//static variables
GLuint ab=0;
#define BUFFER_OFFSET(i) ((char *)NULL + (i))
int main ()
{
int i=0;
int ab=0;
float clr[3] = {0.0f, 0.3f, 0.6f};
float add[3] = {0.001f, 0.002f, 0.003f};
unsigned int position_attrib_idx = 0;
//GL stuff
SShader vertexShader;
SShader fragmentShader;
SShaderProgram program;
CPlatform platform;
Create(&platform, "", 2, 1, 1024, 768, 8, 8, 8, 8, 16, 8, 0);
//-------------------
//setup the shaders
CreateShader(&vertexShader, VERT, &pVertexShader, 1);
CreateShader(&fragmentShader, FRAG, &pFragmentShader, 1);
CreateShaderProgram(&program);
AddShaderToProgram(&program, &vertexShader);
AddShaderToProgram(&program, &fragmentShader);
SetAttributeLocation(&program, position_attrib_idx, "position"); //needs to be calleb before linking
LinkShaderProgram(&program);
glGenBuffers(1, &ab); //array buffer
//fill buffers
glBindBuffer(GL_ARRAY_BUFFER, ab);
glBufferData(GL_ARRAY_BUFFER, sizeof(vertices), vertices, GL_STATIC_DRAW);
//-------------------
//tell openGL how to interperet the data
glBindBuffer(GL_ARRAY_BUFFER, ab);
glEnableVertexAttribArray(0);
glVertexAttribPointer(position_attrib_idx, 3, GL_FLOAT, GL_FALSE, 12, 0);
//set rendering states
glEnable(GL_CULL_FACE);
glClearColor(0, 0, 0, 0.0f); //alpha to 0, should make triangle appear over console
Start(&program); //even when glDeleteProgram is called the program won't be deleted until it is out of use
while (!IS_BUTTON_PRESSED(platform.m_keyboard.key[KB_ESC]))
{
Tick(&platform);
glClear(GL_COLOR_BUFFER_BIT);
SetVec3ByName(&program, "uColour", clr);
glDrawArrays( GL_TRIANGLES, 0, 3);
SwapBuffers(&platform);
for(i=0;i<3;i++)
{
clr[i]+=add[i];
if(clr[i]>1.0f)add[i]*=-1.0f;
if(clr[i]<0.0f)add[i]*=-1.0f;
}
}
Stop();
static void SetupShaders(void){
int got = 0;
SShader vtxTxShdr, frgTxShdr;
SShader vtxClrShdr, frgClrShdr;
SShader vtxLightShdr, frgLightShdr;
const char *pDVertStr[3] = {0,0,0}, *pDFragStr[3] = {0,0,0};
glswInit();
glswSetPath("./id1/shaders/", ".glsl");
glswAddDirectiveToken("Shared", HASH_DEFINE_VALUE(TRANSFORM_UBO_BINDING));
glswAddDirectiveToken("Shared", HASH_DEFINE_VALUE(LIGHT_UBO_BINDING));
glswAddDirectiveToken("Shared", HASH_DEFINE_VALUE(MAX_DIRECTION_LIGHTS));
glswAddDirectiveToken("Shared", HASH_DEFINE_VALUE(MAX_POINT_LIGHTS));
glswAddDirectiveToken("Shared", HASH_DEFINE_VALUE(MAX_SPOT_LIGHTS));
glswAddDirectiveToken("Shared", HASH_DEFINE_VALUE(TEXT_TEX_UNIT));
glswAddDirectiveToken("Vertex", HASH_DEFINE_VALUE(POSITION_LOCATION));
glswAddDirectiveToken("Vertex", HASH_DEFINE_VALUE(COLOUR_LOCATION));
glswAddDirectiveToken("Vertex", HASH_DEFINE_VALUE(NORMAL_LOCATION));
glswAddDirectiveToken("Vertex", HASH_DEFINE_VALUE(JOINT_WEIGHT_LOCATION));
glswAddDirectiveToken("Vertex", HASH_DEFINE_VALUE(JOINT_INDEX_LOCATION));
glswAddDirectiveToken("Vertex", HASH_DEFINE_VALUE(UV_LOCATION0));
glswAddDirectiveToken("Vertex", HASH_DEFINE_VALUE(UV_LOCATION1));
glswAddDirectiveToken("Vertex", HASH_DEFINE_VALUE(TEXT_LOCATION));
//glswAddDirectiveToken("Shared", HASH_DEFINE_VALUE(SKINNING_TEXTURE_BINDING));
//glswAddDirectiveToken("Shared", HASH_DEFINE_VALUE(WEIGHTS_PER_VERTEX));
//glswAddDirectiveToken("Shared", HASH_DEFINE(TEXTURE_BUFFER_SKINNING));
//glswAddDirectiveToken("Shared", HASH_DEFINE_VALUE(RESERVED_JOINTS));
//shader (TEXTURED)
got = glswGetShadersAlt("shaders.Header.Vertex+shaders.Shared+shaders.SimpleVertexTextured", pDVertStr, 3);
CreateShader(&vtxTxShdr, VERT, pDVertStr, got);
got = glswGetShadersAlt("shaders.Header.Fragment+shaders.Shared+shaders.SimpleFragmentTextured", pDFragStr, 3);
CreateShader(&frgTxShdr, FRAG, pDFragStr, got);
CreateShaderProgram(&texture_shader);
AddShaderToProgram(&texture_shader,&vtxTxShdr);
AddShaderToProgram(&texture_shader,&frgTxShdr);
LinkShaderProgram(&texture_shader);
//shader (COLOUR)
got = glswGetShadersAlt("shaders.Header.Vertex+shaders.Shared+shaders.SimpleVertexColoured", pDVertStr, 3);
CreateShader(&vtxClrShdr, VERT, pDVertStr, got);
got = glswGetShadersAlt("shaders.Header.Fragment+shaders.Shared+shaders.SimpleFragmentColoured", pDFragStr, 3);
CreateShader(&frgClrShdr, FRAG, pDFragStr, got);
CreateShaderProgram(&colour_shader);
AddShaderToProgram(&colour_shader,&vtxClrShdr);
AddShaderToProgram(&colour_shader,&frgClrShdr);
LinkShaderProgram(&colour_shader);
//shader (LIGHTMAP)
got = glswGetShadersAlt("shaders.Header.Vertex+shaders.Shared+shaders.SimpleVertexLightmap", pDVertStr, 3);
CreateShader(&vtxLightShdr, VERT, pDVertStr, got);
got = glswGetShadersAlt("shaders.Header.Fragment+shaders.Shared+shaders.SimpleFragmentLightmap", pDFragStr, 3);
CreateShader(&frgLightShdr, FRAG, pDFragStr, got);
CreateShaderProgram(&light_map_shader);
AddShaderToProgram(&light_map_shader, &vtxLightShdr);
AddShaderToProgram(&light_map_shader, &frgLightShdr);
LinkShaderProgram(&light_map_shader);
//this will delete them after we have deleted the program associated with them
DeleteShader(&vtxTxShdr);
DeleteShader(&frgTxShdr);
DeleteShader(&vtxClrShdr);
DeleteShader(&frgClrShdr);
DeleteShader(&vtxLightShdr);
DeleteShader(&frgLightShdr);
}
