Brecht Van Lommel
7ad802cf3a
Cycles now uses the color space on the image datablock, and uses OpenColorIO to convert to scene linear as needed. Byte images do not take extra memory, they are compressed in scene linear + sRGB transfer function which in common cases is a no-op. Eevee and workbench were changed to work similar. Float images are stored as scene linear. Byte images are compressed as scene linear + sRGB and stored in a GL_SRGB8_ALPHA8 texture. From the GLSL shader side this means they are read as scene linear, simplifying the code and taking advantage of hardware support. Further, OpenGL image textures are now all stored with premultiplied alpha. Eevee texture sampling looks a little different now because interpolation happens premultiplied and in scene linear space. Overlays and grease pencil work in sRGB space so those now have an extra conversion to sRGB after reading from image textures. This is not particularly elegant but as long as engines use different conventions, one or the other needs to do conversion. This change breaks compatibility for cases where multiple image texture nodes were using the same image with different color space node settings. However it gives more predictable behavior for baking and texture painting if save, load and image editing operations have a single color space to handle. Differential Revision: https://developer.blender.org/D4807
98 lines
2.8 KiB
C++
98 lines
2.8 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) 2005 Blender Foundation.
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* All rights reserved.
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*/
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/** \file
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* \ingroup nodes
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*/
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#ifndef __NODE_SHADER_UTIL_H__
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#define __NODE_SHADER_UTIL_H__
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#include <math.h>
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#include <float.h>
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#include <string.h>
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#include "MEM_guardedalloc.h"
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#include "DNA_color_types.h"
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#include "DNA_customdata_types.h"
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#include "DNA_ID.h"
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#include "DNA_image_types.h"
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#include "DNA_material_types.h"
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#include "DNA_node_types.h"
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#include "DNA_object_types.h"
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#include "DNA_scene_types.h"
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#include "DNA_texture_types.h"
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#include "BLI_math.h"
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#include "BLI_blenlib.h"
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#include "BLI_rand.h"
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#include "BLI_threads.h"
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#include "BLI_utildefines.h"
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#include "BKE_colorband.h"
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#include "BKE_colortools.h"
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#include "BKE_global.h"
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#include "BKE_image.h"
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#include "BKE_main.h"
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#include "BKE_material.h"
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#include "BKE_node.h"
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#include "BKE_texture.h"
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#include "NOD_shader.h"
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#include "node_util.h"
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#include "BLT_translation.h"
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#include "IMB_imbuf_types.h"
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#include "IMB_imbuf.h"
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#include "RE_pipeline.h"
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#include "RE_shader_ext.h"
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#include "GPU_material.h"
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#include "GPU_texture.h"
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#include "GPU_uniformbuffer.h"
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bool sh_node_poll_default(struct bNodeType *ntype, struct bNodeTree *ntree);
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void sh_node_type_base(
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struct bNodeType *ntype, int type, const char *name, short nclass, short flag);
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/* ********* exec data struct, remains internal *********** */
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typedef struct ShaderCallData {
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/* Empty for now, may be reused if we convert shader to texture nodes. */
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int dummy;
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} ShaderCallData;
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void nodestack_get_vec(float *in, short type_in, bNodeStack *ns);
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void node_gpu_stack_from_data(struct GPUNodeStack *gs, int type, struct bNodeStack *ns);
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void node_data_from_gpu_stack(struct bNodeStack *ns, struct GPUNodeStack *gs);
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void node_shader_gpu_tex_mapping(struct GPUMaterial *mat,
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struct bNode *node,
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struct GPUNodeStack *in,
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struct GPUNodeStack *out);
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void ntreeExecGPUNodes(struct bNodeTreeExec *exec,
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struct GPUMaterial *mat,
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struct bNode *output_node);
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#endif
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