/*-------------------------------------------------------------------------
* drawElements Quality Program OpenGL ES Utilities
* ------------------------------------------------
*
* Copyright 2014 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.
*
*//*!
* \file
* \brief Render context implementation that does no rendering.
*//*--------------------------------------------------------------------*/
#include "tcuNullRenderContext.hpp"
#include "tcuTexture.hpp"
#include "tcuTextureUtil.hpp"
#include "deThreadLocal.hpp"
#include "gluRenderConfig.hpp"
#include "gluTextureUtil.hpp"
#include "glwEnums.hpp"
#include <string>
#include <vector>
namespace tcu
{
namespace null
{
using std::string;
using std::vector;
using namespace glw;
using namespace glu;
class ObjectManager
{
public:
ObjectManager (void)
: m_lastObject(0)
{
}
deUint32 allocate (void)
{
deUint32 object = ++m_lastObject;
if (object == 0)
object = ++m_lastObject; // Just ignore overflow.
return object;
}
void free (deUint32 object)
{
DE_UNREF(object);
}
private:
deUint32 m_lastObject;
};
class Context
{
public:
Context (ContextType ctxType_);
~Context (void);
private:
Context (const Context&);
Context& operator= (const Context&);
void addExtension (const char* name);
public:
// GL state exposed to implementation functions.
const ContextType ctxType;
string vendor;
string version;
string renderer;
string shadingLanguageVersion;
string extensions;
vector<string> extensionList;
GLenum lastError;
int pixelPackRowLength;
int pixelPackSkipRows;
int pixelPackSkipPixels;
int pixelPackAlignment;
GLuint pixelPackBufferBufferBinding;
ObjectManager shaders;
ObjectManager programs;
ObjectManager textures;
ObjectManager buffers;
ObjectManager renderbuffers;
ObjectManager framebuffers;
ObjectManager samplers;
ObjectManager vertexArrays;
ObjectManager queries;
ObjectManager transformFeedbacks;
ObjectManager programPipelines;
};
Context::Context (ContextType ctxType_)
: ctxType (ctxType_)
, vendor ("drawElements")
, renderer ("dummy")
, lastError (GL_NO_ERROR)
, pixelPackRowLength (0)
, pixelPackSkipRows (0)
, pixelPackSkipPixels (0)
, pixelPackAlignment (0)
, pixelPackBufferBufferBinding (0)
{
using glu::ApiType;
if (ctxType.getAPI() == ApiType::es(2, 0))
{
version = "OpenGL ES 2.0";
shadingLanguageVersion = "OpenGL ES GLSL ES 1.0";
}
else if (ctxType.getAPI() == ApiType::es(3, 0))
{
version = "OpenGL ES 3.0";
shadingLanguageVersion = "OpenGL ES GLSL ES 3.0";
}
else if (ctxType.getAPI() == ApiType::es(3, 1))
{
version = "OpenGL ES 3.1";
shadingLanguageVersion = "OpenGL ES GLSL ES 3.1";
addExtension("GL_OES_texture_stencil8");
addExtension("GL_OES_sample_shading");
addExtension("GL_OES_sample_variables");
addExtension("GL_OES_shader_multisample_interpolation");
addExtension("GL_OES_shader_image_atomics");
addExtension("GL_OES_texture_storage_multisample_2d_array");
addExtension("GL_KHR_blend_equation_advanced");
addExtension("GL_KHR_blend_equation_advanced_coherent");
addExtension("GL_EXT_shader_io_blocks");
addExtension("GL_EXT_geometry_shader");
addExtension("GL_EXT_geometry_point_size");
addExtension("GL_EXT_tessellation_shader");
addExtension("GL_EXT_tessellation_point_size");
addExtension("GL_EXT_gpu_shader5");
}
else if (glu::isContextTypeGLCore(ctxType) && ctxType.getMajorVersion() == 3)
{
version = "3.3.0";
shadingLanguageVersion = "3.30";
}
else if (glu::isContextTypeGLCore(ctxType) && ctxType.getMajorVersion() == 4 && ctxType.getMinorVersion() <= 4)
{
version = "4.4.0";
shadingLanguageVersion = "4.40";
}
else
throw tcu::NotSupportedError("Unsupported GL version", "", __FILE__, __LINE__);
if (isContextTypeES(ctxType))
addExtension("GL_EXT_color_buffer_float");
}
Context::~Context (void)
{
}
void Context::addExtension (const char* name)
{
if (!extensions.empty())
extensions += " ";
extensions += name;
extensionList.push_back(name);
}
static de::ThreadLocal s_currentCtx;
void setCurrentContext (Context* context)
{
s_currentCtx.set((void*)context);
}
Context* getCurrentContext (void)
{
return (Context*)s_currentCtx.get();
}
GLW_APICALL GLenum GLW_APIENTRY glGetError (void)
{
Context* const ctx = getCurrentContext();
const GLenum lastErr = ctx->lastError;
ctx->lastError = GL_NO_ERROR;
return lastErr;
}
GLW_APICALL void GLW_APIENTRY glGetIntegerv (GLenum pname, GLint* params)
{
Context* const ctx = getCurrentContext();
switch (pname)
{
case GL_NUM_EXTENSIONS:
*params = (int)ctx->extensionList.size();
break;
case GL_MAX_VERTEX_ATTRIBS:
*params = 32;
break;
case GL_MAX_DRAW_BUFFERS:
case GL_MAX_COLOR_ATTACHMENTS:
*params = 8;
break;
case GL_MAX_TEXTURE_IMAGE_UNITS:
case GL_MAX_VERTEX_TEXTURE_IMAGE_UNITS:
case GL_MAX_COMBINED_TEXTURE_IMAGE_UNITS:
case GL_MAX_GEOMETRY_TEXTURE_IMAGE_UNITS:
case GL_MAX_TESS_EVALUATION_TEXTURE_IMAGE_UNITS:
case GL_MAX_TESS_CONTROL_TEXTURE_IMAGE_UNITS:
*params = 16;
break;
case GL_MAX_TEXTURE_SIZE:
case GL_MAX_CUBE_MAP_TEXTURE_SIZE:
case GL_MAX_3D_TEXTURE_SIZE:
case GL_MAX_RENDERBUFFER_SIZE:
*params = 2048;
break;
case GL_MAX_ARRAY_TEXTURE_LAYERS:
*params = 128;
break;
case GL_NUM_SHADER_BINARY_FORMATS:
*params = 0;
break;
case GL_NUM_COMPRESSED_TEXTURE_FORMATS:
*params = 0;
break;
case GL_MAX_TRANSFORM_FEEDBACK_SEPARATE_ATTRIBS:
*params = 16;
break;
case GL_MAX_UNIFORM_BUFFER_BINDINGS:
*params = 32;
break;
case GL_UNIFORM_BUFFER_OFFSET_ALIGNMENT:
*params = 16;
break;
case GL_IMPLEMENTATION_COLOR_READ_FORMAT:
*params = GL_RGBA;
break;
case GL_IMPLEMENTATION_COLOR_READ_TYPE:
*params = GL_UNSIGNED_BYTE;
break;
case GL_SAMPLE_BUFFERS:
*params = 0;
break;
default:
break;
}
}
GLW_APICALL void GLW_APIENTRY glGetBooleanv (GLenum pname, GLboolean* params)
{
switch (pname)
{
case GL_SHADER_COMPILER:
*params = GL_TRUE;
break;
default:
break;
}
}
GLW_APICALL void GLW_APIENTRY glGetFloatv (GLenum pname, GLfloat* params)
{
switch (pname)
{
case GL_ALIASED_LINE_WIDTH_RANGE:
case GL_ALIASED_POINT_SIZE_RANGE:
params[0] = 0.0f;
params[1] = 64.0f;
break;
default:
break;
}
}
GLW_APICALL const glw::GLubyte* GLW_APIENTRY glGetString (GLenum name)
{
Context* const ctx = getCurrentContext();
switch (name)
{
case GL_VENDOR: return (const glw::GLubyte*)ctx->vendor.c_str();
case GL_VERSION: return (const glw::GLubyte*)ctx->version.c_str();
case GL_RENDERER: return (const glw::GLubyte*)ctx->renderer.c_str();
case GL_SHADING_LANGUAGE_VERSION: return (const glw::GLubyte*)ctx->shadingLanguageVersion.c_str();
case GL_EXTENSIONS: return (const glw::GLubyte*)ctx->extensions.c_str();
default:
ctx->lastError = GL_INVALID_ENUM;
return DE_NULL;
}
}
GLW_APICALL const glw::GLubyte* GLW_APIENTRY glGetStringi (GLenum name, GLuint index)
{
Context* const ctx = getCurrentContext();
if (name == GL_EXTENSIONS)
{
if ((size_t)index < ctx->extensionList.size())
return (const glw::GLubyte*)ctx->extensionList[index].c_str();
else
{
ctx->lastError = GL_INVALID_VALUE;
return DE_NULL;
}
}
else
{
ctx->lastError = GL_INVALID_ENUM;
return DE_NULL;
}
}
GLW_APICALL GLuint GLW_APIENTRY glCreateProgram ()
{
Context* const ctx = getCurrentContext();
return (GLuint)ctx->programs.allocate();
}
GLW_APICALL GLuint GLW_APIENTRY glCreateShader (GLenum type)
{
Context* const ctx = getCurrentContext();
DE_UNREF(type);
return (GLuint)ctx->shaders.allocate();
}
GLW_APICALL void GLW_APIENTRY glGetShaderiv (GLuint shader, GLenum pname, GLint* params)
{
DE_UNREF(shader);
if (pname == GL_COMPILE_STATUS)
*params = GL_TRUE;
}
GLW_APICALL void GLW_APIENTRY glGetProgramiv (GLuint program, GLenum pname, GLint* params)
{
DE_UNREF(program);
if (pname == GL_LINK_STATUS)
*params = GL_TRUE;
}
GLW_APICALL void GLW_APIENTRY glGenTextures (GLsizei n, GLuint* textures)
{
Context* const ctx = getCurrentContext();
if (textures)
{
for (int ndx = 0; ndx < n; ndx++)
textures[ndx] = ctx->textures.allocate();
}
}
GLW_APICALL void GLW_APIENTRY glGenQueries (GLsizei n, GLuint* ids)
{
Context* const ctx = getCurrentContext();
if (ids)
{
for (int ndx = 0; ndx < n; ndx++)
ids[ndx] = ctx->queries.allocate();
}
}
GLW_APICALL void GLW_APIENTRY glGenBuffers (GLsizei n, GLuint* buffers)
{
Context* const ctx = getCurrentContext();
if (buffers)
{
for (int ndx = 0; ndx < n; ndx++)
buffers[ndx] = ctx->buffers.allocate();
}
}
GLW_APICALL void GLW_APIENTRY glGenRenderbuffers (GLsizei n, GLuint* renderbuffers)
{
Context* const ctx = getCurrentContext();
if (renderbuffers)
{
for (int ndx = 0; ndx < n; ndx++)
renderbuffers[ndx] = ctx->renderbuffers.allocate();
}
}
GLW_APICALL void GLW_APIENTRY glGenFramebuffers (GLsizei n, GLuint* framebuffers)
{
Context* const ctx = getCurrentContext();
if (framebuffers)
{
for (int ndx = 0; ndx < n; ndx++)
framebuffers[ndx] = ctx->framebuffers.allocate();
}
}
GLW_APICALL void GLW_APIENTRY glGenVertexArrays (GLsizei n, GLuint* arrays)
{
Context* const ctx = getCurrentContext();
if (arrays)
{
for (int ndx = 0; ndx < n; ndx++)
arrays[ndx] = ctx->vertexArrays.allocate();
}
}
GLW_APICALL void GLW_APIENTRY glGenSamplers (GLsizei count, GLuint* samplers)
{
Context* const ctx = getCurrentContext();
if (samplers)
{
for (int ndx = 0; ndx < count; ndx++)
samplers[ndx] = ctx->samplers.allocate();
}
}
GLW_APICALL void GLW_APIENTRY glGenTransformFeedbacks (GLsizei n, GLuint* ids)
{
Context* const ctx = getCurrentContext();
if (ids)
{
for (int ndx = 0; ndx < n; ndx++)
ids[ndx] = ctx->transformFeedbacks.allocate();
}
}
GLW_APICALL void GLW_APIENTRY glGenProgramPipelines (GLsizei n, GLuint* pipelines)
{
Context* const ctx = getCurrentContext();
if (pipelines)
{
for (int ndx = 0; ndx < n; ndx++)
pipelines[ndx] = ctx->programPipelines.allocate();
}
}
GLW_APICALL GLvoid* GLW_APIENTRY glMapBufferRange (GLenum target, GLintptr offset, GLsizeiptr length, GLbitfield access)
{
Context* const ctx = getCurrentContext();
DE_UNREF(target);
DE_UNREF(offset);
DE_UNREF(length);
DE_UNREF(access);
if (ctx->lastError == GL_NO_ERROR)
ctx->lastError = GL_INVALID_OPERATION;
return (GLvoid*)0;
}
GLW_APICALL GLenum GLW_APIENTRY glCheckFramebufferStatus (GLenum target)
{
DE_UNREF(target);
return GL_FRAMEBUFFER_COMPLETE;
}
GLW_APICALL void GLW_APIENTRY glReadPixels (GLint x, GLint y, GLsizei width, GLsizei height, GLenum format, GLenum type, GLvoid* pixels)
{
DE_UNREF(x);
DE_UNREF(y);
Context* const ctx = getCurrentContext();
const tcu::Vec4 clearColor (0.0f, 0.0f, 0.0f, 1.0f); // black
const tcu::TextureFormat transferFormat = glu::mapGLTransferFormat(format, type);
// invalid formats
if (transferFormat.order == TextureFormat::CHANNELORDER_LAST || transferFormat.type == TextureFormat::CHANNELTYPE_LAST)
{
if (ctx->lastError == GL_NO_ERROR)
ctx->lastError = GL_INVALID_ENUM;
return;
}
// unsupported formats
if (!(format == GL_RGBA && type == GL_UNSIGNED_BYTE) &&
!(format == GL_RGBA_INTEGER && type == GL_INT) &&
!(format == GL_RGBA_INTEGER && type == GL_UNSIGNED_INT) &&
!(format == GL_RGBA && type == GL_FLOAT))
{
if (ctx->lastError == GL_NO_ERROR)
ctx->lastError = GL_INVALID_ENUM;
return;
}
// invalid arguments
if (width < 0 || height < 0)
{
if (ctx->lastError == GL_NO_ERROR)
ctx->lastError = GL_INVALID_OPERATION;
return;
}
// read to buffer
if (ctx->pixelPackBufferBufferBinding)
return;
// read to use pointer
{
const int targetRowLength = (ctx->pixelPackRowLength != 0) ? (ctx->pixelPackRowLength) : (width);
const int targetSkipRows = ctx->pixelPackSkipRows;
const int targetSkipPixels = ctx->pixelPackSkipPixels;
const int infiniteHeight = targetSkipRows + height; // as much as needed
const int targetRowPitch = (ctx->pixelPackAlignment == 0) ? (targetRowLength * transferFormat.getPixelSize()) : (deAlign32(targetRowLength * transferFormat.getPixelSize(), ctx->pixelPackAlignment));
// Create access to the whole copy target
const tcu::PixelBufferAccess targetAccess (transferFormat, targetRowLength, infiniteHeight, 1, targetRowPitch, 0, pixels);
// Select (skip_pixels, skip_rows, width, height) subregion from it. Clip to horizontal boundaries
const tcu::PixelBufferAccess targetRectAccess = tcu::getSubregion(targetAccess,
de::clamp(targetSkipPixels, 0, targetAccess.getWidth()-1),
targetSkipRows,
de::clamp(width, 0, de::max(0, targetAccess.getWidth() - targetSkipPixels)),
height);
tcu::clear(targetRectAccess, clearColor);
}
}
GLW_APICALL void GLW_APIENTRY glBindBuffer (GLenum target, GLuint buffer)
{
Context* const ctx = getCurrentContext();
if (target == GL_PIXEL_PACK_BUFFER)
ctx->pixelPackBufferBufferBinding = buffer;
}
GLW_APICALL void GLW_APIENTRY glDeleteBuffers (GLsizei n, const GLuint* buffers)
{
Context* const ctx = getCurrentContext();
for (GLsizei ndx = 0; ndx < n; ++ndx)
if (buffers[ndx] && buffers[ndx] == ctx->pixelPackBufferBufferBinding)
ctx->pixelPackBufferBufferBinding = 0;
}
#include "tcuNullRenderContextFuncs.inl"
void initFunctions (glw::Functions* gl)
{
# include "tcuNullRenderContextInitFuncs.inl"
}
static tcu::RenderTarget toRenderTarget (const RenderConfig& renderCfg)
{
const int width = getValueOrDefault(renderCfg, &RenderConfig::width, 256);
const int height = getValueOrDefault(renderCfg, &RenderConfig::height, 256);
const int redBits = getValueOrDefault(renderCfg, &RenderConfig::redBits, 8);
const int greenBits = getValueOrDefault(renderCfg, &RenderConfig::greenBits, 8);
const int blueBits = getValueOrDefault(renderCfg, &RenderConfig::blueBits, 8);
const int alphaBits = getValueOrDefault(renderCfg, &RenderConfig::alphaBits, 8);
const int depthBits = getValueOrDefault(renderCfg, &RenderConfig::depthBits, 24);
const int stencilBits = getValueOrDefault(renderCfg, &RenderConfig::stencilBits, 8);
const int numSamples = getValueOrDefault(renderCfg, &RenderConfig::numSamples, 0);
return tcu::RenderTarget(width, height, tcu::PixelFormat(redBits, greenBits, blueBits, alphaBits), depthBits, stencilBits, numSamples);
}
RenderContext::RenderContext (const RenderConfig& renderCfg)
: m_ctxType (renderCfg.type)
, m_renderTarget (toRenderTarget(renderCfg))
, m_context (DE_NULL)
{
m_context = new Context(m_ctxType);
initFunctions(&m_functions);
setCurrentContext(m_context);
}
RenderContext::~RenderContext (void)
{
setCurrentContext(DE_NULL);
delete m_context;
}
void RenderContext::postIterate (void)
{
}
} // null
} // tcu