diff options
Diffstat (limited to 'sdl/platform.c')
| -rw-r--r-- | sdl/platform.c | 49 |
1 files changed, 23 insertions, 26 deletions
diff --git a/sdl/platform.c b/sdl/platform.c index 55f6555..7542d11 100644 --- a/sdl/platform.c +++ b/sdl/platform.c @@ -13,6 +13,7 @@ /* few light arrays */ GLfloat fNoLight[] = { 0.0f, 0.0f, 0.0f, 0.0f }; GLfloat fLowLight[] = { 0.25f, 0.25f, 0.25f, 1.0f }; +GLfloat fMedLight[] = { 0.50f, 0.50f, 0.50f, 1.0f }; GLfloat fBrightLight[] = { 1.0f, 1.0f, 1.0f, 1.0f }; /* light values and coordinates */ @@ -36,26 +37,29 @@ void setup_opengl(void) glFogf(GL_FOG_END, 20.0f); glFogi(GL_FOG_MODE, GL_LINEAR); /* fog equation */ - glEnable(GL_DEPTH_TEST); /* hidden surface removal */ - glFrontFace(GL_CCW); /* counter clock-wise polygons face out */ - glEnable(GL_CULL_FACE); /* do not calculate inside of a pyramid */ + glEnable(GL_DEPTH_TEST); /* hidden surface removal */ + glFrontFace(GL_CCW); /* counter clock-wise polygons face out */ + glEnable(GL_CULL_FACE); /* do not calculate inside of a pyramid */ + + /* enable lighting */ + glEnable(GL_LIGHTING); + + /* global illumination, ambient RGBA intensity of the entire scene */ + glLightModelfv(GL_LIGHT_MODEL_AMBIENT, fLowLight); /* setup and enable light 0 */ - /* ambient RGBA intensity of the entire scene */ - glLightModelfv(GL_LIGHT_MODEL_AMBIENT, whiteLight); - glLightfv(GL_LIGHT0, GL_AMBIENT, sourceLight); - glLightfv(GL_LIGHT0, GL_DIFFUSE, fBrightLight); + glLightfv(GL_LIGHT0, GL_AMBIENT, fMedLight); + glLightfv(GL_LIGHT0, GL_DIFFUSE, fMedLight); glLightfv(GL_LIGHT0, GL_SPECULAR, fBrightLight); glLightfv(GL_LIGHT0, GL_POSITION, lightPos); - - /* enable lighting */ - glEnable(GL_LIGHTING); glEnable(GL_LIGHT0); /* enable color tracking */ glEnable(GL_COLOR_MATERIAL); - /* set Material properties to follow glColor values */ + /* set material properties to follow glColor values */ + /* all primitives specified after the glMaterial call are affected by the + * last values set, until another call to glMaterial is made */ glColorMaterial(GL_FRONT, GL_AMBIENT_AND_DIFFUSE); glMaterialfv(GL_FRONT, GL_SPECULAR, fBrightLight); glMateriali(GL_FRONT, GL_SHININESS, 128); @@ -67,34 +71,27 @@ void setup_opengl(void) glHint(GL_POINT_SMOOTH_HINT, GL_NICEST); glEnable(GL_LINE_SMOOTH); glHint(GL_LINE_SMOOTH_HINT, GL_NICEST); - /* screws up snowman */ + + /* screws up snowman, this has been replaced by superior multisampling */ //glEnable(GL_POLYGON_SMOOTH); //glHint(GL_POLYGON_SMOOTH_HINT, GL_NICEST); - /* gray background */ - glClearColor(0.5f, 0.5f, 0.5f, 1.0f); - - /* original texture loading used to be here */ - - /* texture filtering, we modify default values since we don't have mipmaps */ - glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR); - glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); - glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE); - glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE); + /* multisampling for polygons, conflicts with *polygon* anti-aliasing */ + glEnable(GL_MULTISAMPLE); /* how OpenGL combines the colors from texels with the color of the underlying * geometry is controlled by the texture environment mode */ glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE); /* once texture is loaded and enabled, it will applied to every primitive - * that specifies coordinates */ + * that specifies coordinates, ORLY? */ glEnable(GL_TEXTURE_2D); - /* multisampling for polygons, conflicts with anti-aliasing */ - //glEnable(GL_MULTISAMPLE); - /* don't know about this, but why not */ glLightModeli(GL_LIGHT_MODEL_COLOR_CONTROL, GL_SEPARATE_SPECULAR_COLOR); + + /* gray background */ + glClearColor(0.5f, 0.5f, 0.5f, 1.0f); } void setup_sdl(void) |