480 lines
12 KiB
C++
480 lines
12 KiB
C++
#include "pch.h"
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#include "log.h"
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#include "texture.h"
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#include "util.h"
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#include "app.h"
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#include "renderer_gl/opengl_capabilities.h"
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#include <cstdint>
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namespace {
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[[nodiscard]] GLenum texture_2d_target() noexcept
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{
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return static_cast<GLenum>(pp::renderer::gl::texture_2d_target());
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}
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[[nodiscard]] GLenum texture_cube_map_target() noexcept
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{
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return static_cast<GLenum>(pp::renderer::gl::texture_cube_map_target());
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}
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[[nodiscard]] GLenum framebuffer_target() noexcept
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{
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return static_cast<GLenum>(pp::renderer::gl::framebuffer_target());
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}
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[[nodiscard]] GLenum draw_framebuffer_binding_query() noexcept
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{
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return static_cast<GLenum>(pp::renderer::gl::draw_framebuffer_binding_query());
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}
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}
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std::map<uint16_t, Texture2D> TextureManager::m_textures;
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std::array<int, 6> TextureCube::m_faces_map {
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static_cast<int>(pp::renderer::gl::cube_face_texture_target(0U)),
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static_cast<int>(pp::renderer::gl::cube_face_texture_target(1U)),
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static_cast<int>(pp::renderer::gl::cube_face_texture_target(2U)),
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static_cast<int>(pp::renderer::gl::cube_face_texture_target(3U)),
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static_cast<int>(pp::renderer::gl::cube_face_texture_target(4U)),
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static_cast<int>(pp::renderer::gl::cube_face_texture_target(5U)),
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};
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TextureCube::TextureCube(TextureCube&& other) noexcept
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{
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other.m_faces = std::move(other.m_faces);
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m_cubetex_id = other.m_cubetex_id; other.m_cubetex_id = 0;
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m_resolution = other.m_resolution; other.m_resolution = 0;
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}
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TextureCube::~TextureCube()
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{
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destroy();
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}
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void TextureCube::operator=(TextureCube&& other) noexcept
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{
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other.m_faces = std::move(other.m_faces);
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m_cubetex_id = other.m_cubetex_id; other.m_cubetex_id = 0;
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m_resolution = other.m_resolution; other.m_resolution = 0;
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}
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bool TextureCube::create(int resolution) noexcept
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{
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App::I->render_task([this, resolution]
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{
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destroy();
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m_resolution = resolution;
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glGenTextures(1, &m_cubetex_id);
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if (!m_cubetex_id)
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return;
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glBindTexture(texture_cube_map_target(), m_cubetex_id);
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const auto format = pp::renderer::gl::texture_format_for_channel_count(4U);
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const auto component_type = static_cast<GLenum>(pp::renderer::gl::unsigned_byte_component_type());
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for (GLuint i = 0; i < 6; i++)
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{
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glTexImage2D(
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static_cast<GLenum>(pp::renderer::gl::cube_map_allocation_face_texture_target(i)),
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0,
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static_cast<GLint>(format.internal_format),
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m_resolution,
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m_resolution,
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0,
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static_cast<GLenum>(format.pixel_format),
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component_type,
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nullptr);
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}
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});
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return m_cubetex_id != 0;
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}
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void TextureCube::destroy() noexcept
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{
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if (m_cubetex_id)
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{
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App::I->render_task([f=m_faces, id=m_cubetex_id]
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{
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glDeleteTextures(static_cast<GLsizei>(f.size()), f.data());
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glDeleteTextures(1, &id);
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});
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m_cubetex_id = 0;
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m_faces.fill(0);
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m_resolution = 0;
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}
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}
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void TextureCube::bind() const noexcept
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{
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assert(App::I->is_render_thread());
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glBindTexture(texture_cube_map_target(), m_cubetex_id);
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}
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bool TextureManager::load(const char* path, bool generate_mipmaps)
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{
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uint16_t id = const_hash(path);
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auto t = m_textures.find(id);
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if (t == m_textures.end() || !m_textures[id].ready())
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{
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if (!m_textures[id].load(path))
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return false;
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}
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if (generate_mipmaps && !m_textures[id].has_mips)
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m_textures[id].create_mipmaps();
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return true;
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}
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void TextureManager::assign(uint16_t id, GLuint tex, int w, int h, GLuint internal_format, GLuint format)
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{
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m_textures[id].assign(tex, w, h, internal_format, format);
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}
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void TextureManager::assign(uint16_t id, GLuint tex, int w, int h)
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{
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assign(
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id,
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tex,
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w,
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h,
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pp::renderer::gl::rgba8_internal_format(),
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pp::renderer::gl::rgba_pixel_format());
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}
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Texture2D& TextureManager::get(uint16_t id)
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{
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return m_textures[id];
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}
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void TextureManager::invalidate()
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{
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for (auto& t : m_textures)
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{
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t.second.destroy();
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}
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m_textures.clear();
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}
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Image Texture2D::get_image() const noexcept
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{
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Image ret;
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ret.create(m_width, m_height);
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App::I->render_task([&]
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{
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bind();
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GLuint fboID;
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glGenFramebuffers(1, &fboID);
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if (fboID == 0)
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return;
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GLint oldFboID;
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glGetIntegerv(draw_framebuffer_binding_query(), &oldFboID);
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glBindFramebuffer(framebuffer_target(), fboID);
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glFramebufferTexture2D(
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framebuffer_target(),
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static_cast<GLenum>(pp::renderer::gl::framebuffer_color_attachment()),
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texture_2d_target(),
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m_tex,
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0);
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GLenum status = glCheckFramebufferStatus(framebuffer_target());
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if (status == static_cast<GLenum>(pp::renderer::gl::framebuffer_complete_status()))
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{
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const auto readback = pp::renderer::gl::rgba8_readback_format();
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glReadPixels(
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0,
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0,
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m_width,
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m_height,
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static_cast<GLenum>(readback.pixel_format),
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static_cast<GLenum>(readback.component_type),
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ret.m_data.get());
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}
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else
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{
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LOG("Texture2D::get_image() failed because: %s",
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pp::renderer::gl::framebuffer_status_name(static_cast<std::uint32_t>(status)));
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}
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glBindFramebuffer(framebuffer_target(), oldFboID);
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glDeleteFramebuffers(1, &fboID);
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});
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return ret;
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}
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Texture2D::Texture2D(Texture2D&& other) noexcept
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{
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m_tex = other.m_tex;
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m_width = other.m_width;
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m_height = other.m_height;
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m_format = other.m_format;
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m_iformat = other.m_iformat;
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has_mips = other.has_mips;
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other.m_tex = false;
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}
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void Texture2D::operator=(Texture2D&& other) noexcept
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{
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m_tex = other.m_tex;
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m_width = other.m_width;
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m_height = other.m_height;
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m_format = other.m_format;
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m_iformat = other.m_iformat;
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has_mips = other.has_mips;
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other.m_tex = false;
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}
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bool Texture2D::create(int width, int height)
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{
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return create(
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width,
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height,
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static_cast<GLint>(pp::renderer::gl::rgba8_internal_format()),
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static_cast<GLint>(pp::renderer::gl::rgba_pixel_format()));
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}
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bool Texture2D::create(int width, int height, GLint internal_format)
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{
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return create(
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width,
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height,
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internal_format,
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static_cast<GLint>(pp::renderer::gl::rgba_pixel_format()));
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}
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bool Texture2D::create(int width, int height, GLint internal_format, GLint format, const uint8_t* data)
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{
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App::I->render_task([=]
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{
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destroy();
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m_width = width;
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m_height = height;
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m_format = format;
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m_iformat = internal_format;
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glGenTextures(1, &m_tex);
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//LOG("TEX create %d", m_tex);
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bind();
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const auto ifmt = static_cast<GLenum>(
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pp::renderer::gl::texture_upload_type_for_internal_format(static_cast<std::uint32_t>(internal_format)));
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glTexImage2D(texture_2d_target(), 0, internal_format, width, height, 0, format, ifmt, data);
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unbind();
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});
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return true;
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}
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bool Texture2D::create(const Image& img)
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{
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const auto format = pp::renderer::gl::texture_format_for_channel_count(static_cast<std::uint32_t>(img.comp));
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if (format.channel_count == 0U)
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return false;
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return create(
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img.width,
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img.height,
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static_cast<GLint>(format.internal_format),
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static_cast<GLint>(format.pixel_format),
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img.data());
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}
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void Texture2D::create_mipmaps()
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{
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App::I->render_task([this]
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{
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bind();
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glGenerateMipmap(texture_2d_target());
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unbind();
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has_mips = true;
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});
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}
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void Texture2D::assign(GLuint tex, int w, int h, GLuint internal_format, GLuint format)
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{
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m_tex = tex;
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m_width = w;
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m_height = h;
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m_format = format;
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m_iformat = internal_format;
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}
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void Texture2D::assign(GLuint tex, int w, int h)
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{
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assign(
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tex,
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w,
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h,
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pp::renderer::gl::rgba8_internal_format(),
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pp::renderer::gl::rgba_pixel_format());
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}
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bool Texture2D::load(std::string filename)
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{
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LOG("load texture %s", filename.c_str());
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Image img;
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if (!img.load(filename))
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return false;
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return create(img);
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}
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bool Texture2D::load_file(std::string filename)
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{
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LOG("load texture %s", filename.c_str());
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Image img;
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if (!img.load_file(filename))
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return false;
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return create(img);
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}
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void Texture2D::destroy()
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{
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if (m_tex)
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{
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App::I->render_task_async([id = m_tex]
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{
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glDeleteTextures(1, &id);
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});
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m_tex = 0;
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}
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}
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void Texture2D::bind() const
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{
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assert(App::I->is_render_thread());
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glBindTexture(texture_2d_target(), m_tex);
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}
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void Texture2D::unbind() const
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{
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assert(App::I->is_render_thread());
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glBindTexture(texture_2d_target(), 0);
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}
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void Texture2D::update(const uint8_t* data)
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{
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App::I->render_task([this, data]
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{
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bind();
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glTexSubImage2D(
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texture_2d_target(),
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0,
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0,
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0,
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m_width,
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m_height,
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m_format,
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static_cast<GLenum>(pp::renderer::gl::unsigned_byte_component_type()),
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data);
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});
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}
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glm::vec2 Texture2D::size() const
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{
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return { m_width, m_height };
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}
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Texture2D::~Texture2D()
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{
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destroy();
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}
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bool Sampler::create(GLint filter, GLint wrap)
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{
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bool ret = false;
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App::I->render_task([this, &ret, filter, wrap]
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{
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#if USE_SAMPLER
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glGenSamplers(1, &id);
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#endif // USE_SAMPLER
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if (id == 0)
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{
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ret = false;
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return;
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}
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set(filter, wrap);
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ret = true;
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});
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return ret;
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}
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bool Sampler::create()
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{
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return create(
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static_cast<GLint>(pp::renderer::gl::linear_texture_filter()),
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static_cast<GLint>(pp::renderer::gl::clamp_to_edge_texture_wrap()));
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}
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bool Sampler::create(GLint filter)
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{
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return create(filter, static_cast<GLint>(pp::renderer::gl::clamp_to_edge_texture_wrap()));
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}
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void Sampler::set(GLint filter, GLint wrap)
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{
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App::I->render_task([=]
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{
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#if USE_SAMPLER
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for (const auto parameter : pp::renderer::gl::sampler_parameters_for_filter_wrap(
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static_cast<std::uint32_t>(filter),
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static_cast<std::uint32_t>(wrap)))
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{
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glSamplerParameteri(id, static_cast<GLenum>(parameter.name), static_cast<GLint>(parameter.value));
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}
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#endif // USE_SAMPLER
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});
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}
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void Sampler::set()
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{
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set(
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static_cast<GLint>(pp::renderer::gl::linear_texture_filter()),
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static_cast<GLint>(pp::renderer::gl::clamp_to_edge_texture_wrap()));
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}
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void Sampler::set(GLint filter)
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{
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set(filter, static_cast<GLint>(pp::renderer::gl::clamp_to_edge_texture_wrap()));
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}
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void Sampler::set_filter(GLint filter_min, GLint filter_mag)
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{
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App::I->render_task([=]
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{
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#if USE_SAMPLER
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for (const auto parameter : pp::renderer::gl::sampler_filter_parameters(
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static_cast<std::uint32_t>(filter_min),
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static_cast<std::uint32_t>(filter_mag)))
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{
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glSamplerParameteri(id, static_cast<GLenum>(parameter.name), static_cast<GLint>(parameter.value));
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}
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#endif // USE_SAMPLER
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});
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}
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void Sampler::set_border(glm::vec4 rgba)
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{
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App::I->render_task([this, rgba]
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{
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#if USE_SAMPLER && !defined(__GLES__)
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glSamplerParameterfv(
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id,
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static_cast<GLenum>(pp::renderer::gl::sampler_border_color_parameter_name()),
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glm::value_ptr(rgba));
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#endif // USE_SAMPLER
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});
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}
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void Sampler::bind(int unit) const
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{
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assert(App::I->is_render_thread());
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current_unit = unit;
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#if USE_SAMPLER
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glBindSampler(unit, id);
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#endif // USE_SAMPLER
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}
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void Sampler::unbind()
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{
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assert(App::I->is_render_thread());
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#if USE_SAMPLER
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glBindSampler(current_unit, 0);
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#endif // USE_SAMPLER
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}
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