void TranslatorGLSL::writeExtensionBehavior(TIntermNode *root)
{
TInfoSinkBase &sink = getInfoSink().obj;
const TExtensionBehavior &extBehavior = getExtensionBehavior();
for (const auto &iter : extBehavior)
{
if (iter.second == EBhUndefined)
{
continue;
}
if (getOutputType() == SH_GLSL_COMPATIBILITY_OUTPUT)
{
// For GLSL output, we don't need to emit most extensions explicitly,
// but some we need to translate in GL compatibility profile.
if (iter.first == "GL_EXT_shader_texture_lod")
{
sink << "#extension GL_ARB_shader_texture_lod : " << getBehaviorString(iter.second)
<< "\n";
}
if (iter.first == "GL_EXT_draw_buffers")
{
sink << "#extension GL_ARB_draw_buffers : " << getBehaviorString(iter.second)
<< "\n";
}
}
}
// GLSL ES 3 explicit location qualifiers need to use an extension before GLSL 330
if (getShaderVersion() >= 300 && getOutputType() < SH_GLSL_330_CORE_OUTPUT &&
getShaderType() != GL_COMPUTE_SHADER)
{
sink << "#extension GL_ARB_explicit_attrib_location : require\n";
}
// Need to enable gpu_shader5 to have index constant sampler array indexing
if (getOutputType() != SH_ESSL_OUTPUT && getOutputType() < SH_GLSL_400_CORE_OUTPUT &&
getShaderVersion() == 100)
{
// Don't use "require" on to avoid breaking WebGL 1 on drivers that silently
// support index constant sampler array indexing, but don't have the extension or
// on drivers that don't have the extension at all as it would break WebGL 1 for
// some users.
sink << "#extension GL_ARB_gpu_shader5 : enable\n";
}
TExtensionGLSL extensionGLSL(getOutputType());
root->traverse(&extensionGLSL);
for (const auto &ext : extensionGLSL.getEnabledExtensions())
{
sink << "#extension " << ext << " : enable\n";
}
for (const auto &ext : extensionGLSL.getRequiredExtensions())
{
sink << "#extension " << ext << " : require\n";
}
}
void TranslatorGLSL::writeExtensionBehavior(TIntermNode *root)
{
TInfoSinkBase& sink = getInfoSink().obj;
const TExtensionBehavior& extBehavior = getExtensionBehavior();
for (const auto &iter : extBehavior)
{
if (iter.second == EBhUndefined)
{
continue;
}
// For GLSL output, we don't need to emit most extensions explicitly,
// but some we need to translate.
if (iter.first == "GL_EXT_shader_texture_lod")
{
sink << "#extension GL_ARB_shader_texture_lod : " << getBehaviorString(iter.second)
<< "\n";
}
}
// GLSL ES 3 explicit location qualifiers need to use an extension before GLSL 330
if (getShaderVersion() >= 300 && getOutputType() < SH_GLSL_330_CORE_OUTPUT)
{
sink << "#extension GL_ARB_explicit_attrib_location : require\n";
}
TExtensionGLSL extensionGLSL(getOutputType());
root->traverse(&extensionGLSL);
for (const auto &ext : extensionGLSL.getEnabledExtensions())
{
sink << "#extension " << ext << " : enable\n";
}
for (const auto &ext : extensionGLSL.getRequiredExtensions())
{
sink << "#extension " << ext << " : require\n";
}
}
void TranslatorGLSL::writeExtensionBehavior(TIntermNode *root, ShCompileOptions compileOptions)
{
TInfoSinkBase &sink = getInfoSink().obj;
const TExtensionBehavior &extBehavior = getExtensionBehavior();
for (const auto &iter : extBehavior)
{
if (iter.second == EBhUndefined)
{
continue;
}
if (getOutputType() == SH_GLSL_COMPATIBILITY_OUTPUT)
{
// For GLSL output, we don't need to emit most extensions explicitly,
// but some we need to translate in GL compatibility profile.
if (iter.first == TExtension::EXT_shader_texture_lod)
{
sink << "#extension GL_ARB_shader_texture_lod : " << GetBehaviorString(iter.second)
<< "\n";
}
if (iter.first == TExtension::EXT_draw_buffers)
{
sink << "#extension GL_ARB_draw_buffers : " << GetBehaviorString(iter.second)
<< "\n";
}
if (iter.first == TExtension::EXT_geometry_shader)
{
sink << "#extension GL_ARB_geometry_shader4 : " << GetBehaviorString(iter.second)
<< "\n";
}
}
const bool isMultiview = (iter.first == TExtension::OVR_multiview);
if (isMultiview && getShaderType() == GL_VERTEX_SHADER &&
(compileOptions & SH_SELECT_VIEW_IN_NV_GLSL_VERTEX_SHADER) != 0u)
{
// Emit the NV_viewport_array2 extension in a vertex shader if the
// SH_SELECT_VIEW_IN_NV_GLSL_VERTEX_SHADER option is set and the OVR_multiview(2)
// extension is requested.
sink << "#extension GL_NV_viewport_array2 : require\n";
}
}
// GLSL ES 3 explicit location qualifiers need to use an extension before GLSL 330
if (getShaderVersion() >= 300 && getOutputType() < SH_GLSL_330_CORE_OUTPUT &&
getShaderType() != GL_COMPUTE_SHADER)
{
sink << "#extension GL_ARB_explicit_attrib_location : require\n";
}
// Need to enable gpu_shader5 to have index constant sampler array indexing
if (getOutputType() != SH_ESSL_OUTPUT && getOutputType() < SH_GLSL_400_CORE_OUTPUT &&
getShaderVersion() == 100)
{
// Don't use "require" on to avoid breaking WebGL 1 on drivers that silently
// support index constant sampler array indexing, but don't have the extension or
// on drivers that don't have the extension at all as it would break WebGL 1 for
// some users.
sink << "#extension GL_ARB_gpu_shader5 : enable\n";
}
TExtensionGLSL extensionGLSL(getOutputType());
root->traverse(&extensionGLSL);
for (const auto &ext : extensionGLSL.getEnabledExtensions())
{
sink << "#extension " << ext << " : enable\n";
}
for (const auto &ext : extensionGLSL.getRequiredExtensions())
{
sink << "#extension " << ext << " : require\n";
}
}
