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emscripten support

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This commit is contained in:
Konstantin Käfer
2014-01-07 16:52:23 +01:00
parent 044a7b5dcd
commit 528eaf475e
24 changed files with 406 additions and 94 deletions
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16
src/renderer/shader.cpp
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@@ -1,4 +1,5 @@
#include <llmr/renderer/shader.hpp>
#include <llmr/renderer/shader.hpp>
#include <llmr/platform/gl.hpp>
#include <cstdlib>
#include <cstdio>
@@ -102,7 +103,20 @@ bool Shader::compileShader(GLuint *shader, GLenum type, const GLchar *source) {
GLint status;
*shader = glCreateShader(type);
#ifdef EMSCRIPTEN
// Add WebGL GSLSL precision premable
const char *preamble = "precision mediump float;\n\n";
int preamble_length = strlen(preamble);
int source_length = strlen(source);
char *modified_source = (char *)malloc(preamble_length + source_length);
strncpy(&modified_source[0], preamble, preamble_length);
strncpy(&modified_source[preamble_length], source, source_length);
glShaderSource(*shader, 1, (const GLchar **)(&modified_source), NULL);
#else
glShaderSource(*shader, 1, &source, NULL);
#endif
glCompileShader(*shader);
#if defined(DEBUG)