| 1 |
#include <cstdlib> |
| 2 |
#include <cstring> |
| 3 |
|
| 4 |
#include <algorithm> |
| 5 |
|
| 6 |
#include "opengl.h" |
| 7 |
#include "material.h" |
| 8 |
#include "util.h" |
| 9 |
|
| 10 |
material::~material () |
| 11 |
{ |
| 12 |
} |
| 13 |
|
| 14 |
void |
| 15 |
simple_material::enable () |
| 16 |
{ |
| 17 |
glMaterialfv (GL_FRONT, GL_DIFFUSE, (GLfloat *) & diffuse); |
| 18 |
glMaterialfv (GL_FRONT, GL_SPECULAR, (GLfloat *) & specular); |
| 19 |
glMaterialfv (GL_FRONT, GL_EMISSION, (GLfloat *) & emission); |
| 20 |
glMaterialf (GL_FRONT, GL_SHININESS, shininess); |
| 21 |
} |
| 22 |
|
| 23 |
void |
| 24 |
simple_material::disable () |
| 25 |
{ |
| 26 |
} |
| 27 |
|
| 28 |
GLuint |
| 29 |
texture::load_texture (SDL_Surface * surface, GLfloat * tex2oord) |
| 30 |
{ |
| 31 |
GLuint name; |
| 32 |
int w, h; |
| 33 |
SDL_Surface *image; |
| 34 |
SDL_Rect area; |
| 35 |
Uint32 saved_flags; |
| 36 |
Uint8 saved_alpha; |
| 37 |
|
| 38 |
/* Use the surface width and height expanded to powers of 2 */ |
| 39 |
//w = power_of_two (surface->w); |
| 40 |
//h = power_of_two (surface->h); |
| 41 |
w = power_of_two (surface->w); |
| 42 |
h = power_of_two (surface->h); |
| 43 |
tex2oord[0] = 0.0f; /* Min X */ |
| 44 |
tex2oord[1] = 0.0f; /* Min Y */ |
| 45 |
tex2oord[2] = (GLfloat) surface->w / w; /* Max X */ |
| 46 |
tex2oord[3] = (GLfloat) surface->h / h; /* Max Y */ |
| 47 |
|
| 48 |
image = SDL_CreateRGBSurface (SDL_SWSURFACE, w, h, 32, |
| 49 |
#if SDL_BYTEORDER == SDL_LIL_ENDIAN /* OpenGL RGBA masks */ |
| 50 |
0x000000FF, 0x0000FF00, 0x00FF0000, 0xFF000000 |
| 51 |
#else |
| 52 |
0xFF000000, 0x00FF0000, 0x0000FF00, 0x000000FF |
| 53 |
#endif |
| 54 |
); |
| 55 |
|
| 56 |
if (image == NULL) |
| 57 |
return 0; |
| 58 |
|
| 59 |
/* Save the alpha blending attributes */ |
| 60 |
saved_flags = surface->flags & (SDL_SRCALPHA | SDL_RLEACCELOK); |
| 61 |
saved_alpha = surface->format->alpha; |
| 62 |
if ((saved_flags & SDL_SRCALPHA) == SDL_SRCALPHA) |
| 63 |
SDL_SetAlpha (surface, 0, 0); |
| 64 |
|
| 65 |
/* Copy the surface into the GL texture image */ |
| 66 |
area.x = 0; |
| 67 |
area.y = 0; |
| 68 |
area.w = surface->w; |
| 69 |
area.h = surface->h; |
| 70 |
SDL_BlitSurface (surface, &area, image, &area); |
| 71 |
|
| 72 |
/* Restore the alpha blending attributes */ |
| 73 |
if ((saved_flags & SDL_SRCALPHA) == SDL_SRCALPHA) |
| 74 |
SDL_SetAlpha (surface, saved_flags, saved_alpha); |
| 75 |
|
| 76 |
/* Create an OpenGL texture for the image */ |
| 77 |
glGenTextures (1, &name); |
| 78 |
glBindTexture (GL_TEXTURE_2D, name); |
| 79 |
glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); |
| 80 |
glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR); |
| 81 |
glTexParameteri (GL_TEXTURE_2D, GL_GENERATE_MIPMAP, GL_TRUE); |
| 82 |
glTexImage2D (GL_TEXTURE_2D, |
| 83 |
0, |
| 84 |
GL_RGBA, w, h, 0, GL_RGBA, GL_UNSIGNED_BYTE, image->pixels); |
| 85 |
SDL_FreeSurface (image); /* No longer needed */ |
| 86 |
|
| 87 |
return name; |
| 88 |
} |
| 89 |
|
| 90 |
test_material::test_material () |
| 91 |
: tex ("textures/osama.jpg"), texvar (tex.name) |
| 92 |
{ |
| 93 |
using namespace shader; |
| 94 |
|
| 95 |
p.vsh->start (); |
| 96 |
|
| 97 |
temp_4f lightpos; |
| 98 |
temp_4f wpos; |
| 99 |
|
| 100 |
//lightpos = shader::vec4 (0, 10, 0, 1); |
| 101 |
vout.position = shader::gl.model_view_projection_matrix * vin.vertex; |
| 102 |
vout.tex_coord[0] = vin.tex_coord[0]; |
| 103 |
//vout.tex_coord[1] = normalize (lightpos - wpos); |
| 104 |
//vout.tex_coord[2] = normalize (wpos); |
| 105 |
//vout.tex_coord[3] = normalize (xyz (gl.model_view_matrix_inverse_transpose) * vin.normal); |
| 106 |
//vout.tex_coord[4] = normalize (xyz (gl.projection_matrix_inverse_transpose) - wpos); |
| 107 |
|
| 108 |
p.vsh->end (); |
| 109 |
p.vsh->compile (); |
| 110 |
|
| 111 |
fragment_shader fsh; |
| 112 |
|
| 113 |
p.fsh->start (); |
| 114 |
|
| 115 |
xyz(fout.frag_color) = texture_2d (texvar, fin.tex_coord[0]); |
| 116 |
|
| 117 |
p.fsh->end (); |
| 118 |
p.fsh->compile (); |
| 119 |
p.link (); |
| 120 |
} |
| 121 |
|
| 122 |
void test_material::enable () |
| 123 |
{ |
| 124 |
p.enable (); |
| 125 |
texvar->enable (); |
| 126 |
} |
| 127 |
|
| 128 |
void test_material::disable () |
| 129 |
{ |
| 130 |
texvar->disable (); |
| 131 |
p.disable (); |
| 132 |
} |
| 133 |
|
