1 files changed, 165 insertions, 0 deletions
diff --git a/libs/hwui/debug/NullGlesDriver.cpp b/libs/hwui/debug/NullGlesDriver.cpp
new file mode 100644
index 000000000000..e9dbc7446f4e
--- /dev/null
+++ b/libs/hwui/debug/NullGlesDriver.cpp
@@ -0,0 +1,165 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <debug/NullGlesDriver.h>
+
+namespace android {
+namespace uirenderer {
+namespace debug {
+
+struct {
+    GLboolean scissorEnabled;
+} gState;
+
+static void nullglGenCommon(GLsizei n, GLuint *buffers) {
+    static GLuint nextId = 0;
+    int i;
+    for(i = 0; i < n; i++) {
+        buffers[i] = ++nextId;
+    }
+}
+
+void NullGlesDriver::glGenBuffers_(GLsizei n, GLuint *buffers) {
+    nullglGenCommon(n, buffers);
+}
+
+void NullGlesDriver::glGenFramebuffers_(GLsizei n, GLuint *framebuffers) {
+    nullglGenCommon(n, framebuffers);
+}
+
+void NullGlesDriver::glGenRenderbuffers_(GLsizei n, GLuint *renderbuffers) {
+    nullglGenCommon(n, renderbuffers);
+}
+
+void NullGlesDriver::glGenTextures_(GLsizei n, GLuint *textures) {
+    nullglGenCommon(n, textures);
+}
+
+GLuint NullGlesDriver::glCreateProgram_(void) {
+    static GLuint nextProgram = 0;
+    return ++nextProgram;
+}
+
+GLuint NullGlesDriver::glCreateShader_(GLenum type) {
+    static GLuint nextShader = 0;
+    return ++nextShader;
+}
+
+void NullGlesDriver::glGetProgramiv_(GLuint program, GLenum pname, GLint *params) {
+    switch (pname) {
+    case GL_DELETE_STATUS:
+    case GL_LINK_STATUS:
+    case GL_VALIDATE_STATUS:
+        *params = GL_TRUE;
+        break;
+    case GL_INFO_LOG_LENGTH:
+        *params = 16;
+        break;
+    }
+}
+
+void NullGlesDriver::glGetProgramInfoLog_(GLuint program, GLsizei bufSize, GLsizei *length, GLchar *infoLog) {
+    *length = snprintf(infoLog, bufSize, "success");
+    if (*length >= bufSize) {
+        *length = bufSize - 1;
+    }
+}
+
+void NullGlesDriver::glGetShaderiv_(GLuint shader, GLenum pname, GLint *params) {
+    switch (pname) {
+    case GL_COMPILE_STATUS:
+    case GL_DELETE_STATUS:
+        *params = GL_TRUE;
+    }
+}
+
+void NullGlesDriver::glGetShaderInfoLog_(GLuint shader, GLsizei bufSize, GLsizei *length, GLchar *infoLog) {
+    *length = snprintf(infoLog, bufSize, "success");
+    if (*length >= bufSize) {
+        *length = bufSize - 1;
+    }
+}
+
+void setBooleanState(GLenum cap, GLboolean value) {
+    switch (cap) {
+    case GL_SCISSOR_TEST:
+        gState.scissorEnabled = value;
+        break;
+    }
+}
+
+void NullGlesDriver::glEnable_(GLenum cap) {
+    setBooleanState(cap, GL_TRUE);
+}
+
+void NullGlesDriver::glDisable_(GLenum cap) {
+    setBooleanState(cap, GL_FALSE);
+}
+
+GLboolean NullGlesDriver::glIsEnabled_(GLenum cap) {
+    switch (cap) {
+    case GL_SCISSOR_TEST:
+        return gState.scissorEnabled;
+    default:
+        return GL_FALSE;
+    }
+}
+
+void NullGlesDriver::glGetIntegerv_(GLenum pname, GLint *data) {
+    switch (pname) {
+    case GL_MAX_TEXTURE_SIZE:
+        *data = 2048;
+        break;
+    case GL_MAX_COMBINED_TEXTURE_IMAGE_UNITS:
+        *data = 4;
+        break;
+    default:
+        *data = 0;
+    }
+}
+
+GLenum NullGlesDriver::glCheckFramebufferStatus_(GLenum target) {
+    switch (target) {
+    case GL_FRAMEBUFFER:
+        return GL_FRAMEBUFFER_COMPLETE;
+    default:
+        return 0; // error case
+    }
+}
+
+static const char* getString(GLenum name) {
+    switch (name) {
+    case GL_VENDOR:
+        return "android";
+    case GL_RENDERER:
+        return "null";
+    case GL_VERSION:
+        return "OpenGL ES 2.0 rev1";
+    case GL_SHADING_LANGUAGE_VERSION:
+        return "OpenGL ES GLSL ES 2.0 rev1";
+    case GL_EXTENSIONS:
+    default:
+        return "";
+    }
+}
+
+const GLubyte* NullGlesDriver::glGetString_(GLenum name) {
+    return (GLubyte*) getString(name);
+}
+
+} // namespace debug
+} // namespace uirenderer
+} // namespace android