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/*
* 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 {
sk_sp<const GrGLInterface> NullGlesDriver::getSkiaInterface() {
sk_sp<const GrGLInterface> skiaInterface(GrGLCreateNullInterface());
return skiaInterface;
}
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
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