Increased varyings limit

For OpenGL ES 3.0, the varyings limit must be increased in order to meet the new lower limit. This doesn't solve how the varyings count is still verified at compile time instead of link time, but it allows us to remove an UNIMPLEMENTED() call. Bug b/37069434 Change-Id: Ib6641352b625d56c7c3cab119fadcdc19f794a5b Reviewed-on: https://swiftshader-review.googlesource.com/9188Tested-by: Alexis Hétu <sugoi@google.com> Reviewed-by: Nicolas Capens <capn@google.com>

Increased varyings limit
22be88e5 · Alexis Hetu · Alexis Hétu · a051886d · 22be88e5 · 22be88e5
Commit 22be88e5 authored Apr 04, 2017 by Alexis Hetu Committed by Alexis Hétu Apr 11, 2017
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Config.hpp src/Main/Config.hpp +2 -2

Context.cpp src/OpenGL/libGLESv2/Context.cpp +1 -4

Context.h src/OpenGL/libGLESv2/Context.h +1 -1

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--- a/src/Main/Config.hpp
+++ b/src/Main/Config.hpp
@@ -87,8 +87,8 @@ namespace sw
 		FRAGMENT_UNIFORM_VECTORS = 224,
 		VERTEX_UNIFORM_VECTORS = 256,
 		MAX_VERTEX_INPUTS = 16,
-		MAX_VERTEX_OUTPUTS = 12,
-		MAX_FRAGMENT_INPUTS = 10,
+		MAX_VERTEX_OUTPUTS = 22,
+		MAX_FRAGMENT_INPUTS = 20,
 		MAX_FRAGMENT_UNIFORM_BLOCKS = 12,
 		MAX_VERTEX_UNIFORM_BLOCKS = 12,
 		MAX_UNIFORM_BUFFER_BINDINGS = MAX_FRAGMENT_UNIFORM_BLOCKS + MAX_VERTEX_UNIFORM_BLOCKS,   // Limited to 127 by SourceParameter.bufferIndex in Shader.hpp

--- a/src/OpenGL/libGLESv2/Context.cpp
+++ b/src/OpenGL/libGLESv2/Context.cpp
@@ -2179,10 +2179,7 @@ template<typename T> bool Context::getIntegerv(GLenum pname, T *params) const
 			*params = MAX_UNIFORM_BUFFER_BINDINGS;
 			return true;
 		case GL_MAX_VARYING_COMPONENTS:
-			UNIMPLEMENTED();
-			// FIXME: should be MAX_VARYING_VECTORS * 4, but MAX_VARYING_VECTORS
-			// must be increased (see MAX_VERTEX_OUTPUTS and MAX_FRAGMENT_INPUTS)
-			*params = 60;
+			*params = MAX_VARYING_VECTORS * 4;
 			return true;
 		case GL_MAX_VERTEX_OUTPUT_COMPONENTS:
 			*params = MAX_VERTEX_OUTPUT_VECTORS * 4;

--- a/src/OpenGL/libGLESv2/Context.h
+++ b/src/OpenGL/libGLESv2/Context.h
@@ -77,7 +77,7 @@ enum
 	MAX_VERTEX_ATTRIBS = sw::MAX_VERTEX_INPUTS,
 	MAX_UNIFORM_VECTORS = 256,   // Device limit
 	MAX_VERTEX_UNIFORM_VECTORS = sw::VERTEX_UNIFORM_VECTORS - 3,   // Reserve space for gl_DepthRange
-	MAX_VARYING_VECTORS = 10,
+	MAX_VARYING_VECTORS = MIN(sw::MAX_FRAGMENT_INPUTS, sw::MAX_VERTEX_OUTPUTS),
 	MAX_TEXTURE_IMAGE_UNITS = sw::TEXTURE_IMAGE_UNITS,
 	MAX_VERTEX_TEXTURE_IMAGE_UNITS = sw::VERTEX_TEXTURE_IMAGE_UNITS,
 	MAX_COMBINED_TEXTURE_IMAGE_UNITS = MAX_TEXTURE_IMAGE_UNITS + MAX_VERTEX_TEXTURE_IMAGE_UNITS,