void Game()
{
bool running = Renderer_Init( 800, 600, "Bahamuto" );
Texture_Create( "Data\\Image\\bahaAlpha.png" );
Shader_Create("Data\\Shader\\texture.fx");
while( running && !Window_GetMessage() )
{
/*float delta_time = 1.0f/60.0f;*/
// Run systems
Renderer_Draw();
}
Renderer_Terminate();
}
void demo5_onSurfaceCreated(void)
{
int i = 0;
const char *vShaderStr =
"uniform float u_time; \n"
"uniform vec3 u_centerPosition; \n"
"attribute float a_lifetime; \n"
"attribute vec3 a_startPosition; \n"
"attribute vec3 a_endPosition; \n"
"varying float v_lifetime; \n"
"void main() \n"
"{ \n"
" if ( u_time <= a_lifetime ) \n"
" { \n"
" gl_Position.xyz = a_startPosition + \n"
" (u_time * a_endPosition); \n"
" gl_Position.xyz += u_centerPosition; \n"
" gl_Position.w = 1.0; \n"
" } \n"
" else \n"
" gl_Position = vec4( -1000, -1000, 0, 0 ); \n"
" v_lifetime = 1.0 - ( u_time / a_lifetime ); \n"
" v_lifetime = clamp ( v_lifetime, 0.0, 1.0 ); \n"
" gl_PointSize = ( v_lifetime * v_lifetime ) * 40.0; \n"
"} \n";
const char *fShaderStr =
"precision mediump float; \n"
"uniform vec4 u_color; \n"
"varying float v_lifetime; \n"
"uniform sampler2D s_texture; \n"
"void main() \n"
"{ \n"
" vec4 texColor; \n"
" texColor = texture2D( s_texture, gl_PointCoord ); \n"
" gl_FragColor = vec4( u_color ) * texColor; \n"
" gl_FragColor.a *= v_lifetime; \n"
"} \n";
glClearColor(0.3f, 0.3f, 0.3f, 0.0f);
memset(&context, 0, sizeof(demo5_ctx_t));
context.shader = Shader_Create(&vShaderStr, &fShaderStr);
shader_t *shader = context.shader;
Shader_Link(shader);
Shader_ValidateProgram(shader);
context.lifetimeLoc = Shader_GetAttribLocation(shader, "a_lifetime");
context.startPositionLoc = Shader_GetAttribLocation(shader, "a_startPosition");
context.endPositionLoc = Shader_GetAttribLocation(shader, "a_endPosition");
context.timeLoc = Shader_GetUniformLocation(shader, "u_time");
context.centerPositionLoc = Shader_GetUniformLocation(shader, "u_centerPosition");
context.colorLoc = Shader_GetUniformLocation(shader, "u_color");
context.samplerLoc = Shader_GetUniformLocation(shader, "s_texture");
Shader_Enable(shader);
glClearColor(0.1f, 0.1f, 0.1f, 0.0f);
srand((int)time(NULL));
for (i = 0; i < NUM_PARTICLES; i++)
{
float *particleData = &context.particleData[i * PARTICLE_SIZE];
/* lifetime of particle */
(*particleData++) = ((float)(rand() % 10000) / 10000.0f);
/* End position of particle */
(*particleData++) = ((float)(rand() % 10000) / 5000.0f) - 1.0f;
(*particleData++) = ((float)(rand() % 10000) / 5000.0f) - 1.0f;
(*particleData++) = ((float)(rand() % 10000) / 5000.0f) - 1.0f;
/* start position of particle */
(*particleData++) = ((float)(rand() % 10000) / 40000.0f) - 0.125f;
(*particleData++) = ((float)(rand() % 10000) / 40000.0f) - 0.125f;
(*particleData++) = ((float)(rand() % 10000) / 40000.0f) - 0.125f;
}
context.time = 1.0f;
context.textureID = demo5_loadTexture("lightmap.png");
}
