// This function does any needed initialization on the rendering
// context.
void SetupRC()
{
GLint i;
fprintf(stdout, "Vertex Shaders Demo\n\n");
// Make sure required functionality is available!
if (!GLEE_VERSION_2_0 && (!GLEE_ARB_vertex_shader ||
!GLEE_ARB_shader_objects ||
!GLEE_ARB_shading_language_100))
{
fprintf(stderr, "GLSL extensions not available!\n");
Sleep(2000);
exit(0);
}
// Make sure we have multitexture, cube maps, and texenv add!
if (!GLEE_VERSION_1_3 && (!GLEE_ARB_multitexture ||
!GLEE_ARB_texture_cube_map ||
!GLEE_ARB_texture_env_add))
{
fprintf(stderr, "Neither OpenGL 1.3 nor necessary"
" extensions are available!\n");
Sleep(2000);
exit(0);
}
glGetIntegerv(GL_MAX_TEXTURE_SIZE, &maxTexSize);
fprintf(stdout, "Controls:\n");
fprintf(stdout, "\tRight-click for menu\n\n");
fprintf(stdout, "\tR/L arrows\t+/- fog density for \"fog\" shader\n");
fprintf(stdout, "\tR/L arrows\t+/- rotate lights for others shaders\n\n");
fprintf(stdout, "\tx/X\t\tMove +/- in x direction, stretch for \"stretch\" shader\n");
fprintf(stdout, "\ty/Y\t\tMove +/- in y direction, stretch for \"stretch\" shader\n");
fprintf(stdout, "\tz/Z\t\tMove +/- in z direction, stretch for \"stretch\" shader\n\n");
fprintf(stdout, "\tq\t\tExit demo\n\n");
// Black background
glClearColor(0.0f, 0.0f, 0.0f, 1.0f );
// Misc. state
glEnable(GL_DEPTH_TEST);
glDepthFunc(GL_LEQUAL);
glShadeModel(GL_SMOOTH);
glFogfv(GL_FOG_COLOR, fogColor);
glFogi(GL_FOG_MODE, GL_EXP2);
glFogi(GL_FOG_COORD_SRC, GL_FOG_COORD);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
// Texture state
glActiveTexture(GL_TEXTURE3);
glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_ADD);
glBindTexture(GL_TEXTURE_1D, 3);
glTexParameteri(GL_TEXTURE_1D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_1D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_1D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
CreatePowMap(0.25, 0.25, 1.0);
glActiveTexture(GL_TEXTURE2);
glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_ADD);
glBindTexture(GL_TEXTURE_1D, 2);
glTexParameteri(GL_TEXTURE_1D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_1D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_1D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
CreatePowMap(0.25, 1.0, 0.25);
glActiveTexture(GL_TEXTURE1);
glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_ADD);
glBindTexture(GL_TEXTURE_1D, 1);
glTexParameteri(GL_TEXTURE_1D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_1D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_1D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
CreatePowMap(1.0, 0.25, 0.25);
glActiveTexture(GL_TEXTURE0);
glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_ADD);
glBindTexture(GL_TEXTURE_1D, 0);
glTexParameteri(GL_TEXTURE_1D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_1D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_1D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
CreatePowMap(1.0, 1.0, 1.0);
// Load and compile shaders
for (i = 0; i < TOTAL_SHADERS; i++)
{
PrepareShader(i);
}
// Install first shader
glUseProgram(progObj[whichShader]);
}
// This function does any needed initialization on the rendering
// context.
void SetupRC()
{
const GLubyte *version;
GLint i;
fprintf(stdout, "Vertex Blending Demo\n\n");
// Make sure required functionality is available!
if (gltIsExtSupported("GL_ARB_vertex_shader") &&
gltIsExtSupported("GL_ARB_shader_objects") &&
gltIsExtSupported("GL_ARB_shading_language_100"))
{
highLevelAvailable = GL_TRUE;
}
if (gltIsExtSupported("GL_ARB_vertex_program"))
{
lowLevelAvailable = GL_TRUE;
}
if (!lowLevelAvailable && !highLevelAvailable)
{
fprintf(stderr, "Neither vertex shader"
" extension is available!\n");
usleep(2000);
exit(0);
}
// Make sure we have 1.3+, multitexture, cube maps, and texenv add!
version = glGetString(GL_VERSION);
if ( ((version[0] == '1') && ((version[1] != '.') || (version[2] < '3') || (version[2] > '9'))) &&
(!gltIsExtSupported("GL_ARB_multitexture") || !gltIsExtSupported("GL_ARB_texture_env_add")) )
{
fprintf(stderr, "Neither OpenGL 1.3 nor necessary"
" extensions are available!\n");
usleep(2000);
exit(0);
}
glGetIntegerv(GL_MAX_TEXTURE_SIZE, &maxTexSize);
if (lowLevelAvailable)
{
glGenProgramsARB = gltGetExtensionPointer("glGenProgramsARB");
glBindProgramARB = gltGetExtensionPointer("glBindProgramARB");
glProgramStringARB = gltGetExtensionPointer("glProgramStringARB");
glDeleteProgramsARB = gltGetExtensionPointer("glDeleteProgramsARB");
glProgramLocalParameter4fARB = gltGetExtensionPointer("glProgramLocalParameter4fARB");
glProgramLocalParameter4fvARB = gltGetExtensionPointer("glProgramLocalParameter4fvARB");
glVertexAttrib1fARB = gltGetExtensionPointer("glVertexAttrib1fARB");
if (!glGenProgramsARB || !glBindProgramARB ||
!glProgramStringARB || !glDeleteProgramsARB ||
!glProgramLocalParameter4fARB ||
!glProgramLocalParameter4fvARB || !glVertexAttrib1fARB)
{
fprintf(stderr, "Not all entrypoints were available!\n");
usleep(2000);
exit(0);
}
}
if (highLevelAvailable)
{
glCreateShaderObjectARB = gltGetExtensionPointer("glCreateShaderObjectARB");
glCreateProgramObjectARB = gltGetExtensionPointer("glCreateProgramObjectARB");
glAttachObjectARB = gltGetExtensionPointer("glAttachObjectARB");
glDetachObjectARB = gltGetExtensionPointer("glDetachObjectARB");
glDeleteObjectARB = gltGetExtensionPointer("glDeleteObjectARB");
glShaderSourceARB = gltGetExtensionPointer("glShaderSourceARB");
glCompileShaderARB = gltGetExtensionPointer("glCompileShaderARB");
glLinkProgramARB = gltGetExtensionPointer("glLinkProgramARB");
glValidateProgramARB = gltGetExtensionPointer("glValidateProgramARB");
glUseProgramObjectARB = gltGetExtensionPointer("glUseProgramObjectARB");
glGetObjectParameterivARB = gltGetExtensionPointer("glGetObjectParameterivARB");
glGetInfoLogARB = gltGetExtensionPointer("glGetInfoLogARB");
glUniform3fvARB = gltGetExtensionPointer("glUniform3fvARB");
glUniformMatrix3fvARB = gltGetExtensionPointer("glUniformMatrix3fvARB");
glUniformMatrix4fvARB = gltGetExtensionPointer("glUniformMatrix4fvARB");
glVertexAttrib1fARB = gltGetExtensionPointer("glVertexAttrib1fARB");
glGetUniformLocationARB = gltGetExtensionPointer("glGetUniformLocationARB");
glGetAttribLocationARB = gltGetExtensionPointer("glGetAttribLocationARB");
if (!glCreateShaderObjectARB || !glCreateProgramObjectARB ||
!glAttachObjectARB || !glDetachObjectARB || !glDeleteObjectARB ||
!glShaderSourceARB || !glCompileShaderARB || !glLinkProgramARB ||
!glValidateProgramARB || !glUseProgramObjectARB ||
!glGetObjectParameterivARB || !glGetInfoLogARB ||
!glUniformMatrix4fvARB || !glUniformMatrix4fvARB ||
!glUniform3fvARB || !glVertexAttrib1fARB ||
!glGetUniformLocationARB || !glGetAttribLocationARB)
{
fprintf(stderr, "Not all entrypoints were available!\n");
usleep(2000);
exit(0);
}
useHighLevel = GL_TRUE;
}
fprintf(stdout, "Controls:\n");
fprintf(stdout, "\tRight-click for menu\n\n");
fprintf(stdout, "\tL/R arrows\tChange sphere of influence\n");
fprintf(stdout, "\tU/D arrows\tChange angle of forearm\n\n");
fprintf(stdout, "\tx/X\t\tMove +/- in x direction\n");
fprintf(stdout, "\ty/Y\t\tMove +/- in y direction\n");
fprintf(stdout, "\tz/Z\t\tMove +/- in z direction\n\n");
fprintf(stdout, "\tq\t\tExit demo\n\n");
// Black background
glClearColor(0.0f, 0.0f, 0.0f, 1.0f );
// Hidden surface removal
glEnable(GL_DEPTH_TEST);
glDepthFunc(GL_LEQUAL);
// Misc.
glShadeModel(GL_SMOOTH);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
glPointSize(10.0f);
glLineWidth(5.0f);
// Texture state
glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_ADD);
glBindTexture(GL_TEXTURE_1D, 0+1);
glTexParameteri(GL_TEXTURE_1D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_1D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_1D, GL_TEXTURE_WRAP_S, GL_CLAMP);
CreatePowMap(1.0, 1.0, 1.0);
glEnable(GL_TEXTURE_1D);
if (lowLevelAvailable)
{
glGenProgramsARB(TOTAL_SHADERS, ids);
// Low-level will always be enabled, but high-level
// will take precedence if they're both enabled
glEnable(GL_VERTEX_PROGRAM_ARB);
}
// Load and compile low- and high-level shaders
for (i = 0; i < TOTAL_SHADERS; i++)
{
PrepareShader(i);
}
// Install first shader
if (lowLevelAvailable)
{
glBindProgramARB(GL_VERTEX_PROGRAM_ARB, ids[0]);
}
if (useHighLevel)
{
glUseProgramObjectARB(progObj[0]);
}
}
// This function does any needed initialization on the rendering
// context.
void SetupRC()
{
GLint i;
fprintf(stdout, "Vertex Blending Demo\n\n");
// Make sure required functionality is available!
if (!GLEE_VERSION_2_0 && (!GLEE_ARB_vertex_shader ||
!GLEE_ARB_shader_objects ||
!GLEE_ARB_shading_language_100))
{
fprintf(stderr, "GLSL extensions not available!\n");
Sleep(2000);
exit(0);
}
// Make sure we have multitexture, cube maps, and texenv add!
if (!GLEE_VERSION_1_3 && (!GLEE_ARB_multitexture ||
!GLEE_ARB_texture_cube_map ||
!GLEE_ARB_texture_env_add))
{
fprintf(stderr, "Neither OpenGL 1.3 nor necessary"
" extensions are available!\n");
Sleep(2000);
exit(0);
}
glGetIntegerv(GL_MAX_TEXTURE_SIZE, &maxTexSize);
fprintf(stdout, "Controls:\n");
fprintf(stdout, "\tRight-click for menu\n\n");
fprintf(stdout, "\tL/R arrows\tChange sphere of influence\n");
fprintf(stdout, "\tU/D arrows\tChange angle of forearm\n\n");
fprintf(stdout, "\tx/X\t\tMove +/- in x direction\n");
fprintf(stdout, "\ty/Y\t\tMove +/- in y direction\n");
fprintf(stdout, "\tz/Z\t\tMove +/- in z direction\n\n");
fprintf(stdout, "\tq\t\tExit demo\n\n");
// Black background
glClearColor(0.0f, 0.0f, 0.0f, 1.0f );
// Hidden surface removal
glEnable(GL_DEPTH_TEST);
glDepthFunc(GL_LEQUAL);
// Misc.
glShadeModel(GL_SMOOTH);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
glPointSize(10.0f);
glLineWidth(5.0f);
// Texture state
glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_ADD);
glBindTexture(GL_TEXTURE_1D, 0);
glTexParameteri(GL_TEXTURE_1D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_1D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_1D, GL_TEXTURE_WRAP_S, GL_CLAMP);
CreatePowMap(1.0, 1.0, 1.0);
glEnable(GL_TEXTURE_1D);
// Load and compile shaders
for (i = 0; i < TOTAL_SHADERS; i++)
{
PrepareShader(i);
}
// Install first shader
glUseProgram(progObj[0]);
}
