.0 * camera_z_near * camera_z_far / (camera_z_far + camera_z_near - temp_depth * (camera_z_far - camera_z_near));
-			//			temp_depth *= depth_divide;
-
-			// spatial domain: offset gaussian tap
-			float weight = 0.3 + gaussian[abs(r)];
-			//weight *= max(0.0,dot(temp_normal,normal));
-
-			// range domain (the "bilateral" weight). As depth difference increases, decrease weight.
-			weight *= max(0.0, 1.0 - edge_sharpness * abs(temp_depth - depth));
-
-			sum += value * weight;
-			totalWeight += weight;
-		}
-	}
-
-	const float epsilon = 0.0001;
-	visibility = sum / (totalWeight + epsilon);
-}