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Torque3D/Engine/source/gfx/gl/gfxGLShader.cpp
AzaezelX 8c38448428 probe capture fixes 
review of per and post bake protocols showed that the CAPTURING shader macro was not being properly recompiled in. as opengl was not playing nice with a simple batch shader recompilation for all effected shaders, a full lightmanager restart is at time of writing required. once we have a proper globally cached scene structure stored off GPU side, we'll want to change  GFXShader::addGlobalMacro("CAPTURING", String("1")); on over to dirtying that value in the cached buffer via setting a shader global uniform
review of prefilter examples shows a fixed sample count of 1024 across multiple implementations, so we'll use the standard barring further research into where that number is comming from for a scalar approach
review of gl shaders shows a doubleup in compiled state testing, so slimmed that down and added additional debugging reports
2023-12-05 13:32:03 -06:00

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//-----------------------------------------------------------------------------
// Copyright (c) 2012 GarageGames, LLC
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to
// deal in the Software without restriction, including without limitation the
// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
// sell copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
// IN THE SOFTWARE.
//-----------------------------------------------------------------------------
#include "platform/platform.h"
#include "gfx/gl/gfxGLShader.h"
#include "gfx/gl/gfxGLVertexAttribLocation.h"
#include "gfx/gl/gfxGLDevice.h"
#include "core/frameAllocator.h"
#include "core/stream/fileStream.h"
#include "core/strings/stringFunctions.h"
#include "math/mPoint2.h"
#include "gfx/gfxStructs.h"
#include "console/console.h"
#define CHECK_AARG(pos, name) static StringTableEntry attr_##name = StringTable->insert(#name); if (argName == attr_##name) { glBindAttribLocation(mProgram, pos, attr_##name); continue; }
class GFXGLShaderConstHandle : public GFXShaderConstHandle
{
friend class GFXGLShader;
public:
GFXGLShaderConstHandle( GFXGLShader *shader );
GFXGLShaderConstHandle( GFXGLShader *shader, const GFXShaderConstDesc &desc, GLuint loc, S32 samplerNum );
virtual ~GFXGLShaderConstHandle();
void reinit( const GFXShaderConstDesc &desc, GLuint loc, S32 samplerNum );
const String& getName() const { return mDesc.name; }
GFXShaderConstType getType() const { return mDesc.constType; }
U32 getArraySize() const { return mDesc.arraySize; }
U32 getSize() const;
void setValid( bool valid ) { mValid = valid; }
/// @warning This will always return the value assigned when the shader was
/// initialized. If the value is later changed this method won't reflect that.
S32 getSamplerRegister() const { return mSamplerNum; }
GFXShaderConstDesc mDesc;
GFXGLShader* mShader;
GLuint mLocation;
U32 mOffset;
U32 mSize;
S32 mSamplerNum;
bool mInstancingConstant;
};
GFXGLShaderConstHandle::GFXGLShaderConstHandle( GFXGLShader *shader )
: mShader( shader ), mLocation(0), mOffset(0), mSize(0), mSamplerNum(-1), mInstancingConstant(false)
{
dMemset(&mDesc, 0, sizeof(mDesc));
mValid = false;
}
static U32 shaderConstTypeSize(GFXShaderConstType type)
{
switch(type)
{
case GFXSCT_Float:
case GFXSCT_Int:
case GFXSCT_Sampler:
case GFXSCT_SamplerCube:
case GFXSCT_SamplerCubeArray:
case GFXSCT_SamplerTextureArray:
return 4;
case GFXSCT_Float2:
case GFXSCT_Int2:
return 8;
case GFXSCT_Float3:
case GFXSCT_Int3:
return 12;
case GFXSCT_Float4:
case GFXSCT_Int4:
return 16;
case GFXSCT_Float2x2:
return 16;
case GFXSCT_Float3x3:
return 36;
case GFXSCT_Float4x3:
return 48;
case GFXSCT_Float4x4:
return 64;
default:
AssertFatal(false,"shaderConstTypeSize - Unrecognized constant type");
return 0;
}
}
GFXGLShaderConstHandle::GFXGLShaderConstHandle( GFXGLShader *shader, const GFXShaderConstDesc &desc, GLuint loc, S32 samplerNum )
: mShader(shader), mInstancingConstant(false)
{
reinit(desc, loc, samplerNum);
}
void GFXGLShaderConstHandle::reinit( const GFXShaderConstDesc& desc, GLuint loc, S32 samplerNum )
{
mDesc = desc;
mLocation = loc;
mSamplerNum = samplerNum;
mOffset = 0;
mInstancingConstant = false;
U32 elemSize = shaderConstTypeSize(mDesc.constType);
AssertFatal(elemSize, "GFXGLShaderConst::GFXGLShaderConst - elemSize is 0");
mSize = mDesc.arraySize * elemSize;
mValid = true;
}
U32 GFXGLShaderConstHandle::getSize() const
{
return mSize;
}
GFXGLShaderConstHandle::~GFXGLShaderConstHandle()
{
}
GFXGLShaderConstBuffer::GFXGLShaderConstBuffer(GFXGLShader* shader, U32 bufSize, U8* existingConstants)
{
mShader = shader;
mBuffer = new U8[bufSize];
mWasLost = true;
// Copy the existing constant buffer to preserve sampler numbers
/// @warning This preserves a lot more than sampler numbers, obviously. If there
/// is any code that assumes a new constant buffer will have everything set to
/// 0, it will break.
dMemcpy(mBuffer, existingConstants, bufSize);
}
GFXGLShaderConstBuffer::~GFXGLShaderConstBuffer()
{
delete[] mBuffer;
if ( mShader )
mShader->_unlinkBuffer( this );
}
template<typename ConstType>
void GFXGLShaderConstBuffer::internalSet(GFXShaderConstHandle* handle, const ConstType& param)
{
AssertFatal(handle, "GFXGLShaderConstBuffer::internalSet - Handle is NULL!" );
AssertFatal(handle->isValid(), "GFXGLShaderConstBuffer::internalSet - Handle is not valid!" );
AssertFatal(dynamic_cast<GFXGLShaderConstHandle*>(handle), "GFXGLShaderConstBuffer::set - Incorrect const buffer type");
GFXGLShaderConstHandle* _glHandle = static_cast<GFXGLShaderConstHandle*>(handle);
AssertFatal(mShader == _glHandle->mShader, "GFXGLShaderConstBuffer::set - Should only set handles which are owned by our shader");
U8 *buf = mBuffer + _glHandle->mOffset;
if(_glHandle->mInstancingConstant)
buf = mInstPtr + _glHandle->mOffset;
dMemcpy(buf, &param, sizeof(ConstType));
}
void GFXGLShaderConstBuffer::set(GFXShaderConstHandle* handle, const F32 fv)
{
internalSet(handle, fv);
}
void GFXGLShaderConstBuffer::set(GFXShaderConstHandle* handle, const Point2F& fv)
{
internalSet(handle, fv);
}
void GFXGLShaderConstBuffer::set(GFXShaderConstHandle* handle, const Point3F& fv)
{
internalSet(handle, fv);
}
void GFXGLShaderConstBuffer::set(GFXShaderConstHandle* handle, const Point4F& fv)
{
internalSet(handle, fv);
}
void GFXGLShaderConstBuffer::set(GFXShaderConstHandle* handle, const PlaneF& fv)
{
internalSet(handle, fv);
}
void GFXGLShaderConstBuffer::set(GFXShaderConstHandle* handle, const LinearColorF& fv)
{
internalSet(handle, fv);
}
void GFXGLShaderConstBuffer::set(GFXShaderConstHandle* handle, const S32 fv)
{
internalSet(handle, fv);
}
void GFXGLShaderConstBuffer::set(GFXShaderConstHandle* handle, const Point2I& fv)
{
internalSet(handle, fv);
}
void GFXGLShaderConstBuffer::set(GFXShaderConstHandle* handle, const Point3I& fv)
{
internalSet(handle, fv);
}
void GFXGLShaderConstBuffer::set(GFXShaderConstHandle* handle, const Point4I& fv)
{
internalSet(handle, fv);
}
template<typename ConstType>
void GFXGLShaderConstBuffer::internalSet(GFXShaderConstHandle* handle, const AlignedArray<ConstType>& fv)
{
AssertFatal(handle, "GFXGLShaderConstBuffer::internalSet - Handle is NULL!" );
AssertFatal(handle->isValid(), "GFXGLShaderConstBuffer::internalSet - Handle is not valid!" );
AssertFatal(dynamic_cast<GFXGLShaderConstHandle*>(handle), "GFXGLShaderConstBuffer::set - Incorrect const buffer type");
GFXGLShaderConstHandle* _glHandle = static_cast<GFXGLShaderConstHandle*>(handle);
AssertFatal(mShader == _glHandle->mShader, "GFXGLShaderConstBuffer::set - Should only set handles which are owned by our shader");
AssertFatal(!_glHandle->mInstancingConstant, "GFXGLShaderConstBuffer::set - Instancing not supported for array");
const U8* fvBuffer = static_cast<const U8*>(fv.getBuffer());
for(U32 i = 0; i < fv.size(); ++i)
{
dMemcpy(mBuffer + _glHandle->mOffset + i * sizeof(ConstType), fvBuffer, sizeof(ConstType));
fvBuffer += fv.getElementSize();
}
}
void GFXGLShaderConstBuffer::set(GFXShaderConstHandle* handle, const AlignedArray<F32>& fv)
{
internalSet(handle, fv);
}
void GFXGLShaderConstBuffer::set(GFXShaderConstHandle* handle, const AlignedArray<Point2F>& fv)
{
internalSet(handle, fv);
}
void GFXGLShaderConstBuffer::set(GFXShaderConstHandle* handle, const AlignedArray<Point3F>& fv)
{
internalSet(handle, fv);
}
void GFXGLShaderConstBuffer::set(GFXShaderConstHandle* handle, const AlignedArray<Point4F>& fv)
{
internalSet(handle, fv);
}
void GFXGLShaderConstBuffer::set(GFXShaderConstHandle* handle, const AlignedArray<S32>& fv)
{
internalSet(handle, fv);
}
void GFXGLShaderConstBuffer::set(GFXShaderConstHandle* handle, const AlignedArray<Point2I>& fv)
{
internalSet(handle, fv);
}
void GFXGLShaderConstBuffer::set(GFXShaderConstHandle* handle, const AlignedArray<Point3I>& fv)
{
internalSet(handle, fv);
}
void GFXGLShaderConstBuffer::set(GFXShaderConstHandle* handle, const AlignedArray<Point4I>& fv)
{
internalSet(handle, fv);
}
void GFXGLShaderConstBuffer::set(GFXShaderConstHandle* handle, const MatrixF& mat, const GFXShaderConstType matType)
{
AssertFatal(handle, "GFXGLShaderConstBuffer::set - Handle is NULL!" );
AssertFatal(handle->isValid(), "GFXGLShaderConstBuffer::set - Handle is not valid!" );
AssertFatal(dynamic_cast<GFXGLShaderConstHandle*>(handle), "GFXGLShaderConstBuffer::set - Incorrect const buffer type");
GFXGLShaderConstHandle* _glHandle = static_cast<GFXGLShaderConstHandle*>(handle);
AssertFatal(mShader == _glHandle->mShader, "GFXGLShaderConstBuffer::set - Should only set handles which are owned by our shader");
AssertFatal(!_glHandle->mInstancingConstant || matType == GFXSCT_Float4x4, "GFXGLShaderConstBuffer::set - Only support GFXSCT_Float4x4 for instancing");
switch(matType)
{
case GFXSCT_Float2x2:
reinterpret_cast<F32*>(mBuffer + _glHandle->mOffset)[0] = mat[0];
reinterpret_cast<F32*>(mBuffer + _glHandle->mOffset)[1] = mat[1];
reinterpret_cast<F32*>(mBuffer + _glHandle->mOffset)[2] = mat[4];
reinterpret_cast<F32*>(mBuffer + _glHandle->mOffset)[3] = mat[5];
break;
case GFXSCT_Float3x3:
reinterpret_cast<F32*>(mBuffer + _glHandle->mOffset)[0] = mat[0];
reinterpret_cast<F32*>(mBuffer + _glHandle->mOffset)[1] = mat[1];
reinterpret_cast<F32*>(mBuffer + _glHandle->mOffset)[2] = mat[2];
reinterpret_cast<F32*>(mBuffer + _glHandle->mOffset)[3] = mat[4];
reinterpret_cast<F32*>(mBuffer + _glHandle->mOffset)[4] = mat[5];
reinterpret_cast<F32*>(mBuffer + _glHandle->mOffset)[5] = mat[6];
reinterpret_cast<F32*>(mBuffer + _glHandle->mOffset)[6] = mat[8];
reinterpret_cast<F32*>(mBuffer + _glHandle->mOffset)[7] = mat[9];
reinterpret_cast<F32*>(mBuffer + _glHandle->mOffset)[8] = mat[10];
break;
case GFXSCT_Float4x3:
dMemcpy(mBuffer + _glHandle->mOffset, (const F32*)mat, (sizeof(F32) * 12));// matrix with end row chopped off
break;
case GFXSCT_Float4x4:
{
if(_glHandle->mInstancingConstant)
{
MatrixF transposed;
mat.transposeTo(transposed);
dMemcpy( mInstPtr + _glHandle->mOffset, (const F32*)transposed, sizeof(MatrixF) );
return;
}
dMemcpy(mBuffer + _glHandle->mOffset, (const F32*)mat, sizeof(MatrixF));
break;
}
default:
AssertFatal(false, "GFXGLShaderConstBuffer::set - Invalid matrix type");
break;
}
}
void GFXGLShaderConstBuffer::set(GFXShaderConstHandle* handle, const MatrixF* mat, const U32 arraySize, const GFXShaderConstType matrixType)
{
AssertFatal(handle, "GFXGLShaderConstBuffer::set - Handle is NULL!" );
AssertFatal(handle->isValid(), "GFXGLShaderConstBuffer::set - Handle is not valid!" );
GFXGLShaderConstHandle* _glHandle = static_cast<GFXGLShaderConstHandle*>(handle);
AssertFatal(mShader == _glHandle->mShader, "GFXGLShaderConstBuffer::set - Should only set handles which are owned by our shader");
AssertFatal(!_glHandle->mInstancingConstant, "GFXGLShaderConstBuffer::set - Instancing not supported for matrix arrays");
switch (matrixType) {
case GFXSCT_Float4x3:
// Copy each item with the last row chopped off
for (int i = 0; i<arraySize; i++)
{
dMemcpy(mBuffer + _glHandle->mOffset + (i*(sizeof(F32) * 12)), (F32*)(mat + i), sizeof(F32) * 12);
}
break;
case GFXSCT_Float4x4:
dMemcpy(mBuffer + _glHandle->mOffset, (F32*)mat, _glHandle->getSize());
break;
default:
AssertFatal(false, "GFXGLShaderConstBuffer::set - setting array of non 4x4 matrices!");
break;
}
}
void GFXGLShaderConstBuffer::activate()
{
PROFILE_SCOPE(GFXGLShaderConstBuffer_activate);
mShader->setConstantsFromBuffer(this);
mWasLost = false;
}
const String GFXGLShaderConstBuffer::describeSelf() const
{
return String();
}
void GFXGLShaderConstBuffer::onShaderReload( GFXGLShader *shader )
{
AssertFatal( shader == mShader, "GFXGLShaderConstBuffer::onShaderReload, mismatched shaders!" );
delete[] mBuffer;
mBuffer = new U8[mShader->mConstBufferSize];
dMemset(mBuffer, 0, mShader->mConstBufferSize);
mWasLost = true;
}
GFXGLShader::GFXGLShader(GFXGLDevice* device) :
mVertexShader(0),
mPixelShader(0),
mProgram(0),
mDevice(device),
mConstBufferSize(0),
mConstBuffer(NULL)
{
}
GFXGLShader::~GFXGLShader()
{
clearShaders();
for(HandleMap::Iterator i = mHandles.begin(); i != mHandles.end(); i++)
delete i->value;
delete[] mConstBuffer;
}
void GFXGLShader::clearShaders()
{
glDeleteProgram(mProgram);
glDeleteShader(mVertexShader);
glDeleteShader(mPixelShader);
mProgram = 0;
mVertexShader = 0;
mPixelShader = 0;
}
bool GFXGLShader::_init()
{
PROFILE_SCOPE(GFXGLShader_Init);
// Don't initialize empty shaders.
if ( mVertexFile.isEmpty() && mPixelFile.isEmpty() )
return false;
clearShaders();
mProgram = glCreateProgram();
// Set the macros and add the global ones.
Vector<GFXShaderMacro> macros;
macros.merge( mMacros );
macros.merge( smGlobalMacros );
macros.increment();
macros.last().name = "TORQUE_SM";
macros.last().value = 40;
macros.increment();
macros.last().name = "TORQUE_VERTEX_SHADER";
macros.last().value = "";
// Default to true so we're "successful" if a vertex/pixel shader wasn't specified.
bool compiledVertexShader = true;
bool compiledPixelShader = true;
// Compile the vertex and pixel shaders if specified.
if(!mVertexFile.isEmpty())
compiledVertexShader = initShader(mVertexFile, true, macros);
macros.last().name = "TORQUE_PIXEL_SHADER";
if(!mPixelFile.isEmpty())
compiledPixelShader = initShader(mPixelFile, false, macros);
// If either shader was present and failed to compile, bail.
if(!compiledVertexShader || !compiledPixelShader)
return false;
// Link it!
glLinkProgram( mProgram );
GLint activeAttribs = 0;
glGetProgramiv(mProgram, GL_ACTIVE_ATTRIBUTES, &activeAttribs );
GLint maxLength;
glGetProgramiv(mProgram, GL_ACTIVE_ATTRIBUTE_MAX_LENGTH, &maxLength);
FrameTemp<GLchar> tempData(maxLength+1);
*tempData.address() = '\0';
// Check atributes
for (U32 i=0; i<activeAttribs; i++)
{
GLint size;
GLenum type;
glGetActiveAttrib(mProgram, i, maxLength + 1, NULL, &size, &type, tempData.address());
StringTableEntry argName = StringTable->insert(tempData.address());
CHECK_AARG(Torque::GL_VertexAttrib_Position, vPosition);
CHECK_AARG(Torque::GL_VertexAttrib_Normal, vNormal);
CHECK_AARG(Torque::GL_VertexAttrib_Color, vColor);
CHECK_AARG(Torque::GL_VertexAttrib_Tangent, vTangent);
CHECK_AARG(Torque::GL_VertexAttrib_TangentW, vTangentW);
CHECK_AARG(Torque::GL_VertexAttrib_Binormal, vBinormal);
CHECK_AARG(Torque::GL_VertexAttrib_TexCoord0, vTexCoord0);
CHECK_AARG(Torque::GL_VertexAttrib_TexCoord1, vTexCoord1);
CHECK_AARG(Torque::GL_VertexAttrib_TexCoord2, vTexCoord2);
CHECK_AARG(Torque::GL_VertexAttrib_TexCoord3, vTexCoord3);
CHECK_AARG(Torque::GL_VertexAttrib_TexCoord4, vTexCoord4);
CHECK_AARG(Torque::GL_VertexAttrib_TexCoord5, vTexCoord5);
CHECK_AARG(Torque::GL_VertexAttrib_TexCoord6, vTexCoord6);
CHECK_AARG(Torque::GL_VertexAttrib_TexCoord7, vTexCoord7);
CHECK_AARG(Torque::GL_VertexAttrib_TexCoord8, vTexCoord8);
CHECK_AARG(Torque::GL_VertexAttrib_TexCoord9, vTexCoord9);
}
//always have OUT_col
glBindFragDataLocation(mProgram, 0, "OUT_col");
// Check OUT_colN
for(U32 i=1;i<4;i++)
{
char buffer[10];
dSprintf(buffer, sizeof(buffer), "OUT_col%u",i);
GLint location = glGetFragDataLocation(mProgram, buffer);
if(location>0)
glBindFragDataLocation(mProgram, i, buffer);
}
// Link it again!
glLinkProgram( mProgram );
GLint linkStatus;
glGetProgramiv( mProgram, GL_LINK_STATUS, &linkStatus );
// Dump the info log to the console
U32 logLength = 0;
glGetProgramiv(mProgram, GL_INFO_LOG_LENGTH, (GLint*)&logLength);
if ( logLength )
{
FrameAllocatorMarker fam;
char* log = (char*)fam.alloc( logLength );
glGetProgramInfoLog( mProgram, logLength, NULL, log );
if ( linkStatus == GL_FALSE )
{
if ( smLogErrors )
{
Con::errorf( "GFXGLShader::init - Error linking shader!" );
Con::errorf( "Program %s / %s: %s",
mVertexFile.getFullPath().c_str(), mPixelFile.getFullPath().c_str(), log);
}
}
else if ( smLogWarnings )
{
Con::warnf( "Program %s / %s: %s",
mVertexFile.getFullPath().c_str(), mPixelFile.getFullPath().c_str(), log);
}
}
// If we failed to link, bail.
if ( linkStatus == GL_FALSE )
return false;
initConstantDescs();
initHandles();
// Notify Buffers we might have changed in size.
// If this was our first init then we won't have any activeBuffers
// to worry about unnecessarily calling.
Vector<GFXShaderConstBuffer*>::iterator biter = mActiveBuffers.begin();
for ( ; biter != mActiveBuffers.end(); biter++ )
((GFXGLShaderConstBuffer*)(*biter))->onShaderReload( this );
return true;
}
void GFXGLShader::initConstantDescs()
{
mConstants.clear();
GLint numUniforms;
glGetProgramiv(mProgram, GL_ACTIVE_UNIFORMS, &numUniforms);
GLint maxNameLength;
glGetProgramiv(mProgram, GL_ACTIVE_UNIFORM_MAX_LENGTH, &maxNameLength);
if(!maxNameLength)
return;
maxNameLength++;
FrameTemp<GLchar> uniformName(maxNameLength);
for(U32 i = 0; i < numUniforms; i++)
{
GLint size;
GLenum type;
glGetActiveUniform(mProgram, i, maxNameLength, NULL, &size, &type, uniformName);
GFXShaderConstDesc desc;
desc.name = String((char*)uniformName);
// Remove array brackets from the name
desc.name = desc.name.substr(0, desc.name.find('['));
// Insert $ to match D3D behavior of having a $ prepended to parameters to main.
desc.name.insert(0, '$');
desc.arraySize = size;
switch(type)
{
case GL_FLOAT:
desc.constType = GFXSCT_Float;
break;
case GL_FLOAT_VEC2:
desc.constType = GFXSCT_Float2;
break;
case GL_FLOAT_VEC3:
desc.constType = GFXSCT_Float3;
break;
case GL_FLOAT_VEC4:
desc.constType = GFXSCT_Float4;
break;
case GL_INT:
desc.constType = GFXSCT_Int;
break;
case GL_INT_VEC2:
desc.constType = GFXSCT_Int2;
break;
case GL_INT_VEC3:
desc.constType = GFXSCT_Int3;
break;
case GL_INT_VEC4:
desc.constType = GFXSCT_Int4;
break;
case GL_FLOAT_MAT2:
desc.constType = GFXSCT_Float2x2;
break;
case GL_FLOAT_MAT3:
desc.constType = GFXSCT_Float3x3;
break;
case GL_FLOAT_MAT4:
desc.constType = GFXSCT_Float4x4;
break;
case GL_FLOAT_MAT4x3: // jamesu - columns, rows
desc.constType = GFXSCT_Float4x3;
break;
case GL_SAMPLER_1D:
case GL_SAMPLER_2D:
case GL_SAMPLER_3D:
case GL_SAMPLER_1D_SHADOW:
case GL_SAMPLER_2D_SHADOW:
desc.constType = GFXSCT_Sampler;
break;
case GL_SAMPLER_CUBE:
desc.constType = GFXSCT_SamplerCube;
break;
case GL_SAMPLER_CUBE_MAP_ARRAY_ARB:
desc.constType = GFXSCT_SamplerCubeArray;
break;
case GL_SAMPLER_2D_ARRAY:
desc.constType = GFXSCT_SamplerTextureArray;
break;
default:
AssertFatal(false, "GFXGLShader::initConstantDescs - unrecognized uniform type");
// If we don't recognize the constant don't add its description.
continue;
}
mConstants.push_back(desc);
}
}
void GFXGLShader::initHandles()
{
// Mark all existing handles as invalid.
// Those that are found when parsing the descriptions will then be marked valid again.
for ( HandleMap::Iterator iter = mHandles.begin(); iter != mHandles.end(); ++iter )
(iter->value)->setValid( false );
mValidHandles.clear();
// Loop through all ConstantDescriptions,
// if they aren't in the HandleMap add them, if they are reinitialize them.
for ( U32 i = 0; i < mConstants.size(); i++ )
{
GFXShaderConstDesc &desc = mConstants[i];
// Index element 1 of the name to skip the '$' we inserted earier.
GLint loc = glGetUniformLocation(mProgram, &desc.name.c_str()[1]);
AssertFatal(loc != -1, avar("uniform %s in shader file Vert: (%s) Frag: (%s)", &desc.name.c_str()[1], mVertexFile.getFullPath().c_str(), mPixelFile.getFullPath().c_str()));
HandleMap::Iterator handle = mHandles.find(desc.name);
S32 sampler = -1;
if(desc.constType == GFXSCT_Sampler ||
desc.constType == GFXSCT_SamplerCube ||
desc.constType == GFXSCT_SamplerCubeArray ||
desc.constType == GFXSCT_SamplerTextureArray)
{
S32 idx = mSamplerNamesOrdered.find_next(desc.name);
AssertFatal(idx != -1, "");
sampler = idx; //assignedSamplerNum++;
}
if ( handle != mHandles.end() )
{
handle->value->reinit( desc, loc, sampler );
}
else
{
mHandles[desc.name] = new GFXGLShaderConstHandle( this, desc, loc, sampler );
}
}
// Loop through handles once more to set their offset and calculate our
// constBuffer size.
if ( mConstBuffer )
delete[] mConstBuffer;
mConstBufferSize = 0;
for ( HandleMap::Iterator iter = mHandles.begin(); iter != mHandles.end(); ++iter )
{
GFXGLShaderConstHandle* handle = iter->value;
if ( handle->isValid() )
{
mValidHandles.push_back(handle);
handle->mOffset = mConstBufferSize;
mConstBufferSize += handle->getSize();
}
}
mConstBuffer = new U8[mConstBufferSize];
dMemset(mConstBuffer, 0, mConstBufferSize);
// Set our program so uniforms are assigned properly.
mDevice->setShader(this, false);
// Iterate through uniforms to set sampler numbers.
for (HandleMap::Iterator iter = mHandles.begin(); iter != mHandles.end(); ++iter)
{
GFXGLShaderConstHandle* handle = iter->value;
if(handle->isValid() &&
(handle->getType() == GFXSCT_Sampler ||
handle->getType() == GFXSCT_SamplerCube ||
handle->getType() == GFXSCT_SamplerCubeArray ||
handle->getType() == GFXSCT_SamplerTextureArray))
{
// Set sampler number on our program.
glUniform1i(handle->mLocation, handle->mSamplerNum);
// Set sampler in constant buffer so it does not get unset later.
dMemcpy(mConstBuffer + handle->mOffset, &handle->mSamplerNum, handle->getSize());
}
}
//instancing
if (!mInstancingFormat)
return;
U32 offset = 0;
for ( U32 i=0; i < mInstancingFormat->getElementCount(); i++ )
{
const GFXVertexElement &element = mInstancingFormat->getElement( i );
String constName = String::ToString( "$%s", element.getSemantic().c_str() );
HandleMap::Iterator handle = mHandles.find(constName);
if ( handle != mHandles.end() )
{
AssertFatal(0, "");
}
else
{
GFXShaderConstDesc desc;
desc.name = constName;
desc.arraySize = 1;
switch(element.getType())
{
case GFXDeclType_Float4:
desc.constType = GFXSCT_Float4;
break;
default:
desc.constType = GFXSCT_Float;
break;
}
GFXGLShaderConstHandle *h = new GFXGLShaderConstHandle( this, desc, -1, -1 );
h->mInstancingConstant = true;
h->mOffset = offset;
mHandles[constName] = h;
offset += element.getSizeInBytes();
++i;
// If this is a matrix we will have 2 or 3 more of these
// semantics with the same name after it.
for ( ; i < mInstancingFormat->getElementCount(); i++ )
{
const GFXVertexElement &nextElement = mInstancingFormat->getElement( i );
if ( nextElement.getSemantic() != element.getSemantic() )
{
i--;
break;
}
++desc.arraySize;
if(desc.arraySize == 4 && desc.constType == GFXSCT_Float4)
{
desc.arraySize = 1;
desc.constType = GFXSCT_Float4x4;
}
offset += nextElement.getSizeInBytes();
}
}
}
}
GFXShaderConstHandle* GFXGLShader::getShaderConstHandle(const String& name)
{
HandleMap::Iterator i = mHandles.find(name);
if(i != mHandles.end())
return i->value;
else
{
GFXGLShaderConstHandle* handle = new GFXGLShaderConstHandle( this );
mHandles[ name ] = handle;
return handle;
}
}
GFXShaderConstHandle* GFXGLShader::findShaderConstHandle(const String& name)
{
HandleMap::Iterator i = mHandles.find(name);
if(i != mHandles.end())
return i->value;
else
{
return NULL;
}
}
void GFXGLShader::setConstantsFromBuffer(GFXGLShaderConstBuffer* buffer)
{
for(Vector<GFXGLShaderConstHandle*>::iterator i = mValidHandles.begin(); i != mValidHandles.end(); ++i)
{
GFXGLShaderConstHandle* handle = *i;
AssertFatal(handle, "GFXGLShader::setConstantsFromBuffer - Null handle");
if(handle->mInstancingConstant)
continue;
// Don't set if the value has not be changed.
if(dMemcmp(mConstBuffer + handle->mOffset, buffer->mBuffer + handle->mOffset, handle->getSize()) == 0)
continue;
// Copy new value into our const buffer and set in GL.
dMemcpy(mConstBuffer + handle->mOffset, buffer->mBuffer + handle->mOffset, handle->getSize());
switch(handle->mDesc.constType)
{
case GFXSCT_Float:
glUniform1fv(handle->mLocation, handle->mDesc.arraySize, (GLfloat*)(mConstBuffer + handle->mOffset));
break;
case GFXSCT_Float2:
glUniform2fv(handle->mLocation, handle->mDesc.arraySize, (GLfloat*)(mConstBuffer + handle->mOffset));
break;
case GFXSCT_Float3:
glUniform3fv(handle->mLocation, handle->mDesc.arraySize, (GLfloat*)(mConstBuffer + handle->mOffset));
break;
case GFXSCT_Float4:
glUniform4fv(handle->mLocation, handle->mDesc.arraySize, (GLfloat*)(mConstBuffer + handle->mOffset));
break;
case GFXSCT_Int:
case GFXSCT_Sampler:
case GFXSCT_SamplerCube:
case GFXSCT_SamplerCubeArray:
case GFXSCT_SamplerTextureArray:
glUniform1iv(handle->mLocation, handle->mDesc.arraySize, (GLint*)(mConstBuffer + handle->mOffset));
break;
case GFXSCT_Int2:
glUniform2iv(handle->mLocation, handle->mDesc.arraySize, (GLint*)(mConstBuffer + handle->mOffset));
break;
case GFXSCT_Int3:
glUniform3iv(handle->mLocation, handle->mDesc.arraySize, (GLint*)(mConstBuffer + handle->mOffset));
break;
case GFXSCT_Int4:
glUniform4iv(handle->mLocation, handle->mDesc.arraySize, (GLint*)(mConstBuffer + handle->mOffset));
break;
case GFXSCT_Float2x2:
glUniformMatrix2fv(handle->mLocation, handle->mDesc.arraySize, true, (GLfloat*)(mConstBuffer + handle->mOffset));
break;
case GFXSCT_Float3x3:
glUniformMatrix3fv(handle->mLocation, handle->mDesc.arraySize, true, (GLfloat*)(mConstBuffer + handle->mOffset));
break;
case GFXSCT_Float4x3:
// NOTE: To save a transpose here we could store the matrix transposed (i.e. column major) in the constant buffer.
// See _mesa_uniform_matrix in the mesa source for the correct transpose algorithm for a 4x3 matrix.
glUniformMatrix4x3fv(handle->mLocation, handle->mDesc.arraySize, true, (GLfloat*)(mConstBuffer + handle->mOffset));
break;
case GFXSCT_Float4x4:
glUniformMatrix4fv(handle->mLocation, handle->mDesc.arraySize, true, (GLfloat*)(mConstBuffer + handle->mOffset));
break;
default:
AssertFatal(0,"");
break;
}
}
}
GFXShaderConstBufferRef GFXGLShader::allocConstBuffer()
{
GFXGLShaderConstBuffer* buffer = new GFXGLShaderConstBuffer(this, mConstBufferSize, mConstBuffer);
buffer->registerResourceWithDevice(getOwningDevice());
mActiveBuffers.push_back( buffer );
return buffer;
}
void GFXGLShader::useProgram()
{
glUseProgram(mProgram);
}
void GFXGLShader::zombify()
{
clearShaders();
dMemset(mConstBuffer, 0, mConstBufferSize);
}
char* GFXGLShader::_handleIncludes( const Torque::Path& path, FileStream *s )
{
// TODO: The #line pragma on GLSL takes something called a
// "source-string-number" which it then never explains.
//
// Until i resolve this mystery i disabled this.
//
//String linePragma = String::ToString( "#line 1 \r\n");
//U32 linePragmaLen = linePragma.length();
U32 shaderLen = s->getStreamSize();
char* buffer = (char*)dMalloc(shaderLen + 1);
//dStrncpy( buffer, linePragma.c_str(), linePragmaLen );
s->read(shaderLen, buffer);
buffer[shaderLen] = 0;
char* p = dStrstr(buffer, "#include");
while(p)
{
char* q = p;
p += 8;
if(dIsspace(*p))
{
U32 n = 0;
while(dIsspace(*p)) ++p;
AssertFatal(*p == '"', "Bad #include directive");
++p;
static char includeFile[256];
while(*p != '"')
{
AssertFatal(*p != 0, "Bad #include directive");
includeFile[n++] = *p++;
AssertFatal(n < sizeof(includeFile), "#include directive too long");
}
++p;
includeFile[n] = 0;
// First try it as a local file.
Torque::Path includePath = Torque::Path::Join(path.getPath(), '/', includeFile);
includePath = Torque::Path::CompressPath(includePath);
FileStream includeStream;
if ( !includeStream.open( includePath, Torque::FS::File::Read ) )
{
// Try again assuming the path is absolute
// and/or relative.
includePath = String( includeFile );
includePath = Torque::Path::CompressPath(includePath);
if ( !includeStream.open( includePath, Torque::FS::File::Read ) )
{
AssertISV(false, avar("failed to open include '%s'.", includePath.getFullPath().c_str()));
if ( smLogErrors )
Con::errorf( "GFXGLShader::_handleIncludes - Failed to open include '%s'.",
includePath.getFullPath().c_str() );
// Fail... don't return the buffer.
dFree(buffer);
return NULL;
}
}
char* includedText = _handleIncludes(includePath, &includeStream);
// If a sub-include fails... cleanup and return.
if ( !includedText )
{
dFree(buffer);
return NULL;
}
// TODO: Disabled till this is fixed correctly.
//
// Count the number of lines in the file
// before the include.
/*
U32 includeLine = 0;
{
char* nl = dStrstr( buffer, "\n" );
while ( nl )
{
includeLine++;
nl = dStrstr( nl, "\n" );
if(nl) ++nl;
}
}
*/
String manip(buffer);
manip.erase(q-buffer, p-q);
String sItx(includedText);
// TODO: Disabled till this is fixed correctly.
//
// Add a new line pragma to restore the proper
// file and line number after the include.
//sItx += String::ToString( "\r\n#line %d \r\n", includeLine );
dFree(includedText);
manip.insert(q-buffer, sItx);
char* manipBuf = dStrdup(manip.c_str());
p = manipBuf + (q - buffer);
dFree(buffer);
buffer = manipBuf;
}
p = dStrstr(p, "#include");
}
return buffer;
}
bool GFXGLShader::_loadShaderFromStream( GLuint shader,
const Torque::Path &path,
FileStream *s,
const Vector<GFXShaderMacro> &macros )
{
Vector<char*> buffers;
Vector<U32> lengths;
// The GLSL version declaration must go first!
const char *versionDecl = "#version 330\n";
buffers.push_back( dStrdup( versionDecl ) );
lengths.push_back( dStrlen( versionDecl ) );
//Required extensions. These are already checked when creating the GFX adapter, if we make it this far it's supported
const char* cubeArrayExt = "#extension GL_ARB_texture_cube_map_array : enable\n";
buffers.push_back(dStrdup(cubeArrayExt));
lengths.push_back(dStrlen(cubeArrayExt));
const char* gpuShader5Ext = "#extension GL_ARB_gpu_shader5 : enable\n";
buffers.push_back(dStrdup(gpuShader5Ext));
lengths.push_back(dStrlen(gpuShader5Ext));
const char* newLine = "\r\n";
buffers.push_back(dStrdup(newLine));
lengths.push_back(dStrlen(newLine));
// Now add all the macros.
for( U32 i = 0; i < macros.size(); i++ )
{
if(macros[i].name.isEmpty()) // TODO OPENGL
continue;
String define = String::ToString( "#define %s %s\n", macros[i].name.c_str(), macros[i].value.c_str() );
buffers.push_back( dStrdup( define.c_str() ) );
lengths.push_back( define.length() );
}
// Now finally add the shader source.
U32 shaderLen = s->getStreamSize();
char *buffer = _handleIncludes(path, s);
if ( !buffer )
return false;
buffers.push_back(buffer);
lengths.push_back(shaderLen);
glShaderSource(shader, buffers.size(), (const GLchar**)const_cast<const char**>(buffers.address()), NULL);
#if defined(TORQUE_DEBUG) && defined(TORQUE_DEBUG_GFX)
FileStream stream;
if ( !stream.open( path.getFullPath()+"_DEBUG", Torque::FS::File::Write ) )
{
AssertISV(false, avar("GFXGLShader::initShader - failed to write debug shader '%s'.", path.getFullPath().c_str()));
}
for(int i = 0; i < buffers.size(); ++i)
stream.writeText(buffers[i]);
#endif
// Cleanup the shader source buffer.
for ( U32 i=0; i < buffers.size(); i++ )
dFree( buffers[i] );
glCompileShader(shader);
return true;
}
bool GFXGLShader::initShader( const Torque::Path &file,
bool isVertex,
const Vector<GFXShaderMacro> &macros )
{
PROFILE_SCOPE(GFXGLShader_CompileShader);
GLuint activeShader = glCreateShader(isVertex ? GL_VERTEX_SHADER : GL_FRAGMENT_SHADER);
if(isVertex)
mVertexShader = activeShader;
else
mPixelShader = activeShader;
glAttachShader(mProgram, activeShader);
// Ok it's not in the shader gen manager, so ask Torque for it
FileStream stream;
if ( !stream.open( file, Torque::FS::File::Read ) )
{
AssertISV(false, avar("GFXGLShader::initShader - failed to open shader '%s'.", file.getFullPath().c_str()));
if ( smLogErrors )
Con::errorf( "GFXGLShader::initShader - Failed to open shader file '%s'.",
file.getFullPath().c_str() );
return false;
}
if (!_loadShaderFromStream(activeShader, file, &stream, macros))
{
if (smLogErrors)
Con::errorf("GFXGLShader::initShader - unable to load shader from stream: '%s'.", file.getFullPath().c_str());
return false;
}
GLint compile;
glGetShaderiv(activeShader, GL_COMPILE_STATUS, &compile);
// Dump the info log to the console
U32 logLength = 0;
glGetShaderiv(activeShader, GL_INFO_LOG_LENGTH, (GLint*)&logLength);
if ( logLength )
{
FrameAllocatorMarker fam;
char* log = (char*)fam.alloc(logLength);
glGetShaderInfoLog(activeShader, logLength, NULL, log);
if (compile == GL_FALSE )
{
if ( smLogErrors )
{
Con::errorf( "GFXGLShader::initShader - Error compiling shader!" );
Con::errorf( "Program %s: %s", file.getFullPath().c_str(), log );
}
}
else if ( smLogWarnings )
Con::warnf( "Program %s: %s", file.getFullPath().c_str(), log );
}
return compile != GL_FALSE;
}
/// Returns our list of shader constants, the material can get this and just set the constants it knows about
const Vector<GFXShaderConstDesc>& GFXGLShader::getShaderConstDesc() const
{
PROFILE_SCOPE(GFXGLShader_GetShaderConstants);
return mConstants;
}
/// Returns the alignment value for constType
U32 GFXGLShader::getAlignmentValue(const GFXShaderConstType constType) const
{
// Alignment is the same thing as size for us.
return shaderConstTypeSize(constType);
}
const String GFXGLShader::describeSelf() const
{
String ret;
ret = String::ToString(" Program: %i", mProgram);
ret += String::ToString(" Vertex Path: %s", mVertexFile.getFullPath().c_str());
ret += String::ToString(" Pixel Path: %s", mPixelFile.getFullPath().c_str());
return ret;
}
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