mirror of
https://github.com/rwengine/openrw.git
synced 2024-11-09 20:32:43 +01:00
534 lines
19 KiB
C++
534 lines
19 KiB
C++
#include <renderwure/render/GTARenderer.hpp>
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#include <renderwure/engine/GTAEngine.hpp>
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#include <deque>
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#include <glm/gtc/type_ptr.hpp>
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const char *vertexShaderSource = "#version 130\n"
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"in vec3 position;"
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"in vec3 normal;"
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"in vec2 texCoords;"
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"in vec4 colour;"
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"out vec3 Normal;"
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"out vec2 TexCoords;"
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"out vec4 Colour;"
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"out vec4 EyeSpace;"
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"uniform mat4 model;"
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"uniform mat4 view;"
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"uniform mat4 proj;"
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"void main()"
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"{"
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" Normal = normal;"
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" TexCoords = texCoords;"
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" Colour = colour;"
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" vec4 eyeSpace = view * model * vec4(position, 1.0);"
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" EyeSpace = proj * eyeSpace;"
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" gl_Position = proj * eyeSpace;"
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"}";
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const char *fragmentShaderSource = "#version 130\n"
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"in vec3 Normal;"
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"in vec2 TexCoords;"
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"in vec4 Colour;"
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"in vec4 EyeSpace;"
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"uniform sampler2D texture;"
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"uniform vec4 BaseColour;"
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"uniform vec4 AmbientColour;"
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"uniform vec4 DynamicColour;"
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"uniform vec3 SunDirection;"
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"uniform float FogStart;"
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"uniform float FogEnd;"
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"uniform float MaterialDiffuse;"
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"uniform float MaterialAmbient;"
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"void main()"
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"{"
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" vec4 c = texture2D(texture, TexCoords);"
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" if(c.a < 0.5) discard;"
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" float fogCoord = abs(EyeSpace.z / EyeSpace.w);"
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" float fogfac = clamp( (FogEnd-fogCoord)/(FogEnd-FogStart), 0.0, 1.0 );"
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" float l = clamp(dot(Normal, SunDirection), 0.0, 1);"
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" gl_FragColor = mix(AmbientColour, BaseColour * (vec4(0.5) + Colour * 0.5) * (vec4(0.5) + DynamicColour * 0.5) * c, fogfac);"
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// " gl_FragColor = vec4((Normal*0.5)+0.5, 1.0);"
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// " gl_FragColor = c * vec4((Normal*0.5)+0.5, 1.0);"
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"}";
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const char *skydomeVertexShaderSource = "#version 130\n"
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"in vec3 position;"
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"uniform mat4 view;"
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"uniform mat4 proj;"
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"out vec3 Position;"
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"uniform float Far;"
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"void main() {"
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" Position = position;"
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" vec4 viewsp = proj * mat4(mat3(view)) * vec4(position, 1.0);"
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" viewsp.z = viewsp.w - 0.000001;"
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" gl_Position = viewsp;"
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"}";
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const char *skydomeFragmentShaderSource = "#version 130\n"
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"in vec3 Position;"
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"uniform vec4 TopColor;"
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"uniform vec4 BottomColor;"
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"void main() {"
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" gl_FragColor = mix(BottomColor, TopColor, clamp(Position.z, 0, 1));"
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"}";
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const size_t skydomeSegments = 8, skydomeRows = 10;
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float planedata[] = {
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// Vertices
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1.0f, 1.0f, 0.f,
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-0.0f, 1.0f, 0.f,
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1.0f,-0.0f, 0.f,
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-0.0f,-0.0f, 0.f,
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// UV coords
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1.f, 1.f,
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0.f, 1.f,
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1.f, 0.f,
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0.f, 0.f,
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// Normals
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0.f, 0.f, 1.f,
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0.f, 0.f, 1.f,
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0.f, 0.f, 1.f,
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0.f, 0.f, 1.f,
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// Colours
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1.f, 1.f, 1.f,
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1.f, 1.f, 1.f,
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1.f, 1.f, 1.f,
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1.f, 1.f, 1.f
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};
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GLuint compileShader(GLenum type, const char *source)
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{
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GLuint shader = glCreateShader(type);
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glShaderSource(shader, 1, &source, NULL);
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glCompileShader(shader);
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GLint status;
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glGetShaderiv(shader, GL_COMPILE_STATUS, &status);
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if (status != GL_TRUE) {
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GLint len;
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glGetShaderiv(shader, GL_INFO_LOG_LENGTH, &len);
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GLchar *buffer = new GLchar[len];
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glGetShaderInfoLog(shader, len, NULL, buffer);
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std::cerr << "ERROR compiling shader: " << buffer << std::endl;
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delete[] buffer;
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exit(1);
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}
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return shader;
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}
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GTARenderer::GTARenderer(GTAEngine* engine)
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: engine(engine)
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{
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GLuint vertexShader = compileShader(GL_VERTEX_SHADER, vertexShaderSource);
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GLuint fragmentShader = compileShader(GL_FRAGMENT_SHADER, fragmentShaderSource);
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worldProgram = glCreateProgram();
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glAttachShader(worldProgram, vertexShader);
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glAttachShader(worldProgram, fragmentShader);
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glLinkProgram(worldProgram);
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glUseProgram(worldProgram);
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posAttrib = glGetAttribLocation(worldProgram, "position");
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texAttrib = glGetAttribLocation(worldProgram, "texCoords");
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normalAttrib = glGetAttribLocation(worldProgram, "normal");
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colourAttrib = glGetAttribLocation(worldProgram, "colour");
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uniModel = glGetUniformLocation(worldProgram, "model");
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uniView = glGetUniformLocation(worldProgram, "view");
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uniProj = glGetUniformLocation(worldProgram, "proj");
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uniCol = glGetUniformLocation(worldProgram, "BaseColour");
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uniAmbientCol = glGetUniformLocation(worldProgram, "AmbientColour");
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uniSunDirection = glGetUniformLocation(worldProgram, "SunDirection");
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uniDynamicCol = glGetUniformLocation(worldProgram, "DynamicColour");
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uniMatDiffuse = glGetUniformLocation(worldProgram, "MaterialDiffuse");
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uniMatAmbient = glGetUniformLocation(worldProgram, "MaterialAmbient");
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uniFogStart = glGetUniformLocation(worldProgram, "FogStart");
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uniFogEnd = glGetUniformLocation(worldProgram, "FogEnd");
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vertexShader = compileShader(GL_VERTEX_SHADER, skydomeVertexShaderSource);
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fragmentShader = compileShader(GL_FRAGMENT_SHADER, skydomeFragmentShaderSource);
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skyProgram = glCreateProgram();
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glAttachShader(skyProgram, vertexShader);
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glAttachShader(skyProgram, fragmentShader);
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glLinkProgram(skyProgram);
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glUseProgram(skyProgram);
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skyUniView = glGetUniformLocation(skyProgram, "view");
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skyUniProj = glGetUniformLocation(skyProgram, "proj");
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skyUniTop = glGetUniformLocation(skyProgram, "TopColor");
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skyUniBottom = glGetUniformLocation(skyProgram, "BottomColor");
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glGenVertexArrays( 1, &vao );
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// prepare our special internal plane.
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glGenBuffers(1, &planeVBO);
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glBindBuffer(GL_ARRAY_BUFFER, planeVBO);
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glBufferData(GL_ARRAY_BUFFER, sizeof(planedata), planedata, GL_STATIC_DRAW);
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// And our skydome while we're at it.
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glGenBuffers(1, &skydomeVBO);
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glBindBuffer(GL_ARRAY_BUFFER, skydomeVBO);
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size_t segments = skydomeSegments, rows = skydomeRows;
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float radius = 1.f;
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const float pi = 3.14159265;
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const float pio2 = (pi / 2.f);
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glm::vec3 skydomeBuff[rows * segments * 2];
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for( size_t s = 0, i = 0; s < segments; ++s) {
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for( size_t r = 0; r < rows; ++r) {
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skydomeBuff[i++] = glm::vec3(
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radius * cos( (s+1.f)/segments * pio2) * sin( 2.0f * (float)r/rows * pi),
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radius * cos( (s+1.f)/segments * pio2) * cos( 2.0f * (float)r/rows * pi),
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radius * sin( (s+1.f)/segments * pio2)
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);
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skydomeBuff[i++] = glm::vec3(
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radius * cos( (s+0.f)/segments * pio2) * sin( 2.0f * (float)r/rows * pi),
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radius * cos( (s+0.f)/segments * pio2) * cos( 2.0f * (float)r/rows * pi),
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radius * sin( (s+0.f)/segments * pio2)
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);
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}
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}
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glBufferData(GL_ARRAY_BUFFER, sizeof(skydomeBuff), skydomeBuff, GL_STATIC_DRAW);
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}
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float mix(uint8_t a, uint8_t b, float num)
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{
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return a+(b-a)*num;
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}
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void GTARenderer::renderWorld()
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{
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glBindVertexArray( vao );
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float gameTime = fmod(engine->gameTime, 24.f);
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int hour = floor(gameTime);
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int hournext = (hour + 1) % 24;
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// std::cout << leclock << " " << hour << std::endl;
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auto weather = engine->gameData.weatherLoader.weather[hour];
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auto weathernext = engine->gameData.weatherLoader.weather[hournext];
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float interpolate = gameTime - hour;
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glm::vec3 skyTop{
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mix(weather.skyTopColor.r, weathernext.skyTopColor.r, interpolate) / 255.0,
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mix(weather.skyTopColor.g, weathernext.skyTopColor.g, interpolate) / 255.0,
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mix(weather.skyTopColor.b, weathernext.skyTopColor.b, interpolate) / 255.0,
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};
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glm::vec3 skyBottom{
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mix(weather.skyBottomColor.r, weathernext.skyBottomColor.r, interpolate) / 255.0,
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mix(weather.skyBottomColor.g, weathernext.skyBottomColor.g, interpolate) / 255.0,
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mix(weather.skyBottomColor.b, weathernext.skyBottomColor.b, interpolate) / 255.0,
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};
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glm::vec3 ambient{
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mix(weather.ambientColor.r, weathernext.ambientColor.r, interpolate) / 255.0,
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mix(weather.ambientColor.g, weathernext.ambientColor.g, interpolate) / 255.0,
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mix(weather.ambientColor.b, weathernext.ambientColor.b, interpolate) / 255.0,
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};
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glm::vec3 dynamic{
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mix(weather.directLightColor.r, weathernext.directLightColor.r, interpolate) / 255.0,
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mix(weather.directLightColor.g, weathernext.directLightColor.g, interpolate) / 255.0,
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mix(weather.directLightColor.b, weathernext.directLightColor.b, interpolate) / 255.0,
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};
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float theta = (gameTime - 12.f)/24.0 * 2 * 3.14159265;
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glm::vec3 sunDirection{
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sin(theta),
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0.0,
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cos(theta),
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};
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sunDirection = glm::normalize(sunDirection);
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float weatherFar = weather.farClipping; //mix(weather.farClipping, weathernext.farClipping, interpolate);
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camera.frustum.far = weatherFar;
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/*
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std::cout << "CLOCK IS " << leclock << std::endl;
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std::cout << "AMBIENT " << ambient.x << ", " << ambient.y << ", " << ambient.z << std::endl;
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std::cout << "SUN DIR " << sunDirection.x << ", " << sunDirection.y << ", " << sunDirection.z << std::endl;
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*/
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glUseProgram(worldProgram);
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glUniform1f(uniFogStart, weather.fogStart);
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glUniform1f(uniFogEnd, camera.frustum.far);
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glUniform4f(uniAmbientCol, ambient.x, ambient.y, ambient.z, 1.f);
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glUniform4f(uniDynamicCol, dynamic.x, dynamic.y, dynamic.z, 1.f);
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glUniform3f(uniSunDirection, sunDirection.x, sunDirection.y, sunDirection.z);
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glUniform1f(uniMatDiffuse, 0.9f);
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glUniform1f(uniMatAmbient, 0.1f);
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glClearColor(skyBottom.r, skyBottom.g, skyBottom.b, 1.f);
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glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
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glm::mat4 proj = camera.frustum.projection();
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glm::mat4 view = camera.frustum.view;
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glUniformMatrix4fv(uniView, 1, GL_FALSE, glm::value_ptr(view));
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glUniformMatrix4fv(uniProj, 1, GL_FALSE, glm::value_ptr(proj));
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camera.frustum.update(camera.frustum.projection() * view);
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rendered = culled = 0;
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auto& textureLoader = engine->gameData.textureLoader;
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glBindBuffer(GL_ARRAY_BUFFER, planeVBO);
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glVertexAttribPointer(posAttrib, 3, GL_FLOAT, GL_FALSE, 0, 0);
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glVertexAttribPointer(texAttrib, 2, GL_FLOAT, GL_FALSE, 0, (void*)(sizeof(float)*3*4));
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glVertexAttribPointer(normalAttrib, 3, GL_FLOAT, GL_FALSE, 0, (void*)(sizeof(float)*3*4 + sizeof(float)*2*4));
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glVertexAttribPointer(colourAttrib, 3, GL_FLOAT, GL_FALSE, 0, (void*)(sizeof(float)*3*4 + sizeof(float)*2*4 + sizeof(float)*3*4));
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glEnableVertexAttribArray(posAttrib);
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glEnableVertexAttribArray(texAttrib);
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glEnableVertexAttribArray(normalAttrib);
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glEnableVertexAttribArray(colourAttrib);
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textureLoader.bindTexture("water_old");
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for( size_t w = 0; w < engine->gameData.waterRects.size(); ++w) {
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GTATypes::WaterRect& r = engine->gameData.waterRects[w];
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glm::vec3 scale( r.xRight - r.xLeft, r.yTop - r.yBottom, 1.f );
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glm::vec3 pos( r.xLeft, r.yBottom, r.height );
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glm::mat4 matrixModel;
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matrixModel = glm::translate(matrixModel, pos);
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matrixModel = glm::scale(matrixModel, scale);
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glUniformMatrix4fv(uniModel, 1, GL_FALSE, glm::value_ptr(matrixModel));
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glUniform4f(uniCol, 1.f, 1.f, 1.f, 1.f);
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glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);
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}
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for(size_t i = 0; i < engine->pedestrians.size(); ++i) {
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GTACharacter& charac = engine->pedestrians[i];
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glm::mat4 matrixModel;
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matrixModel = glm::translate(matrixModel, charac.position);
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matrixModel = matrixModel * glm::mat4_cast(charac.rotation);
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if(!charac.model) continue;
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renderModel(charac.model, matrixModel);
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}
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for(size_t i = 0; i < engine->objectInstances.size(); ++i) {
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GTAInstance& inst = engine->objectInstances[i];
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LoaderIPLInstance &obj = inst.instance;
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if(((inst.object->flags & LoaderIDE::OBJS_t::NIGHTONLY) | (inst.object->flags & LoaderIDE::OBJS_t::DAYONLY)) != 0) {
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continue;
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}
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if(!inst.model)
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{
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std::cout << "model " << obj.model << " not loaded (" << engine->gameData.models.size() << " models loaded)" << std::endl;
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}
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glm::mat4 matrixModel;
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matrixModel = glm::translate(matrixModel, inst.position);
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matrixModel = glm::scale(matrixModel, inst.scale);
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matrixModel = matrixModel * glm::mat4_cast(inst.rotation);
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float mindist = 100000.f;
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for (size_t g = 0; g < inst.model->geometries.size(); g++)
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{
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RW::BSGeometryBounds& bounds = inst.model->geometries[g].geometryBounds;
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mindist = std::min(mindist, glm::length((glm::vec3(matrixModel[3])+bounds.center) - camera.worldPos) - bounds.radius);
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}
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if( mindist > (inst.object->drawDistance[0] * (inst.object->LOD ? 1.f : 2.f))
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|| (inst.object->LOD && mindist < 250.f) ) {
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culled++;
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continue;
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}
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renderModel(inst.model, matrixModel);
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}
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for(size_t v = 0; v < engine->vehicleInstances.size(); ++v) {
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GTAVehicle& inst = engine->vehicleInstances[v];
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if(!inst.model)
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{
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std::cout << "model " << inst.vehicle->modelName << " not loaded (" << engine->gameData.models.size() << " models loaded)" << std::endl;
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}
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glm::mat4 matrixModel;
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matrixModel = glm::translate(matrixModel, inst.position);
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glm::mat4 matrixVehicle = matrixModel;
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renderModel(inst.model, matrixModel, &inst);
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// Draw wheels n' stuff
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for( size_t w = 0; w < inst.vehicle->wheelPositions.size(); ++w) {
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auto woi = engine->objectTypes.find(inst.vehicle->wheelModelID);
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if(woi != engine->objectTypes.end()) {
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Model* wheelModel = engine->gameData.models["wheels"];
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if( wheelModel) {
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auto wwpos = matrixVehicle * glm::vec4(inst.vehicle->wheelPositions[w], 1.f);
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renderNamedFrame(wheelModel, glm::vec3(wwpos), glm::quat(), glm::vec3(1.f, inst.vehicle->wheelScale, inst.vehicle->wheelScale), woi->second->modelName);
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}
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else {
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std::cout << "Wheel model " << woi->second->modelName << " not loaded" << std::endl;
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}
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}
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}
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}
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glUseProgram(skyProgram);
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glBindBuffer(GL_ARRAY_BUFFER, skydomeVBO);
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glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, 0, 0);
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glEnableVertexAttribArray(0);
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glUniformMatrix4fv(skyUniView, 1, GL_FALSE, glm::value_ptr(view));
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glUniformMatrix4fv(skyUniProj, 1, GL_FALSE, glm::value_ptr(proj));
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glUniform4f(skyUniTop, skyTop.r, skyTop.g, skyTop.b, 1.f);
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glUniform4f(skyUniBottom, skyBottom.r, skyBottom.g, skyBottom.b, 1.f);
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glDrawArrays(GL_TRIANGLE_STRIP, 0, skydomeSegments * skydomeRows * 2 + 1);
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glUseProgram(0);
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glBindBuffer(GL_ARRAY_BUFFER, 0);
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glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0);
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glBindVertexArray( 0 );
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}
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void GTARenderer::renderNamedFrame(Model* model, const glm::vec3& pos, const glm::quat& rot, const glm::vec3& scale, const std::string& name)
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{
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for (size_t f = 0; f < model->frames.size(); f++)
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{
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if( model->frameNames.size() > f) {
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std::string& fname = model->frameNames[f];
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bool LOD = (fname.find("_l1") != fname.npos || fname.find("_l0") != fname.npos);
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if( LOD || fname != name ) {
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continue;
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}
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}
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else {
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continue;
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}
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size_t g = f;
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RW::BSGeometryBounds& bounds = model->geometries[g].geometryBounds;
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if(! camera.frustum.intersects(bounds.center + pos, bounds.radius)) {
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culled++;
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continue;
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}
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else {
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rendered++;
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}
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glm::mat4 matrixModel;
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matrixModel = glm::translate(matrixModel, pos);
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matrixModel = glm::scale(matrixModel, scale);
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matrixModel = matrixModel * glm::mat4_cast(rot);
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renderGeometry(model, g, matrixModel);
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break;
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}
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}
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void GTARenderer::renderGeometry(Model* model, size_t g, const glm::mat4& modelMatrix, GTAObject* object)
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{
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glUniformMatrix4fv(uniModel, 1, GL_FALSE, glm::value_ptr(modelMatrix));
|
|
glUniform4f(uniCol, 1.f, 1.f, 1.f, 1.f);
|
|
|
|
glBindBuffer(GL_ARRAY_BUFFER, model->geometries[g].VBO);
|
|
glVertexAttribPointer(posAttrib, 3, GL_FLOAT, GL_FALSE, 0, 0);
|
|
glVertexAttribPointer(texAttrib, 2, GL_FLOAT, GL_FALSE, 0, (void*)(model->geometries[g].vertices.size() * sizeof(float) * 3));
|
|
glVertexAttribPointer(normalAttrib, 3, GL_FLOAT, GL_FALSE, 0,
|
|
(void *) ((model->geometries[g].vertices.size() * sizeof(float) * 3) + (model->geometries[g].texcoords.size() * sizeof(float) * 2))
|
|
);
|
|
glVertexAttribPointer(colourAttrib, 4, GL_FLOAT, GL_FALSE, 0,
|
|
(void *) ((model->geometries[g].vertices.size() * sizeof(float) * 3)
|
|
+ (model->geometries[g].texcoords.size() * sizeof(float) * 2)
|
|
+ (model->geometries[g].normals.size() * sizeof(float) * 3))
|
|
);
|
|
glEnableVertexAttribArray(posAttrib);
|
|
glEnableVertexAttribArray(texAttrib);
|
|
glEnableVertexAttribArray(normalAttrib);
|
|
glEnableVertexAttribArray(colourAttrib);
|
|
|
|
for(size_t sg = 0; sg < model->geometries[g].subgeom.size(); ++sg)
|
|
{
|
|
if (model->geometries[g].materials.size() > model->geometries[g].subgeom[sg].material) {
|
|
Model::Material& mat = model->geometries[g].materials[model->geometries[g].subgeom[sg].material];
|
|
|
|
if(mat.textures.size() > 0) {
|
|
engine->gameData.textureLoader.bindTexture(mat.textures[0].name);
|
|
}
|
|
|
|
if( (model->geometries[g].flags & RW::BSGeometry::ModuleMaterialColor) == RW::BSGeometry::ModuleMaterialColor) {
|
|
auto colmasked = mat.colour;
|
|
size_t R = colmasked % 256; colmasked /= 256;
|
|
size_t G = colmasked % 256; colmasked /= 256;
|
|
size_t B = colmasked % 256; colmasked /= 256;
|
|
if( object && object->type() == GTAObject::Vehicle ) {
|
|
auto vehicle = static_cast<GTAVehicle*>(object);
|
|
if( R == 60 && G == 255 && B == 0 ) {
|
|
glUniform4f(uniCol, vehicle->colourPrimary.r, vehicle->colourPrimary.g, vehicle->colourPrimary.b, 1.f);
|
|
}
|
|
else if( R == 255 && G == 0 && B == 175 ) {
|
|
glUniform4f(uniCol, vehicle->colourSecondary.r, vehicle->colourSecondary.g, vehicle->colourSecondary.b, 1.f);
|
|
}
|
|
else {
|
|
glUniform4f(uniCol, R/255.f, G/255.f, B/255.f, 1.f);
|
|
}
|
|
}
|
|
else {
|
|
glUniform4f(uniCol, R/255.f, G/255.f, B/255.f, 1.f);
|
|
}
|
|
}
|
|
|
|
glUniform1f(uniMatDiffuse, mat.diffuseIntensity);
|
|
glUniform1f(uniMatAmbient, mat.ambientIntensity);
|
|
}
|
|
|
|
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, model->geometries[g].subgeom[sg].EBO);
|
|
|
|
glDrawElements(GL_TRIANGLES, model->geometries[g].subgeom[sg].indices.size(), GL_UNSIGNED_INT, NULL);
|
|
}
|
|
}
|
|
|
|
void GTARenderer::renderModel(Model* model, const glm::mat4& modelMatrix, GTAObject* object)
|
|
{
|
|
for (size_t a = 0; a < model->atomics.size(); a++)
|
|
{
|
|
size_t g = model->atomics[a].geometry;
|
|
RW::BSGeometryBounds& bounds = model->geometries[g].geometryBounds;
|
|
if(! camera.frustum.intersects(bounds.center + glm::vec3(modelMatrix[3]), bounds.radius)) {
|
|
culled++;
|
|
continue;
|
|
}
|
|
else {
|
|
rendered++;
|
|
}
|
|
|
|
glm::mat4 atomicMatrix = modelMatrix;
|
|
|
|
std::deque<size_t> frames;
|
|
int32_t fi = model->atomics[a].frame;
|
|
if( object && object->type() == GTAObject::Vehicle ) {
|
|
if(model->frameNames.size() > fi) {
|
|
std::string& name = model->frameNames[fi];
|
|
if( name.substr(name.size()-3) == "dam" || name.find("lo") != name.npos || name.find("dummy") != name.npos ) {
|
|
continue;
|
|
}
|
|
}
|
|
}
|
|
|
|
while( fi != -1 ) {
|
|
frames.push_back(fi);
|
|
fi = model->frames[fi].index;
|
|
}
|
|
for( auto it = frames.rbegin(); it != frames.rend(); ++it ) {
|
|
glm::mat4 frameMatrix = glm::mat4(model->frames[*it].rotation);
|
|
frameMatrix[3] = glm::vec4(model->frames[*it].position, 1.f);
|
|
atomicMatrix = atomicMatrix * frameMatrix;
|
|
}
|
|
|
|
if( (model->geometries[g].flags & RW::BSGeometry::ModuleMaterialColor) != RW::BSGeometry::ModuleMaterialColor) {
|
|
glUniform4f(uniCol, 1.f, 1.f, 1.f, 1.f);
|
|
}
|
|
|
|
renderGeometry(model, g, atomicMatrix, object);
|
|
}
|
|
}
|