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      1 
      2 /*
      3  * Copyright 2015 Google Inc.
      4  *
      5  * Use of this source code is governed by a BSD-style license that can be
      6  * found in the LICENSE file.
      7  */
      8 
      9 #ifndef GrGLTypes_DEFINED
     10 #define GrGLTypes_DEFINED
     11 
     12 #include "GrGLConfig.h"
     13 #include "SkRefCnt.h"
     14 
     15 /**
     16  * Classifies GL contexts by which standard they implement (currently as OpenGL vs. OpenGL ES).
     17  */
     18 enum GrGLStandard {
     19     kNone_GrGLStandard,
     20     kGL_GrGLStandard,
     21     kGLES_GrGLStandard,
     22 };
     23 static const int kGrGLStandardCnt = 3;
     24 
     25 ///////////////////////////////////////////////////////////////////////////////
     26 
     27 /**
     28  * Declares typedefs for all the GL functions used in GrGLInterface
     29  */
     30 
     31 typedef unsigned int GrGLenum;
     32 typedef unsigned char GrGLboolean;
     33 typedef unsigned int GrGLbitfield;
     34 typedef signed char GrGLbyte;
     35 typedef char GrGLchar;
     36 typedef short GrGLshort;
     37 typedef int GrGLint;
     38 typedef int GrGLsizei;
     39 typedef int64_t GrGLint64;
     40 typedef unsigned char GrGLubyte;
     41 typedef unsigned short GrGLushort;
     42 typedef unsigned int GrGLuint;
     43 typedef uint64_t GrGLuint64;
     44 typedef float GrGLfloat;
     45 typedef float GrGLclampf;
     46 typedef double GrGLdouble;
     47 typedef double GrGLclampd;
     48 typedef void GrGLvoid;
     49 #ifndef SK_IGNORE_64BIT_OPENGL_CHANGES
     50 #ifdef _WIN64
     51 typedef signed long long int GrGLintptr;
     52 typedef signed long long int GrGLsizeiptr;
     53 #else
     54 typedef signed long int GrGLintptr;
     55 typedef signed long int GrGLsizeiptr;
     56 #endif
     57 #else
     58 typedef signed long int GrGLintptr;
     59 typedef signed long int GrGLsizeiptr;
     60 #endif
     61 typedef void* GrGLeglImage;
     62 typedef struct __GLsync* GrGLsync;
     63 
     64 struct GrGLDrawArraysIndirectCommand {
     65     GrGLuint fCount;
     66     GrGLuint fInstanceCount;
     67     GrGLuint fFirst;
     68     GrGLuint fBaseInstance;  // Requires EXT_base_instance on ES.
     69 };
     70 
     71 GR_STATIC_ASSERT(16 == sizeof(GrGLDrawArraysIndirectCommand));
     72 
     73 struct GrGLDrawElementsIndirectCommand {
     74     GrGLuint fCount;
     75     GrGLuint fInstanceCount;
     76     GrGLuint fFirstIndex;
     77     GrGLuint fBaseVertex;
     78     GrGLuint fBaseInstance;  // Requires EXT_base_instance on ES.
     79 };
     80 
     81 GR_STATIC_ASSERT(20 == sizeof(GrGLDrawElementsIndirectCommand));
     82 
     83 /**
     84  * KHR_debug
     85  */
     86 typedef void (GR_GL_FUNCTION_TYPE* GRGLDEBUGPROC)(GrGLenum source,
     87                                                   GrGLenum type,
     88                                                   GrGLuint id,
     89                                                   GrGLenum severity,
     90                                                   GrGLsizei length,
     91                                                   const GrGLchar* message,
     92                                                   const void* userParam);
     93 
     94 /**
     95  * EGL types.
     96  */
     97 typedef void* GrEGLImage;
     98 typedef void* GrEGLDisplay;
     99 typedef void* GrEGLContext;
    100 typedef void* GrEGLClientBuffer;
    101 typedef unsigned int GrEGLenum;
    102 typedef int32_t GrEGLint;
    103 typedef unsigned int GrEGLBoolean;
    104 
    105 ///////////////////////////////////////////////////////////////////////////////
    106 /**
    107  * Types for interacting with GL resources created externally to Skia. GrBackendObjects for GL
    108  * textures are really const GrGLTexture*
    109  */
    110 
    111 struct GrGLTextureInfo {
    112     GrGLenum fTarget;
    113     GrGLuint fID;
    114 };
    115 
    116 GR_STATIC_ASSERT(sizeof(GrBackendObject) >= sizeof(const GrGLTextureInfo*));
    117 
    118 struct GrGLFramebufferInfo {
    119     GrGLuint fFBOID;
    120 };
    121 
    122 GR_STATIC_ASSERT(sizeof(GrBackendObject) >= sizeof(const GrGLFramebufferInfo*));
    123 
    124 #endif
    125