Bring back GL funcs & macros that work on macOS

5 files changed, 67 insertions, 20 deletions

diff --git a/indra/llrender/llatmosphere.cpp b/indra/llrender/llatmosphere.cpp
index 8e37ca9b90..941ffe2711 100644
--- a/indra/llrender/llatmosphere.cpp
+++ b/indra/llrender/llatmosphere.cpp
@@ -241,7 +241,11 @@ LLGLTexture* LLAtmosphere::getTransmittance()
         m_transmittance->generateGLTexture();
         m_transmittance->setAddressMode(LLTexUnit::eTextureAddressMode::TAM_CLAMP);
         m_transmittance->setFilteringOption(LLTexUnit::eTextureFilterOptions::TFO_BILINEAR);
+#if GL_ARB_texture_float
+        m_transmittance->setExplicitFormat(GL_RGB32F_ARB, GL_RGB, GL_FLOAT);
+#else
         m_transmittance->setExplicitFormat(GL_RGB32F, GL_RGB, GL_FLOAT);
+#endif
         m_transmittance->setTarget(GL_TEXTURE_2D, LLTexUnit::TT_TEXTURE);
     }
     return m_transmittance;
@@ -255,7 +259,11 @@ LLGLTexture* LLAtmosphere::getScattering()
         m_scattering->generateGLTexture();
         m_scattering->setAddressMode(LLTexUnit::eTextureAddressMode::TAM_CLAMP);
         m_scattering->setFilteringOption(LLTexUnit::eTextureFilterOptions::TFO_BILINEAR);
+#if GL_ARB_texture_float
+        m_scattering->setExplicitFormat(GL_RGB16F_ARB, GL_RGB, GL_FLOAT);
+#else
         m_scattering->setExplicitFormat(GL_RGB16F, GL_RGB, GL_FLOAT);
+#endif
         m_scattering->setTarget(GL_TEXTURE_3D, LLTexUnit::TT_TEXTURE_3D);
     }
     return m_scattering;
@@ -269,7 +277,11 @@ LLGLTexture* LLAtmosphere::getMieScattering()
         m_mie_scatter_texture->generateGLTexture();
         m_mie_scatter_texture->setAddressMode(LLTexUnit::eTextureAddressMode::TAM_CLAMP);
         m_mie_scatter_texture->setFilteringOption(LLTexUnit::eTextureFilterOptions::TFO_BILINEAR);
+#if GL_ARB_texture_float
+        m_mie_scatter_texture->setExplicitFormat(GL_RGB16F_ARB, GL_RGB, GL_FLOAT);
+#else
         m_mie_scatter_texture->setExplicitFormat(GL_RGB16F, GL_RGB, GL_FLOAT);
+#endif
         m_mie_scatter_texture->setTarget(GL_TEXTURE_3D, LLTexUnit::TT_TEXTURE_3D);
     }
     return m_mie_scatter_texture;
@@ -283,7 +295,11 @@ LLGLTexture* LLAtmosphere::getIlluminance()
         m_illuminance->generateGLTexture();
         m_illuminance->setAddressMode(LLTexUnit::eTextureAddressMode::TAM_CLAMP);
         m_illuminance->setFilteringOption(LLTexUnit::eTextureFilterOptions::TFO_BILINEAR);
+#if GL_ARB_texture_float
+        m_illuminance->setExplicitFormat(GL_RGB32F_ARB, GL_RGB, GL_FLOAT);
+#else
         m_illuminance->setExplicitFormat(GL_RGB32F, GL_RGB, GL_FLOAT);
+#endif
         m_illuminance->setTarget(GL_TEXTURE_2D, LLTexUnit::TT_TEXTURE);
     }
     return m_illuminance;
diff --git a/indra/llrender/llgl.cpp b/indra/llrender/llgl.cpp
index f597b1a932..9c809d5bd0 100644
--- a/indra/llrender/llgl.cpp
+++ b/indra/llrender/llgl.cpp
@@ -777,10 +777,12 @@ bool LLGLManager::initGL()
 
 	if (mHasTextureMultisample)
 	{
+#if GL_VERSION_3_2
 		glGetIntegerv(GL_MAX_COLOR_TEXTURE_SAMPLES, &mMaxColorTextureSamples);
 		glGetIntegerv(GL_MAX_DEPTH_TEXTURE_SAMPLES, &mMaxDepthTextureSamples);
 		glGetIntegerv(GL_MAX_INTEGER_SAMPLES, &mMaxIntegerSamples);
 		glGetIntegerv(GL_MAX_SAMPLE_MASK_WORDS, &mMaxSampleMaskWords);
+#endif
 	}
 
 	stop_glerror();
@@ -1621,8 +1623,13 @@ void LLGLState::initClass()
 	// sStateMap[GL_TEXTURE_2D] = GL_TRUE;
 	
 	//make sure multisample defaults to disabled
+#if GL_ARB_multisample
+	sStateMap[GL_MULTISAMPLE_ARB] = GL_FALSE;
+	glDisable(GL_MULTISAMPLE_ARB);
+#elif GL_EXT_multisample || GL_EXT_multisample_compatibility
 	sStateMap[GL_MULTISAMPLE_EXT] = GL_FALSE;
 	glDisable(GL_MULTISAMPLE_EXT);
+#endif
 }
 
 //static
diff --git a/indra/llrender/llglslshader.cpp b/indra/llrender/llglslshader.cpp
index 58a9e28270..f587fb414c 100644
--- a/indra/llrender/llglslshader.cpp
+++ b/indra/llrender/llglslshader.cpp
@@ -797,16 +797,21 @@ GLint LLGLSLShader::mapUniformTextureChannel(GLint location, GLenum type)
 {
     LL_PROFILE_ZONE_SCOPED_CATEGORY_SHADER;
 
+#if GL_VERSION_2_0 || GL_VERSION_3_2
     if (
 #if GL_VERSION_2_0
-    (type >= GL_SAMPLER_1D_ARB && type <= GL_SAMPLER_2D_RECT_SHADOW_ARB) ||
+    (type >= GL_SAMPLER_1D_ARB && type <= GL_SAMPLER_2D_RECT_SHADOW_ARB)
 #endif
-        type == GL_SAMPLER_2D_MULTISAMPLE)
+#if GL_VERSION_3_2
+    || type == GL_SAMPLER_2D_MULTISAMPLE
+#endif
+    )
     {   //this here is a texture
         glUniform1i(location, mActiveTextureChannels);
         LL_DEBUGS("ShaderUniform") << "Assigned to texture channel " << mActiveTextureChannels << LL_ENDL;
         return mActiveTextureChannels++;
     }
+#endif // GL_VERSION_2_0 || GL_VERSION_3_2
     return -1;
 }
 
diff --git a/indra/llrender/llrender.cpp b/indra/llrender/llrender.cpp
index 89de6b93ea..91ce983e5a 100644
--- a/indra/llrender/llrender.cpp
+++ b/indra/llrender/llrender.cpp
@@ -906,9 +906,13 @@ void LLRender::init(bool needs_vertex_buffer)
 	{ //bind a dummy vertex array object so we're core profile compliant
 //#ifdef GL_ARB_vertex_array_object
 		U32 ret;
+#if GL_APPLE_vertex_array_object
+		glGenVertexArraysAPPLE(1, &ret);
+		glBindVertexArrayAPPLE(ret);
+#else
 		glGenVertexArrays(1, &ret);
 		glBindVertexArray(ret);
-//#endif
+#endif
 	}
 
     if (needs_vertex_buffer)
diff --git a/indra/llrender/llvertexbuffer.cpp b/indra/llrender/llvertexbuffer.cpp
index f71403d2f4..0c8a8fed6a 100644
--- a/indra/llrender/llvertexbuffer.cpp
+++ b/indra/llrender/llvertexbuffer.cpp
@@ -404,8 +404,11 @@ U32 LLVertexBuffer::getVAOName()
 	else
 	{
 //#ifdef GL_ARB_vertex_array_object
+#if GL_APPLE_vertex_array_object
+		glGenVertexArraysAPPLE(1, &ret);
+#else
 		glGenVertexArrays(1, &ret);
-//#endif
+#endif
 	}
 
 	return ret;		
@@ -758,8 +761,11 @@ void LLVertexBuffer::unbind()
 	if (sGLRenderArray)
 	{
 //#if GL_ARB_vertex_array_object
+#if GL_APPLE_vertex_array_object
+		glBindVertexArrayAPPLE(0);
+#else
 		glBindVertexArray(0);
-//#endif
+#endif
 		sGLRenderArray = 0;
 		sGLRenderIndices = 0;
 		sIBOActive = false;
@@ -1259,8 +1265,11 @@ void LLVertexBuffer::setupVertexArray()
 
     LL_PROFILE_ZONE_SCOPED_CATEGORY_VERTEX;
 //#if GL_ARB_vertex_array_object
+#if GL_APPLE_vertex_array_object
+	glBindVertexArrayAPPLE(mGLArray);
+#else
 	glBindVertexArray(mGLArray);
-//#endif
+#endif
 	sGLRenderArray = mGLArray;
 
 	static const U32 attrib_size[] = 
@@ -1534,12 +1543,10 @@ U8* LLVertexBuffer::mapVertexBuffer(S32 type, S32 index, S32 count, bool map_ran
 				{
 					if (map_range)
 					{
-/*
-#ifndef LL_MESA_HEADLESS
+#if !LL_MESA_HEADLESS && GL_APPLE_flush_buffer_range && LL_DARWIN
 						glBufferParameteriAPPLE(GL_ARRAY_BUFFER_ARB, GL_BUFFER_SERIALIZED_MODIFY_APPLE, GL_FALSE);
 						glBufferParameteriAPPLE(GL_ARRAY_BUFFER_ARB, GL_BUFFER_FLUSHING_UNMAP_APPLE, GL_FALSE);
 #endif
-*/
 						src = (U8*) glMapBuffer(GL_ARRAY_BUFFER, GL_WRITE_ONLY);
 					}
 					else
@@ -1709,12 +1716,10 @@ U8* LLVertexBuffer::mapIndexBuffer(S32 index, S32 count, bool map_range)
 				{
 					if (map_range)
 					{
-/*
-#ifndef LL_MESA_HEADLESS
+#if !LL_MESA_HEADLESS && GL_APPLE_flush_buffer_range && LL_DARWIN
 						glBufferParameteriAPPLE(GL_ELEMENT_ARRAY_BUFFER_ARB, GL_BUFFER_SERIALIZED_MODIFY_APPLE, GL_FALSE);
 						glBufferParameteriAPPLE(GL_ELEMENT_ARRAY_BUFFER_ARB, GL_BUFFER_FLUSHING_UNMAP_APPLE, GL_FALSE);
 #endif
-*/
 						src = (U8*) glMapBuffer(GL_ELEMENT_ARRAY_BUFFER, GL_WRITE_ONLY);
 					}
 					else
@@ -1840,13 +1845,17 @@ void LLVertexBuffer::unmapBuffer()
 						S32 length = sTypeSize[region.mType]*region.mCount;
 						if (gGLManager.mHasMapBufferRange)
 						{
-#if GL_ARB_map_buffer_range || GL_EXT_map_buffer_range
+#if GL_APPLE_flush_buffer_range && LL_DARWIN
+							glFlushMappedBufferRangeAPPLE(GL_ARRAY_BUFFER, offset, length);
+#elif GL_ARB_map_buffer_range || GL_EXT_map_buffer_range
 							glFlushMappedBufferRange(GL_ARRAY_BUFFER, offset, length);
 #endif
 						}
 						else if (gGLManager.mHasFlushBufferRange)
                         {
-#ifndef LL_MESA_HEADLESS
+#if !LL_MESA_HEADLESS && GL_APPLE_flush_buffer_range && LL_DARWIN
+							glFlushMappedBufferRangeAPPLE(GL_ARRAY_BUFFER, offset, length);
+#else
 							glFlushMappedBufferRange(GL_ARRAY_BUFFER, offset, length);
 #endif
 						}
@@ -1920,20 +1929,20 @@ void LLVertexBuffer::unmapBuffer()
 						S32 length = sizeof(U16)*region.mCount;
 						if (gGLManager.mHasMapBufferRange)
 						{
-#if GL_ARB_map_buffer_range || GL_EXT_map_buffer_range
+#if GL_APPLE_flush_buffer_range && LL_DARWIN
+							glFlushMappedBufferRangeAPPLE(GL_ELEMENT_ARRAY_BUFFER, offset, length);
+#elif GL_ARB_map_buffer_range || GL_EXT_map_buffer_range
 							glFlushMappedBufferRange(GL_ELEMENT_ARRAY_BUFFER, offset, length);
 #endif
 						}
-						/*
 						else if (gGLManager.mHasFlushBufferRange)
 						{
-#ifdef GL_APPLE_flush_buffer_range
+#if GL_APPLE_flush_buffer_range && LL_DARWIN
 #ifndef LL_MESA_HEADLESS
 							glFlushMappedBufferRangeAPPLE(GL_ELEMENT_ARRAY_BUFFER_ARB, offset, length);
 #endif
 #endif
 						}
-						*/
 						stop_glerror();
 					}
 
@@ -2071,8 +2080,11 @@ bool LLVertexBuffer::bindGLArray()
 		{
             LL_PROFILE_ZONE_SCOPED_CATEGORY_VERTEX;
 //#if GL_ARB_vertex_array_object
+#if GL_APPLE_vertex_array_object
+			glBindVertexArrayAPPLE(mGLArray);
+#else
 			glBindVertexArray(mGLArray);
-//#endif
+#endif
 			sGLRenderArray = mGLArray;
 		}
 
@@ -2301,8 +2313,11 @@ void LLVertexBuffer::setBuffer(U32 data_mask)
 		if (sGLRenderArray)
 		{
 //#if GL_ARB_vertex_array_object
+#if GL_APPLE_vertex_array_object
+			glBindVertexArrayAPPLE(0);
+#else
 			glBindVertexArray(0);
-//#endif
+#endif
 			sGLRenderArray = 0;
 			sGLRenderIndices = 0;
 			sIBOActive = false;