diff options
Diffstat (limited to 'drivers/gles3/storage/texture_storage.cpp')
| -rw-r--r-- | drivers/gles3/storage/texture_storage.cpp | 1682 |
1 files changed, 1682 insertions, 0 deletions
diff --git a/drivers/gles3/storage/texture_storage.cpp b/drivers/gles3/storage/texture_storage.cpp new file mode 100644 index 0000000000..c05f516548 --- /dev/null +++ b/drivers/gles3/storage/texture_storage.cpp @@ -0,0 +1,1682 @@ +/*************************************************************************/ +/* texture_storage.cpp */ +/*************************************************************************/ +/* This file is part of: */ +/* GODOT ENGINE */ +/* https://godotengine.org */ +/*************************************************************************/ +/* Copyright (c) 2007-2022 Juan Linietsky, Ariel Manzur. */ +/* Copyright (c) 2014-2022 Godot Engine contributors (cf. AUTHORS.md). */ +/* */ +/* Permission is hereby granted, free of charge, to any person obtaining */ +/* a copy of this software and associated documentation files (the */ +/* "Software"), to deal in the Software without restriction, including */ +/* without limitation the rights to use, copy, modify, merge, publish, */ +/* distribute, sublicense, and/or sell copies of the Software, and to */ +/* permit persons to whom the Software is furnished to do so, subject to */ +/* the following conditions: */ +/* */ +/* The above copyright notice and this permission notice shall be */ +/* included in all copies or substantial portions of the Software. */ +/* */ +/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */ +/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */ +/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/ +/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */ +/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */ +/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */ +/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */ +/*************************************************************************/ + +#ifdef GLES3_ENABLED + +#include "texture_storage.h" +#include "config.h" +#include "drivers/gles3/effects/copy_effects.h" + +using namespace GLES3; + +TextureStorage *TextureStorage::singleton = nullptr; + +TextureStorage *TextureStorage::get_singleton() { + return singleton; +} + +static const GLenum _cube_side_enum[6] = { + GL_TEXTURE_CUBE_MAP_NEGATIVE_X, + GL_TEXTURE_CUBE_MAP_POSITIVE_X, + GL_TEXTURE_CUBE_MAP_NEGATIVE_Y, + GL_TEXTURE_CUBE_MAP_POSITIVE_Y, + GL_TEXTURE_CUBE_MAP_NEGATIVE_Z, + GL_TEXTURE_CUBE_MAP_POSITIVE_Z, +}; + +TextureStorage::TextureStorage() { + singleton = this; + + system_fbo = 0; + + { //create default textures + { // White Textures + + Ref<Image> image; + image.instantiate(); + image->create(4, 4, true, Image::FORMAT_RGBA8); + image->fill(Color(1, 1, 1, 1)); + image->generate_mipmaps(); + + default_gl_textures[DEFAULT_GL_TEXTURE_WHITE] = texture_allocate(); + texture_2d_initialize(default_gl_textures[DEFAULT_GL_TEXTURE_WHITE], image); + + Vector<Ref<Image>> images; + images.push_back(image); + + default_gl_textures[DEFAULT_GL_TEXTURE_2D_ARRAY_WHITE] = texture_allocate(); + texture_2d_layered_initialize(default_gl_textures[DEFAULT_GL_TEXTURE_2D_ARRAY_WHITE], images, RS::TEXTURE_LAYERED_2D_ARRAY); + + for (int i = 0; i < 3; i++) { + images.push_back(image); + } + + default_gl_textures[DEFAULT_GL_TEXTURE_3D_WHITE] = texture_allocate(); + texture_3d_initialize(default_gl_textures[DEFAULT_GL_TEXTURE_3D_WHITE], image->get_format(), 4, 4, 4, false, images); + + for (int i = 0; i < 2; i++) { + images.push_back(image); + } + + default_gl_textures[DEFAULT_GL_TEXTURE_CUBEMAP_WHITE] = texture_allocate(); + texture_2d_layered_initialize(default_gl_textures[DEFAULT_GL_TEXTURE_CUBEMAP_WHITE], images, RS::TEXTURE_LAYERED_CUBEMAP); + } + + { // black + Ref<Image> image; + image.instantiate(); + image->create(4, 4, true, Image::FORMAT_RGBA8); + image->fill(Color(0, 0, 0, 1)); + image->generate_mipmaps(); + + default_gl_textures[DEFAULT_GL_TEXTURE_BLACK] = texture_allocate(); + texture_2d_initialize(default_gl_textures[DEFAULT_GL_TEXTURE_BLACK], image); + + Vector<Ref<Image>> images; + + for (int i = 0; i < 4; i++) { + images.push_back(image); + } + + default_gl_textures[DEFAULT_GL_TEXTURE_3D_BLACK] = texture_allocate(); + texture_3d_initialize(default_gl_textures[DEFAULT_GL_TEXTURE_3D_BLACK], image->get_format(), 4, 4, 4, false, images); + + for (int i = 0; i < 2; i++) { + images.push_back(image); + } + default_gl_textures[DEFAULT_GL_TEXTURE_CUBEMAP_BLACK] = texture_allocate(); + texture_2d_layered_initialize(default_gl_textures[DEFAULT_GL_TEXTURE_CUBEMAP_BLACK], images, RS::TEXTURE_LAYERED_CUBEMAP); + } + + { + Ref<Image> image; + image.instantiate(); + image->create(4, 4, true, Image::FORMAT_RGBA8); + image->fill(Color(0.5, 0.5, 1, 1)); + image->generate_mipmaps(); + + default_gl_textures[DEFAULT_GL_TEXTURE_NORMAL] = texture_allocate(); + texture_2d_initialize(default_gl_textures[DEFAULT_GL_TEXTURE_NORMAL], image); + } + + { + Ref<Image> image; + image.instantiate(); + image->create(4, 4, true, Image::FORMAT_RGBA8); + image->fill(Color(1.0, 0.5, 1, 1)); + image->generate_mipmaps(); + + default_gl_textures[DEFAULT_GL_TEXTURE_ANISO] = texture_allocate(); + texture_2d_initialize(default_gl_textures[DEFAULT_GL_TEXTURE_ANISO], image); + } + + { + unsigned char pixel_data[4 * 4 * 4]; + for (int i = 0; i < 16; i++) { + pixel_data[i * 4 + 0] = 0; + pixel_data[i * 4 + 1] = 0; + pixel_data[i * 4 + 2] = 0; + pixel_data[i * 4 + 3] = 0; + } + + default_gl_textures[DEFAULT_GL_TEXTURE_2D_UINT] = texture_allocate(); + Texture texture; + texture.width = 4; + texture.height = 4; + texture.format = Image::FORMAT_RGBA8; + texture.type = Texture::TYPE_2D; + texture.target = GL_TEXTURE_2D; + texture.active = true; + glGenTextures(1, &texture.tex_id); + texture_owner.initialize_rid(default_gl_textures[DEFAULT_GL_TEXTURE_2D_UINT], texture); + + glBindTexture(GL_TEXTURE_2D, texture.tex_id); + glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA8UI, 4, 4, 0, GL_RGBA_INTEGER, GL_UNSIGNED_BYTE, pixel_data); + texture.gl_set_filter(RS::CANVAS_ITEM_TEXTURE_FILTER_NEAREST); + } + { + uint16_t pixel_data[4 * 4]; + for (int i = 0; i < 16; i++) { + pixel_data[i] = Math::make_half_float(1.0f); + } + + default_gl_textures[DEFAULT_GL_TEXTURE_DEPTH] = texture_allocate(); + Texture texture; + texture.width = 4; + texture.height = 4; + texture.format = Image::FORMAT_RGBA8; + texture.type = Texture::TYPE_2D; + texture.target = GL_TEXTURE_2D; + texture.active = true; + glGenTextures(1, &texture.tex_id); + texture_owner.initialize_rid(default_gl_textures[DEFAULT_GL_TEXTURE_DEPTH], texture); + + glBindTexture(GL_TEXTURE_2D, texture.tex_id); + glTexImage2D(GL_TEXTURE_2D, 0, GL_DEPTH_COMPONENT16, 4, 4, 0, GL_DEPTH_COMPONENT, GL_UNSIGNED_SHORT, pixel_data); + texture.gl_set_filter(RS::CANVAS_ITEM_TEXTURE_FILTER_NEAREST); + } + } + + glBindTexture(GL_TEXTURE_2D, 0); + +#ifdef GLES_OVER_GL + glEnable(GL_PROGRAM_POINT_SIZE); +#endif +} + +TextureStorage::~TextureStorage() { + singleton = nullptr; + for (int i = 0; i < DEFAULT_GL_TEXTURE_MAX; i++) { + texture_free(default_gl_textures[i]); + } +} + +//TODO, move back to storage +bool TextureStorage::can_create_resources_async() const { + return false; +} + +/* Canvas Texture API */ + +RID TextureStorage::canvas_texture_allocate() { + return canvas_texture_owner.allocate_rid(); +} + +void TextureStorage::canvas_texture_initialize(RID p_rid) { + canvas_texture_owner.initialize_rid(p_rid); +} + +void TextureStorage::canvas_texture_free(RID p_rid) { + canvas_texture_owner.free(p_rid); +} + +void TextureStorage::canvas_texture_set_channel(RID p_canvas_texture, RS::CanvasTextureChannel p_channel, RID p_texture) { + CanvasTexture *ct = canvas_texture_owner.get_or_null(p_canvas_texture); + switch (p_channel) { + case RS::CANVAS_TEXTURE_CHANNEL_DIFFUSE: { + ct->diffuse = p_texture; + } break; + case RS::CANVAS_TEXTURE_CHANNEL_NORMAL: { + ct->normal_map = p_texture; + } break; + case RS::CANVAS_TEXTURE_CHANNEL_SPECULAR: { + ct->specular = p_texture; + } break; + } +} + +void TextureStorage::canvas_texture_set_shading_parameters(RID p_canvas_texture, const Color &p_specular_color, float p_shininess) { + CanvasTexture *ct = canvas_texture_owner.get_or_null(p_canvas_texture); + ct->specular_color.r = p_specular_color.r; + ct->specular_color.g = p_specular_color.g; + ct->specular_color.b = p_specular_color.b; + ct->specular_color.a = p_shininess; +} + +void TextureStorage::canvas_texture_set_texture_filter(RID p_canvas_texture, RS::CanvasItemTextureFilter p_filter) { + CanvasTexture *ct = canvas_texture_owner.get_or_null(p_canvas_texture); + ct->texture_filter = p_filter; +} + +void TextureStorage::canvas_texture_set_texture_repeat(RID p_canvas_texture, RS::CanvasItemTextureRepeat p_repeat) { + CanvasTexture *ct = canvas_texture_owner.get_or_null(p_canvas_texture); + ct->texture_repeat = p_repeat; +} + +/* CANVAS SHADOW */ + +RID TextureStorage::canvas_light_shadow_buffer_create(int p_width) { + Config *config = Config::get_singleton(); + CanvasLightShadow *cls = memnew(CanvasLightShadow); + + if (p_width > config->max_texture_size) { + p_width = config->max_texture_size; + } + + cls->size = p_width; + cls->height = 16; + + glActiveTexture(GL_TEXTURE0); + + glGenFramebuffers(1, &cls->fbo); + glBindFramebuffer(GL_FRAMEBUFFER, cls->fbo); + + glGenRenderbuffers(1, &cls->depth); + glBindRenderbuffer(GL_RENDERBUFFER, cls->depth); + glRenderbufferStorage(GL_RENDERBUFFER, GL_DEPTH_COMPONENT16, cls->size, cls->height); + glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, GL_RENDERBUFFER, cls->depth); + + glGenTextures(1, &cls->distance); + glBindTexture(GL_TEXTURE_2D, cls->distance); + if (config->use_rgba_2d_shadows) { + glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA8, cls->size, cls->height, 0, GL_RGBA, GL_UNSIGNED_BYTE, nullptr); + } else { + glTexImage2D(GL_TEXTURE_2D, 0, GL_R32F, cls->size, cls->height, 0, GL_RED, GL_FLOAT, nullptr); + } + + glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); + glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); + glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE); + glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE); + glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, cls->distance, 0); + + GLenum status = glCheckFramebufferStatus(GL_FRAMEBUFFER); + //printf("errnum: %x\n",status); + glBindFramebuffer(GL_FRAMEBUFFER, GLES3::TextureStorage::system_fbo); + + if (status != GL_FRAMEBUFFER_COMPLETE) { + memdelete(cls); + ERR_FAIL_COND_V(status != GL_FRAMEBUFFER_COMPLETE, RID()); + } + + return canvas_light_shadow_owner.make_rid(cls); +} + +/* Texture API */ + +Ref<Image> TextureStorage::_get_gl_image_and_format(const Ref<Image> &p_image, Image::Format p_format, Image::Format &r_real_format, GLenum &r_gl_format, GLenum &r_gl_internal_format, GLenum &r_gl_type, bool &r_compressed, bool p_force_decompress) const { + Config *config = Config::get_singleton(); + r_gl_format = 0; + Ref<Image> image = p_image; + r_compressed = false; + r_real_format = p_format; + + bool need_decompress = false; + + switch (p_format) { + case Image::FORMAT_L8: { +#ifdef GLES_OVER_GL + r_gl_internal_format = GL_R8; + r_gl_format = GL_RED; + r_gl_type = GL_UNSIGNED_BYTE; +#else + r_gl_internal_format = GL_LUMINANCE; + r_gl_format = GL_LUMINANCE; + r_gl_type = GL_UNSIGNED_BYTE; +#endif + } break; + case Image::FORMAT_LA8: { +#ifdef GLES_OVER_GL + r_gl_internal_format = GL_RG8; + r_gl_format = GL_RG; + r_gl_type = GL_UNSIGNED_BYTE; +#else + r_gl_internal_format = GL_LUMINANCE_ALPHA; + r_gl_format = GL_LUMINANCE_ALPHA; + r_gl_type = GL_UNSIGNED_BYTE; +#endif + } break; + case Image::FORMAT_R8: { + r_gl_internal_format = GL_R8; + r_gl_format = GL_RED; + r_gl_type = GL_UNSIGNED_BYTE; + + } break; + case Image::FORMAT_RG8: { + r_gl_internal_format = GL_RG8; + r_gl_format = GL_RG; + r_gl_type = GL_UNSIGNED_BYTE; + + } break; + case Image::FORMAT_RGB8: { + r_gl_internal_format = GL_RGB8; + r_gl_format = GL_RGB; + r_gl_type = GL_UNSIGNED_BYTE; + + } break; + case Image::FORMAT_RGBA8: { + r_gl_format = GL_RGBA; + r_gl_internal_format = GL_RGBA8; + r_gl_type = GL_UNSIGNED_BYTE; + + } break; + case Image::FORMAT_RGBA4444: { + r_gl_internal_format = GL_RGBA4; + r_gl_format = GL_RGBA; + r_gl_type = GL_UNSIGNED_SHORT_4_4_4_4; + + } break; + case Image::FORMAT_RF: { + r_gl_internal_format = GL_R32F; + r_gl_format = GL_RED; + r_gl_type = GL_FLOAT; + + } break; + case Image::FORMAT_RGF: { + r_gl_internal_format = GL_RG32F; + r_gl_format = GL_RG; + r_gl_type = GL_FLOAT; + + } break; + case Image::FORMAT_RGBF: { + r_gl_internal_format = GL_RGB32F; + r_gl_format = GL_RGB; + r_gl_type = GL_FLOAT; + + } break; + case Image::FORMAT_RGBAF: { + r_gl_internal_format = GL_RGBA32F; + r_gl_format = GL_RGBA; + r_gl_type = GL_FLOAT; + + } break; + case Image::FORMAT_RH: { + r_gl_internal_format = GL_R16F; + r_gl_format = GL_RED; + r_gl_type = GL_HALF_FLOAT; + } break; + case Image::FORMAT_RGH: { + r_gl_internal_format = GL_RG16F; + r_gl_format = GL_RG; + r_gl_type = GL_HALF_FLOAT; + + } break; + case Image::FORMAT_RGBH: { + r_gl_internal_format = GL_RGB16F; + r_gl_format = GL_RGB; + r_gl_type = GL_HALF_FLOAT; + + } break; + case Image::FORMAT_RGBAH: { + r_gl_internal_format = GL_RGBA16F; + r_gl_format = GL_RGBA; + r_gl_type = GL_HALF_FLOAT; + + } break; + case Image::FORMAT_RGBE9995: { + r_gl_internal_format = GL_RGB9_E5; + r_gl_format = GL_RGB; + r_gl_type = GL_UNSIGNED_INT_5_9_9_9_REV; + + } break; + case Image::FORMAT_DXT1: { + if (config->s3tc_supported) { + r_gl_internal_format = _EXT_COMPRESSED_RGBA_S3TC_DXT1_EXT; + r_gl_format = GL_RGBA; + r_gl_type = GL_UNSIGNED_BYTE; + r_compressed = true; + } else { + need_decompress = true; + } + } break; + case Image::FORMAT_DXT3: { + if (config->s3tc_supported) { + r_gl_internal_format = _EXT_COMPRESSED_RGBA_S3TC_DXT3_EXT; + r_gl_format = GL_RGBA; + r_gl_type = GL_UNSIGNED_BYTE; + r_compressed = true; + } else { + need_decompress = true; + } + } break; + case Image::FORMAT_DXT5: { + if (config->s3tc_supported) { + r_gl_internal_format = _EXT_COMPRESSED_RGBA_S3TC_DXT5_EXT; + r_gl_format = GL_RGBA; + r_gl_type = GL_UNSIGNED_BYTE; + r_compressed = true; + } else { + need_decompress = true; + } + } break; + case Image::FORMAT_RGTC_R: { + if (config->rgtc_supported) { + r_gl_internal_format = _EXT_COMPRESSED_RED_RGTC1_EXT; + r_gl_format = GL_RGBA; + r_gl_type = GL_UNSIGNED_BYTE; + r_compressed = true; + } else { + need_decompress = true; + } + } break; + case Image::FORMAT_RGTC_RG: { + if (config->rgtc_supported) { + r_gl_internal_format = _EXT_COMPRESSED_RED_GREEN_RGTC2_EXT; + r_gl_format = GL_RGBA; + r_gl_type = GL_UNSIGNED_BYTE; + r_compressed = true; + } else { + need_decompress = true; + } + } break; + case Image::FORMAT_BPTC_RGBA: { + if (config->bptc_supported) { + r_gl_internal_format = _EXT_COMPRESSED_RGBA_BPTC_UNORM; + r_gl_format = GL_RGBA; + r_gl_type = GL_UNSIGNED_BYTE; + r_compressed = true; + } else { + need_decompress = true; + } + } break; + case Image::FORMAT_BPTC_RGBF: { + if (config->bptc_supported) { + r_gl_internal_format = _EXT_COMPRESSED_RGB_BPTC_SIGNED_FLOAT; + r_gl_format = GL_RGB; + r_gl_type = GL_FLOAT; + r_compressed = true; + } else { + need_decompress = true; + } + } break; + case Image::FORMAT_BPTC_RGBFU: { + if (config->bptc_supported) { + r_gl_internal_format = _EXT_COMPRESSED_RGB_BPTC_UNSIGNED_FLOAT; + r_gl_format = GL_RGB; + r_gl_type = GL_FLOAT; + r_compressed = true; + } else { + need_decompress = true; + } + } break; + case Image::FORMAT_ETC2_R11: { + if (config->etc2_supported) { + r_gl_internal_format = _EXT_COMPRESSED_R11_EAC; + r_gl_format = GL_RED; + r_gl_type = GL_UNSIGNED_BYTE; + r_compressed = true; + + } else { + need_decompress = true; + } + } break; + case Image::FORMAT_ETC2_R11S: { + if (config->etc2_supported) { + r_gl_internal_format = _EXT_COMPRESSED_SIGNED_R11_EAC; + r_gl_format = GL_RED; + r_gl_type = GL_UNSIGNED_BYTE; + r_compressed = true; + + } else { + need_decompress = true; + } + } break; + case Image::FORMAT_ETC2_RG11: { + if (config->etc2_supported) { + r_gl_internal_format = _EXT_COMPRESSED_RG11_EAC; + r_gl_format = GL_RG; + r_gl_type = GL_UNSIGNED_BYTE; + r_compressed = true; + + } else { + need_decompress = true; + } + } break; + case Image::FORMAT_ETC2_RG11S: { + if (config->etc2_supported) { + r_gl_internal_format = _EXT_COMPRESSED_SIGNED_RG11_EAC; + r_gl_format = GL_RG; + r_gl_type = GL_UNSIGNED_BYTE; + r_compressed = true; + + } else { + need_decompress = true; + } + } break; + case Image::FORMAT_ETC: + case Image::FORMAT_ETC2_RGB8: { + if (config->etc2_supported) { + r_gl_internal_format = _EXT_COMPRESSED_RGB8_ETC2; + r_gl_format = GL_RGB; + r_gl_type = GL_UNSIGNED_BYTE; + r_compressed = true; + + } else { + need_decompress = true; + } + } break; + case Image::FORMAT_ETC2_RGBA8: { + if (config->etc2_supported) { + r_gl_internal_format = _EXT_COMPRESSED_RGBA8_ETC2_EAC; + r_gl_format = GL_RGBA; + r_gl_type = GL_UNSIGNED_BYTE; + r_compressed = true; + + } else { + need_decompress = true; + } + } break; + case Image::FORMAT_ETC2_RGB8A1: { + if (config->etc2_supported) { + r_gl_internal_format = _EXT_COMPRESSED_RGB8_PUNCHTHROUGH_ALPHA1_ETC2; + r_gl_format = GL_RGBA; + r_gl_type = GL_UNSIGNED_BYTE; + r_compressed = true; + + } else { + need_decompress = true; + } + } break; + default: { + ERR_FAIL_V_MSG(Ref<Image>(), "Image Format: " + itos(p_format) + " is not supported by the OpenGL3 Renderer"); + } + } + + if (need_decompress || p_force_decompress) { + if (!image.is_null()) { + image = image->duplicate(); + image->decompress(); + ERR_FAIL_COND_V(image->is_compressed(), image); + switch (image->get_format()) { + case Image::FORMAT_RGB8: { + r_gl_format = GL_RGB; + r_gl_internal_format = GL_RGB; + r_gl_type = GL_UNSIGNED_BYTE; + r_real_format = Image::FORMAT_RGB8; + r_compressed = false; + } break; + case Image::FORMAT_RGBA8: { + r_gl_format = GL_RGBA; + r_gl_internal_format = GL_RGBA; + r_gl_type = GL_UNSIGNED_BYTE; + r_real_format = Image::FORMAT_RGBA8; + r_compressed = false; + } break; + default: { + image->convert(Image::FORMAT_RGBA8); + r_gl_format = GL_RGBA; + r_gl_internal_format = GL_RGBA; + r_gl_type = GL_UNSIGNED_BYTE; + r_real_format = Image::FORMAT_RGBA8; + r_compressed = false; + + } break; + } + } + + return image; + } + + return p_image; +} + +RID TextureStorage::texture_allocate() { + return texture_owner.allocate_rid(); +} + +void TextureStorage::texture_free(RID p_texture) { + Texture *t = texture_owner.get_or_null(p_texture); + ERR_FAIL_COND(!t); + ERR_FAIL_COND(t->is_render_target); + + if (t->canvas_texture) { + memdelete(t->canvas_texture); + } + + if (t->tex_id != 0) { + glDeleteTextures(1, &t->tex_id); + t->tex_id = 0; + } + + if (t->is_proxy && t->proxy_to.is_valid()) { + Texture *proxy_to = texture_owner.get_or_null(t->proxy_to); + if (proxy_to) { + proxy_to->proxies.erase(p_texture); + } + } + + //decal_atlas_remove_texture(p_texture); + + for (int i = 0; i < t->proxies.size(); i++) { + Texture *p = texture_owner.get_or_null(t->proxies[i]); + ERR_CONTINUE(!p); + p->proxy_to = RID(); + p->tex_id = 0; + } + + texture_owner.free(p_texture); +} + +void TextureStorage::texture_2d_initialize(RID p_texture, const Ref<Image> &p_image) { + Texture texture; + texture.width = p_image->get_width(); + texture.height = p_image->get_height(); + texture.alloc_width = texture.width; + texture.alloc_height = texture.height; + texture.mipmaps = p_image->get_mipmap_count(); + texture.format = p_image->get_format(); + texture.type = Texture::TYPE_2D; + texture.target = GL_TEXTURE_2D; + _get_gl_image_and_format(Ref<Image>(), texture.format, texture.real_format, texture.gl_format_cache, texture.gl_internal_format_cache, texture.gl_type_cache, texture.compressed, false); + //texture.total_data_size = p_image->get_image_data_size(); // verify that this returns size in bytes + texture.active = true; + glGenTextures(1, &texture.tex_id); + texture_owner.initialize_rid(p_texture, texture); + texture_set_data(p_texture, p_image); +} + +void TextureStorage::texture_2d_layered_initialize(RID p_texture, const Vector<Ref<Image>> &p_layers, RS::TextureLayeredType p_layered_type) { + texture_owner.initialize_rid(p_texture, Texture()); +} + +void TextureStorage::texture_3d_initialize(RID p_texture, Image::Format, int p_width, int p_height, int p_depth, bool p_mipmaps, const Vector<Ref<Image>> &p_data) { + texture_owner.initialize_rid(p_texture, Texture()); +} + +// Called internally when texture_proxy_create(p_base) is called. +// Note: p_base is the root and p_texture is the proxy. +void TextureStorage::texture_proxy_initialize(RID p_texture, RID p_base) { + Texture *texture = texture_owner.get_or_null(p_base); + ERR_FAIL_COND(!texture); + Texture proxy_tex; + proxy_tex.copy_from(*texture); + proxy_tex.proxy_to = p_base; + proxy_tex.is_render_target = false; + proxy_tex.is_proxy = true; + proxy_tex.proxies.clear(); + texture->proxies.push_back(p_texture); + texture_owner.initialize_rid(p_texture, proxy_tex); +} + +void TextureStorage::texture_2d_update(RID p_texture, const Ref<Image> &p_image, int p_layer) { + // only 1 layer so far + texture_set_data(p_texture, p_image); +#ifdef TOOLS_ENABLED + Texture *tex = texture_owner.get_or_null(p_texture); + + tex->image_cache_2d.unref(); +#endif +} + +void TextureStorage::texture_proxy_update(RID p_texture, RID p_proxy_to) { +} + +void TextureStorage::texture_2d_placeholder_initialize(RID p_texture) { + //this could be better optimized to reuse an existing image , done this way + //for now to get it working + Ref<Image> image; + image.instantiate(); + image->create(4, 4, false, Image::FORMAT_RGBA8); + image->fill(Color(1, 0, 1, 1)); + + texture_2d_initialize(p_texture, image); +} + +void TextureStorage::texture_2d_layered_placeholder_initialize(RID p_texture, RenderingServer::TextureLayeredType p_layered_type) { + //this could be better optimized to reuse an existing image , done this way + //for now to get it working + Ref<Image> image; + image.instantiate(); + image->create(4, 4, false, Image::FORMAT_RGBA8); + image->fill(Color(1, 0, 1, 1)); + + Vector<Ref<Image>> images; + if (p_layered_type == RS::TEXTURE_LAYERED_2D_ARRAY) { + images.push_back(image); + } else { + //cube + for (int i = 0; i < 6; i++) { + images.push_back(image); + } + } + + texture_2d_layered_initialize(p_texture, images, p_layered_type); +} + +void TextureStorage::texture_3d_placeholder_initialize(RID p_texture) { + //this could be better optimized to reuse an existing image , done this way + //for now to get it working + Ref<Image> image; + image.instantiate(); + image->create(4, 4, false, Image::FORMAT_RGBA8); + image->fill(Color(1, 0, 1, 1)); + + Vector<Ref<Image>> images; + //cube + for (int i = 0; i < 4; i++) { + images.push_back(image); + } + + texture_3d_initialize(p_texture, Image::FORMAT_RGBA8, 4, 4, 4, false, images); +} + +Ref<Image> TextureStorage::texture_2d_get(RID p_texture) const { + Texture *texture = texture_owner.get_or_null(p_texture); + ERR_FAIL_COND_V(!texture, Ref<Image>()); + +#ifdef TOOLS_ENABLED + if (texture->image_cache_2d.is_valid() && !texture->is_render_target) { + return texture->image_cache_2d; + } +#endif + +#ifdef GLES_OVER_GL + // OpenGL 3.3 supports glGetTexImage which is faster and simpler than glReadPixels. + Vector<uint8_t> data; + + int data_size = Image::get_image_data_size(texture->alloc_width, texture->alloc_height, texture->real_format, texture->mipmaps > 1); + + data.resize(data_size * 2); //add some memory at the end, just in case for buggy drivers + uint8_t *w = data.ptrw(); + + glActiveTexture(GL_TEXTURE0); + + glBindTexture(texture->target, texture->tex_id); + + glBindBuffer(GL_PIXEL_PACK_BUFFER, 0); + + for (int i = 0; i < texture->mipmaps; i++) { + int ofs = Image::get_image_mipmap_offset(texture->alloc_width, texture->alloc_height, texture->real_format, i); + + if (texture->compressed) { + glPixelStorei(GL_PACK_ALIGNMENT, 4); + glGetCompressedTexImage(texture->target, i, &w[ofs]); + + } else { + glPixelStorei(GL_PACK_ALIGNMENT, 1); + + glGetTexImage(texture->target, i, texture->gl_format_cache, texture->gl_type_cache, &w[ofs]); + } + } + + data.resize(data_size); + + ERR_FAIL_COND_V(data.size() == 0, Ref<Image>()); + Ref<Image> image; + image.instantiate(); + image->create(texture->width, texture->height, texture->mipmaps > 1, texture->real_format, data); + ERR_FAIL_COND_V(image->is_empty(), Ref<Image>()); + if (texture->format != texture->real_format) { + image->convert(texture->format); + } +#else + // Support for Web and Mobile will come later. + Ref<Image> image; +#endif + +#ifdef TOOLS_ENABLED + if (Engine::get_singleton()->is_editor_hint() && !texture->is_render_target) { + texture->image_cache_2d = image; + } +#endif + + return image; +} + +void TextureStorage::texture_replace(RID p_texture, RID p_by_texture) { + Texture *tex_to = texture_owner.get_or_null(p_texture); + ERR_FAIL_COND(!tex_to); + ERR_FAIL_COND(tex_to->is_proxy); //can't replace proxy + Texture *tex_from = texture_owner.get_or_null(p_by_texture); + ERR_FAIL_COND(!tex_from); + ERR_FAIL_COND(tex_from->is_proxy); //can't replace proxy + + if (tex_to == tex_from) { + return; + } + + if (tex_to->canvas_texture) { + memdelete(tex_to->canvas_texture); + tex_to->canvas_texture = nullptr; + } + + if (tex_to->tex_id) { + glDeleteTextures(1, &tex_to->tex_id); + tex_to->tex_id = 0; + } + + Vector<RID> proxies_to_update = tex_to->proxies; + Vector<RID> proxies_to_redirect = tex_from->proxies; + + tex_to->copy_from(*tex_from); + + tex_to->proxies = proxies_to_update; //restore proxies, so they can be updated + + if (tex_to->canvas_texture) { + tex_to->canvas_texture->diffuse = p_texture; //update + } + + for (int i = 0; i < proxies_to_update.size(); i++) { + texture_proxy_update(proxies_to_update[i], p_texture); + } + for (int i = 0; i < proxies_to_redirect.size(); i++) { + texture_proxy_update(proxies_to_redirect[i], p_texture); + } + //delete last, so proxies can be updated + texture_owner.free(p_by_texture); + + //decal_atlas_mark_dirty_on_texture(p_texture); +} + +void TextureStorage::texture_set_size_override(RID p_texture, int p_width, int p_height) { + Texture *texture = texture_owner.get_or_null(p_texture); + + ERR_FAIL_COND(!texture); + ERR_FAIL_COND(texture->is_render_target); + + ERR_FAIL_COND(p_width <= 0 || p_width > 16384); + ERR_FAIL_COND(p_height <= 0 || p_height > 16384); + //real texture size is in alloc width and height + texture->width = p_width; + texture->height = p_height; +} + +void TextureStorage::texture_set_path(RID p_texture, const String &p_path) { + Texture *texture = texture_owner.get_or_null(p_texture); + ERR_FAIL_COND(!texture); + + texture->path = p_path; +} + +String TextureStorage::texture_get_path(RID p_texture) const { + Texture *texture = texture_owner.get_or_null(p_texture); + ERR_FAIL_COND_V(!texture, ""); + + return texture->path; +} + +void TextureStorage::texture_set_detect_3d_callback(RID p_texture, RS::TextureDetectCallback p_callback, void *p_userdata) { + Texture *texture = texture_owner.get_or_null(p_texture); + ERR_FAIL_COND(!texture); + + texture->detect_3d_callback = p_callback; + texture->detect_3d_callback_ud = p_userdata; +} + +void TextureStorage::texture_set_detect_srgb_callback(RID p_texture, RS::TextureDetectCallback p_callback, void *p_userdata) { +} + +void TextureStorage::texture_set_detect_normal_callback(RID p_texture, RS::TextureDetectCallback p_callback, void *p_userdata) { + Texture *texture = texture_owner.get_or_null(p_texture); + ERR_FAIL_COND(!texture); + + texture->detect_normal_callback = p_callback; + texture->detect_normal_callback_ud = p_userdata; +} + +void TextureStorage::texture_set_detect_roughness_callback(RID p_texture, RS::TextureDetectRoughnessCallback p_callback, void *p_userdata) { + Texture *texture = texture_owner.get_or_null(p_texture); + ERR_FAIL_COND(!texture); + + texture->detect_roughness_callback = p_callback; + texture->detect_roughness_callback_ud = p_userdata; +} + +void TextureStorage::texture_debug_usage(List<RS::TextureInfo> *r_info) { + List<RID> textures; + texture_owner.get_owned_list(&textures); + + for (List<RID>::Element *E = textures.front(); E; E = E->next()) { + Texture *t = texture_owner.get_or_null(E->get()); + if (!t) { + continue; + } + RS::TextureInfo tinfo; + tinfo.path = t->path; + tinfo.format = t->format; + tinfo.width = t->alloc_width; + tinfo.height = t->alloc_height; + tinfo.depth = 0; + tinfo.bytes = t->total_data_size; + r_info->push_back(tinfo); + } +} + +void TextureStorage::texture_set_force_redraw_if_visible(RID p_texture, bool p_enable) { + Texture *texture = texture_owner.get_or_null(p_texture); + ERR_FAIL_COND(!texture); + + texture->redraw_if_visible = p_enable; +} + +Size2 TextureStorage::texture_size_with_proxy(RID p_texture) { + const Texture *texture = texture_owner.get_or_null(p_texture); + ERR_FAIL_COND_V(!texture, Size2()); + if (texture->is_proxy) { + const Texture *proxy = texture_owner.get_or_null(texture->proxy_to); + return Size2(proxy->width, proxy->height); + } else { + return Size2(texture->width, texture->height); + } +} + +void TextureStorage::texture_set_data(RID p_texture, const Ref<Image> &p_image, int p_layer) { + Texture *texture = texture_owner.get_or_null(p_texture); + + ERR_FAIL_COND(!texture); + if (texture->target == GL_TEXTURE_3D) { + // Target is set to a 3D texture or array texture, exit early to avoid spamming errors + return; + } + ERR_FAIL_COND(!texture->active); + ERR_FAIL_COND(texture->is_render_target); + ERR_FAIL_COND(p_image.is_null()); + ERR_FAIL_COND(texture->format != p_image->get_format()); + + ERR_FAIL_COND(!p_image->get_width()); + ERR_FAIL_COND(!p_image->get_height()); + + // ERR_FAIL_COND(texture->type == RS::TEXTURE_TYPE_EXTERNAL); + + GLenum type; + GLenum format; + GLenum internal_format; + bool compressed = false; + + // print_line("texture_set_data width " + itos (p_image->get_width()) + " height " + itos(p_image->get_height())); + + Image::Format real_format; + Ref<Image> img = _get_gl_image_and_format(p_image, p_image->get_format(), real_format, format, internal_format, type, compressed, texture->resize_to_po2); + ERR_FAIL_COND(img.is_null()); + if (texture->resize_to_po2) { + if (p_image->is_compressed()) { + ERR_PRINT("Texture '" + texture->path + "' is required to be a power of 2 because it uses either mipmaps or repeat, so it was decompressed. This will hurt performance and memory usage."); + } + + if (img == p_image) { + img = img->duplicate(); + } + img->resize_to_po2(false); + } + + GLenum blit_target = (texture->target == GL_TEXTURE_CUBE_MAP) ? _cube_side_enum[p_layer] : GL_TEXTURE_2D; + + Vector<uint8_t> read = img->get_data(); + + glActiveTexture(GL_TEXTURE0); + glBindTexture(texture->target, texture->tex_id); + + // set filtering and repeat state to default + texture->gl_set_filter(RS::CANVAS_ITEM_TEXTURE_FILTER_NEAREST); + texture->gl_set_repeat(RS::CANVAS_ITEM_TEXTURE_REPEAT_ENABLED); + + //set swizle for older format compatibility +#ifdef GLES_OVER_GL + switch (texture->format) { + case Image::FORMAT_L8: { + glTexParameteri(texture->target, GL_TEXTURE_SWIZZLE_R, GL_RED); + glTexParameteri(texture->target, GL_TEXTURE_SWIZZLE_G, GL_RED); + glTexParameteri(texture->target, GL_TEXTURE_SWIZZLE_B, GL_RED); + glTexParameteri(texture->target, GL_TEXTURE_SWIZZLE_A, GL_ONE); + + } break; + case Image::FORMAT_LA8: { + glTexParameteri(texture->target, GL_TEXTURE_SWIZZLE_R, GL_RED); + glTexParameteri(texture->target, GL_TEXTURE_SWIZZLE_G, GL_RED); + glTexParameteri(texture->target, GL_TEXTURE_SWIZZLE_B, GL_RED); + glTexParameteri(texture->target, GL_TEXTURE_SWIZZLE_A, GL_GREEN); + } break; + default: { + glTexParameteri(texture->target, GL_TEXTURE_SWIZZLE_R, GL_RED); + glTexParameteri(texture->target, GL_TEXTURE_SWIZZLE_G, GL_GREEN); + glTexParameteri(texture->target, GL_TEXTURE_SWIZZLE_B, GL_BLUE); + glTexParameteri(texture->target, GL_TEXTURE_SWIZZLE_A, GL_ALPHA); + + } break; + } +#endif + + int mipmaps = img->has_mipmaps() ? img->get_mipmap_count() + 1 : 1; + + int w = img->get_width(); + int h = img->get_height(); + + int tsize = 0; + + for (int i = 0; i < mipmaps; i++) { + int size, ofs; + img->get_mipmap_offset_and_size(i, ofs, size); + + if (compressed) { + glPixelStorei(GL_UNPACK_ALIGNMENT, 4); + + int bw = w; + int bh = h; + + glCompressedTexImage2D(blit_target, i, internal_format, bw, bh, 0, size, &read[ofs]); + } else { + glPixelStorei(GL_UNPACK_ALIGNMENT, 1); + glTexImage2D(blit_target, i, internal_format, w, h, 0, format, type, &read[ofs]); + } + + tsize += size; + + w = MAX(1, w >> 1); + h = MAX(1, h >> 1); + } + + // info.texture_mem -= texture->total_data_size; // TODO make this work again!! + texture->total_data_size = tsize; + // info.texture_mem += texture->total_data_size; // TODO make this work again!! + + // printf("texture: %i x %i - size: %i - total: %i\n", texture->width, texture->height, tsize, info.texture_mem); + + texture->stored_cube_sides |= (1 << p_layer); + + texture->mipmaps = mipmaps; +} + +void TextureStorage::texture_set_data_partial(RID p_texture, const Ref<Image> &p_image, int src_x, int src_y, int src_w, int src_h, int dst_x, int dst_y, int p_dst_mip, int p_layer) { + ERR_PRINT("Not implemented yet, sorry :("); +} + +Image::Format TextureStorage::texture_get_format(RID p_texture) const { + Texture *texture = texture_owner.get_or_null(p_texture); + + ERR_FAIL_COND_V(!texture, Image::FORMAT_L8); + + return texture->format; +} + +uint32_t TextureStorage::texture_get_texid(RID p_texture) const { + Texture *texture = texture_owner.get_or_null(p_texture); + + ERR_FAIL_COND_V(!texture, 0); + + return texture->tex_id; +} + +uint32_t TextureStorage::texture_get_width(RID p_texture) const { + Texture *texture = texture_owner.get_or_null(p_texture); + + ERR_FAIL_COND_V(!texture, 0); + + return texture->width; +} + +uint32_t TextureStorage::texture_get_height(RID p_texture) const { + Texture *texture = texture_owner.get_or_null(p_texture); + + ERR_FAIL_COND_V(!texture, 0); + + return texture->height; +} + +uint32_t TextureStorage::texture_get_depth(RID p_texture) const { + Texture *texture = texture_owner.get_or_null(p_texture); + + ERR_FAIL_COND_V(!texture, 0); + + return texture->depth; +} + +void TextureStorage::texture_bind(RID p_texture, uint32_t p_texture_no) { + Texture *texture = texture_owner.get_or_null(p_texture); + + ERR_FAIL_COND(!texture); + + glActiveTexture(GL_TEXTURE0 + p_texture_no); + glBindTexture(texture->target, texture->tex_id); +} + +RID TextureStorage::texture_create_radiance_cubemap(RID p_source, int p_resolution) const { + return RID(); +} + +/* DECAL API */ + +RID TextureStorage::decal_allocate() { + return RID(); +} + +void TextureStorage::decal_initialize(RID p_rid) { +} + +void TextureStorage::decal_set_extents(RID p_decal, const Vector3 &p_extents) { +} + +void TextureStorage::decal_set_texture(RID p_decal, RS::DecalTexture p_type, RID p_texture) { +} + +void TextureStorage::decal_set_emission_energy(RID p_decal, float p_energy) { +} + +void TextureStorage::decal_set_albedo_mix(RID p_decal, float p_mix) { +} + +void TextureStorage::decal_set_modulate(RID p_decal, const Color &p_modulate) { +} + +void TextureStorage::decal_set_cull_mask(RID p_decal, uint32_t p_layers) { +} + +void TextureStorage::decal_set_distance_fade(RID p_decal, bool p_enabled, float p_begin, float p_length) { +} + +void TextureStorage::decal_set_fade(RID p_decal, float p_above, float p_below) { +} + +void TextureStorage::decal_set_normal_fade(RID p_decal, float p_fade) { +} + +AABB TextureStorage::decal_get_aabb(RID p_decal) const { + return AABB(); +} + +/* RENDER TARGET API */ + +GLuint TextureStorage::system_fbo = 0; + +void TextureStorage::_update_render_target(RenderTarget *rt) { + // do not allocate a render target with no size + if (rt->size.x <= 0 || rt->size.y <= 0) { + return; + } + + // do not allocate a render target that is attached to the screen + if (rt->direct_to_screen) { + rt->fbo = system_fbo; + return; + } + + rt->color_internal_format = rt->is_transparent ? GL_RGBA8 : GL_RGB10_A2; + rt->color_format = GL_RGBA; + rt->color_type = rt->is_transparent ? GL_BYTE : GL_UNSIGNED_INT_2_10_10_10_REV; + rt->image_format = Image::FORMAT_RGBA8; + + glDisable(GL_SCISSOR_TEST); + glColorMask(1, 1, 1, 1); + glDepthMask(GL_FALSE); + + { + /* Front FBO */ + + Texture *texture = get_texture(rt->texture); + ERR_FAIL_COND(!texture); + + // framebuffer + glGenFramebuffers(1, &rt->fbo); + glBindFramebuffer(GL_FRAMEBUFFER, rt->fbo); + + // color + glGenTextures(1, &rt->color); + glBindTexture(GL_TEXTURE_2D, rt->color); + + glTexImage2D(GL_TEXTURE_2D, 0, rt->color_internal_format, rt->size.x, rt->size.y, 0, rt->color_format, rt->color_type, nullptr); + + glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); + glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); + + glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE); + glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE); + + glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, rt->color, 0); + + GLenum status = glCheckFramebufferStatus(GL_FRAMEBUFFER); + + if (status != GL_FRAMEBUFFER_COMPLETE) { + glDeleteFramebuffers(1, &rt->fbo); + glDeleteTextures(1, &rt->color); + rt->fbo = 0; + rt->size.x = 0; + rt->size.y = 0; + rt->color = 0; + texture->tex_id = 0; + texture->active = false; + WARN_PRINT("Could not create render target, status: " + get_framebuffer_error(status)); + return; + } + + texture->format = rt->image_format; + texture->real_format = rt->image_format; + texture->type = Texture::TYPE_2D; + texture->target = GL_TEXTURE_2D; + texture->gl_format_cache = rt->color_format; + texture->gl_type_cache = GL_UNSIGNED_BYTE; + texture->gl_internal_format_cache = rt->color_internal_format; + texture->tex_id = rt->color; + texture->width = rt->size.x; + texture->alloc_width = rt->size.x; + texture->height = rt->size.y; + texture->alloc_height = rt->size.y; + texture->active = true; + } + + glClearColor(0, 0, 0, 0); + glClear(GL_COLOR_BUFFER_BIT); + glBindFramebuffer(GL_FRAMEBUFFER, system_fbo); +} + +void TextureStorage::_create_render_target_backbuffer(RenderTarget *rt) { + ERR_FAIL_COND_MSG(rt->backbuffer_fbo != 0, "Cannot allocate RenderTarget backbuffer: already initialized."); + ERR_FAIL_COND(rt->direct_to_screen); + // Allocate mipmap chains for full screen blur + // Limit mipmaps so smallest is 32x32 to avoid unnecessary framebuffer switches + int count = MAX(1, Image::get_image_required_mipmaps(rt->size.x, rt->size.y, Image::FORMAT_RGBA8) - 4); + if (rt->size.x > 40 && rt->size.y > 40) { + GLsizei width = rt->size.x; + GLsizei height = rt->size.y; + + rt->mipmap_count = count; + + glGenTextures(1, &rt->backbuffer); + glBindTexture(GL_TEXTURE_2D, rt->backbuffer); + + for (int l = 0; l < count; l++) { + glTexImage2D(GL_TEXTURE_2D, l, rt->color_internal_format, width, height, 0, rt->color_format, rt->color_type, nullptr); + width = MAX(1, (width / 2)); + height = MAX(1, (height / 2)); + } + + glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_BASE_LEVEL, 0); + glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAX_LEVEL, count - 1); + + glGenFramebuffers(1, &rt->backbuffer_fbo); + glBindFramebuffer(GL_FRAMEBUFFER, rt->backbuffer_fbo); + + glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, rt->backbuffer, 0); + + GLenum status = glCheckFramebufferStatus(GL_FRAMEBUFFER); + if (status != GL_FRAMEBUFFER_COMPLETE) { + WARN_PRINT_ONCE("Cannot allocate mipmaps for canvas screen blur. Status: " + get_framebuffer_error(status)); + glBindFramebuffer(GL_FRAMEBUFFER, system_fbo); + return; + } + + // Initialize all levels to opaque Magenta. + for (int j = 0; j < count; j++) { + glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, rt->backbuffer, j); + glClearColor(1.0, 0.0, 1.0, 1.0); + glClear(GL_COLOR_BUFFER_BIT); + } + + glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, rt->backbuffer, 0); + + glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); + glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR); + glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE); + glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE); + } +} + +void TextureStorage::_clear_render_target(RenderTarget *rt) { + // there is nothing to clear when DIRECT_TO_SCREEN is used + if (rt->direct_to_screen) { + return; + } + + if (rt->fbo) { + glDeleteFramebuffers(1, &rt->fbo); + glDeleteTextures(1, &rt->color); + rt->fbo = 0; + rt->color = 0; + } + /* + if (rt->external.fbo != 0) { + // free this + glDeleteFramebuffers(1, &rt->external.fbo); + + // clean up our texture + Texture *t = get_texture(rt->external.texture); + t->alloc_height = 0; + t->alloc_width = 0; + t->width = 0; + t->height = 0; + t->active = false; + texture_free(rt->external.texture); + memdelete(t); + + rt->external.fbo = 0; + } + */ + + Texture *tex = get_texture(rt->texture); + tex->alloc_height = 0; + tex->alloc_width = 0; + tex->width = 0; + tex->height = 0; + tex->active = false; + + if (rt->backbuffer_fbo != 0) { + glDeleteFramebuffers(1, &rt->backbuffer_fbo); + glDeleteTextures(1, &rt->backbuffer); + rt->backbuffer = 0; + rt->backbuffer_fbo = 0; + } +} + +RID TextureStorage::render_target_create() { + RenderTarget render_target; + //render_target.was_used = false; + render_target.clear_requested = false; + + Texture t; + t.active = true; + t.render_target = &render_target; + t.is_render_target = true; + + render_target.texture = texture_owner.make_rid(t); + _update_render_target(&render_target); + return render_target_owner.make_rid(render_target); +} + +void TextureStorage::render_target_free(RID p_rid) { + RenderTarget *rt = render_target_owner.get_or_null(p_rid); + _clear_render_target(rt); + + Texture *t = get_texture(rt->texture); + if (t) { + t->is_render_target = false; + texture_free(rt->texture); + //memdelete(t); + } + render_target_owner.free(p_rid); +} + +void TextureStorage::render_target_set_position(RID p_render_target, int p_x, int p_y) { + RenderTarget *rt = render_target_owner.get_or_null(p_render_target); + ERR_FAIL_COND(!rt); + + rt->position = Point2i(p_x, p_y); +} + +void TextureStorage::render_target_set_size(RID p_render_target, int p_width, int p_height, uint32_t p_view_count) { + RenderTarget *rt = render_target_owner.get_or_null(p_render_target); + ERR_FAIL_COND(!rt); + + if (p_width == rt->size.x && p_height == rt->size.y) { + return; + } + + _clear_render_target(rt); + + rt->size = Size2i(p_width, p_height); + + _update_render_target(rt); +} + +// TODO: convert to Size2i internally +Size2i TextureStorage::render_target_get_size(RID p_render_target) { + RenderTarget *rt = render_target_owner.get_or_null(p_render_target); + ERR_FAIL_COND_V(!rt, Size2()); + + return rt->size; +} + +RID TextureStorage::render_target_get_texture(RID p_render_target) { + RenderTarget *rt = render_target_owner.get_or_null(p_render_target); + ERR_FAIL_COND_V(!rt, RID()); + + if (rt->external.fbo == 0) { + return rt->texture; + } else { + return rt->external.texture; + } +} + +void TextureStorage::render_target_set_external_texture(RID p_render_target, unsigned int p_texture_id) { + RenderTarget *rt = render_target_owner.get_or_null(p_render_target); + ERR_FAIL_COND(!rt); + + if (p_texture_id == 0) { + if (rt->external.fbo != 0) { + // free this + glDeleteFramebuffers(1, &rt->external.fbo); + + // and this + if (rt->external.depth != 0) { + glDeleteRenderbuffers(1, &rt->external.depth); + } + + // clean up our texture + Texture *t = get_texture(rt->external.texture); + t->alloc_height = 0; + t->alloc_width = 0; + t->width = 0; + t->height = 0; + t->active = false; + texture_free(rt->external.texture); + //memdelete(t); + + rt->external.fbo = 0; + rt->external.color = 0; + rt->external.depth = 0; + } + } else { + Texture *t; + + if (rt->external.fbo == 0) { + // create our fbo + glGenFramebuffers(1, &rt->external.fbo); + glBindFramebuffer(GL_FRAMEBUFFER, rt->external.fbo); + + // allocate a texture + t = memnew(Texture); + + t->type = Texture::TYPE_2D; + t->width = 0; + t->height = 0; + t->alloc_height = 0; + t->alloc_width = 0; + t->format = Image::FORMAT_RGBA8; + t->target = GL_TEXTURE_2D; + t->gl_format_cache = 0; + t->gl_internal_format_cache = 0; + t->gl_type_cache = 0; + t->total_data_size = 0; + t->mipmaps = 1; + t->active = true; + t->tex_id = 0; + t->render_target = rt; + t->is_render_target = true; + + //rt->external.texture = make_rid(t); + + } else { + // bind our frame buffer + glBindFramebuffer(GL_FRAMEBUFFER, rt->external.fbo); + + // find our texture + t = get_texture(rt->external.texture); + } + + // set our texture + t->tex_id = p_texture_id; + rt->external.color = p_texture_id; + + // size shouldn't be different + t->width = rt->size.x; + t->height = rt->size.y; + t->alloc_height = rt->size.x; + t->alloc_width = rt->size.y; + + // Switch our texture on our frame buffer + { + // set our texture as the destination for our framebuffer + glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, p_texture_id, 0); + } + + // check status and unbind + GLenum status = glCheckFramebufferStatus(GL_FRAMEBUFFER); + glBindFramebuffer(GL_FRAMEBUFFER, GLES3::TextureStorage::system_fbo); + + if (status != GL_FRAMEBUFFER_COMPLETE) { + WARN_PRINT("framebuffer fail, status: " + get_framebuffer_error(status)); + } + + ERR_FAIL_COND(status != GL_FRAMEBUFFER_COMPLETE); + } +} + +void TextureStorage::render_target_set_transparent(RID p_render_target, bool p_transparent) { + RenderTarget *rt = render_target_owner.get_or_null(p_render_target); + ERR_FAIL_COND(!rt); + + rt->is_transparent = p_transparent; + + _clear_render_target(rt); + _update_render_target(rt); +} + +void TextureStorage::render_target_set_direct_to_screen(RID p_render_target, bool p_direct_to_screen) { + RenderTarget *rt = render_target_owner.get_or_null(p_render_target); + ERR_FAIL_COND(!rt); + + if (p_direct_to_screen == rt->direct_to_screen) { + return; + } + // When setting DIRECT_TO_SCREEN, you need to clear before the value is set, but allocate after as + // those functions change how they operate depending on the value of DIRECT_TO_SCREEN + _clear_render_target(rt); + rt->direct_to_screen = p_direct_to_screen; + _update_render_target(rt); +} + +bool TextureStorage::render_target_was_used(RID p_render_target) { + RenderTarget *rt = render_target_owner.get_or_null(p_render_target); + ERR_FAIL_COND_V(!rt, false); + + return rt->used_in_frame; +} + +void TextureStorage::render_target_clear_used(RID p_render_target) { + RenderTarget *rt = render_target_owner.get_or_null(p_render_target); + ERR_FAIL_COND(!rt); + + rt->used_in_frame = false; +} + +void TextureStorage::render_target_request_clear(RID p_render_target, const Color &p_clear_color) { + RenderTarget *rt = render_target_owner.get_or_null(p_render_target); + ERR_FAIL_COND(!rt); + rt->clear_requested = true; + rt->clear_color = p_clear_color; +} + +bool TextureStorage::render_target_is_clear_requested(RID p_render_target) { + RenderTarget *rt = render_target_owner.get_or_null(p_render_target); + ERR_FAIL_COND_V(!rt, false); + return rt->clear_requested; +} +Color TextureStorage::render_target_get_clear_request_color(RID p_render_target) { + RenderTarget *rt = render_target_owner.get_or_null(p_render_target); + ERR_FAIL_COND_V(!rt, Color()); + return rt->clear_color; +} + +void TextureStorage::render_target_disable_clear_request(RID p_render_target) { + RenderTarget *rt = render_target_owner.get_or_null(p_render_target); + ERR_FAIL_COND(!rt); + rt->clear_requested = false; +} + +void TextureStorage::render_target_do_clear_request(RID p_render_target) { + RenderTarget *rt = render_target_owner.get_or_null(p_render_target); + ERR_FAIL_COND(!rt); + if (!rt->clear_requested) { + return; + } + + glClearBufferfv(GL_COLOR, 0, rt->clear_color.components); + rt->clear_requested = false; +} + +void TextureStorage::render_target_set_sdf_size_and_scale(RID p_render_target, RS::ViewportSDFOversize p_size, RS::ViewportSDFScale p_scale) { +} + +Rect2i TextureStorage::render_target_get_sdf_rect(RID p_render_target) const { + return Rect2i(); +} + +void TextureStorage::render_target_mark_sdf_enabled(RID p_render_target, bool p_enabled) { +} + +void TextureStorage::render_target_copy_to_back_buffer(RID p_render_target, const Rect2i &p_region, bool p_gen_mipmaps) { + RenderTarget *rt = render_target_owner.get_or_null(p_render_target); + ERR_FAIL_COND(!rt); + ERR_FAIL_COND(rt->direct_to_screen); + + if (rt->backbuffer_fbo == 0) { + _create_render_target_backbuffer(rt); + } + + Rect2i region; + if (p_region == Rect2i()) { + region.size = rt->size; + } else { + region = Rect2i(Size2i(), rt->size).intersection(p_region); + if (region.size == Size2i()) { + return; //nothing to do + } + } + + glDisable(GL_BLEND); + //single texture copy for backbuffer + glBindFramebuffer(GL_FRAMEBUFFER, rt->backbuffer_fbo); + glActiveTexture(GL_TEXTURE0); + glBindTexture(GL_TEXTURE_2D, rt->color); + GLES3::CopyEffects::get_singleton()->copy_screen(); + + if (p_gen_mipmaps) { + GLES3::CopyEffects::get_singleton()->bilinear_blur(rt->backbuffer, rt->mipmap_count, region); + glBindFramebuffer(GL_FRAMEBUFFER, rt->backbuffer_fbo); + } + + glEnable(GL_BLEND); // 2D almost always uses blend. +} + +void TextureStorage::render_target_clear_back_buffer(RID p_render_target, const Rect2i &p_region, const Color &p_color) { + RenderTarget *rt = render_target_owner.get_or_null(p_render_target); + ERR_FAIL_COND(!rt); + ERR_FAIL_COND(rt->direct_to_screen); + + if (rt->backbuffer_fbo == 0) { + _create_render_target_backbuffer(rt); + } + + Rect2i region; + if (p_region == Rect2i()) { + // Just do a full screen clear; + glBindFramebuffer(GL_FRAMEBUFFER, rt->backbuffer_fbo); + glClearColor(p_color.r, p_color.g, p_color.b, p_color.a); + glClear(GL_COLOR_BUFFER_BIT); + } else { + region = Rect2i(Size2i(), rt->size).intersection(p_region); + if (region.size == Size2i()) { + return; //nothing to do + } + glBindFramebuffer(GL_FRAMEBUFFER, rt->backbuffer_fbo); + GLES3::CopyEffects::get_singleton()->set_color(p_color, region); + } +} + +void TextureStorage::render_target_gen_back_buffer_mipmaps(RID p_render_target, const Rect2i &p_region) { + RenderTarget *rt = render_target_owner.get_or_null(p_render_target); + ERR_FAIL_COND(!rt); + + if (rt->backbuffer_fbo == 0) { + _create_render_target_backbuffer(rt); + } + + Rect2i region; + if (p_region == Rect2i()) { + region.size = rt->size; + } else { + region = Rect2i(Size2i(), rt->size).intersection(p_region); + if (region.size == Size2i()) { + return; //nothing to do + } + } + + GLES3::CopyEffects::get_singleton()->bilinear_blur(rt->backbuffer, rt->mipmap_count, region); + glBindFramebuffer(GL_FRAMEBUFFER, rt->backbuffer_fbo); +} + +#endif // GLES3_ENABLED |