mirror of https://github.com/axmolengine/axmol.git
139 lines
4.1 KiB
C++
139 lines
4.1 KiB
C++
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#include "glslutils.hpp"
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#include "renderer/backend/ProgramCache.h"
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#include "renderer/backend/Device.h"
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static const char* s_wintell_hsv_frag = R"(
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#ifdef GL_ES
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precision mediump float;
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#endif
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varying vec2 v_texCoord;
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varying vec4 v_fragmentColor;
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// HSV matrix
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uniform mat3 u_mix_hsv;
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// filter color RGB values
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uniform vec3 u_filter_rgb;
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// force shading HSV values
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uniform vec3 u_shading_hsv;
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// whether use force shading
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uniform int u_force_shading;
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vec3 rgb2hsv(vec3 c)
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{
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vec4 K = vec4(0.0, -1.0 / 3.0, 2.0 / 3.0, -1.0);
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vec4 p = mix(vec4(c.bg, K.wz), vec4(c.gb, K.xy), step(c.b, c.g));
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vec4 q = mix(vec4(p.xyw, c.r), vec4(c.r, p.yzx), step(p.x, c.r));
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float d = q.x - min(q.w, q.y);
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float e = 1.0e-10;
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return vec3(abs(q.z + (q.w - q.y) / (6.0 * d + e)), d / (q.x + e), q.x);
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}
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vec3 hsv2rgb(vec3 c)
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{
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vec4 K = vec4(1.0, 2.0 / 3.0, 1.0 / 3.0, 3.0);
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vec3 p = abs(fract(c.xxx + K.xyz) * 6.0 - K.www);
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return c.z * mix(K.xxx, clamp(p - K.xxx, 0.0, 1.0), c.y);
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}
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void main()
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{
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vec4 pixColor = texture2D(CC_Texture0, v_texCoord); // * v_fragmentColor;
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vec3 rgbColor = u_mix_hsv * pixColor.rgb;
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float sum = pixColor.r + pixColor.g + pixColor.b;
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float rv = pixColor.r / sum;
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float gv = pixColor.g / sum;
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float bv = pixColor.b / sum;
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if( (rv < u_filter_rgb.r && gv < u_filter_rgb.g && bv < u_filter_rgb.b) || pixColor.a < 0.1)
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{ // color filters, resume to original color
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rgbColor = pixColor.rgb;
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rgbColor.r *= v_fragmentColor.a;
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rgbColor.g *= v_fragmentColor.a;
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rgbColor.b *= v_fragmentColor.a;
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}
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else { // shading color
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if(pixColor.a > 0.0) {
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if( u_force_shading != 0 ) { // force shading color
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if(gv > 0.115 && rgbColor.g > 0.115 && !(abs(rv - gv) < 0.10589 && abs(rv - bv) < 0.10589 && abs(gv - bv) < 0.0909) || ( rgbColor.b > 0.6280 && (bv - rv) > 0.0599 ) ) { // currently is yellow, TODO: use hh,ss,vv
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rgbColor.r = min(1.0, rgbColor.g * 1.2525);
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rgbColor.b *= rgbColor.b;
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rgbColor.g *= 0.9025;
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rgbColor.r *= v_fragmentColor.a;
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rgbColor.g *= v_fragmentColor.a;
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rgbColor.b *= v_fragmentColor.a;
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}
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}
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}
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}
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rgbColor.rgb = rgbColor.rgb * v_fragmentColor.rgb;
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gl_FragColor = vec4(rgbColor, pixColor.a * v_fragmentColor.a);
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}
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)";
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USING_NS_CC;
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bool glslutils::enableNodeIntelliShading(cocos2d::Node* node,
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bool noMVP,
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const cocos2d::Vec3& hsv,
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const cocos2d::Vec3& filter,
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bool forceShading,
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const cocos2d::Vec3& hsvShading)
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{
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if (node == nullptr)
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return false;
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// TODO: cache it?
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auto program = newHSVProgram();
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if (program == nullptr) {
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return false;
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}
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auto programState = new backend::ProgramState(program);
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program->release();
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node->setProgramState(programState);
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programState->release();
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updateNodeHsv(node, hsv, filter, forceShading, hsvShading);
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return true;
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}
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void glslutils::updateNodeHsv(cocos2d::Node* node,
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const cocos2d::Vec3& hsv,
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const cocos2d::Vec3& filter,
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bool forceShading,
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const cocos2d::Vec3& hsvShading)
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{
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Matrix3f hsvMatrix;
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setMatrixHueOptimized(&hsvMatrix, hsv.x);
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setMatrixSat(&hsvMatrix, hsv.y);
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setMatrixVal(&hsvMatrix, hsv.z);
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printmat3(hsvMatrix.m);
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auto programState = node->getProgramState();
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programState->setCallbackUniform(programState->getUniformLocation("u_mix_hsv"), [hsvMatrix](backend::ProgramState* programState, const backend::UniformLocation& location) {
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programState->setUniform(location, &hsvMatrix.m[0], sizeof(hsvMatrix));
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});
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programState->setUniform(programState->getUniformLocation("u_filter_rgb"), &filter, sizeof(filter));
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int32_t value = forceShading ? 1 : 0;
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programState->setUniform(programState->getUniformLocation("u_force_shading"), &value, sizeof(value));
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}
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backend::Program* glslutils::newHSVProgram()
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{
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auto fragSource = s_wintell_hsv_frag;
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return backend::Device::getInstance()->newProgram(positionTextureColor_vert, fragSource);
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}
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