emulator/opengl/emugen: Use local variables for parameters.

Modify the generated decoder to extract paramters from the
stream into local variables, the rules are:

  - non-pointer parameters are extracted into local variables
    named "var_<name>", where <name> is the parameter name as
    it appears in the protocol specification for the entry.

  - for input pointers, use "inptr_<name>", as well as
    "size_<name>" for the corresponding size in bytes.

  - for output pointers, use "outptr_<name>" and "size_<name>"

This makes the generated code easier to understand, for example
the following:

	case OP_glBindAttribLocation: {
		size_t tmpPtr2Size = (size_t)*(uint32_t *)(ptr + 8 + 4 + 4);
		InputBuffer tmpPtr2(ptr + 8 + 4 + 4 + 4, tmpPtr2Size);
		DEBUG("gl2(%p): glBindAttribLocation(%u %u %p(%u) )\n", stream,Unpack<GLuint,uint32_t>(ptr + 8), Unpack<GLuint,uint32_t>(ptr + 8 + 4), (const GLchar*)(tmpPtr2.get()), (uint32_t)tmpPtr2Size);
		this->glBindAttribLocation(Unpack<GLuint,uint32_t>(ptr + 8), Unpack<GLuint,uint32_t>(ptr + 8 + 4), (const GLchar*)(tmpPtr2.get()));
		SET_LASTCALL("glBindAttribLocation");
		break;
	}

becomes:

	case OP_glBindAttribLocation: {
		GLuint var_program = Unpack<GLuint,uint32_t>(ptr + 8);
		GLuint var_index = Unpack<GLuint,uint32_t>(ptr + 8 + 4);
		uint32_t size_name = Unpack<uint32_t,uint32_t>(ptr + 8 + 4 + 4);
		InputBuffer inptr_name(ptr + 8 + 4 + 4 + 4, size_name);
		DEBUG("gl2(%p): glBindAttribLocation(%u %u %p(%u) )\n", stream,var_program, var_index, (const GLchar*)(inptr_name.get()), size_name);
		this->glBindAttribLocation(var_program, var_index, (const GLchar*)(inptr_name.get()));
		SET_LASTCALL("glBindAttribLocation");
		break;
	}

Change-Id: Ifa8c73eec85b818d6d8b6371587da9fdfa57de8e

0 files changed, 0 insertions, 0 deletions