Add ARB_get_program_binary to glad to support shader cache over deskt…

…op GL

drivers/gles3/shader_gles3.cpp

@@ -507,15 +507,20 @@ String ShaderGLES3::_version_get_sha1(Version *p_version) const {
 	return hash_build.as_string().sha1_text();
 }
 
-#ifndef GLES_OVER_GL
+#ifndef WEB_ENABLED // not supported in webgl
 static const char *shader_file_header = "GLSC";
 static const uint32_t cache_file_version = 3;
 #endif
 
 bool ShaderGLES3::_load_from_cache(Version *p_version) {
-#ifdef GLES_OVER_GL // glGetProgramBinary and glProgramBinary require GL version 4.1 while GLAD is only configured for 3.3 right now
+#ifdef WEB_ENABLED // not supported in webgl
 	return false;
 #else
+#ifdef GLES_OVER_GL
+	if (glProgramBinary == NULL) { // ARB_get_program_binary extension not available
+		return false;
+	}
+#endif
 	String sha1 = _version_get_sha1(p_version);
 	String path = shader_cache_dir.path_join(name).path_join(base_sha256).path_join(sha1) + ".cache";
 
@@ -533,14 +538,14 @@ bool ShaderGLES3::_load_from_cache(Version *p_version) {
 		return false; // wrong version
 	}
 
-	int variant_count = static_cast<int>(f->get_32());
-	ERR_FAIL_COND_V_MSG(variant_count != this->variant_count, false, "shader cache variant count mismatch, expected " + itos(this->variant_count) + " got " + itos(variant_count)); //should not happen but check
+	int cache_variant_count = static_cast<int>(f->get_32());
+	ERR_FAIL_COND_V_MSG(cache_variant_count != this->variant_count, false, "shader cache variant count mismatch, expected " + itos(this->variant_count) + " got " + itos(cache_variant_count)); //should not happen but check
 
 	LocalVector<OAHashMap<uint64_t, Version::Specialization>> variants;
-	for (int i = 0; i < variant_count; i++) {
-		uint32_t specialization_count = f->get_32();
+	for (int i = 0; i < cache_variant_count; i++) {
+		uint32_t cache_specialization_count = f->get_32();
 		OAHashMap<uint64_t, Version::Specialization> variant;
-		for (uint32_t j = 0; j < specialization_count; j++) {
+		for (uint32_t j = 0; j < cache_specialization_count; j++) {
 			uint64_t specialization_key = f->get_64();
 			uint32_t variant_size = f->get_32();
 			if (variant_size == 0) {
@@ -570,13 +575,18 @@ bool ShaderGLES3::_load_from_cache(Version *p_version) {
 	p_version->variants = variants;
 
 	return true;
-#endif
+#endif // WEB_ENABLED
 }
 
 void ShaderGLES3::_save_to_cache(Version *p_version) {
-#ifdef GLES_OVER_GL // glGetProgramBinary and glProgramBinary require GL version 4.1 while GLAD is only configured for 3.3 right now
+#ifdef WEB_ENABLED // not supported in webgl
 	return;
 #else
+#ifdef GLES_OVER_GL
+	if (glGetProgramBinary == NULL) { // ARB_get_program_binary extension not available
+		return;
+	}
+#endif
 	String sha1 = _version_get_sha1(p_version);
 	String path = shader_cache_dir.path_join(name).path_join(base_sha256).path_join(sha1) + ".cache";
 
@@ -588,8 +598,8 @@ void ShaderGLES3::_save_to_cache(Version *p_version) {
 	f->store_32(variant_count);
 
 	for (int i = 0; i < variant_count; i++) {
-		int specialization_count = p_version->variants[i].get_num_elements();
-		f->store_32(specialization_count);
+		int cache_specialization_count = p_version->variants[i].get_num_elements();
+		f->store_32(cache_specialization_count);
 
 		for (OAHashMap<uint64_t, ShaderGLES3::Version::Specialization>::Iterator it = p_version->variants[i].iter(); it.valid; it = p_version->variants[i].next_iter(it)) {
 			const uint64_t specialization_key = *it.key;
@@ -619,7 +629,7 @@ void ShaderGLES3::_save_to_cache(Version *p_version) {
 			f->store_buffer(compiled_program.ptr(), compiled_program.size());
 		}
 	}
-#endif
+#endif // WEB_ENABLED
 }
 
 void ShaderGLES3::_clear_version(Version *p_version) {

thirdparty/glad/gl.c

@@ -37,6 +37,7 @@ int GLAD_GL_VERSION_3_2 = 0;
 int GLAD_GL_VERSION_3_3 = 0;
 int GLAD_GL_ARB_debug_output = 0;
 int GLAD_GL_ARB_framebuffer_object = 0;
+int GLAD_GL_ARB_get_program_binary = 0;
 int GLAD_GL_EXT_framebuffer_blit = 0;
 int GLAD_GL_EXT_framebuffer_multisample = 0;
 int GLAD_GL_EXT_framebuffer_object = 0;
@@ -292,6 +293,7 @@ PFNGLGETPIXELMAPUIVPROC glad_glGetPixelMapuiv = NULL;
 PFNGLGETPIXELMAPUSVPROC glad_glGetPixelMapusv = NULL;
 PFNGLGETPOINTERVPROC glad_glGetPointerv = NULL;
 PFNGLGETPOLYGONSTIPPLEPROC glad_glGetPolygonStipple = NULL;
+PFNGLGETPROGRAMBINARYPROC glad_glGetProgramBinary = NULL;
 PFNGLGETPROGRAMINFOLOGPROC glad_glGetProgramInfoLog = NULL;
 PFNGLGETPROGRAMIVPROC glad_glGetProgramiv = NULL;
 PFNGLGETQUERYOBJECTI64VPROC glad_glGetQueryObjecti64v = NULL;
@@ -485,6 +487,8 @@ PFNGLPOPMATRIXPROC glad_glPopMatrix = NULL;
 PFNGLPOPNAMEPROC glad_glPopName = NULL;
 PFNGLPRIMITIVERESTARTINDEXPROC glad_glPrimitiveRestartIndex = NULL;
 PFNGLPRIORITIZETEXTURESPROC glad_glPrioritizeTextures = NULL;
+PFNGLPROGRAMBINARYPROC glad_glProgramBinary = NULL;
+PFNGLPROGRAMPARAMETERIPROC glad_glProgramParameteri = NULL;
 PFNGLPROVOKINGVERTEXPROC glad_glProvokingVertex = NULL;
 PFNGLPUSHATTRIBPROC glad_glPushAttrib = NULL;
 PFNGLPUSHCLIENTATTRIBPROC glad_glPushClientAttrib = NULL;
@@ -1588,6 +1592,12 @@ static void glad_gl_load_GL_ARB_framebuffer_object( GLADuserptrloadfunc load, vo
     glad_glRenderbufferStorage = (PFNGLRENDERBUFFERSTORAGEPROC) load(userptr, "glRenderbufferStorage");
     glad_glRenderbufferStorageMultisample = (PFNGLRENDERBUFFERSTORAGEMULTISAMPLEPROC) load(userptr, "glRenderbufferStorageMultisample");
 }
+static void glad_gl_load_GL_ARB_get_program_binary( GLADuserptrloadfunc load, void* userptr) {
+    if(!GLAD_GL_ARB_get_program_binary) return;
+    glad_glGetProgramBinary = (PFNGLGETPROGRAMBINARYPROC) load(userptr, "glGetProgramBinary");
+    glad_glProgramBinary = (PFNGLPROGRAMBINARYPROC) load(userptr, "glProgramBinary");
+    glad_glProgramParameteri = (PFNGLPROGRAMPARAMETERIPROC) load(userptr, "glProgramParameteri");
+}
 static void glad_gl_load_GL_EXT_framebuffer_blit( GLADuserptrloadfunc load, void* userptr) {
     if(!GLAD_GL_EXT_framebuffer_blit) return;
     glad_glBlitFramebufferEXT = (PFNGLBLITFRAMEBUFFEREXTPROC) load(userptr, "glBlitFramebufferEXT");
@@ -1729,6 +1739,7 @@ static int glad_gl_find_extensions_gl( int version) {
 
     GLAD_GL_ARB_debug_output = glad_gl_has_extension(version, exts, num_exts_i, exts_i, "GL_ARB_debug_output");
     GLAD_GL_ARB_framebuffer_object = glad_gl_has_extension(version, exts, num_exts_i, exts_i, "GL_ARB_framebuffer_object");
+    GLAD_GL_ARB_get_program_binary = glad_gl_has_extension(version, exts, num_exts_i, exts_i, "GL_ARB_get_program_binary");
     GLAD_GL_EXT_framebuffer_blit = glad_gl_has_extension(version, exts, num_exts_i, exts_i, "GL_EXT_framebuffer_blit");
     GLAD_GL_EXT_framebuffer_multisample = glad_gl_has_extension(version, exts, num_exts_i, exts_i, "GL_EXT_framebuffer_multisample");
     GLAD_GL_EXT_framebuffer_object = glad_gl_has_extension(version, exts, num_exts_i, exts_i, "GL_EXT_framebuffer_object");
@@ -1804,6 +1815,7 @@ int gladLoadGLUserPtr( GLADuserptrloadfunc load, void *userptr) {
     if (!glad_gl_find_extensions_gl(version)) return 0;
     glad_gl_load_GL_ARB_debug_output(load, userptr);
     glad_gl_load_GL_ARB_framebuffer_object(load, userptr);
+    glad_gl_load_GL_ARB_get_program_binary(load, userptr);
     glad_gl_load_GL_EXT_framebuffer_blit(load, userptr);
     glad_gl_load_GL_EXT_framebuffer_multisample(load, userptr);
     glad_gl_load_GL_EXT_framebuffer_object(load, userptr);

thirdparty/glad/glad/gl.h

@@ -1,11 +1,11 @@
 /**
- * Loader generated by glad 2.0.2 on Mon Nov  7 12:17:15 2022
+ * Loader generated by glad 2.0.4 on Sat Apr 29 13:24:27 2023
  *
  * SPDX-License-Identifier: (WTFPL OR CC0-1.0) AND Apache-2.0
  *
  * Generator: C/C++
  * Specification: gl
- * Extensions: 7
+ * Extensions: 8
  *
  * APIs:
  *  - gl:compatibility=3.3
@@ -19,10 +19,10 @@
  *  - ON_DEMAND = False
  *
  * Commandline:
- *    --api='gl:compatibility=3.3' --extensions='GL_ARB_debug_output,GL_ARB_framebuffer_object,GL_EXT_framebuffer_blit,GL_EXT_framebuffer_multisample,GL_EXT_framebuffer_object,GL_OVR_multiview,GL_OVR_multiview2' c --loader
+ *    --api='gl:compatibility=3.3' --extensions='GL_ARB_debug_output,GL_ARB_framebuffer_object,GL_ARB_get_program_binary,GL_EXT_framebuffer_blit,GL_EXT_framebuffer_multisample,GL_EXT_framebuffer_object,GL_OVR_multiview,GL_OVR_multiview2' c --loader
  *
  * Online:
- *    http://glad.sh/#api=gl%3Acompatibility%3D3.3&extensions=GL_ARB_debug_output%2CGL_ARB_framebuffer_object%2CGL_EXT_framebuffer_blit%2CGL_EXT_framebuffer_multisample%2CGL_EXT_framebuffer_object%2CGL_OVR_multiview%2CGL_OVR_multiview2&generator=c&options=LOADER
+ *    http://glad.sh/#api=gl%3Acompatibility%3D3.3&extensions=GL_ARB_debug_output%2CGL_ARB_framebuffer_object%2CGL_ARB_get_program_binary%2CGL_EXT_framebuffer_blit%2CGL_EXT_framebuffer_multisample%2CGL_EXT_framebuffer_object%2CGL_OVR_multiview%2CGL_OVR_multiview2&generator=c&options=LOADER
  *
  */
 
@@ -164,7 +164,7 @@ extern "C" {
 #define GLAD_VERSION_MAJOR(version) (version / 10000)
 #define GLAD_VERSION_MINOR(version) (version % 10000)
 
-#define GLAD_GENERATOR_VERSION "2.0.2"
+#define GLAD_GENERATOR_VERSION "2.0.4"
 
 typedef void (*GLADapiproc)(void);
 
@@ -889,6 +889,7 @@ typedef void (*GLADpostcallback)(void *ret, const char *name, GLADapiproc apipro
 #define GL_NO_ERROR 0
 #define GL_NUM_COMPRESSED_TEXTURE_FORMATS 0x86A2
 #define GL_NUM_EXTENSIONS 0x821D
+#define GL_NUM_PROGRAM_BINARY_FORMATS 0x87FE
 #define GL_OBJECT_LINEAR 0x2401
 #define GL_OBJECT_PLANE 0x2501
 #define GL_OBJECT_TYPE 0x9112
@@ -981,6 +982,9 @@ typedef void (*GLADpostcallback)(void *ret, const char *name, GLADapiproc apipro
 #define GL_PRIMITIVES_GENERATED 0x8C87
 #define GL_PRIMITIVE_RESTART 0x8F9D
 #define GL_PRIMITIVE_RESTART_INDEX 0x8F9E
+#define GL_PROGRAM_BINARY_FORMATS 0x87FF
+#define GL_PROGRAM_BINARY_LENGTH 0x8741
+#define GL_PROGRAM_BINARY_RETRIEVABLE_HINT 0x8257
 #define GL_PROGRAM_POINT_SIZE 0x8642
 #define GL_PROJECTION 0x1701
 #define GL_PROJECTION_MATRIX 0x0BA7
@@ -1605,6 +1609,8 @@ GLAD_API_CALL int GLAD_GL_VERSION_3_3;
 GLAD_API_CALL int GLAD_GL_ARB_debug_output;
 #define GL_ARB_framebuffer_object 1
 GLAD_API_CALL int GLAD_GL_ARB_framebuffer_object;
+#define GL_ARB_get_program_binary 1
+GLAD_API_CALL int GLAD_GL_ARB_get_program_binary;
 #define GL_EXT_framebuffer_blit 1
 GLAD_API_CALL int GLAD_GL_EXT_framebuffer_blit;
 #define GL_EXT_framebuffer_multisample 1
@@ -1864,6 +1870,7 @@ typedef void (GLAD_API_PTR *PFNGLGETPIXELMAPUIVPROC)(GLenum map, GLuint * values
 typedef void (GLAD_API_PTR *PFNGLGETPIXELMAPUSVPROC)(GLenum map, GLushort * values);
 typedef void (GLAD_API_PTR *PFNGLGETPOINTERVPROC)(GLenum pname, void ** params);
 typedef void (GLAD_API_PTR *PFNGLGETPOLYGONSTIPPLEPROC)(GLubyte * mask);
+typedef void (GLAD_API_PTR *PFNGLGETPROGRAMBINARYPROC)(GLuint program, GLsizei bufSize, GLsizei * length, GLenum * binaryFormat, void * binary);
 typedef void (GLAD_API_PTR *PFNGLGETPROGRAMINFOLOGPROC)(GLuint program, GLsizei bufSize, GLsizei * length, GLchar * infoLog);
 typedef void (GLAD_API_PTR *PFNGLGETPROGRAMIVPROC)(GLuint program, GLenum pname, GLint * params);
 typedef void (GLAD_API_PTR *PFNGLGETQUERYOBJECTI64VPROC)(GLuint id, GLenum pname, GLint64 * params);
@@ -2057,6 +2064,8 @@ typedef void (GLAD_API_PTR *PFNGLPOPMATRIXPROC)(void);
 typedef void (GLAD_API_PTR *PFNGLPOPNAMEPROC)(void);
 typedef void (GLAD_API_PTR *PFNGLPRIMITIVERESTARTINDEXPROC)(GLuint index);
 typedef void (GLAD_API_PTR *PFNGLPRIORITIZETEXTURESPROC)(GLsizei n, const GLuint * textures, const GLfloat * priorities);
+typedef void (GLAD_API_PTR *PFNGLPROGRAMBINARYPROC)(GLuint program, GLenum binaryFormat, const void * binary, GLsizei length);
+typedef void (GLAD_API_PTR *PFNGLPROGRAMPARAMETERIPROC)(GLuint program, GLenum pname, GLint value);
 typedef void (GLAD_API_PTR *PFNGLPROVOKINGVERTEXPROC)(GLenum mode);
 typedef void (GLAD_API_PTR *PFNGLPUSHATTRIBPROC)(GLbitfield mask);
 typedef void (GLAD_API_PTR *PFNGLPUSHCLIENTATTRIBPROC)(GLbitfield mask);
@@ -2860,6 +2869,8 @@ GLAD_API_CALL PFNGLGETPOINTERVPROC glad_glGetPointerv;
 #define glGetPointerv glad_glGetPointerv
 GLAD_API_CALL PFNGLGETPOLYGONSTIPPLEPROC glad_glGetPolygonStipple;
 #define glGetPolygonStipple glad_glGetPolygonStipple
+GLAD_API_CALL PFNGLGETPROGRAMBINARYPROC glad_glGetProgramBinary;
+#define glGetProgramBinary glad_glGetProgramBinary
 GLAD_API_CALL PFNGLGETPROGRAMINFOLOGPROC glad_glGetProgramInfoLog;
 #define glGetProgramInfoLog glad_glGetProgramInfoLog
 GLAD_API_CALL PFNGLGETPROGRAMIVPROC glad_glGetProgramiv;
@@ -3246,6 +3257,10 @@ GLAD_API_CALL PFNGLPRIMITIVERESTARTINDEXPROC glad_glPrimitiveRestartIndex;
 #define glPrimitiveRestartIndex glad_glPrimitiveRestartIndex
 GLAD_API_CALL PFNGLPRIORITIZETEXTURESPROC glad_glPrioritizeTextures;
 #define glPrioritizeTextures glad_glPrioritizeTextures
+GLAD_API_CALL PFNGLPROGRAMBINARYPROC glad_glProgramBinary;
+#define glProgramBinary glad_glProgramBinary
+GLAD_API_CALL PFNGLPROGRAMPARAMETERIPROC glad_glProgramParameteri;
+#define glProgramParameteri glad_glProgramParameteri
 GLAD_API_CALL PFNGLPROVOKINGVERTEXPROC glad_glProvokingVertex;
 #define glProvokingVertex glad_glProvokingVertex
 GLAD_API_CALL PFNGLPUSHATTRIBPROC glad_glPushAttrib;