mirror of
https://github.com/baldurk/renderdoc.git
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129 lines
3.6 KiB
C++
129 lines
3.6 KiB
C++
/******************************************************************************
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* The MIT License (MIT)
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*
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* Copyright (c) 2014 Crytek
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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******************************************************************************/
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#include "gl_resources.h"
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size_t GetByteSize(GLsizei w, GLsizei h, GLsizei d, GLenum format, GLenum type, int align)
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{
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size_t elemSize = 0;
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GLsizei alignMask = ~0x0;
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GLsizei alignAdd = 0;
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switch(align)
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{
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default:
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case 1:
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break;
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case 2:
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alignMask = ~0x1;
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alignAdd = 1;
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break;
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case 4:
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alignMask = ~0x3;
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alignAdd = 3;
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break;
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case 8:
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alignMask = ~0x7;
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alignAdd = 7;
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break;
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}
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switch(type)
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{
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case eGL_UNSIGNED_BYTE:
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case eGL_BYTE:
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elemSize = 1;
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break;
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case eGL_UNSIGNED_SHORT:
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case eGL_SHORT:
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case eGL_HALF_FLOAT:
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elemSize = 2;
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break;
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case eGL_UNSIGNED_INT:
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case eGL_INT:
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case eGL_FLOAT:
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elemSize = 4;
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break;
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case eGL_UNSIGNED_BYTE_3_3_2:
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case eGL_UNSIGNED_BYTE_2_3_3_REV:
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return ((w + alignAdd) & alignMask)*h*d;
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case eGL_UNSIGNED_SHORT_5_6_5:
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case eGL_UNSIGNED_SHORT_5_6_5_REV:
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case eGL_UNSIGNED_SHORT_4_4_4_4:
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case eGL_UNSIGNED_SHORT_4_4_4_4_REV:
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case eGL_UNSIGNED_SHORT_5_5_5_1:
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case eGL_UNSIGNED_SHORT_1_5_5_5_REV:
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return ((w*2 + alignAdd) & alignMask)*h*d;
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case eGL_UNSIGNED_INT_8_8_8_8:
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case eGL_UNSIGNED_INT_8_8_8_8_REV:
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case eGL_UNSIGNED_INT_10_10_10_2:
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case eGL_UNSIGNED_INT_2_10_10_10_REV:
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return ((w*4 + alignAdd) & alignMask)*h*d;
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case eGL_DEPTH_COMPONENT16:
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return ((w*2 + alignAdd) & alignMask)*h*d;
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case eGL_DEPTH_COMPONENT24:
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case eGL_DEPTH24_STENCIL8:
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case eGL_DEPTH_COMPONENT32:
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case eGL_DEPTH_COMPONENT32F:
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return ((w*4 + alignAdd) & alignMask)*h*d;
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case eGL_DEPTH32F_STENCIL8:
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return ((w*5 + alignAdd) & alignMask)*h*d;
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default:
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RDCERR("Unhandled Byte Size type %d!", type);
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break;
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}
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switch(format)
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{
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case eGL_RED:
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case eGL_RED_INTEGER:
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case eGL_GREEN:
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case eGL_GREEN_INTEGER:
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case eGL_BLUE:
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case eGL_BLUE_INTEGER:
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return ((w*elemSize + alignAdd) & alignMask)*h*d;
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case eGL_RG:
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case eGL_RG_INTEGER:
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return ((w*elemSize*2 + alignAdd) & alignMask)*h*d;
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case eGL_RGB:
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case eGL_RGB_INTEGER:
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case eGL_BGR:
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case eGL_BGR_INTEGER:
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return ((w*elemSize*3 + alignAdd) & alignMask)*h*d;
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case eGL_RGBA:
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case eGL_RGBA_INTEGER:
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case eGL_BGRA:
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case eGL_BGRA_INTEGER:
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return ((w*elemSize*4 + alignAdd) & alignMask)*h*d;
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default:
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RDCERR("Unhandled Byte Size format %d!", format);
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break;
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}
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RDCERR("Unhandled Byte Size case!");
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return 0;
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}
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