Add initial support for NV_path_rendering extension to gpu command buffer

gpu/command_buffer/build_gles2_cmd_buffer.py

Index: gpu/command_buffer/build_gles2_cmd_buffer.py
diff --git a/gpu/command_buffer/build_gles2_cmd_buffer.py b/gpu/command_buffer/build_gles2_cmd_buffer.py
index 84d70c0d4111c51ea22ad0228d8a04bb01f9d929..575f12a20f4b1a6b5a0e3fa43eba0923e047121e 100755
--- a/gpu/command_buffer/build_gles2_cmd_buffer.py
+++ b/gpu/command_buffer/build_gles2_cmd_buffer.py
@@ -479,6 +479,26 @@ _STATES = {
       },
     ],
   },
+  'MatrixValuesCHROMIUM': {
+    'type': 'NamedParameter',
+    'func': 'MatrixLoadfEXT',
+    'states': [
+      { 'enum': 'GL_MODELVIEW_MATRIX_CHROMIUM',
+        'enum_set': 'GL_MODELVIEW_CHROMIUM',
+        'name': 'modelview_matrix',
+        'type': 'GLfloat',
+        'default': ['0.0f'] * 16,

[Kimmo Kinnunen, 2014/04/15 17:52:27]

This is a mistake, the these defaults should be identity matrices..

[Kimmo Kinnunen, 2014/04/23 12:26:55]

Done.

+        'extension_flag': 'chromium_path_rendering',
+      },
+      { 'enum': 'GL_PROJECTION_MATRIX_CHROMIUM',
+        'enum_set': 'GL_PROJECTION_CHROMIUM',
+        'name': 'projection_matrix',
+        'type': 'GLfloat',
+        'default': ['0.0f'] * 16,
+        'extension_flag': 'chromium_path_rendering',
+      },
+    ],
+  },
 }
 
 # This is a list of enum names and their valid values. It is used to map
@@ -805,6 +825,13 @@ _ENUM_LISTS = {
       'GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_CUBE_MAP_FACE',
     ],
   },
+  'MatrixMode': {
+    'type': 'GLenum',
+    'valid': [
+      'GL_PROJECTION_CHROMIUM',
+      'GL_MODELVIEW_CHROMIUM',
+    ],
+  },
   'ProgramParameter': {
     'type': 'GLenum',
     'valid': [
@@ -2546,9 +2573,23 @@ _FUNCTION_INFO = {
       'extension': True,
       'chromium': True,
   },
+  'MatrixLoadfCHROMIUM': {
+    'type': 'PUT',
+    'count': 16,
+    'data_type': 'GLfloat',
+    'decoder_func': 'DoMatrixLoadfCHROMIUM',
+    'unit_test': False,
+    'chromium': True,
+    'extension': True,
+  },
+  'MatrixLoadIdentityCHROMIUM': {
+    'decoder_func': 'DoMatrixLoadIdentityCHROMIUM',
+    'unit_test': False,
+    'chromium': True,
+    'extension': True,
+  },
 }
 
-
 def Grouper(n, iterable, fillvalue=None):
   """Collect data into fixed-length chunks or blocks"""
   args = [iter(iterable)] * n
@@ -7083,7 +7124,11 @@ class GLGenerator(object):
     for state_name in sorted(_STATES.keys()):
       state = _STATES[state_name]
       for item in state['states']:
-        file.Write("%s %s;\n" % (item['type'], item['name']))
+        if isinstance(item['default'], list):
+          file.Write("%s %s[%s];\n" % (item['type'], item['name'],
+                                       len(item['default'])))

[vmiura, 2014/04/15 18:02:43]

nit: %d for len(..)

[Kimmo Kinnunen, 2014/04/23 12:26:55]

Done.

+        else:
+          file.Write("%s %s;\n" % (item['type'], item['name']))
     file.Write("\n")
 
     file.Close()
@@ -7123,10 +7168,24 @@ bool %s::GetStateAs%s(
         else:
           for item in state['states']:
             file.Write("    case %s:\n" % item['enum'])
-            file.Write("      *num_written = 1;\n")
-            file.Write("      if (params) {\n")
-            file.Write("        params[0] = static_cast<%s>(%s);\n" %
-                       (gl_type, item['name']))
+            if isinstance(item['default'], list):
+              item_len = len(item['default'])
+              file.Write("      *num_written = %s;\n" % item_len)

[vmiura, 2014/04/15 18:02:43]

nit: %d for item_len

[Kimmo Kinnunen, 2014/04/23 12:26:55]

Done.

+              file.Write("      if (params) {\n")
+              if item['type'] == gl_type:
+                file.Write("        memcpy(params, %s, sizeof(%s) * %s);\n" %
+                           (item['name'], item['type'], item_len))

[vmiura, 2014/04/15 18:02:43]

nit: %d for item_len

[Kimmo Kinnunen, 2014/04/23 12:26:55]

Done.

+              else:
+                file.Write("        for (size_t i = 0; i < %s; ++i) {\n" %
+                           item_len)
+                file.Write("          params[i] = static_cast<%s>(%s[i]);\n" %
+                           (gl_type, item['name']))
+                file.Write("        }\n");
+            else:
+              file.Write("      *num_written = 1;\n")
+              file.Write("      if (params) {\n")
+              file.Write("        params[0] = static_cast<%s>(%s);\n" %
+                         (gl_type, item['name']))
             file.Write("      }\n")
             file.Write("      return true;\n")
       for capability in _CAPABILITY_FLAGS:
@@ -7162,7 +7221,11 @@ bool %s::GetStateAs%s(
     for state_name in sorted(_STATES.keys()):
       state = _STATES[state_name]
       for item in state['states']:
-        file.Write("  %s = %s;\n" % (item['name'], item['default']))
+        if isinstance(item['default'], list):
+            for ndx, value in enumerate(item['default']):
+                file.Write("  %s[%s] = %s;\n" % (item['name'], ndx, value))

[vmiura, 2014/04/15 18:02:43]

nit: %d for ndx

[Kimmo Kinnunen, 2014/04/23 12:26:55]

Done.

+        else:
+            file.Write("  %s = %s;\n" % (item['name'], item['default']))
     file.Write("}\n")
 
     file.Write("""
@@ -7216,11 +7279,23 @@ void ContextState::InitState(const ContextState *prev_state) const {
               file.Write("  if (feature_info_->feature_flags().%s)\n  " %
                          item['extension_flag'])
             if test_prev:
-              file.Write("  if (prev_state->%s != %s)\n" %
-                         (item['name'], item['name']))
+              if isinstance(item['default'], list):
+                file.Write("  if (memcmp(prev_state->%s, %s, "
+                           "sizeof(%s) * %s))\n" %
+                           (item['name'], item['name'], item['type'],
+                            len(item['default'])))

[vmiura, 2014/04/15 18:02:43]

nit: %d

[Kimmo Kinnunen, 2014/04/23 12:26:55]

Done.

+              else:
+                file.Write("  if (prev_state->%s != %s)\n" %
+                           (item['name'], item['name']))
             file.Write("  gl%s(%s, %s);\n" %
-                       (state['func'], item['enum'], item['name']))
+                       (state['func'],
+                        (item['enum_set']
+                           if 'enum_set' in item else item['enum']),
+                        item['name']))
         else:
+          if 'extension_flag' in state:
+            file.Write("  if (feature_info_->feature_flags().%s)\n  " %
+                       state['extension_flag'])
           if test_prev:
             file.Write("  if (")
           args = []
@@ -7241,7 +7316,6 @@ void ContextState::InitState(const ContextState *prev_state) const {
     file.Write("  } else {")
     WriteStates(False)
     file.Write("  }")
-
     file.Write("}\n")
 
     file.Write("""bool ContextState::GetEnabled(GLenum cap) const {
@@ -7410,7 +7484,10 @@ void GLES2DecoderTestBase::SetupInitStateExpectations() {
             continue
           file.Write(
               "  EXPECT_CALL(*gl_, %s(%s, %s))\n" %
-              (state['func'], item['enum'], item['default']))
+              (state['func'],
+               (item['enum_set']
+                           if 'enum_set' in item else item['enum']),
+               item['default']))
           file.Write("      .Times(1)\n")
           file.Write("      .RetiresOnSaturation();\n")
       else:
@@ -7859,6 +7936,8 @@ def main(argv):
   # Add in states and capabilites to GLState
   for state_name in sorted(_STATES.keys()):
     state = _STATES[state_name]
+    if 'extension_flag' in state:
+      continue
     if 'enum' in state:
       _ENUM_LISTS['GLState']['valid'].append(state['enum'])
     else: