YaGL: hot fix web app broken issue on macOS.

A bug in emulator-yagl causes a shader compile error on macOS.
I make an emergency patch for this specific situation.

Note: If we can build a new platform(emulator-yagl with patch),
this commit can be reverted.

Change-Id: I706c4067af4d6721b8aa6c69832bce7580252ca3
Signed-off-by: Jinhyung Jo <jinhyung.jo@samsung.com>

3 files changed, 68 insertions, 0 deletions

diff --git a/hw/yagl/yagl_apis/gles/yagl_host_gles_calls.c b/hw/yagl/yagl_apis/gles/yagl_host_gles_calls.c
index af3efbd11d..66bd7a451f 100644
--- a/hw/yagl/yagl_apis/gles/yagl_host_gles_calls.c
+++ b/hw/yagl/yagl_apis/gles/yagl_host_gles_calls.c
@@ -1724,7 +1724,73 @@ void yagl_host_glDetachShader(GLuint program,
 
 void yagl_host_glCompileShader(GLuint shader)
 {
+#ifndef CONFIG_DARWIN
     gles_api_ts->driver->CompileShader(yagl_gles_object_get(shader));
+#else
+    GLint tmp = 0;
+
+    YAGL_LOG_FUNC_SET(glCompileShader);
+
+    gles_api_ts->driver->CompileShader(yagl_gles_object_get(shader));
+
+    gles_api_ts->driver->GetShaderiv(yagl_gles_object_get(shader), GL_COMPILE_STATUS, &tmp);
+    if (tmp == GL_FALSE) {
+        char *buff;
+        char *substring;
+        const char textue2d_err[] = "undeclared identifier 'texture2D'";
+        const char texture_lookup_define[] = "#define TextureLookup texture2D";
+
+        tmp = 0;
+        gles_api_ts->driver->GetShaderiv(yagl_gles_object_get(shader), GL_INFO_LOG_LENGTH, &tmp);
+        buff = g_malloc0(tmp);
+        gles_api_ts->driver->GetShaderInfoLog(yagl_gles_object_get(shader), tmp, NULL, buff);
+        if (gles_api_ts->driver->gl_version < yagl_gl_3_2 ||
+            strstr(buff, textue2d_err) == NULL) {
+            YAGL_LOG_ERROR("Unable to compile shader %s", buff);
+            g_free(buff);
+            return;
+        }
+        YAGL_LOG_DEBUG("Unable to compile shader %s", buff);
+        g_free(buff);
+
+        tmp = 0;
+        gles_api_ts->driver->GetShaderiv(yagl_gles_object_get(shader), GL_SHADER_SOURCE_LENGTH, &tmp);
+        buff = g_malloc0(tmp);
+        gles_api_ts->driver->GetShaderSource(yagl_gles_object_get(shader), tmp, NULL, buff);
+        YAGL_LOG_DEBUG("Shader Source: \n%s", buff);
+
+        substring = strstr(buff, texture_lookup_define);
+        if (substring) {
+            const GLchar *strings[1];
+            GLint lenghts[1];
+
+            /* texture2D -> texture\n\n */
+            substring[strlen(texture_lookup_define) - 1] = '\n';
+            substring[strlen(texture_lookup_define) - 2] = '\n';
+
+            strings[0] = buff;
+            lenghts[0] = tmp - 1;
+
+            gles_api_ts->driver->ShaderSource(yagl_gles_object_get(shader),
+                                              1,
+                                              strings,
+                                              lenghts);
+            gles_api_ts->driver->CompileShader(yagl_gles_object_get(shader));
+            gles_api_ts->driver->GetShaderiv(yagl_gles_object_get(shader), GL_COMPILE_STATUS, &tmp);
+            if (!tmp) {
+                YAGL_LOG_ERROR("Unable to compile the patched shader source: \n%s", buff);
+                g_free(buff);
+
+                tmp = 0;
+                gles_api_ts->driver->GetShaderiv(yagl_gles_object_get(shader), GL_INFO_LOG_LENGTH, &tmp);
+                buff = g_malloc0(tmp);
+                gles_api_ts->driver->GetShaderInfoLog(yagl_gles_object_get(shader), tmp, NULL, buff);
+                YAGL_LOG_ERROR("Cause of compilation failure: %s", buff);
+            }
+        }
+        g_free(buff);
+    }
+#endif
 }
 
 void yagl_host_glBindAttribLocation(GLuint program,
diff --git a/hw/yagl/yagl_drivers/gles_ogl/yagl_gles_ogl.c b/hw/yagl/yagl_drivers/gles_ogl/yagl_gles_ogl.c
index 15cff43eac..70e255834a 100644
--- a/hw/yagl/yagl_drivers/gles_ogl/yagl_gles_ogl.c
+++ b/hw/yagl/yagl_drivers/gles_ogl/yagl_gles_ogl.c
@@ -117,6 +117,7 @@ struct yagl_gles_driver *yagl_gles_ogl_create(struct yagl_dyn_lib *dyn_lib,
     YAGL_GLES_OGL_GET_PROC(driver, GetProgramInfoLog, glGetProgramInfoLog);
     YAGL_GLES_OGL_GET_PROC(driver, GetShaderiv, glGetShaderiv);
     YAGL_GLES_OGL_GET_PROC(driver, GetShaderInfoLog, glGetShaderInfoLog);
+    YAGL_GLES_OGL_GET_PROC(driver, GetShaderSource, glGetShaderSource);
     YAGL_GLES_OGL_GET_PROC(driver, GetUniformfv, glGetUniformfv);
     YAGL_GLES_OGL_GET_PROC(driver, GetUniformiv, glGetUniformiv);
     YAGL_GLES_OGL_GET_PROC(driver, GetUniformLocation, glGetUniformLocation);
diff --git a/hw/yagl/yagl_gles_driver.h b/hw/yagl/yagl_gles_driver.h
index 22eafbd62c..6e64f7a441 100644
--- a/hw/yagl/yagl_gles_driver.h
+++ b/hw/yagl/yagl_gles_driver.h
@@ -183,6 +183,7 @@ struct yagl_gles_driver
     YAGL_GLES_DRIVER_FUNC4(GetProgramInfoLog, GLuint, GLsizei, GLsizei*, GLchar*, program, bufsize, length, infolog)
     YAGL_GLES_DRIVER_FUNC3(GetShaderiv, GLuint, GLenum, GLint*, shader, pname, params)
     YAGL_GLES_DRIVER_FUNC4(GetShaderInfoLog, GLuint, GLsizei, GLsizei*, GLchar*, shader, bufsize, length, infolog)
+    YAGL_GLES_DRIVER_FUNC4(GetShaderSource, GLuint, GLsizei, GLsizei*, GLchar*, shader, bufsize, length, source)
     YAGL_GLES_DRIVER_FUNC3(GetUniformfv, GLuint, GLint, GLfloat*, program, location, params)
     YAGL_GLES_DRIVER_FUNC3(GetUniformiv, GLuint, GLint, GLint*, program, location, params)
     YAGL_GLES_DRIVER_FUNC_RET2(int, GetUniformLocation, GLuint, const GLchar*, program, name)