forked from bartvdbraak/blender
2dff7c01ad
Implemented using GLSL API from OpenColorIO library and some general functions were added to it's c-api: - OCIO_setupGLSLDraw prepares OpenGL context for GPU-based transformation for a giver processor. This function compiles and links shader, sets up it's argument. After this transformation would be applied on an image displaying as a 2D texture. So, glaDrawPixelsTex called after OCIO_setupGLSLDraw will do a proper color space transform. - OCIO_finishGLSLDraw restores OpenGL context after all color-managed display is over. - OCIO_freeOGLState frees allocated state structure used for cacheing some GLSL-related stuff. There're some utility functions in IMB_colormanagent which are basically proxies to lower level OCIO functions but which could be used from any place in blender. Chacheing of movie clip frame on GPU is also removed now, and either glaDrawPixelsTex or glaDrawPixelsAuto are used for display now. This is so no code duplication happens now and no large textures are lurking around in GPU memory. Known issues: - Texture buffer and GLSL are no longer checking for video card capabilities, possibly could lead to some artifacts on crappy drivers/cards. - Only float buffers are displaying using GLSL, byte buffers will still use fallback display method. This is to be addressed later. - If RGB curves are used as a part of display transform, GLSL display will also be disabled. This is also thing to be solved later. Additional changes: - glaDrawPixelsTexScaled will now use RGBA16F as an internal format of storing textures when it's used to draw float buffer. This is needed so LUT are applied without precision loss.
395 lines
9.9 KiB
C++
395 lines
9.9 KiB
C++
/*
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* ***** BEGIN GPL LICENSE BLOCK *****
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*
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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) 2012 Blender Foundation.
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* All rights reserved.
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*
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* Contributor(s): Brecht van Lommel
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*
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* ***** END GPL LICENSE BLOCK *****
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*/
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#include <string.h>
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#include "MEM_guardedalloc.h"
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#include "BLI_math_color.h"
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#include "ocio_impl.h"
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#define CONFIG_DEFAULT ((OCIO_ConstConfigRcPtr*)1)
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#define PROCESSOR_LINEAR_TO_SRGB ((OCIO_ConstProcessorRcPtr*)1)
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#define PROCESSOR_SRGB_TO_LINEAR ((OCIO_ConstProcessorRcPtr*)2)
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#define PROCESSOR_UNKNOWN ((OCIO_ConstProcessorRcPtr*)3)
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#define COLORSPACE_LINEAR ((OCIO_ConstColorSpaceRcPtr*)1)
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#define COLORSPACE_SRGB ((OCIO_ConstColorSpaceRcPtr*)2)
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typedef struct OCIO_PackedImageDescription {
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float *data;
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long width;
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long height;
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long numChannels;
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long chanStrideBytes;
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long xStrideBytes;
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long yStrideBytes;
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} OCIO_PackedImageDescription;
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OCIO_ConstConfigRcPtr *FallbackImpl::getCurrentConfig(void)
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{
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return CONFIG_DEFAULT;
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}
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void FallbackImpl::setCurrentConfig(const OCIO_ConstConfigRcPtr *)
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{
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}
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OCIO_ConstConfigRcPtr *FallbackImpl::configCreateFromEnv(void)
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{
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return CONFIG_DEFAULT;
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}
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OCIO_ConstConfigRcPtr *FallbackImpl::configCreateFromFile(const char *)
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{
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return CONFIG_DEFAULT;
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}
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void FallbackImpl::configRelease(OCIO_ConstConfigRcPtr *)
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{
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}
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int FallbackImpl::configGetNumColorSpaces(OCIO_ConstConfigRcPtr *)
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{
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return 2;
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}
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const char *FallbackImpl::configGetColorSpaceNameByIndex(OCIO_ConstConfigRcPtr *, int index)
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{
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if (index == 0)
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return "Linear";
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else if (index == 1)
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return "sRGB";
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return NULL;
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}
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OCIO_ConstColorSpaceRcPtr *FallbackImpl::configGetColorSpace(OCIO_ConstConfigRcPtr *, const char *name)
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{
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if (strcmp(name, "scene_linear") == 0)
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return COLORSPACE_LINEAR;
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else if (strcmp(name, "color_picking") == 0)
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return COLORSPACE_SRGB;
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else if (strcmp(name, "texture_paint") == 0)
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return COLORSPACE_LINEAR;
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else if (strcmp(name, "default_byte") == 0)
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return COLORSPACE_SRGB;
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else if (strcmp(name, "default_float") == 0)
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return COLORSPACE_LINEAR;
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else if (strcmp(name, "default_sequencer") == 0)
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return COLORSPACE_SRGB;
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else if (strcmp(name, "Linear") == 0)
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return COLORSPACE_LINEAR;
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else if (strcmp(name, "sRGB") == 0)
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return COLORSPACE_SRGB;
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return NULL;
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}
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int FallbackImpl::configGetIndexForColorSpace(OCIO_ConstConfigRcPtr *config, const char *name)
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{
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OCIO_ConstColorSpaceRcPtr *cs = configGetColorSpace(config, name);
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if (cs == COLORSPACE_LINEAR)
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return 0;
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else if (cs == COLORSPACE_SRGB)
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return 1;
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return -1;
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}
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const char *FallbackImpl::configGetDefaultDisplay(OCIO_ConstConfigRcPtr *)
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{
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return "sRGB";
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}
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int FallbackImpl::configGetNumDisplays(OCIO_ConstConfigRcPtr* config)
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{
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return 1;
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}
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const char *FallbackImpl::configGetDisplay(OCIO_ConstConfigRcPtr *, int index)
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{
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if (index == 0)
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return "sRGB";
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return NULL;
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}
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const char *FallbackImpl::configGetDefaultView(OCIO_ConstConfigRcPtr *, const char *)
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{
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return "Default";
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}
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int FallbackImpl::configGetNumViews(OCIO_ConstConfigRcPtr *, const char *)
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{
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return 1;
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}
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const char *FallbackImpl::configGetView(OCIO_ConstConfigRcPtr *, const char *, int index)
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{
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if (index == 0)
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return "Default";
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return NULL;
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}
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const char *FallbackImpl::configGetDisplayColorSpaceName(OCIO_ConstConfigRcPtr *, const char *, const char *)
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{
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return "sRGB";
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}
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int FallbackImpl::colorSpaceIsInvertible(OCIO_ConstColorSpaceRcPtr *cs)
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{
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return 1;
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}
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int FallbackImpl::colorSpaceIsData(OCIO_ConstColorSpaceRcPtr *cs)
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{
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return 0;
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}
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void FallbackImpl::colorSpaceRelease(OCIO_ConstColorSpaceRcPtr *cs)
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{
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}
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OCIO_ConstProcessorRcPtr *FallbackImpl::configGetProcessorWithNames(OCIO_ConstConfigRcPtr *config, const char *srcName, const char *dstName)
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{
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OCIO_ConstColorSpaceRcPtr *cs_src = configGetColorSpace(config, srcName);
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OCIO_ConstColorSpaceRcPtr *cs_dst = configGetColorSpace(config, dstName);
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if (cs_src == COLORSPACE_LINEAR && cs_dst == COLORSPACE_SRGB)
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return PROCESSOR_LINEAR_TO_SRGB;
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else if (cs_src == COLORSPACE_SRGB && cs_dst == COLORSPACE_LINEAR)
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return PROCESSOR_SRGB_TO_LINEAR;
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return 0;
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}
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OCIO_ConstProcessorRcPtr *FallbackImpl::configGetProcessor(OCIO_ConstConfigRcPtr *, OCIO_ConstTransformRcPtr *tfm)
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{
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return (OCIO_ConstProcessorRcPtr*)tfm;
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}
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void FallbackImpl::processorApply(OCIO_ConstProcessorRcPtr *processor, OCIO_PackedImageDesc *img)
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{
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/* OCIO_TODO stride not respected, channels must be 3 or 4 */
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OCIO_PackedImageDescription *desc = (OCIO_PackedImageDescription*)img;
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int channels = desc->numChannels;
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float *pixels = desc->data;
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int width = desc->width;
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int height = desc->height;
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int x, y;
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for (y = 0; y < height; y++) {
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for (x = 0; x < width; x++) {
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float *pixel = pixels + channels * (y * width + x);
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if (channels == 4)
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processorApplyRGBA(processor, pixel);
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else if (channels == 3)
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processorApplyRGB(processor, pixel);
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}
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}
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}
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void FallbackImpl::processorApply_predivide(OCIO_ConstProcessorRcPtr *processor, OCIO_PackedImageDesc *img)
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{
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/* OCIO_TODO stride not respected, channels must be 3 or 4 */
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OCIO_PackedImageDescription *desc = (OCIO_PackedImageDescription*)img;
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int channels = desc->numChannels;
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float *pixels = desc->data;
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int width = desc->width;
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int height = desc->height;
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int x, y;
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for (y = 0; y < height; y++) {
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for (x = 0; x < width; x++) {
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float *pixel = pixels + channels * (y * width + x);
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if (channels == 4)
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processorApplyRGBA_predivide(processor, pixel);
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else if (channels == 3)
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processorApplyRGB(processor, pixel);
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}
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}
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}
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void FallbackImpl::processorApplyRGB(OCIO_ConstProcessorRcPtr *processor, float *pixel)
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{
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if (processor == PROCESSOR_LINEAR_TO_SRGB)
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linearrgb_to_srgb_v3_v3(pixel, pixel);
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else if (processor == PROCESSOR_SRGB_TO_LINEAR)
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srgb_to_linearrgb_v3_v3(pixel, pixel);
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}
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void FallbackImpl::processorApplyRGBA(OCIO_ConstProcessorRcPtr *processor, float *pixel)
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{
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if (processor == PROCESSOR_LINEAR_TO_SRGB)
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linearrgb_to_srgb_v4(pixel, pixel);
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else if (processor == PROCESSOR_SRGB_TO_LINEAR)
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srgb_to_linearrgb_v4(pixel, pixel);
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}
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void FallbackImpl::processorApplyRGBA_predivide(OCIO_ConstProcessorRcPtr *processor, float *pixel)
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{
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if (pixel[3] == 1.0f || pixel[3] == 0.0f) {
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processorApplyRGBA(processor, pixel);
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}
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else {
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float alpha, inv_alpha;
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alpha = pixel[3];
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inv_alpha = 1.0f / alpha;
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pixel[0] *= inv_alpha;
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pixel[1] *= inv_alpha;
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pixel[2] *= inv_alpha;
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processorApplyRGBA(processor, pixel);
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pixel[0] *= alpha;
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pixel[1] *= alpha;
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pixel[2] *= alpha;
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}
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}
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void FallbackImpl::processorRelease(OCIO_ConstProcessorRcPtr *)
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{
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}
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const char *FallbackImpl::colorSpaceGetName(OCIO_ConstColorSpaceRcPtr *cs)
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{
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if (cs == COLORSPACE_LINEAR)
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return "Linear";
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else if (cs == COLORSPACE_SRGB)
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return "sRGB";
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return NULL;
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}
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const char *FallbackImpl::colorSpaceGetDescription(OCIO_ConstColorSpaceRcPtr *)
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{
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return "";
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}
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const char *FallbackImpl::colorSpaceGetFamily(OCIO_ConstColorSpaceRcPtr *)
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{
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return "";
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}
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OCIO_DisplayTransformRcPtr *FallbackImpl::createDisplayTransform(void)
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{
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return (OCIO_DisplayTransformRcPtr*)PROCESSOR_LINEAR_TO_SRGB;
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}
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void FallbackImpl::displayTransformSetInputColorSpaceName(OCIO_DisplayTransformRcPtr *, const char *)
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{
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}
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void FallbackImpl::displayTransformSetDisplay(OCIO_DisplayTransformRcPtr *, const char *)
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{
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}
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void FallbackImpl::displayTransformSetView(OCIO_DisplayTransformRcPtr *, const char *)
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{
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}
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void FallbackImpl::displayTransformSetDisplayCC(OCIO_DisplayTransformRcPtr *, OCIO_ConstTransformRcPtr *)
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{
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}
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void FallbackImpl::displayTransformSetLinearCC(OCIO_DisplayTransformRcPtr *, OCIO_ConstTransformRcPtr *)
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{
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}
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void FallbackImpl::displayTransformRelease(OCIO_DisplayTransformRcPtr *)
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{
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}
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OCIO_PackedImageDesc *FallbackImpl::createOCIO_PackedImageDesc(float *data, long width, long height, long numChannels,
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long chanStrideBytes, long xStrideBytes, long yStrideBytes)
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{
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OCIO_PackedImageDescription *desc = (OCIO_PackedImageDescription*)MEM_callocN(sizeof(OCIO_PackedImageDescription), "OCIO_PackedImageDescription");
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desc->data = data;
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desc->width = width;
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desc->height = height;
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desc->numChannels = numChannels;
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desc->chanStrideBytes = chanStrideBytes;
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desc->xStrideBytes = xStrideBytes;
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desc->yStrideBytes = yStrideBytes;
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return (OCIO_PackedImageDesc*)desc;
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}
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void FallbackImpl::OCIO_PackedImageDescRelease(OCIO_PackedImageDesc* id)
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{
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MEM_freeN(id);
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}
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OCIO_ExponentTransformRcPtr *FallbackImpl::createExponentTransform(void)
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{
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return (OCIO_ExponentTransformRcPtr*)PROCESSOR_UNKNOWN;
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}
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void FallbackImpl::exponentTransformSetValue(OCIO_ExponentTransformRcPtr *, const float *)
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{
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}
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void FallbackImpl::exponentTransformRelease(OCIO_ExponentTransformRcPtr *)
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{
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}
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OCIO_MatrixTransformRcPtr *FallbackImpl::createMatrixTransform(void)
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{
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return (OCIO_MatrixTransformRcPtr*)PROCESSOR_UNKNOWN;
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}
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void FallbackImpl::matrixTransformSetValue(OCIO_MatrixTransformRcPtr *, const float *, const float *)
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{
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}
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void FallbackImpl::matrixTransformRelease(OCIO_MatrixTransformRcPtr *)
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{
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}
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void FallbackImpl::matrixTransformScale(float * , float * , const float *)
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{
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}
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void FallbackImpl::setupGLSLDraw(struct OCIO_GLSLDrawState **state_r, OCIO_ConstProcessorRcPtr *processor)
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{
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}
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void FallbackImpl::finishGLSLDraw(OCIO_GLSLDrawState *state)
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{
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}
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void FallbackImpl::freeGLState(struct OCIO_GLSLDrawState *state_r)
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{
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}
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