mrq/GLdc
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Add more samples

Browse Source
This commit is contained in:
Luke Benstead 2021-04-07 20:44:35 +01:00
parent 1d14478802
commit 566fc8134d
9 changed files with 111 additions and 91 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

11
CMakeLists.txt
View File

@ -54,4 +54,15 @@ add_executable(depth_funcs_ortho samples/depth_funcs_ortho/main.c)
add_executable(lights samples/lights/main.c) add_executable(lights samples/lights/main.c)
add_executable(mipmap samples/mipmap/main.c) add_executable(mipmap samples/mipmap/main.c)
add_executable(multitexture_arrays samples/multitexture_arrays/main.c samples/multitexture_arrays/pvr-texture.c) add_executable(multitexture_arrays samples/multitexture_arrays/main.c samples/multitexture_arrays/pvr-texture.c)
add_executable(nehe02de samples/nehe02de/main.c)
add_executable(nehe06 samples/nehe06/main.c)
add_executable(paletted samples/paletted/main.c)
add_executable(paletted_pcx samples/paletted_pcx/main.c)
add_executable(polygon_offset samples/polygon_offset/main.c)
add_executable(zclip samples/zclip/main.c)
add_executable(zclip_triangle samples/zclip_triangle/main.c)
add_executable(zclip_trianglestrip samples/zclip_trianglestrip/main.c)
if(PLATFORM_DREAMCAST)
add_executable(polymark samples/polymark/main.c)
endif()

6
samples/nehe02de/main.c
View File

@ -1,6 +1,6 @@
#include "gl.h" #include "GL/gl.h"
#include "glu.h" #include "GL/glu.h"
#include "glkos.h" #include "GL/glkos.h"
/* A general OpenGL initialization function. Sets all of the initial parameters. */ /* A general OpenGL initialization function. Sets all of the initial parameters. */
void InitGL(int Width, int Height) // We call this right after our OpenGL window is created. void InitGL(int Width, int Height) // We call this right after our OpenGL window is created.

12
samples/nehe06/main.c
View File

@ -1,10 +1,14 @@
#include <stdio.h> #include <stdio.h>
#include <stdint.h>
#include <stdlib.h>
#include <stdio.h>
#include "gl.h" #include "GL/gl.h"
#include "glu.h" #include "GL/glu.h"
#include "glkos.h" #include "GL/glext.h"
#include "GL/glkos.h"
extern uint8 romdisk[]; extern uint8_t romdisk[];
KOS_INIT_ROMDISK(romdisk); KOS_INIT_ROMDISK(romdisk);
/* floats for x rotation, y rotation, z rotation */ /* floats for x rotation, y rotation, z rotation */

11
samples/paletted/main.c
View File

@ -1,13 +1,14 @@
#include <stdio.h> #include <stdio.h>
#include <string.h> #include <string.h>
#include <stdlib.h> #include <stdlib.h>
#include <stdint.h>
#include "gl.h" #include "GL/gl.h"
#include "glext.h" #include "GL/glext.h"
#include "glu.h" #include "GL/glu.h"
#include "glkos.h" #include "GL/glkos.h"
extern uint8 romdisk[]; extern uint8_t romdisk[];
KOS_INIT_ROMDISK(romdisk); KOS_INIT_ROMDISK(romdisk);
/* floats for x rotation, y rotation, z rotation */ /* floats for x rotation, y rotation, z rotation */

10
samples/paletted_pcx/main.c
View File

@ -4,12 +4,12 @@
#include <stdint.h> #include <stdint.h>
#include <assert.h> #include <assert.h>
#include "gl.h" #include "GL/gl.h"
#include "glext.h" #include "GL/glu.h"
#include "glu.h" #include "GL/glext.h"
#include "glkos.h" #include "GL/glkos.h"
extern uint8 romdisk[]; extern uint8_t romdisk[];
KOS_INIT_ROMDISK(romdisk); KOS_INIT_ROMDISK(romdisk);
/* floats for x rotation, y rotation, z rotation */ /* floats for x rotation, y rotation, z rotation */

11
samples/polygon_offset/main.c
View File

@ -1,12 +1,13 @@
#include <kos.h>
typedef enum typedef enum
{ {
false, false,
true true
} bool; } bool;
#include "gl.h"
#include "glu.h" #include "GL/gl.h"
#include "glkos.h" #include "GL/glu.h"
#include "GL/glkos.h"
/* A general OpenGL initialization function. Sets all of the initial parameters. */ /* A general OpenGL initialization function. Sets all of the initial parameters. */
void InitGL(int Width, int Height) // We call this right after our OpenGL window is created. void InitGL(int Width, int Height) // We call this right after our OpenGL window is created.
@ -96,6 +97,7 @@ void drawPolygon()
int frames = 0; int frames = 0;
void check_input() void check_input()
{ {
#ifdef __DREAMCAST__
maple_device_t *cont; maple_device_t *cont;
cont_state_t *state; cont_state_t *state;
@ -117,6 +119,7 @@ void check_input()
} }
} }
} }
#endif
} }
/* The main drawing function. */ /* The main drawing function. */

129
samples/zclip/main.c
View File

@ -1,13 +1,14 @@
#include <stdio.h> #include <stdio.h>
#include <string.h> #include <string.h>
#include <stdlib.h> #include <stdlib.h>
#include <stdint.h>
#include "gl.h" #include "GL/gl.h"
#include "glext.h" #include "GL/glu.h"
#include "glu.h" #include "GL/glext.h"
#include "glkos.h" #include "GL/glkos.h"
extern uint8 romdisk[]; extern uint8_t romdisk[];
KOS_INIT_ROMDISK(romdisk); KOS_INIT_ROMDISK(romdisk);
@ -29,85 +30,85 @@ TextureImage lightmap;
GLboolean LoadTGA(TextureImage *texture, const char *filename) // Loads A TGA File Into Memory GLboolean LoadTGA(TextureImage *texture, const char *filename) // Loads A TGA File Into Memory
{ {
GLubyte TGAheader[12]={0,0,2,0,0,0,0,0,0,0,0,0}; // Uncompressed TGA Header GLubyte TGAheader[12]={0,0,2,0,0,0,0,0,0,0,0,0}; // Uncompressed TGA Header
GLubyte TGAcompare[12]; // Used To Compare TGA Header GLubyte TGAcompare[12]; // Used To Compare TGA Header
GLubyte header[6]; // First 6 Useful Bytes From The Header GLubyte header[6]; // First 6 Useful Bytes From The Header
GLuint bytesPerPixel; // Holds Number Of Bytes Per Pixel Used In The TGA File GLuint bytesPerPixel; // Holds Number Of Bytes Per Pixel Used In The TGA File
GLuint imageSize; // Used To Store The Image Size When Setting Aside Ram GLuint imageSize; // Used To Store The Image Size When Setting Aside Ram
GLuint temp; // Temporary Variable GLuint temp; // Temporary Variable
GLuint type=GL_RGBA; // Set The Default GL Mode To RBGA (32 BPP) GLuint type=GL_RGBA; // Set The Default GL Mode To RBGA (32 BPP)
FILE *file = fopen(filename, "rb"); // Open The TGA File FILE *file = fopen(filename, "rb"); // Open The TGA File
if( file==NULL || // Does File Even Exist? if( file==NULL || // Does File Even Exist?
fread(TGAcompare,1,sizeof(TGAcompare),file)!=sizeof(TGAcompare) || // Are There 12 Bytes To Read? fread(TGAcompare,1,sizeof(TGAcompare),file)!=sizeof(TGAcompare) || // Are There 12 Bytes To Read?
memcmp(TGAheader,TGAcompare,sizeof(TGAheader))!=0 || // Does The Header Match What We Want? memcmp(TGAheader,TGAcompare,sizeof(TGAheader))!=0 || // Does The Header Match What We Want?
fread(header,1,sizeof(header),file)!=sizeof(header)) // If So Read Next 6 Header Bytes fread(header,1,sizeof(header),file)!=sizeof(header)) // If So Read Next 6 Header Bytes
{ {
if (file == NULL) { // Did The File Even Exist? *Added Jim Strong* if (file == NULL) { // Did The File Even Exist? *Added Jim Strong*
fprintf(stderr, "Missing file\n"); fprintf(stderr, "Missing file\n");
return GL_FALSE; // Return False return GL_FALSE; // Return False
} else } else
{ {
fprintf(stderr, "Invalid format\n"); fprintf(stderr, "Invalid format\n");
fclose(file); // If Anything Failed, Close The File fclose(file); // If Anything Failed, Close The File
return GL_FALSE; // Return False return GL_FALSE; // Return False
} }
} }
texture->width = header[1] * 256 + header[0]; // Determine The TGA Width (highbyte*256+lowbyte) texture->width = header[1] * 256 + header[0]; // Determine The TGA Width (highbyte*256+lowbyte)
texture->height = header[3] * 256 + header[2]; // Determine The TGA Height (highbyte*256+lowbyte) texture->height = header[3] * 256 + header[2]; // Determine The TGA Height (highbyte*256+lowbyte)
if( texture->width <=0 || // Is The Width Less Than Or Equal To Zero if( texture->width <=0 || // Is The Width Less Than Or Equal To Zero
texture->height <=0 || // Is The Height Less Than Or Equal To Zero texture->height <=0 || // Is The Height Less Than Or Equal To Zero
(header[4]!=24 && header[4]!=32)) // Is The TGA 24 or 32 Bit? (header[4]!=24 && header[4]!=32)) // Is The TGA 24 or 32 Bit?
{ {
fprintf(stderr, "Wrong format\n"); fprintf(stderr, "Wrong format\n");
fclose(file); // If Anything Failed, Close The File fclose(file); // If Anything Failed, Close The File
return GL_FALSE; // Return False return GL_FALSE; // Return False
} }
texture->bpp = header[4]; // Grab The TGA's Bits Per Pixel (24 or 32) texture->bpp = header[4]; // Grab The TGA's Bits Per Pixel (24 or 32)
bytesPerPixel = texture->bpp/8; // Divide By 8 To Get The Bytes Per Pixel bytesPerPixel = texture->bpp/8; // Divide By 8 To Get The Bytes Per Pixel
imageSize = texture->width*texture->height*bytesPerPixel; // Calculate The Memory Required For The TGA Data imageSize = texture->width*texture->height*bytesPerPixel; // Calculate The Memory Required For The TGA Data
texture->imageData=(GLubyte *)malloc(imageSize); // Reserve Memory To Hold The TGA Data texture->imageData=(GLubyte *)malloc(imageSize); // Reserve Memory To Hold The TGA Data
if( texture->imageData==NULL || // Does The Storage Memory Exist? if( texture->imageData==NULL || // Does The Storage Memory Exist?
fread(texture->imageData, 1, imageSize, file)!=imageSize) // Does The Image Size Match The Memory Reserved? fread(texture->imageData, 1, imageSize, file)!=imageSize) // Does The Image Size Match The Memory Reserved?
{ {
if(texture->imageData!=NULL) // Was Image Data Loaded if(texture->imageData!=NULL) // Was Image Data Loaded
free(texture->imageData); // If So, Release The Image Data free(texture->imageData); // If So, Release The Image Data
fclose(file); // Close The File fclose(file); // Close The File
return GL_FALSE; // Return False return GL_FALSE; // Return False
} }
GLuint i; GLuint i;
for(i = 0; i < (int)imageSize; i += bytesPerPixel) // Loop Through The Image Data for(i = 0; i < (int)imageSize; i += bytesPerPixel) // Loop Through The Image Data
{ // Swaps The 1st And 3rd Bytes ('R'ed and 'B'lue) { // Swaps The 1st And 3rd Bytes ('R'ed and 'B'lue)
temp=texture->imageData[i]; // Temporarily Store The Value At Image Data 'i' temp=texture->imageData[i]; // Temporarily Store The Value At Image Data 'i'
texture->imageData[i] = texture->imageData[i + 2]; // Set The 1st Byte To The Value Of The 3rd Byte texture->imageData[i] = texture->imageData[i + 2]; // Set The 1st Byte To The Value Of The 3rd Byte
texture->imageData[i + 2] = temp; // Set The 3rd Byte To The Value In 'temp' (1st Byte Value) texture->imageData[i + 2] = temp; // Set The 3rd Byte To The Value In 'temp' (1st Byte Value)
} }
fclose (file); // Close The File fclose (file); // Close The File
// Build A Texture From The Data // Build A Texture From The Data
glGenTextures(1, &texture[0].texID); // Generate OpenGL texture IDs glGenTextures(1, &texture[0].texID); // Generate OpenGL texture IDs
glBindTexture(GL_TEXTURE_2D, texture[0].texID); // Bind Our Texture glBindTexture(GL_TEXTURE_2D, texture[0].texID); // Bind Our Texture
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR); // Linear Filtered glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR); // Linear Filtered
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); // Linear Filtered glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); // Linear Filtered
if (texture[0].bpp==24) // Was The TGA 24 Bits if (texture[0].bpp==24) // Was The TGA 24 Bits
{ {
type=GL_RGB; // If So Set The 'type' To GL_RGB type=GL_RGB; // If So Set The 'type' To GL_RGB
} }
glTexImage2D(GL_TEXTURE_2D, 0, type, texture[0].width, texture[0].height, 0, type, GL_UNSIGNED_BYTE, texture[0].imageData); glTexImage2D(GL_TEXTURE_2D, 0, type, texture[0].width, texture[0].height, 0, type, GL_UNSIGNED_BYTE, texture[0].imageData);
return GL_TRUE; // Texture Building Went Ok, Return True return GL_TRUE; // Texture Building Went Ok, Return True
} }
// Load Bitmaps And Convert To Textures // Load Bitmaps And Convert To Textures
void LoadGLTextures() { void LoadGLTextures() {

6
samples/zclip_triangle/main.c
View File

@ -2,9 +2,9 @@
#include <string.h> #include <string.h>
#include <stdlib.h> #include <stdlib.h>
#include "gl.h" #include "GL/gl.h"
#include "glu.h" #include "GL/glu.h"
#include "glkos.h" #include "GL/glkos.h"
/* A general OpenGL initialization function. Sets all of the initial parameters. */ /* A general OpenGL initialization function. Sets all of the initial parameters. */

6
samples/zclip_trianglestrip/main.c
View File

@ -2,9 +2,9 @@
#include <string.h> #include <string.h>
#include <stdlib.h> #include <stdlib.h>
#include "gl.h" #include "GL/gl.h"
#include "glu.h" #include "GL/glu.h"
#include "glkos.h" #include "GL/glkos.h"
/* A general OpenGL initialization function. Sets all of the initial parameters. */ /* A general OpenGL initialization function. Sets all of the initial parameters. */