diff options
Diffstat (limited to 'drivers/gles2/shaders/effect_blur.glsl')
| -rw-r--r-- | drivers/gles2/shaders/effect_blur.glsl | 244 |
1 files changed, 132 insertions, 112 deletions
diff --git a/drivers/gles2/shaders/effect_blur.glsl b/drivers/gles2/shaders/effect_blur.glsl index df79e89931..b28d78a6ca 100644 --- a/drivers/gles2/shaders/effect_blur.glsl +++ b/drivers/gles2/shaders/effect_blur.glsl @@ -1,11 +1,20 @@ /* clang-format off */ [vertex] -layout(location = 0) in highp vec4 vertex_attrib; +#ifdef USE_GLES_OVER_GL +#define lowp +#define mediump +#define highp +#else +precision highp float; +precision highp int; +#endif + +attribute vec2 vertex_attrib; // attrib:0 /* clang-format on */ -layout(location = 4) in vec2 uv_in; +attribute vec2 uv_in; // attrib:4 -out vec2 uv_interp; +varying vec2 uv_interp; #ifdef USE_BLUR_SECTION @@ -16,7 +25,7 @@ uniform vec4 blur_section; void main() { uv_interp = uv_in; - gl_Position = vertex_attrib; + gl_Position = vec4(vertex_attrib, 0.0, 1.0); #ifdef USE_BLUR_SECTION uv_interp = blur_section.xy + uv_interp * blur_section.zw; @@ -27,29 +36,46 @@ void main() { /* clang-format off */ [fragment] -#if !defined(GLES_OVER_GL) +// texture2DLodEXT and textureCubeLodEXT are fragment shader specific. +// Do not copy these defines in the vertex section. +#ifndef USE_GLES_OVER_GL +#ifdef GL_EXT_shader_texture_lod +#extension GL_EXT_shader_texture_lod : enable +#define texture2DLod(img, coord, lod) texture2DLodEXT(img, coord, lod) +#define textureCubeLod(img, coord, lod) textureCubeLodEXT(img, coord, lod) +#endif +#endif // !USE_GLES_OVER_GL + +#ifdef GL_ARB_shader_texture_lod +#extension GL_ARB_shader_texture_lod : enable +#endif + +#if !defined(GL_EXT_shader_texture_lod) && !defined(GL_ARB_shader_texture_lod) +#define texture2DLod(img, coord, lod) texture2D(img, coord, lod) +#define textureCubeLod(img, coord, lod) textureCube(img, coord, lod) +#endif + +#ifdef USE_GLES_OVER_GL +#define lowp +#define mediump +#define highp +#else +#if defined(USE_HIGHP_PRECISION) +precision highp float; +precision highp int; +#else precision mediump float; +precision mediump int; +#endif #endif -in vec2 uv_interp; +varying vec2 uv_interp; /* clang-format on */ uniform sampler2D source_color; //texunit:0 -#ifdef SSAO_MERGE -uniform sampler2D source_ssao; //texunit:1 -#endif - uniform float lod; uniform vec2 pixel_size; -layout(location = 0) out vec4 frag_color; - -#ifdef SSAO_MERGE - -uniform vec4 ssao_color; - -#endif - #if defined(GLOW_GAUSSIAN_HORIZONTAL) || defined(GLOW_GAUSSIAN_VERTICAL) uniform float glow_strength; @@ -58,6 +84,7 @@ uniform float glow_strength; #if defined(DOF_FAR_BLUR) || defined(DOF_NEAR_BLUR) +#ifdef USE_GLES_OVER_GL #ifdef DOF_QUALITY_LOW const int dof_kernel_size = 5; const int dof_kernel_from = 2; @@ -76,6 +103,7 @@ 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 +#endif uniform sampler2D dof_source_depth; //texunit:1 uniform float dof_begin; @@ -83,24 +111,11 @@ uniform float dof_end; uniform vec2 dof_dir; uniform float dof_radius; -#ifdef DOF_NEAR_BLUR_MERGE - -uniform sampler2D source_dof_original; //texunit:2 -#endif - #endif #ifdef GLOW_FIRST_PASS -uniform float exposure; -uniform float white; - -#ifdef GLOW_USE_AUTO_EXPOSURE - -uniform highp sampler2D source_auto_exposure; //texunit:1 -uniform highp float auto_exposure_grey; - -#endif +uniform highp float luminance_cap; uniform float glow_bloom; uniform float glow_hdr_threshold; @@ -113,60 +128,95 @@ uniform float camera_z_near; void main() { -#ifdef GAUSSIAN_HORIZONTAL +#ifdef GLOW_GAUSSIAN_HORIZONTAL vec2 pix_size = pixel_size; pix_size *= 0.5; //reading from larger buffer, so use more samples - // sigma 2 - 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) * 0.131514; - 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) * 0.131514; - color += textureLod(source_color, uv_interp + vec2(-3.0, 0.0) * pix_size, lod) * 0.071303; - frag_color = color; + vec4 color = texture2DLod(source_color, uv_interp + vec2(0.0, 0.0) * pix_size, lod) * 0.174938; + color += texture2DLod(source_color, uv_interp + vec2(1.0, 0.0) * pix_size, lod) * 0.165569; + color += texture2DLod(source_color, uv_interp + vec2(2.0, 0.0) * pix_size, lod) * 0.140367; + color += texture2DLod(source_color, uv_interp + vec2(3.0, 0.0) * pix_size, lod) * 0.106595; + color += texture2DLod(source_color, uv_interp + vec2(-1.0, 0.0) * pix_size, lod) * 0.165569; + color += texture2DLod(source_color, uv_interp + vec2(-2.0, 0.0) * pix_size, lod) * 0.140367; + color += texture2DLod(source_color, uv_interp + vec2(-3.0, 0.0) * pix_size, lod) * 0.106595; + color *= glow_strength; + gl_FragColor = 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; - frag_color = color; +#ifdef GLOW_GAUSSIAN_VERTICAL + vec4 color = texture2DLod(source_color, uv_interp + vec2(0.0, 0.0) * pixel_size, lod) * 0.288713; + color += texture2DLod(source_color, uv_interp + vec2(0.0, 1.0) * pixel_size, lod) * 0.233062; + color += texture2DLod(source_color, uv_interp + vec2(0.0, 2.0) * pixel_size, lod) * 0.122581; + color += texture2DLod(source_color, uv_interp + vec2(0.0, -1.0) * pixel_size, lod) * 0.233062; + color += texture2DLod(source_color, uv_interp + vec2(0.0, -2.0) * pixel_size, lod) * 0.122581; + color *= glow_strength; + gl_FragColor = color; #endif - //glow uses larger sigma for a more rounded blur effect +#ifndef USE_GLES_OVER_GL +#if defined(DOF_FAR_BLUR) || defined(DOF_NEAR_BLUR) -#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; - frag_color = color; +#ifdef DOF_QUALITY_LOW + const int dof_kernel_size = 5; + const int dof_kernel_from = 2; + float dof_kernel[5]; + dof_kernel[0] = 0.153388; + dof_kernel[1] = 0.221461; + dof_kernel[2] = 0.250301; + dof_kernel[3] = 0.221461; + dof_kernel[4] = 0.153388; #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; - frag_color = color; +#ifdef DOF_QUALITY_MEDIUM + const int dof_kernel_size = 11; + const int dof_kernel_from = 5; + float dof_kernel[11]; + dof_kernel[0] = 0.055037; + dof_kernel[1] = 0.072806; + dof_kernel[2] = 0.090506; + dof_kernel[3] = 0.105726; + dof_kernel[4] = 0.116061; + dof_kernel[5] = 0.119726; + dof_kernel[6] = 0.116061; + dof_kernel[7] = 0.105726; + dof_kernel[8] = 0.090506; + dof_kernel[9] = 0.072806; + dof_kernel[10] = 0.055037; #endif +#ifdef DOF_QUALITY_HIGH + const int dof_kernel_size = 21; + const int dof_kernel_from = 10; + float dof_kernel[21]; + dof_kernel[0] = 0.028174; + dof_kernel[1] = 0.032676; + dof_kernel[2] = 0.037311; + dof_kernel[3] = 0.041944; + dof_kernel[4] = 0.046421; + dof_kernel[5] = 0.050582; + dof_kernel[6] = 0.054261; + dof_kernel[7] = 0.057307; + dof_kernel[8] = 0.059587; + dof_kernel[9] = 0.060998; + dof_kernel[10] = 0.061476; + dof_kernel[11] = 0.060998; + dof_kernel[12] = 0.059587; + dof_kernel[13] = 0.057307; + dof_kernel[14] = 0.054261; + dof_kernel[15] = 0.050582; + dof_kernel[16] = 0.046421; + dof_kernel[17] = 0.041944; + dof_kernel[18] = 0.037311; + dof_kernel[19] = 0.032676; + dof_kernel[20] = 0.028174; +#endif +#endif +#endif //!USE_GLES_OVER_GL + #ifdef DOF_FAR_BLUR vec4 color_accum = vec4(0.0); - float depth = textureLod(dof_source_depth, uv_interp, 0.0).r; + float depth = texture2DLod(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; @@ -184,17 +234,17 @@ void main() { float tap_k = dof_kernel[i]; - float tap_depth = texture(dof_source_depth, tap_uv, 0.0).r; + float tap_depth = texture2D(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; #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); + float tap_amount = int_ofs == 0 ? 1.0 : smoothstep(dof_begin, dof_end, tap_depth); tap_amount *= tap_amount * tap_amount; //prevent undesired glow effect - vec4 tap_color = textureLod(source_color, tap_uv, 0.0) * tap_k; + vec4 tap_color = texture2DLod(source_color, tap_uv, 0.0) * tap_k; k_accum += tap_k * tap_amount; color_accum += tap_color * tap_amount; @@ -204,7 +254,7 @@ void main() { color_accum /= k_accum; } - frag_color = color_accum; ///k_accum; + gl_FragColor = color_accum; ///k_accum; #endif @@ -212,19 +262,19 @@ void main() { vec4 color_accum = vec4(0.0); - float max_accum = 0; + float max_accum = 0.0; for (int i = 0; i < dof_kernel_size; i++) { 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 - abs(float(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 = texture2DLod(source_color, tap_uv, 0.0); - float tap_depth = texture(dof_source_depth, tap_uv, 0.0).r; + float tap_depth = texture2D(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; @@ -247,46 +297,16 @@ void main() { 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); - -#endif - -#ifndef DOF_NEAR_FIRST_TAP - //color_accum=vec4(vec3(color_accum.a),1.0); -#endif - frag_color = color_accum; + gl_FragColor = color_accum; #endif #ifdef GLOW_FIRST_PASS -#ifdef GLOW_USE_AUTO_EXPOSURE - - frag_color /= texelFetch(source_auto_exposure, ivec2(0, 0), 0).r / auto_exposure_grey; -#endif - frag_color *= exposure; - - float luminance = max(frag_color.r, max(frag_color.g, frag_color.b)); + float luminance = max(gl_FragColor.r, max(gl_FragColor.g, gl_FragColor.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); - 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; - - frag_color = vec4(mix(color.rgb, color.rgb * mix(ssao_color.rgb, vec3(1.0), ssao), color.a), 1.0); + gl_FragColor = min(gl_FragColor * feedback, vec4(luminance_cap)); #endif } |