Refactor maximum texture dimensions.

OpenGL has separate implementation-defined texture size limits, for
3D textures and array textures. For now just give them the same value.

Bug chromium:835299

Change-Id: Ifaf537511f016e21992388f56598d5ec12a393b8
Reviewed-on: https://swiftshader-review.googlesource.com/18788
Tested-by: Nicolas Capens <nicolascapens@google.com>
Reviewed-by: Alexis Hétu <sugoi@google.com>

src/OpenGL/libGLESv2/Context.cpp

diff --git a/src/OpenGL/libGLESv2/Context.cpp b/src/OpenGL/libGLESv2/Context.cpp
index b8d9542..11541e7 100644
--- a/src/OpenGL/libGLESv2/Context.cpp
+++ b/src/OpenGL/libGLESv2/Context.cpp
@@ -2218,7 +2218,7 @@
 			*params = clientVersion;
 			return true;
 		case GL_MAX_3D_TEXTURE_SIZE:
-			*params = IMPLEMENTATION_MAX_TEXTURE_SIZE;
+			*params = IMPLEMENTATION_MAX_3D_TEXTURE_SIZE;
 			return true;
 		case GL_MAX_ARRAY_TEXTURE_LAYERS:
 			*params = IMPLEMENTATION_MAX_TEXTURE_SIZE;

src/OpenGL/libGLESv2/Texture.h

diff --git a/src/OpenGL/libGLESv2/Texture.h b/src/OpenGL/libGLESv2/Texture.h
index 52e2fb2..3b4bfc5 100644
--- a/src/OpenGL/libGLESv2/Texture.h
+++ b/src/OpenGL/libGLESv2/Texture.h
@@ -37,7 +37,9 @@
 {
 	IMPLEMENTATION_MAX_TEXTURE_LEVELS = sw::MIPMAP_LEVELS,
 	IMPLEMENTATION_MAX_TEXTURE_SIZE = 1 << (IMPLEMENTATION_MAX_TEXTURE_LEVELS - 1),
-	IMPLEMENTATION_MAX_CUBE_MAP_TEXTURE_SIZE = 1 << (IMPLEMENTATION_MAX_TEXTURE_LEVELS - 1),
+	IMPLEMENTATION_MAX_3D_TEXTURE_SIZE = IMPLEMENTATION_MAX_TEXTURE_SIZE,
+	IMPLEMENTATION_MAX_CUBE_MAP_TEXTURE_SIZE = IMPLEMENTATION_MAX_TEXTURE_SIZE,
+	IMPLEMENTATION_MAX_ARRAY_TEXTURE_LAYERS = IMPLEMENTATION_MAX_TEXTURE_SIZE,
 	IMPLEMENTATION_MAX_RENDERBUFFER_SIZE = sw::OUTLINE_RESOLUTION,
 };
 

src/OpenGL/libGLESv2/libGLESv2.cpp

diff --git a/src/OpenGL/libGLESv2/libGLESv2.cpp b/src/OpenGL/libGLESv2/libGLESv2.cpp
index b0c0836..0bf98be 100644
--- a/src/OpenGL/libGLESv2/libGLESv2.cpp
+++ b/src/OpenGL/libGLESv2/libGLESv2.cpp
@@ -6264,7 +6264,7 @@
 		return error(GL_INVALID_VALUE);
 	}
 
-	const GLsizei maxSize3D = es2::IMPLEMENTATION_MAX_TEXTURE_SIZE >> level;
+	const GLsizei maxSize3D = es2::IMPLEMENTATION_MAX_3D_TEXTURE_SIZE >> level;
 	if((width < 0) || (height < 0) || (depth < 0) || (width > maxSize3D) || (height > maxSize3D) || (depth > maxSize3D))
 	{
 		return error(GL_INVALID_VALUE);
@@ -6412,7 +6412,7 @@
 		return error(GL_INVALID_VALUE);
 	}
 
-	const GLsizei maxSize3D = es2::IMPLEMENTATION_MAX_TEXTURE_SIZE >> level;
+	const GLsizei maxSize3D = es2::IMPLEMENTATION_MAX_3D_TEXTURE_SIZE >> level;
 	if((width < 0) || (height < 0) || (depth < 0) || (width > maxSize3D) || (height > maxSize3D) || (depth > maxSize3D) ||(border != 0) || (imageSize < 0))
 	{
 		return error(GL_INVALID_VALUE);

src/OpenGL/libGLESv2/libGLESv3.cpp

diff --git a/src/OpenGL/libGLESv2/libGLESv3.cpp b/src/OpenGL/libGLESv2/libGLESv3.cpp
index 381a3aa..5d35d06 100644
--- a/src/OpenGL/libGLESv2/libGLESv3.cpp
+++ b/src/OpenGL/libGLESv2/libGLESv3.cpp
@@ -353,7 +353,7 @@
 		return error(GL_INVALID_VALUE);
 	}
 
-	const GLsizei maxSize3D = es2::IMPLEMENTATION_MAX_TEXTURE_SIZE >> level;
+	const GLsizei maxSize3D = es2::IMPLEMENTATION_MAX_3D_TEXTURE_SIZE >> level;
 	if((width < 0) || (height < 0) || (depth < 0) || (width > maxSize3D) || (height > maxSize3D) || (depth > maxSize3D))
 	{
 		return error(GL_INVALID_VALUE);
@@ -523,7 +523,7 @@
 		return error(GL_INVALID_VALUE);
 	}
 
-	const GLsizei maxSize3D = es2::IMPLEMENTATION_MAX_TEXTURE_SIZE >> level;
+	const GLsizei maxSize3D = es2::IMPLEMENTATION_MAX_3D_TEXTURE_SIZE >> level;
 	if((width < 0) || (height < 0) || (depth < 0) || (width > maxSize3D) || (height > maxSize3D) || (depth > maxSize3D) || (border != 0) || (imageSize < 0))
 	{
 		return error(GL_INVALID_VALUE);
@@ -1235,12 +1235,22 @@
 				return error(GL_INVALID_OPERATION);
 			}
 
+			if(level >= es2::IMPLEMENTATION_MAX_TEXTURE_LEVELS)
+			{
+				return error(GL_INVALID_VALUE);
+			}
+
 			textarget = textureObject->getTarget();
 			switch(textarget)
 			{
 			case GL_TEXTURE_3D:
+				if(layer >= es2::IMPLEMENTATION_MAX_3D_TEXTURE_SIZE)
+				{
+					return error(GL_INVALID_VALUE);
+				}
+				break;
 			case GL_TEXTURE_2D_ARRAY:
-				if(layer >= es2::IMPLEMENTATION_MAX_TEXTURE_SIZE || (level >= es2::IMPLEMENTATION_MAX_TEXTURE_LEVELS))
+				if(layer >= es2::IMPLEMENTATION_MAX_ARRAY_TEXTURE_LAYERS)
 				{
 					return error(GL_INVALID_VALUE);
 				}