X-Git-Url: https://git.lukelau.me/?p=opengl.git;a=blobdiff_plain;f=material.cpp;h=32bf9e0fef2d9b609265955a1c455cc64ef99fef;hp=470f1a2caa370bd2292a474f2ccc34f39e9662bf;hb=d0c631f46c6db417e013b1bc0edec24cb9c2824a;hpb=37cba564a96018a5500e942498d4e48c0ebe73ed

diff --git a/material.cpp b/material.cpp
index 470f1a2..32bf9e0 100644
--- a/material.cpp
+++ b/material.cpp
@@ -1,42 +1,75 @@
 #include "material.hpp"
-#include <iostream>
-#include <CoreGraphics/CoreGraphics.h>
+#include "image.hpp"
+#include <assimp/pbrmaterial.h>
+
+Material::Material(const aiMaterial &ai, const aiScene &scene, GLuint progId): progId(progId) {
+	aiString name;
+	ai.Get(AI_MATKEY_NAME, name);	
+	if (name == aiString("default material")) {
+		abort();
+	}
 
-Material::Material(const aiMaterial &ai, GLuint progId): progId(progId) {
-	if (ai.GetTextureCount(aiTextureType_DIFFUSE) > 0) {
 	aiString path;
-		ai.GetTexture(aiTextureType_DIFFUSE, 0, &path);
-		texture = new Texture(std::string(path.C_Str()));
+	ai.GetTexture(aiTextureType_DIFFUSE, 1, &path);
+	albedo = new Texture(path, scene);
+	path = "";
+
+	ai.GetTexture(aiTextureType_NORMALS, 0, &path);
+	normal = new Texture(path, scene);
+	path = "";
+
+	ai.GetTexture(AI_MATKEY_GLTF_PBRMETALLICROUGHNESS_METALLICROUGHNESS_TEXTURE, &path);
+	metallicRoughness = new Texture(path, scene);
+	path = "";
+	
+	ai.GetTexture(aiTextureType_LIGHTMAP, 0, &path);
+	if (path == aiString("")) {
+		fprintf(stderr, "Material %s does not have an AO map", name.C_Str());
+		abort();
 	}
-	ai.Get(AI_MATKEY_SHININESS, shininess);
-	ai.Get(AI_MATKEY_COLOR_AMBIENT, ambient);
-	ai.Get(AI_MATKEY_COLOR_DIFFUSE, diffuse);
-	ai.Get(AI_MATKEY_COLOR_SPECULAR, specular);
+	ambientOcclusion = new Texture(path, scene);
 }
 
-Material::Texture::Texture(const std::string &path) {
-	auto provider = CGDataProviderCreateWithFilename(path.c_str());
-	auto ref = CGImageCreateWithJPEGDataProvider(provider, nullptr, false, kCGRenderingIntentDefault);
-	auto dataRef = CGDataProviderCopyData(CGImageGetDataProvider(ref));
-	auto img = (unsigned char*) CFDataGetBytePtr(dataRef);
-
+Material::Texture::Texture(const aiString fileName, const aiScene &scene) {
 	glGenTextures(1, &texId);
 	glBindTexture(GL_TEXTURE_2D, texId);
-	auto width = CGImageGetWidth(ref), height = CGImageGetHeight(ref);
-	glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, width, height, 0, GL_RGBA, GL_UNSIGNED_BYTE, img);
-	glGenerateMipmap(GL_TEXTURE_2D);
 	
-	CGImageRelease(ref);
-	CFRelease(dataRef);
+	std::string path;
+	unsigned char *data;
+	if (fileName.data[0] == '*') {
+		// embedded
+		int embIdx = atoi(&fileName.data[1]);
+		aiTexture *texture = scene.mTextures[embIdx];
+		if (texture->mHeight == 0) {
+			Image img((unsigned char*)texture->pcData, texture->mWidth, texture->achFormatHint);
+			glTexImage2D(GL_TEXTURE_2D, 0, img.internalFormat(), img.width(), img.height(), 0, img.format(), img.type(), img.data());
+		} else {
+			fprintf(stderr, "TODO: handle uncompressed embedded textures");
+			abort();
+		}
+	} else {
+		// not embedded
+		Image img("models/" + std::string(fileName.C_Str()));
+		glTexImage2D(GL_TEXTURE_2D, 0, img.internalFormat(), img.width(), img.height(), 0, img.format(), img.type(), img.data());
+	}
+
+	glGenerateMipmap(GL_TEXTURE_2D);
 }
 
 void Material::bind() const {
-	glUniform3f(glGetUniformLocation(progId, "material.ambient"), ambient.r, ambient.g, ambient.b);
-	glUniform3f(glGetUniformLocation(progId, "material.diffuse"), diffuse.r, diffuse.g, diffuse.b);
-	glUniform3f(glGetUniformLocation(progId, "material.specular"), specular.r, specular.g, specular.b);
-	glUniform1f(glGetUniformLocation(progId, "material.shininess"), shininess);
-	glUniform1i(glGetUniformLocation(progId, "material.hasTexture"), texture != nullptr);
-
-	if (texture) 
-		glBindTexture(GL_TEXTURE_2D, texture->texId);
+	glUniform1i(glGetUniformLocation(progId, "albedoMap"), 0);
+	glActiveTexture(GL_TEXTURE0);
+	glBindTexture(GL_TEXTURE_2D, albedo->texId);
+
+	glUniform1i(glGetUniformLocation(progId, "normalMap"), 1);
+	glActiveTexture(GL_TEXTURE1);
+	glBindTexture(GL_TEXTURE_2D, normal->texId);
+
+	glUniform1i(glGetUniformLocation(progId, "metallicRoughnessMap"), 2);
+	glActiveTexture(GL_TEXTURE2);
+	glBindTexture(GL_TEXTURE_2D, metallicRoughness->texId);
+
+	glUniform1i(glGetUniformLocation(progId, "aoMap"), 3);
+	glActiveTexture(GL_TEXTURE3);
+	glBindTexture(GL_TEXTURE_2D, ambientOcclusion->texId);
 }