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Use texture compression on GPU
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parent
5afd0b4ee2
commit
efd247fc58
6 changed files with 102 additions and 21 deletions
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@ -178,7 +178,14 @@ bool GLTexture::load_from_svg_files_as_sprites_array(const std::vector<std::stri
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glsafe(::glPixelStorei(GL_UNPACK_ALIGNMENT, 1));
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glsafe(::glGenTextures(1, &m_id));
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glsafe(::glBindTexture(GL_TEXTURE_2D, m_id));
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#if ENABLE_COMPRESSED_TEXTURES
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if (GLEW_EXT_texture_compression_s3tc)
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glsafe(::glTexImage2D(GL_TEXTURE_2D, 0, GL_COMPRESSED_RGBA_S3TC_DXT5_EXT, (GLsizei)m_width, (GLsizei)m_height, 0, GL_RGBA, GL_UNSIGNED_BYTE, (const void*)data.data()));
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else
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glsafe(::glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, (GLsizei)m_width, (GLsizei)m_height, 0, GL_RGBA, GL_UNSIGNED_BYTE, (const void*)data.data()));
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#else
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glsafe(::glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, (GLsizei)m_width, (GLsizei)m_height, 0, GL_RGBA, GL_UNSIGNED_BYTE, (const void*)data.data()));
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#endif // ENABLE_COMPRESSED_TEXTURES
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glsafe(::glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR));
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glsafe(::glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAX_LEVEL, 0));
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glsafe(::glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR));
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@ -284,7 +291,14 @@ unsigned int GLTexture::generate_mipmaps(wxImage& image)
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data[data_id + 3] = (img_alpha != nullptr) ? img_alpha[i] : 255;
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}
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#if ENABLE_COMPRESSED_TEXTURES
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if (GLEW_EXT_texture_compression_s3tc)
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glsafe(::glTexImage2D(GL_TEXTURE_2D, level, GL_COMPRESSED_RGBA_S3TC_DXT5_EXT, (GLsizei)w, (GLsizei)h, 0, GL_RGBA, GL_UNSIGNED_BYTE, (const void*)data.data()));
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else
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glsafe(::glTexImage2D(GL_TEXTURE_2D, level, GL_RGBA, (GLsizei)w, (GLsizei)h, 0, GL_RGBA, GL_UNSIGNED_BYTE, (const void*)data.data()));
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#else
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glsafe(::glTexImage2D(GL_TEXTURE_2D, level, GL_RGBA, (GLsizei)w, (GLsizei)h, 0, GL_RGBA, GL_UNSIGNED_BYTE, (const void*)data.data()));
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#endif // ENABLE_COMPRESSED_TEXTURES
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}
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return (unsigned int)level;
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@ -335,7 +349,14 @@ bool GLTexture::load_from_png(const std::string& filename, bool use_mipmaps)
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glsafe(::glPixelStorei(GL_UNPACK_ALIGNMENT, 1));
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glsafe(::glGenTextures(1, &m_id));
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glsafe(::glBindTexture(GL_TEXTURE_2D, m_id));
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#if ENABLE_COMPRESSED_TEXTURES
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if (GLEW_EXT_texture_compression_s3tc)
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glsafe(::glTexImage2D(GL_TEXTURE_2D, 0, GL_COMPRESSED_RGBA_S3TC_DXT5_EXT, (GLsizei)m_width, (GLsizei)m_height, 0, GL_RGBA, GL_UNSIGNED_BYTE, (const void*)data.data()));
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else
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glsafe(::glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, (GLsizei)m_width, (GLsizei)m_height, 0, GL_RGBA, GL_UNSIGNED_BYTE, (const void*)data.data()));
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#else
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glsafe(::glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, (GLsizei)m_width, (GLsizei)m_height, 0, GL_RGBA, GL_UNSIGNED_BYTE, (const void*)data.data()));
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#endif // ENABLE_COMPRESSED_TEXTURES
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if (use_mipmaps)
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{
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// we manually generate mipmaps because glGenerateMipmap() function is not reliable on all graphics cards
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@ -397,7 +418,14 @@ bool GLTexture::load_from_svg(const std::string& filename, bool use_mipmaps, uns
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glsafe(::glPixelStorei(GL_UNPACK_ALIGNMENT, 1));
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glsafe(::glGenTextures(1, &m_id));
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glsafe(::glBindTexture(GL_TEXTURE_2D, m_id));
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#if ENABLE_COMPRESSED_TEXTURES
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if (GLEW_EXT_texture_compression_s3tc)
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glsafe(::glTexImage2D(GL_TEXTURE_2D, 0, GL_COMPRESSED_RGBA_S3TC_DXT5_EXT, (GLsizei)m_width, (GLsizei)m_height, 0, GL_RGBA, GL_UNSIGNED_BYTE, (const void*)data.data()));
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else
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glsafe(::glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, (GLsizei)m_width, (GLsizei)m_height, 0, GL_RGBA, GL_UNSIGNED_BYTE, (const void*)data.data()));
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#else
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glsafe(::glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, (GLsizei)m_width, (GLsizei)m_height, 0, GL_RGBA, GL_UNSIGNED_BYTE, (const void*)data.data()));
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#endif // ENABLE_COMPRESSED_TEXTURES
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if (use_mipmaps)
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{
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// we manually generate mipmaps because glGenerateMipmap() function is not reliable on all graphics cards
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@ -413,7 +441,14 @@ bool GLTexture::load_from_svg(const std::string& filename, bool use_mipmaps, uns
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scale /= 2.0f;
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nsvgRasterize(rast, image, 0, 0, scale, data.data(), lod_w, lod_h, lod_w * 4);
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#if ENABLE_COMPRESSED_TEXTURES
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if (GLEW_EXT_texture_compression_s3tc)
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glsafe(::glTexImage2D(GL_TEXTURE_2D, level, GL_COMPRESSED_RGBA_S3TC_DXT5_EXT, (GLsizei)lod_w, (GLsizei)lod_h, 0, GL_RGBA, GL_UNSIGNED_BYTE, (const void*)data.data()));
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else
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glsafe(::glTexImage2D(GL_TEXTURE_2D, level, GL_RGBA, (GLsizei)lod_w, (GLsizei)lod_h, 0, GL_RGBA, GL_UNSIGNED_BYTE, (const void*)data.data()));
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#else
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glsafe(::glTexImage2D(GL_TEXTURE_2D, level, GL_RGBA, (GLsizei)lod_w, (GLsizei)lod_h, 0, GL_RGBA, GL_UNSIGNED_BYTE, (const void*)data.data()));
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#endif // ENABLE_COMPRESSED_TEXTURES
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}
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glsafe(::glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAX_LEVEL, level));
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