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OpenSubdiv/opensubdiv/osd/glDrawRegistry.cpp
manuelk 3ae50d1c50 Amending Apache license language & file headers. 
New text:

     Copyright 2013 Pixar

     Licensed under the Apache License, Version 2.0 (the "Apache License")
     with the following modification; you may not use this file except in
     compliance with the Apache License and the following modification to it:
     Section 6. Trademarks. is deleted and replaced with:

     6. Trademarks. This License does not grant permission to use the trade
        names, trademarks, service marks, or product names of the Licensor
        and its affiliates, except as required to comply with Section 4(c) of
        the License and to reproduce the content of the NOTICE file.

     You may obtain a copy of the Apache License at

         http://www.apache.org/licenses/LICENSE-2.0

     Unless required by applicable law or agreed to in writing, software
     distributed under the Apache License with the above modification is
     distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
     KIND, either express or implied. See the Apache License for the specific
     language governing permissions and limitations under the Apache License.
2013-09-26 12:04:57 -07:00

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//
// Copyright 2013 Pixar
//
// Licensed under the Apache License, Version 2.0 (the "Apache License")
// with the following modification; you may not use this file except in
// compliance with the Apache License and the following modification to it:
// Section 6. Trademarks. is deleted and replaced with:
//
// 6. Trademarks. This License does not grant permission to use the trade
// names, trademarks, service marks, or product names of the Licensor
// and its affiliates, except as required to comply with Section 4(c) of
// the License and to reproduce the content of the NOTICE file.
//
// You may obtain a copy of the Apache License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the Apache License with the above modification is
// distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
// KIND, either express or implied. See the Apache License for the specific
// language governing permissions and limitations under the Apache License.
//
#include "../osd/glDrawRegistry.h"
#include "../osd/error.h"
#include "../osd/opengl.h"
#include <sstream>
namespace OpenSubdiv {
namespace OPENSUBDIV_VERSION {
OsdGLDrawConfig::~OsdGLDrawConfig()
{
glDeleteProgram(program);
}
#if defined(GL_ARB_tessellation_shader) || defined(GL_VERSION_4_0)
static const char *commonShaderSource =
#include "glslPatchCommon.inc"
;
static const char *bsplineShaderSource =
#include "glslPatchBSpline.inc"
;
static const char *gregoryShaderSource =
#include "glslPatchGregory.inc"
;
static const char *transitionShaderSource =
#include "glslPatchTransition.inc"
;
#endif
OsdGLDrawRegistryBase::~OsdGLDrawRegistryBase() {}
OsdGLDrawSourceConfig *
OsdGLDrawRegistryBase::_CreateDrawSourceConfig(OsdDrawContext::PatchDescriptor const & desc)
{
OsdGLDrawSourceConfig * sconfig = _NewDrawSourceConfig();
#if defined(GL_ARB_tessellation_shader) || defined(GL_VERSION_4_0)
sconfig->commonShader.source = commonShaderSource;
{
std::ostringstream ss;
ss << (int)desc.GetMaxValence();
sconfig->commonShader.AddDefine("OSD_MAX_VALENCE", ss.str());
ss.str("");
ss << (int)desc.GetNumElements();
sconfig->commonShader.AddDefine("OSD_NUM_ELEMENTS", ss.str());
}
if (desc.GetPattern() == FarPatchTables::NON_TRANSITION) {
switch (desc.GetType()) {
case FarPatchTables::QUADS:
case FarPatchTables::TRIANGLES:
// do nothing
break;
case FarPatchTables::REGULAR:
sconfig->vertexShader.source = bsplineShaderSource;
sconfig->vertexShader.version = "#version 410\n";
sconfig->vertexShader.AddDefine("OSD_PATCH_VERTEX_BSPLINE_SHADER");
sconfig->tessControlShader.source = bsplineShaderSource;
sconfig->tessControlShader.version = "#version 410\n";
sconfig->tessControlShader.AddDefine("OSD_PATCH_TESS_CONTROL_BSPLINE_SHADER");
sconfig->tessEvalShader.source = bsplineShaderSource;
sconfig->tessEvalShader.version = "#version 410\n";
sconfig->tessEvalShader.AddDefine("OSD_PATCH_TESS_EVAL_BSPLINE_SHADER");
break;
case FarPatchTables::BOUNDARY:
sconfig->vertexShader.source = bsplineShaderSource;
sconfig->vertexShader.version = "#version 410\n";
sconfig->vertexShader.AddDefine("OSD_PATCH_VERTEX_BSPLINE_SHADER");
sconfig->tessControlShader.source = bsplineShaderSource;
sconfig->tessControlShader.version = "#version 410\n";
sconfig->tessControlShader.AddDefine("OSD_PATCH_TESS_CONTROL_BSPLINE_SHADER");
sconfig->tessControlShader.AddDefine("OSD_PATCH_BOUNDARY");
sconfig->tessEvalShader.source = bsplineShaderSource;
sconfig->tessEvalShader.version = "#version 410\n";
sconfig->tessEvalShader.AddDefine("OSD_PATCH_TESS_EVAL_BSPLINE_SHADER");
break;
case FarPatchTables::CORNER:
sconfig->vertexShader.source = bsplineShaderSource;
sconfig->vertexShader.version = "#version 410\n";
sconfig->vertexShader.AddDefine("OSD_PATCH_VERTEX_BSPLINE_SHADER");
sconfig->tessControlShader.source = bsplineShaderSource;
sconfig->tessControlShader.version = "#version 410\n";
sconfig->tessControlShader.AddDefine("OSD_PATCH_TESS_CONTROL_BSPLINE_SHADER");
sconfig->tessControlShader.AddDefine("OSD_PATCH_CORNER");
sconfig->tessEvalShader.source = bsplineShaderSource;
sconfig->tessEvalShader.version = "#version 410\n";
sconfig->tessEvalShader.AddDefine("OSD_PATCH_TESS_EVAL_BSPLINE_SHADER");
break;
case FarPatchTables::GREGORY:
sconfig->vertexShader.source = gregoryShaderSource;
sconfig->vertexShader.version = "#version 410\n";
sconfig->vertexShader.AddDefine("OSD_PATCH_VERTEX_GREGORY_SHADER");
sconfig->tessControlShader.source = gregoryShaderSource;
sconfig->tessControlShader.version = "#version 410\n";
sconfig->tessControlShader.AddDefine("OSD_PATCH_TESS_CONTROL_GREGORY_SHADER");
sconfig->tessEvalShader.source = gregoryShaderSource;
sconfig->tessEvalShader.version = "#version 410\n";
sconfig->tessEvalShader.AddDefine("OSD_PATCH_TESS_EVAL_GREGORY_SHADER");
break;
case FarPatchTables::GREGORY_BOUNDARY:
sconfig->vertexShader.source = gregoryShaderSource;
sconfig->vertexShader.version = "#version 410\n";
sconfig->vertexShader.AddDefine("OSD_PATCH_VERTEX_GREGORY_SHADER");
sconfig->vertexShader.AddDefine("OSD_PATCH_GREGORY_BOUNDARY");
sconfig->tessControlShader.source = gregoryShaderSource;
sconfig->tessControlShader.version = "#version 410\n";
sconfig->tessControlShader.AddDefine("OSD_PATCH_TESS_CONTROL_GREGORY_SHADER");
sconfig->tessControlShader.AddDefine("OSD_PATCH_GREGORY_BOUNDARY");
sconfig->tessEvalShader.source = gregoryShaderSource;
sconfig->tessEvalShader.version = "#version 410\n";
sconfig->tessEvalShader.AddDefine("OSD_PATCH_TESS_EVAL_GREGORY_SHADER");
sconfig->tessEvalShader.AddDefine("OSD_PATCH_GREGORY_BOUNDARY");
break;
default:
// error
delete sconfig;
sconfig = NULL;
break;
}
} else { // pattern != NON_TRANSITION
sconfig->vertexShader.source = bsplineShaderSource;
sconfig->vertexShader.version = "#version 410\n";
sconfig->vertexShader.AddDefine("OSD_PATCH_VERTEX_BSPLINE_SHADER");
sconfig->tessControlShader.source =
std::string(transitionShaderSource) + bsplineShaderSource;
sconfig->tessControlShader.version = "#version 410\n";
sconfig->tessControlShader.AddDefine("OSD_PATCH_TESS_CONTROL_BSPLINE_SHADER");
sconfig->tessControlShader.AddDefine("OSD_PATCH_TRANSITION");
sconfig->tessEvalShader.source =
std::string(transitionShaderSource) + bsplineShaderSource;
sconfig->tessEvalShader.version = "#version 410\n";
sconfig->tessEvalShader.AddDefine("OSD_PATCH_TESS_EVAL_BSPLINE_SHADER");
sconfig->tessEvalShader.AddDefine("OSD_PATCH_TRANSITION");
int pattern = desc.GetPattern() - 1;
int rotation = desc.GetRotation();
int subpatch = desc.GetSubPatch();
std::ostringstream ss;
ss << "OSD_TRANSITION_PATTERN" << pattern << subpatch;
sconfig->tessControlShader.AddDefine(ss.str());
sconfig->tessEvalShader.AddDefine(ss.str());
ss.str("");
ss << rotation;
sconfig->tessControlShader.AddDefine("OSD_TRANSITION_ROTATE", ss.str());
sconfig->tessEvalShader.AddDefine("OSD_TRANSITION_ROTATE", ss.str());
if (desc.GetType() == FarPatchTables::BOUNDARY) {
sconfig->tessControlShader.AddDefine("OSD_PATCH_BOUNDARY");
} else if (desc.GetType() == FarPatchTables::CORNER) {
sconfig->tessControlShader.AddDefine("OSD_PATCH_CORNER");
}
}
#endif
return sconfig;
}
static GLuint
_CompileShader(
GLenum shaderType,
OpenSubdiv::OsdDrawShaderSource const & common,
OpenSubdiv::OsdDrawShaderSource const & source)
{
const char *sources[4];
std::stringstream definitions;
for (int i=0; i<(int)common.defines.size(); ++i) {
definitions << "#define "
<< common.defines[i].first << " "
<< common.defines[i].second << "\n";
}
for (int i=0; i<(int)source.defines.size(); ++i) {
definitions << "#define "
<< source.defines[i].first << " "
<< source.defines[i].second << "\n";
}
std::string defString = definitions.str();
sources[0] = source.version.c_str();
sources[1] = defString.c_str();
sources[2] = common.source.c_str();
sources[3] = source.source.c_str();
GLuint shader = glCreateShader(shaderType);
glShaderSource(shader, 4, sources, NULL);
glCompileShader(shader);
GLint status;
glGetShaderiv(shader, GL_COMPILE_STATUS, &status);
if( status == GL_FALSE ) {
GLint infoLogLength;
glGetShaderiv(shader, GL_INFO_LOG_LENGTH, &infoLogLength);
char * infoLog = new char[infoLogLength];
glGetShaderInfoLog(shader, infoLogLength, NULL, infoLog);
OsdError(OSD_GLSL_COMPILE_ERROR,
"Error compiling GLSL shader: %s\nDefines: \n%s\n",
infoLog, defString.c_str());
delete[] infoLog;
}
return shader;
}
OsdGLDrawConfig *
OsdGLDrawRegistryBase::_CreateDrawConfig(
OsdDrawContext::PatchDescriptor const & desc,
OsdGLDrawSourceConfig const * sconfig)
{
assert(sconfig);
OsdGLDrawConfig * config = _NewDrawConfig();
assert(config);
GLuint vertexShader =
sconfig->vertexShader.source.empty() ? 0 :
_CompileShader(GL_VERTEX_SHADER,
sconfig->commonShader, sconfig->vertexShader);
GLuint tessControlShader = 0;
GLuint tessEvalShader = 0;
#if defined(GL_ARB_tessellation_shader) || defined(GL_VERSION_4_0)
tessControlShader =
sconfig->tessControlShader.source.empty() ? 0 :
_CompileShader(GL_TESS_CONTROL_SHADER,
sconfig->commonShader, sconfig->tessControlShader);
tessEvalShader =
sconfig->tessEvalShader.source.empty() ? 0 :
_CompileShader(GL_TESS_EVALUATION_SHADER,
sconfig->commonShader, sconfig->tessEvalShader);
#endif
GLuint geometryShader = 0;
#if defined(GL_ARB_geometry_shader4) || defined(GL_VERSION_3_1)
geometryShader =
sconfig->geometryShader.source.empty() ? 0 :
_CompileShader(GL_GEOMETRY_SHADER,
sconfig->commonShader, sconfig->geometryShader);
#endif
GLuint fragmentShader =
sconfig->fragmentShader.source.empty() ? 0 :
_CompileShader(GL_FRAGMENT_SHADER,
sconfig->commonShader, sconfig->fragmentShader);
GLuint program = glCreateProgram();
if (vertexShader) glAttachShader(program, vertexShader);
if (tessControlShader) glAttachShader(program, tessControlShader);
if (tessEvalShader) glAttachShader(program, tessEvalShader);
if (geometryShader) glAttachShader(program, geometryShader);
if (fragmentShader) glAttachShader(program, fragmentShader);
glLinkProgram(program);
glDeleteShader(vertexShader);
glDeleteShader(tessControlShader);
glDeleteShader(tessEvalShader);
glDeleteShader(geometryShader);
glDeleteShader(fragmentShader);
GLint status;
glGetProgramiv(program, GL_LINK_STATUS, &status );
if( status == GL_FALSE ) {
GLint infoLogLength;
glGetProgramiv(program, GL_INFO_LOG_LENGTH, &infoLogLength);
char * infoLog = new char[infoLogLength];
glGetProgramInfoLog(program, infoLogLength, NULL, infoLog);
OsdError(OSD_GLSL_LINK_ERROR,
"Error linking GLSL program: %s\n", infoLog);
delete[] infoLog;
}
config->program = program;
config->primitiveIdBaseUniform =
glGetUniformLocation(program, "OsdPrimitiveIdBase");
config->gregoryQuadOffsetBaseUniform =
glGetUniformLocation(program, "OsdGregoryQuadOffsetBase");
return config;
}
} // end namespace OPENSUBDIV_VERSION
} // end namespace OpenSubdiv
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