diff options
Diffstat (limited to 'drivers/gles3/shaders/effect_blur.glsl')
| -rw-r--r-- | drivers/gles3/shaders/effect_blur.glsl | 178 |
1 files changed, 82 insertions, 96 deletions
diff --git a/drivers/gles3/shaders/effect_blur.glsl b/drivers/gles3/shaders/effect_blur.glsl index c8567b4d53..3872ee8d1d 100644 --- a/drivers/gles3/shaders/effect_blur.glsl +++ b/drivers/gles3/shaders/effect_blur.glsl @@ -1,8 +1,7 @@ [vertex] - -layout(location=0) in highp vec4 vertex_attrib; -layout(location=4) in vec2 uv_in; +layout(location = 0) in highp vec4 vertex_attrib; +layout(location = 4) in vec2 uv_in; out vec2 uv_interp; @@ -39,7 +38,6 @@ uniform sampler2D source_ssao; //texunit:1 uniform float lod; uniform vec2 pixel_size; - layout(location = 0) out vec4 frag_color; #ifdef SSAO_MERGE @@ -48,31 +46,31 @@ uniform vec4 ssao_color; #endif -#if defined (GLOW_GAUSSIAN_HORIZONTAL) || defined(GLOW_GAUSSIAN_VERTICAL) +#if defined(GLOW_GAUSSIAN_HORIZONTAL) || defined(GLOW_GAUSSIAN_VERTICAL) uniform float glow_strength; #endif -#if defined(DOF_FAR_BLUR) || defined (DOF_NEAR_BLUR) +#if defined(DOF_FAR_BLUR) || defined(DOF_NEAR_BLUR) #ifdef DOF_QUALITY_LOW -const int dof_kernel_size=5; -const int dof_kernel_from=2; -const float dof_kernel[5] = float[] (0.153388,0.221461,0.250301,0.221461,0.153388); +const int dof_kernel_size = 5; +const int dof_kernel_from = 2; +const float dof_kernel[5] = float[](0.153388, 0.221461, 0.250301, 0.221461, 0.153388); #endif #ifdef DOF_QUALITY_MEDIUM -const int dof_kernel_size=11; -const int dof_kernel_from=5; -const float dof_kernel[11] = float[] (0.055037,0.072806,0.090506,0.105726,0.116061,0.119726,0.116061,0.105726,0.090506,0.072806,0.055037); +const int dof_kernel_size = 11; +const int dof_kernel_from = 5; +const float dof_kernel[11] = float[](0.055037, 0.072806, 0.090506, 0.105726, 0.116061, 0.119726, 0.116061, 0.105726, 0.090506, 0.072806, 0.055037); #endif #ifdef DOF_QUALITY_HIGH -const int dof_kernel_size=21; -const int dof_kernel_from=10; -const float dof_kernel[21] = float[] (0.028174,0.032676,0.037311,0.041944,0.046421,0.050582,0.054261,0.057307,0.059587,0.060998,0.061476,0.060998,0.059587,0.057307,0.054261,0.050582,0.046421,0.041944,0.037311,0.032676,0.028174); +const int dof_kernel_size = 21; +const int dof_kernel_from = 10; +const float dof_kernel[21] = float[](0.028174, 0.032676, 0.037311, 0.041944, 0.046421, 0.050582, 0.054261, 0.057307, 0.059587, 0.060998, 0.061476, 0.060998, 0.059587, 0.057307, 0.054261, 0.050582, 0.046421, 0.041944, 0.037311, 0.032676, 0.028174); #endif uniform sampler2D dof_source_depth; //texunit:1 @@ -88,7 +86,6 @@ uniform sampler2D source_dof_original; //texunit:2 #endif - #ifdef GLOW_FIRST_PASS uniform float exposure; @@ -112,53 +109,51 @@ uniform float camera_z_near; void main() { - - #ifdef GAUSSIAN_HORIZONTAL vec2 pix_size = pixel_size; - pix_size*=0.5; //reading from larger buffer, so use more samples - vec4 color =textureLod( source_color, uv_interp+vec2( 0.0, 0.0)*pix_size,lod )*0.214607; - color+=textureLod( source_color, uv_interp+vec2( 1.0, 0.0)*pix_size,lod )*0.189879; - color+=textureLod( source_color, uv_interp+vec2( 2.0, 0.0)*pix_size,lod )*0.157305; - color+=textureLod( source_color, uv_interp+vec2( 3.0, 0.0)*pix_size,lod )*0.071303; - color+=textureLod( source_color, uv_interp+vec2(-1.0, 0.0)*pix_size,lod )*0.189879; - color+=textureLod( source_color, uv_interp+vec2(-2.0, 0.0)*pix_size,lod )*0.157305; - color+=textureLod( source_color, uv_interp+vec2(-3.0, 0.0)*pix_size,lod )*0.071303; + pix_size *= 0.5; //reading from larger buffer, so use more samples + vec4 color = textureLod(source_color, uv_interp + vec2(0.0, 0.0) * pix_size, lod) * 0.214607; + color += textureLod(source_color, uv_interp + vec2(1.0, 0.0) * pix_size, lod) * 0.189879; + color += textureLod(source_color, uv_interp + vec2(2.0, 0.0) * pix_size, lod) * 0.157305; + color += textureLod(source_color, uv_interp + vec2(3.0, 0.0) * pix_size, lod) * 0.071303; + color += textureLod(source_color, uv_interp + vec2(-1.0, 0.0) * pix_size, lod) * 0.189879; + color += textureLod(source_color, uv_interp + vec2(-2.0, 0.0) * pix_size, lod) * 0.157305; + color += textureLod(source_color, uv_interp + vec2(-3.0, 0.0) * pix_size, lod) * 0.071303; frag_color = color; #endif #ifdef GAUSSIAN_VERTICAL - vec4 color =textureLod( source_color, uv_interp+vec2( 0.0, 0.0)*pixel_size,lod )*0.38774; - color+=textureLod( source_color, uv_interp+vec2( 0.0, 1.0)*pixel_size,lod )*0.24477; - color+=textureLod( source_color, uv_interp+vec2( 0.0, 2.0)*pixel_size,lod )*0.06136; - color+=textureLod( source_color, uv_interp+vec2( 0.0,-1.0)*pixel_size,lod )*0.24477; - color+=textureLod( source_color, uv_interp+vec2( 0.0,-2.0)*pixel_size,lod )*0.06136; + vec4 color = textureLod(source_color, uv_interp + vec2(0.0, 0.0) * pixel_size, lod) * 0.38774; + color += textureLod(source_color, uv_interp + vec2(0.0, 1.0) * pixel_size, lod) * 0.24477; + color += textureLod(source_color, uv_interp + vec2(0.0, 2.0) * pixel_size, lod) * 0.06136; + color += textureLod(source_color, uv_interp + vec2(0.0, -1.0) * pixel_size, lod) * 0.24477; + color += textureLod(source_color, uv_interp + vec2(0.0, -2.0) * pixel_size, lod) * 0.06136; frag_color = color; #endif -//glow uses larger sigma for a more rounded blur effect + //glow uses larger sigma for a more rounded blur effect #ifdef GLOW_GAUSSIAN_HORIZONTAL vec2 pix_size = pixel_size; - pix_size*=0.5; //reading from larger buffer, so use more samples - vec4 color =textureLod( source_color, uv_interp+vec2( 0.0, 0.0)*pix_size,lod )*0.174938; - color+=textureLod( source_color, uv_interp+vec2( 1.0, 0.0)*pix_size,lod )*0.165569; - color+=textureLod( source_color, uv_interp+vec2( 2.0, 0.0)*pix_size,lod )*0.140367; - color+=textureLod( source_color, uv_interp+vec2( 3.0, 0.0)*pix_size,lod )*0.106595; - color+=textureLod( source_color, uv_interp+vec2(-1.0, 0.0)*pix_size,lod )*0.165569; - color+=textureLod( source_color, uv_interp+vec2(-2.0, 0.0)*pix_size,lod )*0.140367; - color+=textureLod( source_color, uv_interp+vec2(-3.0, 0.0)*pix_size,lod )*0.106595; - color*=glow_strength; + pix_size *= 0.5; //reading from larger buffer, so use more samples + vec4 color = textureLod(source_color, uv_interp + vec2(0.0, 0.0) * pix_size, lod) * 0.174938; + color += textureLod(source_color, uv_interp + vec2(1.0, 0.0) * pix_size, lod) * 0.165569; + color += textureLod(source_color, uv_interp + vec2(2.0, 0.0) * pix_size, lod) * 0.140367; + color += textureLod(source_color, uv_interp + vec2(3.0, 0.0) * pix_size, lod) * 0.106595; + color += textureLod(source_color, uv_interp + vec2(-1.0, 0.0) * pix_size, lod) * 0.165569; + color += textureLod(source_color, uv_interp + vec2(-2.0, 0.0) * pix_size, lod) * 0.140367; + color += textureLod(source_color, uv_interp + vec2(-3.0, 0.0) * pix_size, lod) * 0.106595; + color *= glow_strength; frag_color = color; #endif #ifdef GLOW_GAUSSIAN_VERTICAL - vec4 color =textureLod( source_color, uv_interp+vec2(0.0, 0.0)*pixel_size,lod )*0.288713; - color+=textureLod( source_color, uv_interp+vec2(0.0, 1.0)*pixel_size,lod )*0.233062; - color+=textureLod( source_color, uv_interp+vec2(0.0, 2.0)*pixel_size,lod )*0.122581; - color+=textureLod( source_color, uv_interp+vec2(0.0,-1.0)*pixel_size,lod )*0.233062; - color+=textureLod( source_color, uv_interp+vec2(0.0,-2.0)*pixel_size,lod )*0.122581; - color*=glow_strength; + vec4 color = textureLod(source_color, uv_interp + vec2(0.0, 0.0) * pixel_size, lod) * 0.288713; + color += textureLod(source_color, uv_interp + vec2(0.0, 1.0) * pixel_size, lod) * 0.233062; + color += textureLod(source_color, uv_interp + vec2(0.0, 2.0) * pixel_size, lod) * 0.122581; + color += textureLod(source_color, uv_interp + vec2(0.0, -1.0) * pixel_size, lod) * 0.233062; + color += textureLod(source_color, uv_interp + vec2(0.0, -2.0) * pixel_size, lod) * 0.122581; + color *= glow_strength; frag_color = color; #endif @@ -166,47 +161,45 @@ void main() { vec4 color_accum = vec4(0.0); - float depth = textureLod( dof_source_depth, uv_interp, 0.0).r; + float depth = textureLod(dof_source_depth, uv_interp, 0.0).r; depth = depth * 2.0 - 1.0; #ifdef USE_ORTHOGONAL_PROJECTION - depth = ((depth + (camera_z_far + camera_z_near)/(camera_z_far - camera_z_near)) * (camera_z_far - camera_z_near))/2.0; + depth = ((depth + (camera_z_far + camera_z_near) / (camera_z_far - camera_z_near)) * (camera_z_far - camera_z_near)) / 2.0; #else depth = 2.0 * camera_z_near * camera_z_far / (camera_z_far + camera_z_near - depth * (camera_z_far - camera_z_near)); #endif - float amount = smoothstep(dof_begin,dof_end,depth); - float k_accum=0.0; + float amount = smoothstep(dof_begin, dof_end, depth); + float k_accum = 0.0; - for(int i=0;i<dof_kernel_size;i++) { + for (int i = 0; i < dof_kernel_size; i++) { - int int_ofs = i-dof_kernel_from; + int int_ofs = i - dof_kernel_from; vec2 tap_uv = uv_interp + dof_dir * float(int_ofs) * amount * dof_radius; float tap_k = dof_kernel[i]; - float tap_depth = texture( dof_source_depth, tap_uv, 0.0).r; + float tap_depth = texture(dof_source_depth, tap_uv, 0.0).r; tap_depth = tap_depth * 2.0 - 1.0; #ifdef USE_ORTHOGONAL_PROJECTION - tap_depth = ((tap_depth + (camera_z_far + camera_z_near)/(camera_z_far - camera_z_near)) * (camera_z_far - camera_z_near))/2.0; + tap_depth = ((tap_depth + (camera_z_far + camera_z_near) / (camera_z_far - camera_z_near)) * (camera_z_far - camera_z_near)) / 2.0; #else tap_depth = 2.0 * camera_z_near * camera_z_far / (camera_z_far + camera_z_near - tap_depth * (camera_z_far - camera_z_near)); #endif - float tap_amount = mix(smoothstep(dof_begin,dof_end,tap_depth),1.0,int_ofs==0); - tap_amount*=tap_amount*tap_amount; //prevent undesired glow effect - - vec4 tap_color = textureLod( source_color, tap_uv, 0.0) * tap_k; - - k_accum+=tap_k*tap_amount; - color_accum+=tap_color*tap_amount; + float tap_amount = mix(smoothstep(dof_begin, dof_end, tap_depth), 1.0, int_ofs == 0); + tap_amount *= tap_amount * tap_amount; //prevent undesired glow effect + vec4 tap_color = textureLod(source_color, tap_uv, 0.0) * tap_k; + k_accum += tap_k * tap_amount; + color_accum += tap_color * tap_amount; } - if (k_accum>0.0) { - color_accum/=k_accum; + if (k_accum > 0.0) { + color_accum /= k_accum; } - frag_color = color_accum;///k_accum; + frag_color = color_accum; ///k_accum; #endif @@ -214,47 +207,45 @@ void main() { vec4 color_accum = vec4(0.0); - float max_accum=0.0; + float max_accum = 0.0; - for(int i=0;i<dof_kernel_size;i++) { + for (int i = 0; i < dof_kernel_size; i++) { - int int_ofs = i-dof_kernel_from; + int int_ofs = i - dof_kernel_from; vec2 tap_uv = uv_interp + dof_dir * float(int_ofs) * dof_radius; - float ofs_influence = max(0.0,1.0-float(abs(int_ofs))/float(dof_kernel_from)); + float ofs_influence = max(0.0, 1.0 - float(abs(int_ofs)) / float(dof_kernel_from)); float tap_k = dof_kernel[i]; - vec4 tap_color = textureLod( source_color, tap_uv, 0.0); + vec4 tap_color = textureLod(source_color, tap_uv, 0.0); - float tap_depth = texture( dof_source_depth, tap_uv, 0.0).r; + float tap_depth = texture(dof_source_depth, tap_uv, 0.0).r; tap_depth = tap_depth * 2.0 - 1.0; -#ifdef USE_ORTHOGONAL_PROJECTION - tap_depth = ((tap_depth + (camera_z_far + camera_z_near)/(camera_z_far - camera_z_near)) * (camera_z_far - camera_z_near))/2.0; +#ifdef USE_ORTHOGONAL_PROJECTION + tap_depth = ((tap_depth + (camera_z_far + camera_z_near) / (camera_z_far - camera_z_near)) * (camera_z_far - camera_z_near)) / 2.0; #else tap_depth = 2.0 * camera_z_near * camera_z_far / (camera_z_far + camera_z_near - tap_depth * (camera_z_far - camera_z_near)); #endif - float tap_amount = 1.0-smoothstep(dof_end,dof_begin,tap_depth); - tap_amount*=tap_amount*tap_amount; //prevent undesired glow effect + float tap_amount = 1.0 - smoothstep(dof_end, dof_begin, tap_depth); + tap_amount *= tap_amount * tap_amount; //prevent undesired glow effect #ifdef DOF_NEAR_FIRST_TAP - tap_color.a= 1.0-smoothstep(dof_end,dof_begin,tap_depth); + tap_color.a = 1.0 - smoothstep(dof_end, dof_begin, tap_depth); #endif - max_accum=max(max_accum,tap_amount*ofs_influence); - - color_accum+=tap_color*tap_k; + max_accum = max(max_accum, tap_amount * ofs_influence); + color_accum += tap_color * tap_k; } - color_accum.a=max(color_accum.a,sqrt(max_accum)); - + color_accum.a = max(color_accum.a, sqrt(max_accum)); #ifdef DOF_NEAR_BLUR_MERGE - vec4 original = textureLod( source_dof_original, uv_interp, 0.0); - color_accum = mix(original,color_accum,color_accum.a); + vec4 original = textureLod(source_dof_original, uv_interp, 0.0); + color_accum = mix(original, color_accum, color_accum.a); #endif @@ -265,37 +256,32 @@ void main() { #endif - - #ifdef GLOW_FIRST_PASS #ifdef GLOW_USE_AUTO_EXPOSURE - frag_color/=texelFetch(source_auto_exposure,ivec2(0,0),0).r/auto_exposure_grey; + frag_color /= texelFetch(source_auto_exposure, ivec2(0, 0), 0).r / auto_exposure_grey; #endif - frag_color*=exposure; + frag_color *= exposure; - float luminance = max(frag_color.r,max(frag_color.g,frag_color.b)); - float feedback = max( smoothstep(glow_hdr_threshold,glow_hdr_threshold+glow_hdr_scale,luminance), glow_bloom ); + float luminance = max(frag_color.r, max(frag_color.g, frag_color.b)); + float feedback = max(smoothstep(glow_hdr_threshold, glow_hdr_threshold + glow_hdr_scale, luminance), glow_bloom); frag_color *= feedback; #endif - #ifdef SIMPLE_COPY - vec4 color =textureLod( source_color, uv_interp,0.0); + vec4 color = textureLod(source_color, uv_interp, 0.0); frag_color = color; #endif #ifdef SSAO_MERGE - vec4 color =textureLod( source_color, uv_interp,0.0); - float ssao =textureLod( source_ssao, uv_interp,0.0).r; + vec4 color = textureLod(source_color, uv_interp, 0.0); + float ssao = textureLod(source_ssao, uv_interp, 0.0).r; - frag_color = vec4( mix(color.rgb,color.rgb*mix(ssao_color.rgb,vec3(1.0),ssao),color.a), 1.0 ); + frag_color = vec4(mix(color.rgb, color.rgb * mix(ssao_color.rgb, vec3(1.0), ssao), color.a), 1.0); #endif - - } |