2019-11-23 20:27:39 +08:00
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/****************************************************************************
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Copyright (c) 2018-2019 Xiamen Yaji Software Co., Ltd.
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2020-09-01 13:24:45 +08:00
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Copyright (c) 2020 c4games.com
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2019-11-23 20:27:39 +08:00
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http://www.cocos2d-x.org
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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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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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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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2021-12-25 10:04:45 +08:00
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2019-11-23 20:27:39 +08:00
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#include "UtilsGL.h"
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#include "ProgramGL.h"
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2020-09-11 01:19:10 +08:00
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#include "TextureGL.h"
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2019-11-23 20:27:39 +08:00
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#include "renderer/backend/Types.h"
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2020-09-25 11:07:56 +08:00
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#include "renderer/backend/TextureUtils.h"
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#include "platform/CCGL.h"
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2019-11-23 20:27:39 +08:00
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2021-12-25 10:04:45 +08:00
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// In desktop OpenGL 4+ and OpenGL ES 3.0+, specific GL formats GL_x_INTEGER are used for integer textures.
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// For older desktop OpenGL contexts, GL names without _INTEGER suffix were used.
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// See http://docs.gl/gl4/glTexImage2D, http://docs.gl/gl3/glTexImage2D, http://docs.gl/es3/glTexImage2D
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2020-09-25 11:07:56 +08:00
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#if defined(GL_VERSION_4_0) || defined(CC_USE_GLES)
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# define RED_INTEGER GL_RED_INTEGER
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# define RG_INTEGER GL_RG_INTEGER
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# define RGB_INTEGER GL_RGB_INTEGER
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# define RGBA_INTEGER GL_RGBA_INTEGER
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#else
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# define RED_INTEGER GL_RED
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# define RG_INTEGER GL_RG
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# define RGB_INTEGER GL_RGB
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# define RGBA_INTEGER GL_RGBA
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2020-08-31 21:04:47 +08:00
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#endif
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2019-11-23 20:27:39 +08:00
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CC_BACKEND_BEGIN
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2020-09-25 11:07:56 +08:00
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struct GPUTextureFormatInfo
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{
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GLenum internalFmt;
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GLenum internalFmtSrgb;
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GLenum fmt;
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GLenum fmtSrgb;
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GLenum type;
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};
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2021-12-25 10:04:45 +08:00
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static GPUTextureFormatInfo s_textureFormats[] = {
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/* pvrtc v1 */
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{
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GL_COMPRESSED_RGB_PVRTC_4BPPV1_IMG,
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GL_COMPRESSED_SRGB_PVRTC_4BPPV1_EXT,
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GL_COMPRESSED_RGB_PVRTC_4BPPV1_IMG,
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GL_COMPRESSED_RGB_PVRTC_4BPPV1_IMG,
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GL_ZERO,
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}, // PVRTC4
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{
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GL_COMPRESSED_RGBA_PVRTC_4BPPV1_IMG,
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GL_COMPRESSED_SRGB_ALPHA_PVRTC_4BPPV1_EXT,
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GL_COMPRESSED_RGBA_PVRTC_4BPPV1_IMG,
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GL_COMPRESSED_RGBA_PVRTC_4BPPV1_IMG,
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GL_ZERO,
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}, // PVRTC4A
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{
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GL_COMPRESSED_RGB_PVRTC_2BPPV1_IMG,
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GL_COMPRESSED_SRGB_PVRTC_2BPPV1_EXT,
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GL_COMPRESSED_RGB_PVRTC_2BPPV1_IMG,
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GL_COMPRESSED_RGB_PVRTC_2BPPV1_IMG,
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GL_ZERO,
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}, // PVRTC2
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{
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GL_COMPRESSED_RGBA_PVRTC_2BPPV1_IMG,
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GL_COMPRESSED_SRGB_ALPHA_PVRTC_2BPPV1_EXT,
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GL_COMPRESSED_RGBA_PVRTC_2BPPV1_IMG,
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GL_COMPRESSED_RGBA_PVRTC_2BPPV1_IMG,
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GL_ZERO,
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}, // PVRTC2A
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2020-09-25 11:07:56 +08:00
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2021-12-25 10:04:45 +08:00
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// { GL_COMPRESSED_RGBA_PVRTC_4BPPV2_IMG, GL_ZERO, GL_COMPRESSED_RGBA_PVRTC_4BPPV2_IMG,
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// GL_COMPRESSED_RGBA_PVRTC_4BPPV2_IMG, GL_ZERO, }, // PVRTC4A v2 {
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// GL_COMPRESSED_RGBA_PVRTC_2BPPV2_IMG, GL_ZERO, GL_COMPRESSED_RGBA_PVRTC_2BPPV2_IMG,
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// GL_COMPRESSED_RGBA_PVRTC_2BPPV2_IMG, GL_ZERO, }, // PVRTC2A v2
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/* etc */
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{
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GL_ETC1_RGB8_OES,
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GL_ZERO,
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GL_ETC1_RGB8_OES,
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GL_ETC1_RGB8_OES,
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GL_ZERO,
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}, // ETC1
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{
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GL_COMPRESSED_RGB8_ETC2,
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GL_COMPRESSED_SRGB8_ETC2,
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GL_COMPRESSED_RGB8_ETC2,
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GL_COMPRESSED_RGB8_ETC2,
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GL_ZERO,
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}, // ETC2
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{
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GL_COMPRESSED_RGBA8_ETC2_EAC,
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GL_COMPRESSED_SRGB8_ALPHA8_ETC2_EAC,
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GL_COMPRESSED_RGBA8_ETC2_EAC,
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GL_COMPRESSED_RGBA8_ETC2_EAC,
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GL_ZERO,
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}, // ETC2A
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2020-09-25 11:07:56 +08:00
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/* s3tc */
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{
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GL_COMPRESSED_RGBA_S3TC_DXT1_EXT,
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GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT1_EXT,
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GL_COMPRESSED_RGBA_S3TC_DXT1_EXT,
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GL_COMPRESSED_RGBA_S3TC_DXT1_EXT,
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GL_ZERO,
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}, // S3TC_DXT1
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{
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GL_COMPRESSED_RGBA_S3TC_DXT3_EXT,
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GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT3_EXT,
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GL_COMPRESSED_RGBA_S3TC_DXT3_EXT,
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GL_COMPRESSED_RGBA_S3TC_DXT3_EXT,
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GL_ZERO,
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}, // S3TC_DXT3
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{
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GL_COMPRESSED_RGBA_S3TC_DXT5_EXT,
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GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT5_EXT,
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GL_COMPRESSED_RGBA_S3TC_DXT5_EXT,
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GL_COMPRESSED_RGBA_S3TC_DXT5_EXT,
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GL_ZERO,
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}, // S3TC_DXT5
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2020-09-25 11:07:56 +08:00
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/* atc */
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2021-12-25 10:04:45 +08:00
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{
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GL_ATC_RGB_AMD,
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GL_ZERO,
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GL_ATC_RGB_AMD,
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GL_ATC_RGB_AMD,
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GL_ZERO,
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}, // ATC
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{
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GL_ATC_RGBA_EXPLICIT_ALPHA_AMD,
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GL_ZERO,
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GL_ATC_RGBA_EXPLICIT_ALPHA_AMD,
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GL_ATC_RGBA_EXPLICIT_ALPHA_AMD,
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GL_ZERO,
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}, // ATCE
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{
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GL_ATC_RGBA_INTERPOLATED_ALPHA_AMD,
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GL_ZERO,
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GL_ATC_RGBA_INTERPOLATED_ALPHA_AMD,
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GL_ATC_RGBA_INTERPOLATED_ALPHA_AMD,
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GL_ZERO,
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}, // ATCI
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2020-09-25 11:07:56 +08:00
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/* astc */
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2021-12-25 10:04:45 +08:00
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{
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GL_COMPRESSED_RGBA_ASTC_4x4_KHR,
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GL_COMPRESSED_SRGB8_ALPHA8_ASTC_4x4_KHR,
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GL_COMPRESSED_RGBA_ASTC_4x4_KHR,
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GL_COMPRESSED_RGBA_ASTC_4x4_KHR,
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GL_ZERO,
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}, // ASTC4x4
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{
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GL_COMPRESSED_RGBA_ASTC_5x5_KHR,
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GL_COMPRESSED_SRGB8_ALPHA8_ASTC_5x5_KHR,
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GL_COMPRESSED_RGBA_ASTC_5x5_KHR,
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GL_COMPRESSED_RGBA_ASTC_5x5_KHR,
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GL_ZERO,
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}, // ASTC5x5
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{
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GL_COMPRESSED_RGBA_ASTC_6x6_KHR,
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GL_COMPRESSED_SRGB8_ALPHA8_ASTC_6x6_KHR,
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GL_COMPRESSED_RGBA_ASTC_6x6_KHR,
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GL_COMPRESSED_RGBA_ASTC_6x6_KHR,
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GL_ZERO,
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}, // ASTC6x6
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{
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GL_COMPRESSED_RGBA_ASTC_8x5_KHR,
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GL_COMPRESSED_SRGB8_ALPHA8_ASTC_8x5_KHR,
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GL_COMPRESSED_RGBA_ASTC_8x5_KHR,
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GL_COMPRESSED_RGBA_ASTC_8x5_KHR,
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GL_ZERO,
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}, // ASTC8x5
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{
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GL_COMPRESSED_RGBA_ASTC_8x6_KHR,
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GL_COMPRESSED_SRGB8_ALPHA8_ASTC_8x6_KHR,
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GL_COMPRESSED_RGBA_ASTC_8x6_KHR,
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GL_COMPRESSED_RGBA_ASTC_8x6_KHR,
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GL_ZERO,
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}, // ASTC8x6
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{
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GL_COMPRESSED_RGBA_ASTC_8x8_KHR,
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GL_COMPRESSED_SRGB8_ALPHA8_ASTC_8x8_KHR,
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GL_COMPRESSED_RGBA_ASTC_8x8_KHR,
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GL_COMPRESSED_RGBA_ASTC_8x8_KHR,
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GL_ZERO,
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}, // ASTC8x8
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{
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GL_COMPRESSED_RGBA_ASTC_10x5_KHR,
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GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x5_KHR,
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GL_COMPRESSED_RGBA_ASTC_10x5_KHR,
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GL_COMPRESSED_RGBA_ASTC_10x5_KHR,
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GL_ZERO,
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}, // ASTC10x5
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2020-09-25 11:07:56 +08:00
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/* nomral */
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2021-12-25 10:04:45 +08:00
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{
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GL_RGBA,
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GL_SRGB8_ALPHA8_EXT,
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GL_RGBA,
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GL_RGBA,
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GL_UNSIGNED_BYTE,
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}, // RGBA8
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{
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GL_RGBA,
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GL_SRGB8_ALPHA8_EXT,
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GL_BGRA_EXT,
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GL_BGRA_EXT,
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GL_UNSIGNED_BYTE,
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}, // BGRA8
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{
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GL_RGB,
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GL_SRGB_EXT,
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GL_RGB,
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GL_RGB,
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GL_UNSIGNED_BYTE,
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}, // RGB8
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{GL_RGB, GL_ZERO, GL_RGB, GL_RGB, GL_UNSIGNED_SHORT_5_6_5}, // RGB565 === MTLPixelFormatB5G6R5Unorm
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{GL_RGBA, GL_ZERO, GL_RGBA, GL_RGBA, GL_UNSIGNED_SHORT_4_4_4_4}, // RGBA4 === MTLPixelFormatABGR4Unorm
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{GL_RGBA, GL_ZERO, GL_RGBA, GL_RGBA /*GL_BGRA_EXT*/,
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GL_UNSIGNED_SHORT_5_5_5_1}, // RGB5A1 === MTLPixelFormatA1BGR5Unorm
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{
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GL_ALPHA,
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GL_ZERO,
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GL_ALPHA,
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GL_ALPHA,
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GL_UNSIGNED_BYTE,
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}, // A8
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{
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GL_LUMINANCE,
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GL_ZERO,
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GL_LUMINANCE,
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GL_LUMINANCE,
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GL_UNSIGNED_BYTE,
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}, // L8
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{
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GL_LUMINANCE_ALPHA,
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GL_ZERO,
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GL_LUMINANCE_ALPHA,
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GL_LUMINANCE_ALPHA,
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GL_UNSIGNED_BYTE,
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}, // LA8
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/* depth stencil internalFormat | internalFormatSrgb | format | formatSrgb | type */
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2020-10-20 19:50:34 +08:00
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#if defined(CC_USE_GLES)
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2021-12-25 10:04:45 +08:00
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{
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GL_DEPTH_STENCIL_OES,
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GL_ZERO,
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GL_DEPTH_STENCIL_OES,
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GL_DEPTH_STENCIL_OES,
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GL_UNSIGNED_INT_24_8_OES,
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}, // D24S8
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2020-10-20 19:50:34 +08:00
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#else
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2021-12-25 10:04:45 +08:00
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{
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GL_DEPTH24_STENCIL8,
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GL_ZERO,
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GL_DEPTH_STENCIL,
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GL_DEPTH_STENCIL,
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GL_UNSIGNED_INT_24_8,
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}, // D24S8
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2020-10-20 19:50:34 +08:00
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#endif
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2020-09-25 11:07:56 +08:00
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};
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2021-12-25 10:04:45 +08:00
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static_assert(CC_ARRAYSIZE(s_textureFormats) == (int)PixelFormat::COUNT,
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"The OpenGL GPU texture format info table incomplete!");
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2020-09-25 11:07:56 +08:00
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/*
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2021-12-25 10:04:45 +08:00
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* !!!Note:
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* PixelFormat::RGBA4:
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* GL_BGRA_EXT, GL_BGRA_EXT, GL_UNSIGNED_SHORT_4_4_4_4_REV_EXT not match MTLPixelFormatABGR4Unorm
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* Unexpected render result is FPS label is PAN-BLUE
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*/
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2019-11-23 20:27:39 +08:00
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GLenum UtilsGL::toGLAttributeType(VertexFormat vertexFormat)
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{
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GLenum ret = GL_INT;
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switch (vertexFormat)
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{
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case VertexFormat::FLOAT4:
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case VertexFormat::FLOAT3:
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case VertexFormat::FLOAT2:
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case VertexFormat::FLOAT:
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ret = GL_FLOAT;
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break;
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case VertexFormat::INT4:
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case VertexFormat::INT3:
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case VertexFormat::INT2:
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case VertexFormat::INT:
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ret = GL_INT;
|
|
|
|
break;
|
|
|
|
case VertexFormat::UBYTE4:
|
|
|
|
ret = GL_UNSIGNED_BYTE;
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
|
|
|
GLsizei UtilsGL::getGLAttributeSize(VertexFormat vertexFormat)
|
|
|
|
{
|
|
|
|
GLsizei ret = 0;
|
|
|
|
switch (vertexFormat)
|
|
|
|
{
|
|
|
|
case VertexFormat::FLOAT4:
|
|
|
|
case VertexFormat::INT4:
|
|
|
|
case VertexFormat::UBYTE4:
|
|
|
|
ret = 4;
|
|
|
|
break;
|
|
|
|
case VertexFormat::FLOAT3:
|
|
|
|
case VertexFormat::INT3:
|
|
|
|
ret = 3;
|
|
|
|
break;
|
|
|
|
case VertexFormat::FLOAT2:
|
|
|
|
case VertexFormat::INT2:
|
|
|
|
ret = 2;
|
|
|
|
break;
|
|
|
|
case VertexFormat::FLOAT:
|
|
|
|
case VertexFormat::INT:
|
|
|
|
ret = 1;
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
|
|
|
GLsizei UtilsGL::getGLDataTypeSize(GLenum size)
|
|
|
|
{
|
|
|
|
GLsizei ret = 0;
|
|
|
|
switch (size)
|
|
|
|
{
|
|
|
|
case GL_BOOL:
|
|
|
|
case GL_BYTE:
|
|
|
|
case GL_UNSIGNED_BYTE:
|
|
|
|
ret = sizeof(GLbyte);
|
|
|
|
break;
|
|
|
|
case GL_BOOL_VEC2:
|
|
|
|
case GL_SHORT:
|
|
|
|
case GL_UNSIGNED_SHORT:
|
|
|
|
ret = sizeof(GLshort);
|
|
|
|
break;
|
|
|
|
case GL_BOOL_VEC3:
|
|
|
|
ret = sizeof(GLboolean);
|
|
|
|
break;
|
|
|
|
case GL_BOOL_VEC4:
|
|
|
|
case GL_INT:
|
|
|
|
case GL_UNSIGNED_INT:
|
|
|
|
case GL_FLOAT:
|
|
|
|
ret = sizeof(GLfloat);
|
|
|
|
break;
|
|
|
|
case GL_FLOAT_VEC2:
|
|
|
|
case GL_INT_VEC2:
|
|
|
|
ret = sizeof(GLfloat) * 2;
|
|
|
|
break;
|
|
|
|
case GL_FLOAT_VEC3:
|
|
|
|
case GL_INT_VEC3:
|
|
|
|
ret = sizeof(GLfloat) * 3;
|
|
|
|
break;
|
|
|
|
case GL_FLOAT_MAT2:
|
|
|
|
case GL_FLOAT_VEC4:
|
|
|
|
case GL_INT_VEC4:
|
|
|
|
ret = sizeof(GLfloat) * 4;
|
|
|
|
break;
|
|
|
|
case GL_FLOAT_MAT3:
|
|
|
|
ret = sizeof(GLfloat) * 9;
|
|
|
|
break;
|
|
|
|
case GL_FLOAT_MAT4:
|
|
|
|
ret = sizeof(GLfloat) * 16;
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
|
|
|
GLint UtilsGL::toGLMagFilter(SamplerFilter magFilter)
|
|
|
|
{
|
|
|
|
GLint ret = GL_LINEAR;
|
|
|
|
switch (magFilter)
|
|
|
|
{
|
|
|
|
case SamplerFilter::LINEAR:
|
|
|
|
ret = GL_LINEAR;
|
|
|
|
break;
|
|
|
|
case SamplerFilter::NEAREST:
|
|
|
|
ret = GL_NEAREST;
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
|
|
|
GLint UtilsGL::toGLMinFilter(SamplerFilter minFilter, bool hasMipmaps, bool isPow2)
|
|
|
|
{
|
|
|
|
if (hasMipmaps && !isPow2)
|
|
|
|
{
|
2021-12-25 10:04:45 +08:00
|
|
|
CCLOG("Change minification filter to either NEAREST or LINEAR since non-power-of-two texture occur in %s %s %d",
|
|
|
|
__FILE__, __FUNCTION__, __LINE__);
|
2019-11-23 20:27:39 +08:00
|
|
|
if (SamplerFilter::LINEAR == minFilter)
|
|
|
|
return GL_LINEAR;
|
|
|
|
else
|
|
|
|
return GL_NEAREST;
|
|
|
|
}
|
|
|
|
|
|
|
|
switch (minFilter)
|
|
|
|
{
|
2021-12-25 10:04:45 +08:00
|
|
|
case SamplerFilter::LINEAR:
|
|
|
|
return GL_LINEAR;
|
|
|
|
case SamplerFilter::LINEAR_MIPMAP_LINEAR:
|
|
|
|
return GL_LINEAR_MIPMAP_LINEAR;
|
|
|
|
case SamplerFilter::LINEAR_MIPMAP_NEAREST:
|
|
|
|
return GL_LINEAR_MIPMAP_NEAREST;
|
|
|
|
case SamplerFilter::NEAREST:
|
|
|
|
return GL_NEAREST;
|
|
|
|
case SamplerFilter::NEAREST_MIPMAP_NEAREST:
|
|
|
|
return GL_NEAREST_MIPMAP_NEAREST;
|
|
|
|
case SamplerFilter::NEAREST_MIPMAP_LINEAR:
|
|
|
|
return GL_NEAREST_MIPMAP_LINEAR;
|
|
|
|
default:
|
|
|
|
break;
|
2019-11-23 20:27:39 +08:00
|
|
|
}
|
|
|
|
|
|
|
|
return GL_NEAREST;
|
|
|
|
}
|
|
|
|
|
|
|
|
GLint UtilsGL::toGLAddressMode(SamplerAddressMode addressMode, bool isPow2)
|
|
|
|
{
|
|
|
|
GLint ret = GL_REPEAT;
|
|
|
|
if (!isPow2 && (addressMode != SamplerAddressMode::CLAMP_TO_EDGE))
|
|
|
|
{
|
2021-12-25 10:04:45 +08:00
|
|
|
CCLOG("Change texture wrap mode to CLAMP_TO_EDGE since non-power-of-two texture occur in %s %s %d", __FILE__,
|
|
|
|
__FUNCTION__, __LINE__);
|
2019-11-23 20:27:39 +08:00
|
|
|
return GL_CLAMP_TO_EDGE;
|
|
|
|
}
|
|
|
|
|
|
|
|
switch (addressMode)
|
|
|
|
{
|
|
|
|
case SamplerAddressMode::REPEAT:
|
|
|
|
ret = GL_REPEAT;
|
|
|
|
break;
|
|
|
|
case SamplerAddressMode::MIRROR_REPEAT:
|
|
|
|
ret = GL_MIRRORED_REPEAT;
|
|
|
|
break;
|
|
|
|
case SamplerAddressMode::CLAMP_TO_EDGE:
|
|
|
|
ret = GL_CLAMP_TO_EDGE;
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
2021-12-25 10:04:45 +08:00
|
|
|
void UtilsGL::toGLTypes(PixelFormat textureFormat,
|
|
|
|
GLint& internalFormat,
|
|
|
|
GLuint& format,
|
|
|
|
GLenum& type,
|
|
|
|
bool& isCompressed)
|
2019-11-23 20:27:39 +08:00
|
|
|
{
|
2021-12-25 10:04:45 +08:00
|
|
|
if (UTILS_LIKELY(textureFormat < PixelFormat::COUNT))
|
|
|
|
{
|
|
|
|
auto& info = s_textureFormats[(int)textureFormat];
|
2020-09-25 11:07:56 +08:00
|
|
|
internalFormat = info.internalFmt;
|
2021-12-25 10:04:45 +08:00
|
|
|
format = info.fmt;
|
|
|
|
type = info.type;
|
|
|
|
isCompressed = PixelFormatUtils::isCompressed(textureFormat);
|
2019-11-23 20:27:39 +08:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
GLenum UtilsGL::toGLComareFunction(CompareFunction compareFunction)
|
|
|
|
{
|
|
|
|
GLenum ret = GL_ALWAYS;
|
|
|
|
switch (compareFunction)
|
|
|
|
{
|
|
|
|
case CompareFunction::NEVER:
|
|
|
|
ret = GL_NEVER;
|
|
|
|
break;
|
|
|
|
case CompareFunction::LESS:
|
|
|
|
ret = GL_LESS;
|
|
|
|
break;
|
|
|
|
case CompareFunction::LESS_EQUAL:
|
|
|
|
ret = GL_LEQUAL;
|
|
|
|
break;
|
|
|
|
case CompareFunction::GREATER:
|
|
|
|
ret = GL_GREATER;
|
|
|
|
break;
|
|
|
|
case CompareFunction::GREATER_EQUAL:
|
|
|
|
ret = GL_GEQUAL;
|
|
|
|
break;
|
|
|
|
case CompareFunction::NOT_EQUAL:
|
|
|
|
ret = GL_NOTEQUAL;
|
|
|
|
break;
|
|
|
|
case CompareFunction::EQUAL:
|
|
|
|
ret = GL_EQUAL;
|
|
|
|
break;
|
|
|
|
case CompareFunction::ALWAYS:
|
|
|
|
ret = GL_ALWAYS;
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
|
|
|
GLenum UtilsGL::toGLStencilOperation(StencilOperation stencilOperation)
|
|
|
|
{
|
|
|
|
GLenum ret = GL_KEEP;
|
|
|
|
switch (stencilOperation)
|
|
|
|
{
|
|
|
|
case StencilOperation::KEEP:
|
|
|
|
ret = GL_KEEP;
|
|
|
|
break;
|
|
|
|
case StencilOperation::ZERO:
|
|
|
|
ret = GL_ZERO;
|
|
|
|
break;
|
|
|
|
case StencilOperation::REPLACE:
|
|
|
|
ret = GL_REPLACE;
|
|
|
|
break;
|
|
|
|
case StencilOperation::INVERT:
|
|
|
|
ret = GL_INVERT;
|
|
|
|
break;
|
|
|
|
case StencilOperation::INCREMENT_WRAP:
|
|
|
|
ret = GL_INCR_WRAP;
|
|
|
|
break;
|
|
|
|
case StencilOperation::DECREMENT_WRAP:
|
|
|
|
ret = GL_DECR_WRAP;
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
|
|
|
GLenum UtilsGL::toGLBlendOperation(BlendOperation blendOperation)
|
|
|
|
{
|
|
|
|
GLenum ret = GL_FUNC_ADD;
|
|
|
|
switch (blendOperation)
|
|
|
|
{
|
|
|
|
case BlendOperation::ADD:
|
|
|
|
ret = GL_FUNC_ADD;
|
|
|
|
break;
|
|
|
|
case BlendOperation::SUBTRACT:
|
|
|
|
ret = GL_FUNC_SUBTRACT;
|
|
|
|
break;
|
|
|
|
case BlendOperation::RESERVE_SUBTRACT:
|
|
|
|
ret = GL_FUNC_REVERSE_SUBTRACT;
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
|
|
|
GLenum UtilsGL::toGLBlendFactor(BlendFactor blendFactor)
|
|
|
|
{
|
|
|
|
GLenum ret = GL_ONE;
|
|
|
|
switch (blendFactor)
|
|
|
|
{
|
|
|
|
case BlendFactor::ZERO:
|
|
|
|
ret = GL_ZERO;
|
|
|
|
break;
|
|
|
|
case BlendFactor::ONE:
|
|
|
|
ret = GL_ONE;
|
|
|
|
break;
|
|
|
|
case BlendFactor::SRC_COLOR:
|
|
|
|
ret = GL_SRC_COLOR;
|
|
|
|
break;
|
|
|
|
case BlendFactor::ONE_MINUS_SRC_COLOR:
|
|
|
|
ret = GL_ONE_MINUS_SRC_COLOR;
|
|
|
|
break;
|
|
|
|
case BlendFactor::SRC_ALPHA:
|
|
|
|
ret = GL_SRC_ALPHA;
|
|
|
|
break;
|
|
|
|
case BlendFactor::ONE_MINUS_SRC_ALPHA:
|
|
|
|
ret = GL_ONE_MINUS_SRC_ALPHA;
|
|
|
|
break;
|
|
|
|
case BlendFactor::DST_COLOR:
|
|
|
|
ret = GL_DST_COLOR;
|
|
|
|
break;
|
|
|
|
case BlendFactor::ONE_MINUS_DST_COLOR:
|
|
|
|
ret = GL_ONE_MINUS_DST_COLOR;
|
|
|
|
break;
|
|
|
|
case BlendFactor::DST_ALPHA:
|
|
|
|
ret = GL_DST_ALPHA;
|
|
|
|
break;
|
|
|
|
case BlendFactor::ONE_MINUS_DST_ALPHA:
|
|
|
|
ret = GL_ONE_MINUS_DST_ALPHA;
|
|
|
|
break;
|
|
|
|
case BlendFactor::SRC_ALPHA_SATURATE:
|
|
|
|
ret = GL_SRC_ALPHA_SATURATE;
|
|
|
|
break;
|
|
|
|
case BlendFactor::BLEND_CLOLOR:
|
|
|
|
ret = GL_BLEND_COLOR;
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
|
|
|
GLenum UtilsGL::toGLFrontFace(Winding winding)
|
|
|
|
{
|
|
|
|
if (Winding::CLOCK_WISE == winding)
|
|
|
|
return GL_CW;
|
|
|
|
else
|
|
|
|
return GL_CCW;
|
|
|
|
}
|
|
|
|
|
|
|
|
GLenum UtilsGL::toGLPrimitiveType(PrimitiveType primitiveType)
|
|
|
|
{
|
|
|
|
GLenum ret = GL_TRIANGLES;
|
|
|
|
switch (primitiveType)
|
|
|
|
{
|
|
|
|
case PrimitiveType::POINT:
|
|
|
|
ret = GL_POINTS;
|
|
|
|
break;
|
|
|
|
case PrimitiveType::LINE:
|
|
|
|
ret = GL_LINES;
|
|
|
|
break;
|
|
|
|
case PrimitiveType::LINE_STRIP:
|
|
|
|
ret = GL_LINE_STRIP;
|
|
|
|
break;
|
|
|
|
case PrimitiveType::TRIANGLE:
|
|
|
|
ret = GL_TRIANGLES;
|
|
|
|
break;
|
|
|
|
case PrimitiveType::TRIANGLE_STRIP:
|
|
|
|
ret = GL_TRIANGLE_STRIP;
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
|
|
|
GLenum UtilsGL::toGLIndexType(IndexFormat indexType)
|
|
|
|
{
|
|
|
|
GLenum ret = GL_BYTE;
|
|
|
|
switch (indexType)
|
|
|
|
{
|
|
|
|
case IndexFormat::U_INT:
|
|
|
|
ret = GL_UNSIGNED_INT;
|
|
|
|
break;
|
|
|
|
case IndexFormat::U_SHORT:
|
|
|
|
ret = GL_UNSIGNED_SHORT;
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
|
|
|
GLenum UtilsGL::toGLCullMode(CullMode mode)
|
|
|
|
{
|
|
|
|
if (CullMode::BACK == mode)
|
|
|
|
return GL_BACK;
|
|
|
|
else
|
|
|
|
return GL_FRONT;
|
|
|
|
}
|
|
|
|
|
2020-09-12 15:34:09 +08:00
|
|
|
CC_BACKEND_END
|