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convert_glsl_to_spirv: fail early, reduce copies, remove input buffer allocation

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This commit is contained in:
Kai Ninomiya 2019-08-14 14:33:11 -07:00
parent b16a4bc45e
commit a761284f70
2 changed files with 72 additions and 95 deletions
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13
glslang/glslang.pre.js
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@ -14,23 +14,24 @@ Module['compileGLSLZeroCopy'] = function(glsl, shader_stage, gen_debug) {
var p_output = Module['_malloc'](4);
var p_output_len = Module['_malloc'](4);
var err = ccall('convert_glsl_to_spirv',
var id = ccall('convert_glsl_to_spirv',
'number',
['string', 'number', 'number', 'number', 'boolean'],
[glsl, shader_stage_int, p_output, p_output_len, gen_debug]);
['string', 'number', 'boolean', 'number', 'number'],
[glsl, shader_stage_int, gen_debug, p_output, p_output_len]);
var output = getValue(p_output, 'i32');
var output_len = getValue(p_output_len, 'i32');
Module['_free'](p_output);
Module['_free'](p_output_len);
if (err !== 0 || output_len === 0) {
if (id === 0) {
throw new Error('GLSL compilation failed');
}
var ret = {};
ret.data = Module['HEAPU32'].subarray(output / 4, output / 4 + output_len);
var outputIndexU32 = output / 4;
ret.data = Module['HEAPU32'].subarray(outputIndexU32, outputIndexU32 + output_len);
ret.free = function() {
Module['_destroy_output_buffer'](output);
Module['_destroy_output_buffer'](id);
};
return ret;