58 lines
2.0 KiB
Plaintext
58 lines
2.0 KiB
Plaintext
|
#line 2
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Copyright (c) 2023 lax1dude. All Rights Reserved.
|
||
|
|
*
|
||
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
|
||
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
|
||
|
|
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
|
||
|
|
* IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
|
||
|
|
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
|
||
|
|
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
|
||
|
|
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
|
||
|
|
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
||
|
|
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
||
|
|
* POSSIBILITY OF SUCH DAMAGE.
|
||
|
|
*
|
||
|
|
*/
|
||
|
|
|
||
|
|
precision lowp int;
|
||
|
|
precision highp float;
|
||
|
|
precision highp sampler2D;
|
||
|
|
|
||
|
|
in vec2 v_position2f;
|
||
|
|
|
||
|
|
layout(location = 0) out vec4 output4f;
|
||
|
|
|
||
|
|
uniform sampler2D u_lightingHDRFramebufferTexture;
|
||
|
|
uniform sampler2D u_framebufferLumaAvgInput;
|
||
|
|
uniform sampler2D u_ditherTexture;
|
||
|
|
uniform vec3 u_exposure3f;
|
||
|
|
uniform vec2 u_ditherScale2f;
|
||
|
|
|
||
|
|
void main() {
|
||
|
|
float lumaHDR = textureLod(u_framebufferLumaAvgInput, vec2(0.5), 0.0).r;
|
||
|
|
vec3 input3f = textureLod(u_lightingHDRFramebufferTexture, v_position2f, 0.0).rgb;
|
||
|
|
|
||
|
|
input3f /= (0.1 + clamp(lumaHDR * 6.0, 0.2, 4.0));
|
||
|
|
|
||
|
|
input3f *= u_exposure3f;
|
||
|
|
|
||
|
|
// ACES, modified to approximate gamma correction
|
||
|
|
const float a = 1.22;
|
||
|
|
const float b = 1.78;
|
||
|
|
const float c = 1.22;
|
||
|
|
const float d = 1.79;
|
||
|
|
const float e = 0.29;
|
||
|
|
|
||
|
|
input3f = clamp((input3f * (a * input3f + b)) / (input3f * (c * input3f + d) + e), 0.0, 1.0);
|
||
|
|
|
||
|
|
// desaturate a bit, makes it look like less of a cartoon
|
||
|
|
float sat = 0.8;
|
||
|
|
float luma = dot(input3f, vec3(0.299, 0.587, 0.114));
|
||
|
|
input3f = (input3f - luma) * sat + luma;
|
||
|
|
input3f += textureLod(u_ditherTexture, v_position2f * u_ditherScale2f, 0.0).r / 255.0;
|
||
|
|
|
||
|
|
output4f = vec4(clamp(input3f, 0.0, 1.0), luma);
|
||
|
|
}
|