diff options
| -rw-r--r-- | progs/demos/fogcoord.c | 131 |
1 files changed, 67 insertions, 64 deletions
diff --git a/progs/demos/fogcoord.c b/progs/demos/fogcoord.c index 71199443e96..75a0835d4fe 100644 --- a/progs/demos/fogcoord.c +++ b/progs/demos/fogcoord.c @@ -27,7 +27,9 @@ typedef void (GLAPIENTRYP GLFOGCOORDFEXTPROC) (GLfloat f); typedef void (GLAPIENTRYP GLFOGCOORDPOINTEREXTPROC) (GLenum, GLsizei, const GLvoid *); static GLFOGCOORDFEXTPROC glFogCoordf_ext; +#if ARRAYS static GLFOGCOORDPOINTEREXTPROC glFogCoordPointer_ext; +#endif static GLboolean have_fog_coord; static GLfloat camz; @@ -40,107 +42,108 @@ static GLfloat fogStart = 1.0, fogEnd = 40.0; static GLfloat fogColor[4] = {0.6f, 0.3f, 0.0f, 1.0f}; -void APIENTRY glFogCoordf_nop (GLfloat f) +static void APIENTRY glFogCoordf_nop (GLfloat f) { - (void)f; + (void)f; } static int BuildTexture (const char *filename, GLuint texid[]) { - GLubyte *tex_data; - GLenum tex_format; - GLint tex_width, tex_height; - - tex_data = LoadRGBImage(filename, &tex_width, &tex_height, &tex_format); - if (tex_data == NULL) { - return -1; - } + GLubyte *tex_data; + GLenum tex_format; + GLint tex_width, tex_height; - { - GLint tex_max; - glGetIntegerv(GL_MAX_TEXTURE_SIZE, &tex_max); - if ((tex_width > tex_max) || (tex_height > tex_max)) { - return -1; - } - } + tex_data = LoadRGBImage(filename, &tex_width, &tex_height, &tex_format); + if (tex_data == NULL) { + return -1; + } - glGenTextures(1, texid); + { + GLint tex_max; + glGetIntegerv(GL_MAX_TEXTURE_SIZE, &tex_max); + if ((tex_width > tex_max) || (tex_height > tex_max)) { + return -1; + } + } - glBindTexture(GL_TEXTURE_2D, texid[0]); - glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR); - glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); + glGenTextures(1, texid); + + glBindTexture(GL_TEXTURE_2D, texid[0]); + glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR); + glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); - glTexImage2D(GL_TEXTURE_2D, 0, tex_format, tex_width, tex_height, 0, tex_format, GL_UNSIGNED_BYTE, tex_data); + glTexImage2D(GL_TEXTURE_2D, 0, tex_format, tex_width, tex_height, 0, + tex_format, GL_UNSIGNED_BYTE, tex_data); - return 0; + return 0; } static int SetFogMode (GLint fogMode) { - fogMode &= 3; - switch (fogMode) { - case 0: - glDisable(GL_FOG); + fogMode &= 3; + switch (fogMode) { + case 0: + glDisable(GL_FOG); #if VERBOSE - printf("fog(disable)\n"); + printf("fog(disable)\n"); #endif - break; - case 1: - glEnable(GL_FOG); - glFogi(GL_FOG_MODE, GL_LINEAR); - glFogf(GL_FOG_START, fogStart); - glFogf(GL_FOG_END, fogEnd); + break; + case 1: + glEnable(GL_FOG); + glFogi(GL_FOG_MODE, GL_LINEAR); + glFogf(GL_FOG_START, fogStart); + glFogf(GL_FOG_END, fogEnd); #if VERBOSE - printf("fog(GL_LINEAR, %.2f, %.2f)\n", fogStart, fogEnd); + printf("fog(GL_LINEAR, %.2f, %.2f)\n", fogStart, fogEnd); #endif - break; - case 2: - glEnable(GL_FOG); - glFogi(GL_FOG_MODE, GL_EXP); - glFogf(GL_FOG_DENSITY, fogDensity); + break; + case 2: + glEnable(GL_FOG); + glFogi(GL_FOG_MODE, GL_EXP); + glFogf(GL_FOG_DENSITY, fogDensity); #if VERBOSE - printf("fog(GL_EXP, %.2f)\n", fogDensity); + printf("fog(GL_EXP, %.2f)\n", fogDensity); #endif - break; - case 3: - glEnable(GL_FOG); - glFogi(GL_FOG_MODE, GL_EXP2); - glFogf(GL_FOG_DENSITY, fogDensity); + break; + case 3: + glEnable(GL_FOG); + glFogi(GL_FOG_MODE, GL_EXP2); + glFogf(GL_FOG_DENSITY, fogDensity); #if VERBOSE - printf("fog(GL_EXP2, %.2f)\n", fogDensity); + printf("fog(GL_EXP2, %.2f)\n", fogDensity); #endif - break; - } - return fogMode; + break; + } + return fogMode; } static GLboolean SetFogCoord (GLboolean fogCoord) { - glFogCoordf_ext = glFogCoordf_nop; + glFogCoordf_ext = glFogCoordf_nop; - if (!have_fog_coord) { + if (!have_fog_coord) { #if VERBOSE - printf("fog(GL_FRAGMENT_DEPTH_EXT)%s\n", fogCoord ? " EXT_fog_coord not available!" : ""); + printf("fog(GL_FRAGMENT_DEPTH_EXT)%s\n", fogCoord ? " EXT_fog_coord not available!" : ""); #endif - return GL_FALSE; - } + return GL_FALSE; + } - if (fogCoord) { - glFogCoordf_ext = (GLFOGCOORDFEXTPROC)glutGetProcAddress("glFogCoordfEXT"); - glFogi(GL_FOG_COORDINATE_SOURCE_EXT, GL_FOG_COORDINATE_EXT); + if (fogCoord) { + glFogCoordf_ext = (GLFOGCOORDFEXTPROC)glutGetProcAddress("glFogCoordfEXT"); + glFogi(GL_FOG_COORDINATE_SOURCE_EXT, GL_FOG_COORDINATE_EXT); #if VERBOSE - printf("fog(GL_FOG_COORDINATE_EXT)\n"); + printf("fog(GL_FOG_COORDINATE_EXT)\n"); #endif - } else { - glFogi(GL_FOG_COORDINATE_SOURCE_EXT, GL_FRAGMENT_DEPTH_EXT); + } else { + glFogi(GL_FOG_COORDINATE_SOURCE_EXT, GL_FRAGMENT_DEPTH_EXT); #if VERBOSE - printf("fog(GL_FRAGMENT_DEPTH_EXT)\n"); + printf("fog(GL_FRAGMENT_DEPTH_EXT)\n"); #endif - } - return fogCoord; + } + return fogCoord; } |