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Decoupling rlgl from platform layer

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Now rlgl only depends on OpenGL and it's completely decoupled from platform layer libraries (EGL)
This commit is contained in:
Ray 2021-04-28 23:57:46 +02:00
parent f516f4099b
commit ffadeeeb84
2 changed files with 21 additions and 18 deletions
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6
src/core.c
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@ -253,13 +253,13 @@
#include "EGL/egl.h" // Native platform windowing system interface
#include "EGL/eglext.h" // EGL extensions
#include "GLES2/gl2.h" // OpenGL ES 2.0 library
//#include "GLES2/gl2.h" // OpenGL ES 2.0 library (not required in this module)
#endif
#if defined(PLATFORM_UWP)
#include "EGL/egl.h" // Native platform windowing system interface
#include "EGL/eglext.h" // EGL extensions
#include "GLES2/gl2.h" // OpenGL ES 2.0 library
//#include "GLES2/gl2.h" // OpenGL ES 2.0 library (not required in this module)
#include "uwp_events.h" // UWP bootstrapping functions
#endif
@ -4356,7 +4356,7 @@ static bool InitGraphicsDevice(int width, int height)
#if defined(PLATFORM_DESKTOP) || defined(PLATFORM_WEB)
rlLoadExtensions(glfwGetProcAddress);
#else
rlLoadExtensions(NULL); // Uses eglGetProcAddress() internally
rlLoadExtensions(eglGetProcAddress);
#endif
// Initialize OpenGL context (states and resources)

29
src/rlgl.h
View file

@ -544,7 +544,7 @@ RLAPI void rlSetBlendFactors(int glSrcFactor, int glDstFactor, int glEquation);
// rlgl initialization functions
RLAPI void rlglInit(int width, int height); // Initialize rlgl (buffers, shaders, textures, states)
RLAPI void rlglClose(void); // De-inititialize rlgl (buffers, shaders, textures)
RLAPI void rlLoadExtensions(void* loader); // Load OpenGL extensions (loader function pointer required)
RLAPI void rlLoadExtensions(void *loader); // Load OpenGL extensions (loader function required)
RLAPI int rlGetVersion(void); // Returns current OpenGL version
RLAPI int rlGetFramebufferWidth(void); // Get default framebuffer width
RLAPI int rlGetFramebufferHeight(void); // Get default framebuffer height
@ -689,7 +689,7 @@ RLAPI void rlLoadDrawQuad(void); // Load and draw a quad
#if defined(GRAPHICS_API_OPENGL_ES2)
#define GL_GLEXT_PROTOTYPES
#include <EGL/egl.h> // EGL library
//#include <EGL/egl.h> // EGL library -> not required, platform layer
#include <GLES2/gl2.h> // OpenGL ES 2.0 library
#include <GLES2/gl2ext.h> // OpenGL ES 2.0 extensions library
@ -844,6 +844,9 @@ typedef struct rlglData {
} ExtSupported; // Extensions supported flags
} rlglData;
typedef void *(*rlglLoadProc)(const char *name); // OpenGL extension functions loader signature (same as GLADloadproc)
#endif // GRAPHICS_API_OPENGL_33 || GRAPHICS_API_OPENGL_ES2
//----------------------------------------------------------------------------------
@ -1664,7 +1667,7 @@ void rlglClose(void)
}
// Load OpenGL extensions
// NOTE: External loader function could be passed as a pointer
// NOTE: External loader function must be provided
void rlLoadExtensions(void *loader)
{
#if defined(GRAPHICS_API_OPENGL_33) // Also defined for GRAPHICS_API_OPENGL_21
@ -1747,10 +1750,10 @@ void rlLoadExtensions(void *loader)
{
// The extension is supported by our hardware and driver, try to get related functions pointers
// NOTE: emscripten does not support VAOs natively, it uses emulation and it reduces overall performance...
glGenVertexArrays = (PFNGLGENVERTEXARRAYSOESPROC)eglGetProcAddress("glGenVertexArraysOES");
glBindVertexArray = (PFNGLBINDVERTEXARRAYOESPROC)eglGetProcAddress("glBindVertexArrayOES");
glDeleteVertexArrays = (PFNGLDELETEVERTEXARRAYSOESPROC)eglGetProcAddress("glDeleteVertexArraysOES");
//glIsVertexArray = (PFNGLISVERTEXARRAYOESPROC)eglGetProcAddress("glIsVertexArrayOES"); // NOTE: Fails in WebGL, omitted
glGenVertexArrays = (PFNGLGENVERTEXARRAYSOESPROC)((rlglLoadProc)loader)("glGenVertexArraysOES");
glBindVertexArray = (PFNGLBINDVERTEXARRAYOESPROC)((rlglLoadProc)loader)("glBindVertexArrayOES");
glDeleteVertexArrays = (PFNGLDELETEVERTEXARRAYSOESPROC)((rlglLoadProc)loader)("glDeleteVertexArraysOES");
//glIsVertexArray = (PFNGLISVERTEXARRAYOESPROC)loader("glIsVertexArrayOES"); // NOTE: Fails in WebGL, omitted
if ((glGenVertexArrays != NULL) && (glBindVertexArray != NULL) && (glDeleteVertexArrays != NULL)) RLGL.ExtSupported.vao = true;
}
@ -1758,9 +1761,9 @@ void rlLoadExtensions(void *loader)
// Check instanced rendering support
if (strcmp(extList[i], (const char *)"GL_ANGLE_instanced_arrays") == 0) // Web ANGLE
{
glDrawArraysInstanced = (PFNGLDRAWARRAYSINSTANCEDEXTPROC)eglGetProcAddress("glDrawArraysInstancedANGLE");
glDrawElementsInstanced = (PFNGLDRAWELEMENTSINSTANCEDEXTPROC)eglGetProcAddress("glDrawElementsInstancedANGLE");
glVertexAttribDivisor = (PFNGLVERTEXATTRIBDIVISOREXTPROC)eglGetProcAddress("glVertexAttribDivisorANGLE");
glDrawArraysInstanced = (PFNGLDRAWARRAYSINSTANCEDEXTPROC)((rlglLoadProc)loader)("glDrawArraysInstancedANGLE");
glDrawElementsInstanced = (PFNGLDRAWELEMENTSINSTANCEDEXTPROC)((rlglLoadProc)loader)("glDrawElementsInstancedANGLE");
glVertexAttribDivisor = (PFNGLVERTEXATTRIBDIVISOREXTPROC)((rlglLoadProc)loader)("glVertexAttribDivisorANGLE");
if ((glDrawArraysInstanced != NULL) && (glDrawElementsInstanced != NULL) && (glVertexAttribDivisor != NULL)) RLGL.ExtSupported.instancing = true;
}
@ -1769,9 +1772,9 @@ void rlLoadExtensions(void *loader)
if ((strcmp(extList[i], (const char *)"GL_EXT_draw_instanced") == 0) && // Standard EXT
(strcmp(extList[i], (const char *)"GL_EXT_instanced_arrays") == 0))
{
glDrawArraysInstanced = (PFNGLDRAWARRAYSINSTANCEDEXTPROC)eglGetProcAddress("glDrawArraysInstancedEXT");
glDrawElementsInstanced = (PFNGLDRAWELEMENTSINSTANCEDEXTPROC)eglGetProcAddress("glDrawElementsInstancedEXT");
glVertexAttribDivisor = (PFNGLVERTEXATTRIBDIVISOREXTPROC)eglGetProcAddress("glVertexAttribDivisorEXT");
glDrawArraysInstanced = (PFNGLDRAWARRAYSINSTANCEDEXTPROC)((rlglLoadProc)loader)("glDrawArraysInstancedEXT");
glDrawElementsInstanced = (PFNGLDRAWELEMENTSINSTANCEDEXTPROC)((rlglLoadProc)loader)("glDrawElementsInstancedEXT");
glVertexAttribDivisor = (PFNGLVERTEXATTRIBDIVISOREXTPROC)((rlglLoadProc)loader)("glVertexAttribDivisorEXT");
if ((glDrawArraysInstanced != NULL) && (glDrawElementsInstanced != NULL) && (glVertexAttribDivisor != NULL)) RLGL.ExtSupported.instancing = true;
}