Add multi texture support for materials in GLTF format (#979)
* Initial commit of addition for GLTF materials.. should support loading more than just albedo map. * Clean up * fixed seg faults and leaks * temp don't overwrite defuse colour when rendering * undid something dumb! * correctly mixed diffuse map color when rendering to preserve not overwrite it
This commit is contained in:
Tyler Jessilynn Bezera
Ray
parent
ab52f98480
commit
3f7fa6d6e7
224
src/models.c
224
src/models.c
@ -2385,8 +2385,15 @@ void DrawModelEx(Model model, Vector3 position, Vector3 rotationAxis, float rota
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for (int i = 0; i < model.meshCount; i++)
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{
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model.materials[model.meshMaterial[i]].maps[MAP_DIFFUSE].color = tint;
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Color c = model.materials[model.meshMaterial[i]].maps[MAP_DIFFUSE].color;
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Color s = c;
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c.r = ((c.r/255) * (tint.r/255)) * 255;
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c.g = ((c.g/255) * (tint.g/255)) * 255;
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c.b = ((c.b/255) * (tint.b/255)) * 255;
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c.a = ((c.a/255) * (tint.a/255)) * 255;
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model.materials[model.meshMaterial[i]].maps[MAP_DIFFUSE].color = c;
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rlDrawMesh(model.meshes[i], model.materials[model.meshMaterial[i]], model.transform);
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model.materials[model.meshMaterial[i]].maps[MAP_DIFFUSE].color = s;
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}
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}
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@ -3344,6 +3351,92 @@ static unsigned char *DecodeBase64(char *input, int *size)
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return buf;
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}
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//static Texture LoadTextureFromCGLTFTextureView(cgltf_texture_view* view, Color tint, char* texPath)
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static Texture LoadTextureFromCGLTFTextureView(cgltf_image* image, Color tint, const char* texPath)
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{
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Texture texture = {0};
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//cgltf_image *image = view->texture->image;
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if (image->uri)
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{
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if ((strlen(image->uri) > 5) &&
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(image->uri[0] == 'd') &&
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(image->uri[1] == 'a') &&
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(image->uri[2] == 't') &&
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(image->uri[3] == 'a') &&
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(image->uri[4] == ':'))
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{
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// Data URI
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// Format: data:<mediatype>;base64,<data>
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// Find the comma
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int i = 0;
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while ((image->uri[i] != ',') && (image->uri[i] != 0))
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i++;
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if (image->uri[i] == 0)
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TraceLog(LOG_WARNING, "Invalid data URI");
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else
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{
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int size;
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unsigned char *data = DecodeBase64(image->uri + i + 1, &size);
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int w, h;
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unsigned char *raw = stbi_load_from_memory(data, size, &w, &h, NULL, 4);
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Image rimage = LoadImagePro(raw, w, h, UNCOMPRESSED_R8G8B8A8);
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ImageColorTint(&rimage, tint);
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texture = LoadTextureFromImage(rimage);
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UnloadImage(rimage);
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}
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}
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else
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{
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char *textureName = image->uri;
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char *texturePath = RL_MALLOC(strlen(texPath) + strlen(textureName) + 2);
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strcpy(texturePath, texPath);
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strcat(texturePath, "/");
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strcat(texturePath, textureName);
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Image rimage = LoadImage(texturePath);
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ImageColorTint(&rimage, tint);
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texture = LoadTextureFromImage(rimage);
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UnloadImage(rimage);
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RL_FREE(texturePath);
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}
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}
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else if (image->buffer_view)
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{
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unsigned char *data = RL_MALLOC(image->buffer_view->size);
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int n = image->buffer_view->offset;
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int stride = image->buffer_view->stride ? image->buffer_view->stride : 1;
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for (int i = 0; i < image->buffer_view->size; i++)
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{
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data[i] = ((unsigned char *)image->buffer_view->buffer->data)[n];
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n += stride;
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}
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int w, h;
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unsigned char *raw = stbi_load_from_memory(data, image->buffer_view->size, &w, &h, NULL, 4);
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Image rimage = LoadImagePro(raw, w, h, UNCOMPRESSED_R8G8B8A8);
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ImageColorTint(&rimage, tint);
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texture = LoadTextureFromImage(rimage);
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UnloadImage(rimage);
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free(raw);
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free(data);
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}
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else
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{
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Image rimage = LoadImageEx(&tint, 1, 1);
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texture = LoadTextureFromImage(rimage);
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UnloadImage(rimage);
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}
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return texture;
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}
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// Load glTF mesh data
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static Model LoadGLTF(const char *fileName)
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{
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@ -3426,106 +3519,49 @@ static Model LoadGLTF(const char *fileName)
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for (int i = 0; i < model.meshCount; i++) model.meshes[i].vboId = (unsigned int *)RL_CALLOC(MAX_MESH_VBO, sizeof(unsigned int));
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//For each material
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for (int i = 0; i < model.materialCount - 1; i++)
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{
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Color tint = WHITE;
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Texture2D texture = { 0 };
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model.materials[i] = LoadMaterialDefault();
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Color tint = (Color){ 255, 255, 255, 255 };
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const char *texPath = GetDirectoryPath(fileName);
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if (data->materials[i].has_pbr_metallic_roughness)
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{
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tint.r = (unsigned char)(data->materials[i].pbr_metallic_roughness.base_color_factor[0]*255.99f);
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tint.g = (unsigned char)(data->materials[i].pbr_metallic_roughness.base_color_factor[1]*255.99f);
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tint.b = (unsigned char)(data->materials[i].pbr_metallic_roughness.base_color_factor[2]*255.99f);
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tint.a = (unsigned char)(data->materials[i].pbr_metallic_roughness.base_color_factor[3]*255.99f);
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}
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else
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{
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tint.r = 1.0f;
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tint.g = 1.0f;
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tint.b = 1.0f;
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tint.a = 1.0f;
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}
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//Ensure material follows raylib support for PBR (metallic/roughness flow)
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if (data->materials[i].has_pbr_metallic_roughness) {
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float roughness = data->materials[i].pbr_metallic_roughness.roughness_factor;
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float metallic = data->materials[i].pbr_metallic_roughness.metallic_factor;
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if (data->materials[i].has_pbr_metallic_roughness)
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{
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cgltf_image *img = data->materials[i].pbr_metallic_roughness.base_color_texture.texture->image;
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if (img->uri)
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{
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if ((strlen(img->uri) > 5) &&
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(img->uri[0] == 'd') &&
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(img->uri[1] == 'a') &&
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(img->uri[2] == 't') &&
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(img->uri[3] == 'a') &&
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(img->uri[4] == ':'))
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{
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// Data URI
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// Format: data:<mediatype>;base64,<data>
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// Find the comma
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int i = 0;
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while ((img->uri[i] != ',') && (img->uri[i] != 0)) i++;
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if (img->uri[i] == 0) TraceLog(LOG_WARNING, "[%s] Invalid data URI", fileName);
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else
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{
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int size;
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unsigned char *data = DecodeBase64(img->uri + i + 1, &size);
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int w, h;
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unsigned char *raw = stbi_load_from_memory(data, size, &w, &h, NULL, 4);
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Image image = LoadImagePro(raw, w, h, UNCOMPRESSED_R8G8B8A8);
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ImageColorTint(&image, tint);
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texture = LoadTextureFromImage(image);
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UnloadImage(image);
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}
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}
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else
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{
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char *textureName = img->uri;
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char *texturePath = RL_MALLOC(strlen(texPath) + strlen(textureName) + 2);
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strcpy(texturePath, texPath);
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strcat(texturePath, "/");
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strcat(texturePath, textureName);
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Image image = LoadImage(texturePath);
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ImageColorTint(&image, tint);
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texture = LoadTextureFromImage(image);
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UnloadImage(image);
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RL_FREE(texturePath);
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}
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}
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else if (img->buffer_view)
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{
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unsigned char *data = RL_MALLOC(img->buffer_view->size);
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int n = img->buffer_view->offset;
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int stride = img->buffer_view->stride ? img->buffer_view->stride : 1;
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for (int i = 0; i < img->buffer_view->size; i++)
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{
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data[i] = ((unsigned char *)img->buffer_view->buffer->data)[n];
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n += stride;
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}
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int w, h;
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unsigned char *raw = stbi_load_from_memory(data, img->buffer_view->size, &w, &h, NULL, 4);
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Image image = LoadImagePro(raw, w, h, UNCOMPRESSED_R8G8B8A8);
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ImageColorTint(&image, tint);
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texture = LoadTextureFromImage(image);
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UnloadImage(image);
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}
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else
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{
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Image image = LoadImageEx(&tint, 1, 1);
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texture = LoadTextureFromImage(image);
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UnloadImage(image);
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if (model.materials[i].name && data->materials[i].name) {
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strcpy(model.materials[i].name, data->materials[i].name);
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}
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model.materials[i] = LoadMaterialDefault();
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model.materials[i].maps[MAP_DIFFUSE].texture = texture;
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// shouldn't these be *255 ???
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tint.r = (unsigned char)(data->materials[i].pbr_metallic_roughness.base_color_factor[0]*255);
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tint.g = (unsigned char)(data->materials[i].pbr_metallic_roughness.base_color_factor[1]*255);
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tint.b = (unsigned char)(data->materials[i].pbr_metallic_roughness.base_color_factor[2]*255);
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tint.a = (unsigned char)(data->materials[i].pbr_metallic_roughness.base_color_factor[3]*255);
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model.materials[i].maps[MAP_ROUGHNESS].color = tint;
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if (data->materials[i].pbr_metallic_roughness.base_color_texture.texture) {
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model.materials[i].maps[MAP_ALBEDO].texture = LoadTextureFromCGLTFTextureView(data->materials[i].pbr_metallic_roughness.base_color_texture.texture->image, tint, texPath);
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}
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//tint isn't need for other textures.. pass null or clear? (try full white because of mixing (multiplying * white has no effect))
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tint = (Color){ 255, 255, 255, 255 };
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if (data->materials[i].pbr_metallic_roughness.metallic_roughness_texture.texture) {
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model.materials[i].maps[MAP_ROUGHNESS].texture = LoadTextureFromCGLTFTextureView(data->materials[i].pbr_metallic_roughness.metallic_roughness_texture.texture->image, tint, texPath);
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}
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model.materials[i].maps[MAP_ROUGHNESS].value = roughness;
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model.materials[i].maps[MAP_METALNESS].value = metallic;
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if (data->materials[i].normal_texture.texture) {
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model.materials[i].maps[MAP_NORMAL].texture = LoadTextureFromCGLTFTextureView(data->materials[i].normal_texture.texture->image, tint, texPath);
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}
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if (data->materials[i].occlusion_texture.texture) {
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model.materials[i].maps[MAP_OCCLUSION].texture = LoadTextureFromCGLTFTextureView(data->materials[i].occlusion_texture.texture->image, tint, texPath);
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}
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}
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}
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@ -106,7 +106,7 @@
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#ifndef RL_FREE
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#define RL_FREE(p) free(p)
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#endif
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// NOTE: MSC C++ compiler does not support compound literals (C99 feature)
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// Plain structures in C++ (without constructors) can be initialized from { } initializers.
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#if defined(__cplusplus)
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@ -336,6 +336,7 @@ typedef struct MaterialMap {
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// Material type (generic)
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typedef struct Material {
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char* name; // Material name
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Shader shader; // Material shader
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MaterialMap *maps; // Material maps array (MAX_MATERIAL_MAPS)
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float *params; // Material generic parameters (if required)
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@ -1406,7 +1407,7 @@ RLAPI bool IsAudioStreamPlaying(AudioStream stream); // Check i
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RLAPI void StopAudioStream(AudioStream stream); // Stop audio stream
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RLAPI void SetAudioStreamVolume(AudioStream stream, float volume); // Set volume for audio stream (1.0 is max level)
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RLAPI void SetAudioStreamPitch(AudioStream stream, float pitch); // Set pitch for audio stream (1.0 is base level)
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//------------------------------------------------------------------------------------
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// Network (Module: network)
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//------------------------------------------------------------------------------------
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