402 lines
10 KiB
C++
402 lines
10 KiB
C++
/*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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* The Original Code is Copyright (C) 2020 Blender Foundation.
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* All rights reserved.
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*/
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/** \file
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* \ingroup gpu
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*/
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#pragma once
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#include "MEM_guardedalloc.h"
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#include "BLI_assert.h"
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#include "gpu_texture_private.hh"
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#include "glew-mx.h"
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struct GPUFrameBuffer;
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namespace blender {
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namespace gpu {
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class GLTexture : public Texture {
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friend class GLStateManager;
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friend class GLFrameBuffer;
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private:
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/** All samplers states. */
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static GLuint samplers_[GPU_SAMPLER_MAX];
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/** Target to bind the texture to (#GL_TEXTURE_1D, #GL_TEXTURE_2D, etc...). */
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GLenum target_ = -1;
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/** opengl identifier for texture. */
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GLuint tex_id_ = 0;
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/** Legacy workaround for texture copy. Created when using framebuffer_get(). */
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struct GPUFrameBuffer *framebuffer_ = NULL;
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/** True if this texture is bound to at least one texture unit. */
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/* TODO(fclem): How do we ensure thread safety here? */
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bool is_bound_ = false;
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/** True if pixels in the texture have been initialized. */
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bool has_pixels_ = false;
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public:
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GLTexture(const char *name);
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~GLTexture();
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void update_sub(
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int mip, int offset[3], int extent[3], eGPUDataFormat type, const void *data) override;
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/**
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* This will create the mipmap images and populate them with filtered data from base level.
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*
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* \warning Depth textures are not populated but they have their mips correctly defined.
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* \warning This resets the mipmap range.
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*/
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void generate_mipmap() override;
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void copy_to(Texture *dst) override;
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void clear(eGPUDataFormat format, const void *data) override;
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void swizzle_set(const char swizzle_mask[4]) override;
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void mip_range_set(int min, int max) override;
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void *read(int mip, eGPUDataFormat type) override;
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void check_feedback_loop();
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/* TODO(fclem): Legacy. Should be removed at some point. */
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uint gl_bindcode_get() const override;
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static void samplers_init();
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static void samplers_free();
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static void samplers_update();
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protected:
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/** Return true on success. */
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bool init_internal() override;
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/** Return true on success. */
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bool init_internal(GPUVertBuf *vbo) override;
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private:
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bool proxy_check(int mip);
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/** Will create enough mipmaps up to get to the given level. */
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void ensure_mipmaps(int mip);
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void update_sub_direct_state_access(
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int mip, int offset[3], int extent[3], GLenum gl_format, GLenum gl_type, const void *data);
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GPUFrameBuffer *framebuffer_get();
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MEM_CXX_CLASS_ALLOC_FUNCS("GLTexture")
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};
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inline GLenum to_gl_internal_format(eGPUTextureFormat format)
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{
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/* You can add any of the available type to this list
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* For available types see GPU_texture.h */
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switch (format) {
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/* Formats texture & renderbuffer */
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case GPU_RGBA8UI:
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return GL_RGBA8UI;
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case GPU_RGBA8I:
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return GL_RGBA8I;
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case GPU_RGBA8:
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return GL_RGBA8;
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case GPU_RGBA32UI:
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return GL_RGBA32UI;
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case GPU_RGBA32I:
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return GL_RGBA32I;
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case GPU_RGBA32F:
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return GL_RGBA32F;
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case GPU_RGBA16UI:
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return GL_RGBA16UI;
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case GPU_RGBA16I:
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return GL_RGBA16I;
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case GPU_RGBA16F:
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return GL_RGBA16F;
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case GPU_RGBA16:
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return GL_RGBA16;
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case GPU_RG8UI:
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return GL_RG8UI;
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case GPU_RG8I:
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return GL_RG8I;
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case GPU_RG8:
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return GL_RG8;
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case GPU_RG32UI:
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return GL_RG32UI;
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case GPU_RG32I:
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return GL_RG32I;
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case GPU_RG32F:
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return GL_RG32F;
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case GPU_RG16UI:
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return GL_RG16UI;
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case GPU_RG16I:
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return GL_RG16I;
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case GPU_RG16F:
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return GL_RG16F;
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case GPU_RG16:
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return GL_RG16;
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case GPU_R8UI:
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return GL_R8UI;
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case GPU_R8I:
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return GL_R8I;
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case GPU_R8:
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return GL_R8;
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case GPU_R32UI:
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return GL_R32UI;
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case GPU_R32I:
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return GL_R32I;
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case GPU_R32F:
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return GL_R32F;
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case GPU_R16UI:
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return GL_R16UI;
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case GPU_R16I:
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return GL_R16I;
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case GPU_R16F:
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return GL_R16F;
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case GPU_R16:
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return GL_R16;
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/* Special formats texture & renderbuffer */
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case GPU_RGB10_A2:
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return GL_RGB10_A2;
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case GPU_R11F_G11F_B10F:
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return GL_R11F_G11F_B10F;
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case GPU_DEPTH32F_STENCIL8:
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return GL_DEPTH32F_STENCIL8;
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case GPU_DEPTH24_STENCIL8:
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return GL_DEPTH24_STENCIL8;
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case GPU_SRGB8_A8:
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return GL_SRGB8_ALPHA8;
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/* Texture only format */
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case GPU_RGB16F:
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return GL_RGB16F;
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/* Special formats texture only */
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case GPU_SRGB8_A8_DXT1:
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return GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT1_EXT;
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case GPU_SRGB8_A8_DXT3:
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return GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT3_EXT;
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case GPU_SRGB8_A8_DXT5:
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return GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT5_EXT;
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case GPU_RGBA8_DXT1:
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return GL_COMPRESSED_RGBA_S3TC_DXT1_EXT;
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case GPU_RGBA8_DXT3:
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return GL_COMPRESSED_RGBA_S3TC_DXT3_EXT;
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case GPU_RGBA8_DXT5:
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return GL_COMPRESSED_RGBA_S3TC_DXT5_EXT;
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/* Depth Formats */
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case GPU_DEPTH_COMPONENT32F:
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return GL_DEPTH_COMPONENT32F;
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case GPU_DEPTH_COMPONENT24:
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return GL_DEPTH_COMPONENT24;
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case GPU_DEPTH_COMPONENT16:
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return GL_DEPTH_COMPONENT16;
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default:
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BLI_assert_msg(0, "Texture format incorrect or unsupported");
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return 0;
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}
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}
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inline GLenum to_gl_target(eGPUTextureType type)
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{
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switch (type) {
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case GPU_TEXTURE_1D:
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return GL_TEXTURE_1D;
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case GPU_TEXTURE_1D_ARRAY:
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return GL_TEXTURE_1D_ARRAY;
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case GPU_TEXTURE_2D:
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return GL_TEXTURE_2D;
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case GPU_TEXTURE_2D_ARRAY:
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return GL_TEXTURE_2D_ARRAY;
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case GPU_TEXTURE_3D:
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return GL_TEXTURE_3D;
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case GPU_TEXTURE_CUBE:
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return GL_TEXTURE_CUBE_MAP;
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case GPU_TEXTURE_CUBE_ARRAY:
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return GL_TEXTURE_CUBE_MAP_ARRAY_ARB;
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case GPU_TEXTURE_BUFFER:
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return GL_TEXTURE_BUFFER;
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default:
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BLI_assert(0);
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return GL_TEXTURE_1D;
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}
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}
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inline GLenum to_gl_proxy(eGPUTextureType type)
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{
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switch (type) {
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case GPU_TEXTURE_1D:
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return GL_PROXY_TEXTURE_1D;
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case GPU_TEXTURE_1D_ARRAY:
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return GL_PROXY_TEXTURE_1D_ARRAY;
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case GPU_TEXTURE_2D:
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return GL_PROXY_TEXTURE_2D;
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case GPU_TEXTURE_2D_ARRAY:
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return GL_PROXY_TEXTURE_2D_ARRAY;
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case GPU_TEXTURE_3D:
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return GL_PROXY_TEXTURE_3D;
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case GPU_TEXTURE_CUBE:
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return GL_PROXY_TEXTURE_CUBE_MAP;
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case GPU_TEXTURE_CUBE_ARRAY:
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return GL_PROXY_TEXTURE_CUBE_MAP_ARRAY_ARB;
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case GPU_TEXTURE_BUFFER:
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default:
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BLI_assert(0);
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return GL_TEXTURE_1D;
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}
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}
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inline GLenum swizzle_to_gl(const char swizzle)
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{
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switch (swizzle) {
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default:
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case 'x':
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case 'r':
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return GL_RED;
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case 'y':
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case 'g':
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return GL_GREEN;
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case 'z':
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case 'b':
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return GL_BLUE;
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case 'w':
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case 'a':
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return GL_ALPHA;
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case '0':
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return GL_ZERO;
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case '1':
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return GL_ONE;
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}
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}
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inline GLenum to_gl(eGPUDataFormat format)
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{
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switch (format) {
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case GPU_DATA_FLOAT:
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return GL_FLOAT;
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case GPU_DATA_INT:
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return GL_INT;
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case GPU_DATA_UINT:
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return GL_UNSIGNED_INT;
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case GPU_DATA_UBYTE:
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return GL_UNSIGNED_BYTE;
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case GPU_DATA_UINT_24_8:
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return GL_UNSIGNED_INT_24_8;
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case GPU_DATA_2_10_10_10_REV:
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return GL_UNSIGNED_INT_2_10_10_10_REV;
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case GPU_DATA_10_11_11_REV:
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return GL_UNSIGNED_INT_10F_11F_11F_REV;
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default:
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BLI_assert_msg(0, "Unhandled data format");
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return GL_FLOAT;
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}
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}
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/**
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* Definitely not complete, edit according to the OpenGL specification.
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*/
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inline GLenum to_gl_data_format(eGPUTextureFormat format)
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{
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/* You can add any of the available type to this list
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* For available types see GPU_texture.h */
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switch (format) {
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case GPU_R8I:
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case GPU_R8UI:
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case GPU_R16I:
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case GPU_R16UI:
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case GPU_R32I:
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case GPU_R32UI:
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return GL_RED_INTEGER;
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case GPU_RG8I:
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case GPU_RG8UI:
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case GPU_RG16I:
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case GPU_RG16UI:
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case GPU_RG32I:
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case GPU_RG32UI:
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return GL_RG_INTEGER;
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case GPU_RGBA8I:
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case GPU_RGBA8UI:
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case GPU_RGBA16I:
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case GPU_RGBA16UI:
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case GPU_RGBA32I:
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case GPU_RGBA32UI:
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return GL_RGBA_INTEGER;
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case GPU_R8:
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case GPU_R16:
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case GPU_R16F:
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case GPU_R32F:
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return GL_RED;
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case GPU_RG8:
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case GPU_RG16:
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case GPU_RG16F:
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case GPU_RG32F:
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return GL_RG;
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case GPU_R11F_G11F_B10F:
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case GPU_RGB16F:
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return GL_RGB;
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case GPU_RGBA8:
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case GPU_SRGB8_A8:
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case GPU_RGBA16:
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case GPU_RGBA16F:
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case GPU_RGBA32F:
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case GPU_RGB10_A2:
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return GL_RGBA;
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case GPU_DEPTH24_STENCIL8:
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case GPU_DEPTH32F_STENCIL8:
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return GL_DEPTH_STENCIL;
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case GPU_DEPTH_COMPONENT16:
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case GPU_DEPTH_COMPONENT24:
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case GPU_DEPTH_COMPONENT32F:
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return GL_DEPTH_COMPONENT;
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case GPU_SRGB8_A8_DXT1:
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return GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT1_EXT;
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case GPU_SRGB8_A8_DXT3:
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return GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT3_EXT;
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case GPU_SRGB8_A8_DXT5:
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return GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT5_EXT;
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case GPU_RGBA8_DXT1:
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return GL_COMPRESSED_RGBA_S3TC_DXT1_EXT;
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case GPU_RGBA8_DXT3:
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return GL_COMPRESSED_RGBA_S3TC_DXT3_EXT;
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case GPU_RGBA8_DXT5:
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return GL_COMPRESSED_RGBA_S3TC_DXT5_EXT;
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default:
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BLI_assert_msg(0, "Texture format incorrect or unsupported\n");
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return 0;
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}
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}
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/**
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* Assume Unorm / Float target. Used with #glReadPixels.
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*/
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inline GLenum channel_len_to_gl(int channel_len)
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{
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switch (channel_len) {
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case 1:
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return GL_RED;
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case 2:
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return GL_RG;
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case 3:
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return GL_RGB;
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case 4:
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return GL_RGBA;
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default:
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BLI_assert_msg(0, "Wrong number of texture channels");
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return GL_RED;
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}
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}
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} // namespace gpu
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} // namespace blender
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