Work around NVIDIA driver issue with glLineWidth(NaN)

gpu/command_buffer/service/context_state_impl_autogen.h

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // This file is auto-generated from
 // gpu/command_buffer/build_gles2_cmd_buffer.py
 // It's formatted by clang-format using chromium coding style:
 //    clang-format -i -style=chromium filename
 // DO NOT EDIT!
 
@@ skipping 131 matching lines @@
     EnableDisable(GL_SCISSOR_TEST, enable_flags.cached_scissor_test);
     EnableDisable(GL_STENCIL_TEST, enable_flags.cached_stencil_test);
   }
 }
 
 void ContextState::InitState(const ContextState* prev_state) const {
   if (prev_state) {
     if ((blend_color_red != prev_state->blend_color_red) ||
         (blend_color_green != prev_state->blend_color_green) ||
         (blend_color_blue != prev_state->blend_color_blue) ||
-        (blend_color_alpha != prev_state->blend_color_alpha))
+        (blend_color_alpha != prev_state->blend_color_alpha)) {
       glBlendColor(blend_color_red,
                    blend_color_green,
                    blend_color_blue,
                    blend_color_alpha);
+    }
     if ((blend_equation_rgb != prev_state->blend_equation_rgb) ||
-        (blend_equation_alpha != prev_state->blend_equation_alpha))
+        (blend_equation_alpha != prev_state->blend_equation_alpha)) {
       glBlendEquationSeparate(blend_equation_rgb, blend_equation_alpha);
+    }
     if ((blend_source_rgb != prev_state->blend_source_rgb) ||
         (blend_dest_rgb != prev_state->blend_dest_rgb) ||
         (blend_source_alpha != prev_state->blend_source_alpha) ||
-        (blend_dest_alpha != prev_state->blend_dest_alpha))
+        (blend_dest_alpha != prev_state->blend_dest_alpha)) {
       glBlendFuncSeparate(blend_source_rgb,
                           blend_dest_rgb,
                           blend_source_alpha,
                           blend_dest_alpha);
+    }
     if ((color_clear_red != prev_state->color_clear_red) ||
         (color_clear_green != prev_state->color_clear_green) ||
         (color_clear_blue != prev_state->color_clear_blue) ||
-        (color_clear_alpha != prev_state->color_clear_alpha))
+        (color_clear_alpha != prev_state->color_clear_alpha)) {
       glClearColor(color_clear_red,
                    color_clear_green,
                    color_clear_blue,
                    color_clear_alpha);
-    if ((depth_clear != prev_state->depth_clear))
+    }
+    if ((depth_clear != prev_state->depth_clear)) {
       glClearDepth(depth_clear);
-    if ((stencil_clear != prev_state->stencil_clear))
+    }
+    if ((stencil_clear != prev_state->stencil_clear)) {
       glClearStencil(stencil_clear);
+    }
     if ((cached_color_mask_red != prev_state->cached_color_mask_red) ||
         (cached_color_mask_green != prev_state->cached_color_mask_green) ||
         (cached_color_mask_blue != prev_state->cached_color_mask_blue) ||
-        (cached_color_mask_alpha != prev_state->cached_color_mask_alpha))
+        (cached_color_mask_alpha != prev_state->cached_color_mask_alpha)) {
       glColorMask(cached_color_mask_red,
                   cached_color_mask_green,
                   cached_color_mask_blue,
                   cached_color_mask_alpha);
-    if ((cull_mode != prev_state->cull_mode))
+    }
+    if ((cull_mode != prev_state->cull_mode)) {
       glCullFace(cull_mode);
-    if ((depth_func != prev_state->depth_func))
+    }
+    if ((depth_func != prev_state->depth_func)) {
       glDepthFunc(depth_func);
-    if ((cached_depth_mask != prev_state->cached_depth_mask))
+    }
+    if ((cached_depth_mask != prev_state->cached_depth_mask)) {
       glDepthMask(cached_depth_mask);
-    if ((z_near != prev_state->z_near) || (z_far != prev_state->z_far))
+    }
+    if ((z_near != prev_state->z_near) || (z_far != prev_state->z_far)) {
       glDepthRange(z_near, z_far);
-    if ((front_face != prev_state->front_face))
+    }
+    if ((front_face != prev_state->front_face)) {
       glFrontFace(front_face);
+    }
     if (prev_state->hint_generate_mipmap != hint_generate_mipmap)
       glHint(GL_GENERATE_MIPMAP_HINT, hint_generate_mipmap);
     if (feature_info_->feature_flags().oes_standard_derivatives)
       if (prev_state->hint_fragment_shader_derivative !=
           hint_fragment_shader_derivative)
         glHint(GL_FRAGMENT_SHADER_DERIVATIVE_HINT_OES,
                hint_fragment_shader_derivative);
-    if ((line_width != prev_state->line_width))
-      glLineWidth(line_width);
+    if ((line_width != prev_state->line_width)) {
+      GLfloat sanitized_line_width = line_width;
+      if (base::IsNaN(line_width))
+        sanitized_line_width = 1.0f;
+      glLineWidth(sanitized_line_width);
+    }
     if (prev_state->pack_alignment != pack_alignment)
       glPixelStorei(GL_PACK_ALIGNMENT, pack_alignment);
     if (prev_state->unpack_alignment != unpack_alignment)
       glPixelStorei(GL_UNPACK_ALIGNMENT, unpack_alignment);
     if ((polygon_offset_factor != prev_state->polygon_offset_factor) ||
-        (polygon_offset_units != prev_state->polygon_offset_units))
+        (polygon_offset_units != prev_state->polygon_offset_units)) {
       glPolygonOffset(polygon_offset_factor, polygon_offset_units);
+    }
     if ((sample_coverage_value != prev_state->sample_coverage_value) ||
-        (sample_coverage_invert != prev_state->sample_coverage_invert))
+        (sample_coverage_invert != prev_state->sample_coverage_invert)) {
       glSampleCoverage(sample_coverage_value, sample_coverage_invert);
+    }
     if ((scissor_x != prev_state->scissor_x) ||
         (scissor_y != prev_state->scissor_y) ||
         (scissor_width != prev_state->scissor_width) ||
-        (scissor_height != prev_state->scissor_height))
+        (scissor_height != prev_state->scissor_height)) {
       glScissor(scissor_x, scissor_y, scissor_width, scissor_height);
+    }
     if ((stencil_front_func != prev_state->stencil_front_func) ||
         (stencil_front_ref != prev_state->stencil_front_ref) ||
         (stencil_front_mask != prev_state->stencil_front_mask))
       glStencilFuncSeparate(
           GL_FRONT, stencil_front_func, stencil_front_ref, stencil_front_mask);
     if ((stencil_back_func != prev_state->stencil_back_func) ||
         (stencil_back_ref != prev_state->stencil_back_ref) ||
         (stencil_back_mask != prev_state->stencil_back_mask))
       glStencilFuncSeparate(
           GL_BACK, stencil_back_func, stencil_back_ref, stencil_back_mask);
@@ skipping 13 matching lines @@
     if ((stencil_back_fail_op != prev_state->stencil_back_fail_op) ||
         (stencil_back_z_fail_op != prev_state->stencil_back_z_fail_op) ||
         (stencil_back_z_pass_op != prev_state->stencil_back_z_pass_op))
       glStencilOpSeparate(GL_BACK,
                           stencil_back_fail_op,
                           stencil_back_z_fail_op,
                           stencil_back_z_pass_op);
     if ((viewport_x != prev_state->viewport_x) ||
         (viewport_y != prev_state->viewport_y) ||
         (viewport_width != prev_state->viewport_width) ||
-        (viewport_height != prev_state->viewport_height))
+        (viewport_height != prev_state->viewport_height)) {
       glViewport(viewport_x, viewport_y, viewport_width, viewport_height);
+    }
   } else {
     glBlendColor(blend_color_red,
                  blend_color_green,
                  blend_color_blue,
                  blend_color_alpha);
     glBlendEquationSeparate(blend_equation_rgb, blend_equation_alpha);
     glBlendFuncSeparate(
         blend_source_rgb, blend_dest_rgb, blend_source_alpha, blend_dest_alpha);
     glClearColor(color_clear_red,
                  color_clear_green,
                  color_clear_blue,
                  color_clear_alpha);
     glClearDepth(depth_clear);
     glClearStencil(stencil_clear);
     glColorMask(cached_color_mask_red,
                 cached_color_mask_green,
                 cached_color_mask_blue,
                 cached_color_mask_alpha);
     glCullFace(cull_mode);
     glDepthFunc(depth_func);
     glDepthMask(cached_depth_mask);
     glDepthRange(z_near, z_far);
     glFrontFace(front_face);
     glHint(GL_GENERATE_MIPMAP_HINT, hint_generate_mipmap);
     if (feature_info_->feature_flags().oes_standard_derivatives)
       glHint(GL_FRAGMENT_SHADER_DERIVATIVE_HINT_OES,
              hint_fragment_shader_derivative);
-    glLineWidth(line_width);
+    GLfloat sanitized_line_width = line_width;
+    if (base::IsNaN(line_width))
+      sanitized_line_width = 1.0f;
+    glLineWidth(sanitized_line_width);
     glPixelStorei(GL_PACK_ALIGNMENT, pack_alignment);
     glPixelStorei(GL_UNPACK_ALIGNMENT, unpack_alignment);
     glPolygonOffset(polygon_offset_factor, polygon_offset_units);
     glSampleCoverage(sample_coverage_value, sample_coverage_invert);
     glScissor(scissor_x, scissor_y, scissor_width, scissor_height);
     glStencilFuncSeparate(
         GL_FRONT, stencil_front_func, stencil_front_ref, stencil_front_mask);
     glStencilFuncSeparate(
         GL_BACK, stencil_back_func, stencil_back_ref, stencil_back_mask);
     glStencilMaskSeparate(GL_FRONT, cached_stencil_front_writemask);
@@ skipping 678 matching lines @@
       *num_written = 1;
       if (params) {
         params[0] = static_cast<GLfloat>(enable_flags.stencil_test);
       }
       return true;
     default:
       return false;
   }
 }
 #endif  // GPU_COMMAND_BUFFER_SERVICE_CONTEXT_STATE_IMPL_AUTOGEN_H_