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Clean up compressed texture constants and code

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This commit is contained in:
Luke Benstead 2018-08-07 20:22:44 +01:00
parent 0b91c20bbd
commit 16d949bfbc
12 changed files with 360 additions and 79 deletions
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1
GL/framebuffer.c
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@ -1,6 +1,7 @@
#include <stdio.h>
#include "private.h"
#include "../include/glkos.h"
#include "../include/glext.h"
typedef struct {
GLuint index;

53
GL/texture.c
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@ -1,7 +1,10 @@
#include "private.h"
#include "../include/glext.h"
#include <stdio.h>
#include "../include/glext.h"
#include "../include/glkos.h"
#define CLAMP_U (1<<1)
#define CLAMP_V (1<<0)
@ -167,7 +170,7 @@ void APIENTRY glTexEnvf(GLenum target, GLenum pname, GLfloat param) {
void APIENTRY glCompressedTexImage2D(GLenum target,
GLint level,
GLenum internalformat,
GLenum internalFormat,
GLsizei width,
GLsizei height,
GLint border,
@ -178,22 +181,24 @@ void APIENTRY glCompressedTexImage2D(GLenum target,
if(target != GL_TEXTURE_2D)
_glKosThrowError(GL_INVALID_ENUM, "glCompressedTexImage2D");
if(level < 0)
if(level < 0 || border)
_glKosThrowError(GL_INVALID_VALUE, "glCompressedTexImage2D");
if(border)
_glKosThrowError(GL_INVALID_VALUE, "glCompressedTexImage2D");
if(internalformat != GL_UNSIGNED_SHORT_5_6_5_VQ_KOS)
if(internalformat != GL_UNSIGNED_SHORT_5_6_5_VQ_TWID_KOS)
if(internalformat != GL_UNSIGNED_SHORT_4_4_4_4_VQ_KOS)
if(internalformat != GL_UNSIGNED_SHORT_4_4_4_4_REV_VQ_TWID_KOS)
if(internalformat != GL_UNSIGNED_SHORT_1_5_5_5_REV_VQ_KOS)
if(internalformat != GL_UNSIGNED_SHORT_1_5_5_5_REV_VQ_TWID_KOS)
_glKosThrowError(GL_INVALID_OPERATION, "glCompressedTexImage2D");
if(TEXTURE_UNITS[ACTIVE_TEXTURE] == NULL)
switch(internalFormat) {
case GL_COMPRESSED_ARGB_1555_VQ_KOS:
case GL_COMPRESSED_ARGB_1555_VQ_TWID_KOS:
case GL_COMPRESSED_ARGB_4444_VQ_KOS:
case GL_COMPRESSED_ARGB_4444_VQ_TWID_KOS:
case GL_COMPRESSED_RGB_565_VQ_KOS:
case GL_COMPRESSED_RGB_565_VQ_TWID_KOS:
break;
default:
_glKosThrowError(GL_INVALID_OPERATION, "glCompressedTexImage2D");
}
if(TEXTURE_UNITS[ACTIVE_TEXTURE] == NULL) {
_glKosThrowError(GL_INVALID_OPERATION, "glCompressedTexImage2D");
}
if(_glKosHasError()) {
_glKosPrintError();
@ -206,8 +211,8 @@ void APIENTRY glCompressedTexImage2D(GLenum target,
active->height = height;
active->mip_map = level;
active->color = _determinePVRFormat(
internalformat,
internalformat /* Doesn't matter (see determinePVRFormat) */
internalFormat,
internalFormat /* Doesn't matter (see determinePVRFormat) */
);
/* Odds are slim new data is same size as old, so free always */
@ -312,21 +317,21 @@ static GLuint _determinePVRFormat(GLint internalFormat, GLenum type) {
/* Compressed and twiddled versions */
case GL_UNSIGNED_SHORT_5_6_5_TWID_KOS:
return PVR_TXRFMT_RGB565 | PVR_TXRFMT_TWIDDLED;
case GL_UNSIGNED_SHORT_5_6_5_VQ_KOS:
case GL_COMPRESSED_RGB_565_VQ_KOS:
return PVR_TXRFMT_RGB565 | PVR_TXRFMT_NONTWIDDLED | PVR_TXRFMT_VQ_ENABLE;
case GL_UNSIGNED_SHORT_5_6_5_VQ_TWID_KOS:
case GL_COMPRESSED_RGB_565_VQ_TWID_KOS:
return PVR_TXRFMT_RGB565 | PVR_TXRFMT_TWIDDLED | PVR_TXRFMT_VQ_ENABLE;
case GL_UNSIGNED_SHORT_4_4_4_4_REV_TWID_KOS:
return PVR_TXRFMT_ARGB4444 | PVR_TXRFMT_TWIDDLED;
case GL_UNSIGNED_SHORT_4_4_4_4_REV_VQ_TWID_KOS:
case GL_COMPRESSED_ARGB_4444_VQ_TWID_KOS:
return PVR_TXRFMT_ARGB4444 | PVR_TXRFMT_TWIDDLED | PVR_TXRFMT_VQ_ENABLE;
case GL_UNSIGNED_SHORT_4_4_4_4_VQ_KOS:
case GL_COMPRESSED_ARGB_4444_VQ_KOS:
return PVR_TXRFMT_ARGB4444 | PVR_TXRFMT_NONTWIDDLED | PVR_TXRFMT_VQ_ENABLE;
case GL_UNSIGNED_SHORT_1_5_5_5_REV_TWID_KOS:
return PVR_TXRFMT_ARGB1555 | PVR_TXRFMT_TWIDDLED;
case GL_UNSIGNED_SHORT_1_5_5_5_REV_VQ_KOS:
case GL_COMPRESSED_ARGB_1555_VQ_KOS:
return PVR_TXRFMT_ARGB1555 | PVR_TXRFMT_NONTWIDDLED | PVR_TXRFMT_VQ_ENABLE;
case GL_UNSIGNED_SHORT_1_5_5_5_REV_VQ_TWID_KOS:
case GL_COMPRESSED_ARGB_1555_VQ_TWID_KOS:
return PVR_TXRFMT_ARGB1555 | PVR_TXRFMT_TWIDDLED | PVR_TXRFMT_VQ_ENABLE;
default:
return 0;
@ -494,7 +499,7 @@ void APIENTRY glTexImage2D(GLenum target, GLint level, GLint internalFormat,
pvr_mem_free(active->data);
active->data = NULL;
}
}
}
GLuint bytes = (width * height * sizeof(GLushort));

18
include/gl.h
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@ -339,24 +339,6 @@ __BEGIN_DECLS
#define GL_UNSIGNED_SHORT_4_4_4_4_REV 0x8365
#define GL_UNSIGNED_SHORT_1_5_5_5_REV 0x8366
/*
* Dreamcast specific compressed + twiddled formats.
* We use constants from the range 0xEEE0 onwards
* to avoid trampling any real GL constants (this is in the middle of the
* any_vendor_future_use range defined in the GL enum.spec file.
*/
#define GL_UNSIGNED_SHORT_5_6_5_TWID_KOS 0xEEE0
#define GL_UNSIGNED_SHORT_1_5_5_5_REV_TWID_KOS 0xEEE2
#define GL_UNSIGNED_SHORT_4_4_4_4_REV_TWID_KOS 0xEEE3
#define GL_UNSIGNED_SHORT_5_6_5_VQ_KOS 0xEEE4
#define GL_UNSIGNED_SHORT_1_5_5_5_REV_VQ_KOS 0xEEE6
#define GL_UNSIGNED_SHORT_4_4_4_4_VQ_KOS 0xEEE7
#define GL_UNSIGNED_SHORT_5_6_5_VQ_TWID_KOS 0xEEE8
#define GL_UNSIGNED_SHORT_1_5_5_5_REV_VQ_TWID_KOS 0xEEEA
#define GL_UNSIGNED_SHORT_4_4_4_4_REV_VQ_TWID_KOS 0xEEEB
#define GL_RED 0x1903
#define GL_GREEN 0x1904
#define GL_BLUE 0x1905

39
include/glext.h
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@ -87,6 +87,45 @@ __BEGIN_DECLS
#define GL_NUM_COMPRESSED_TEXTURE_FORMATS_ARB 0x86A2
#define GL_COMPRESSED_TEXTURE_FORMATS_ARB 0x86A3
#define GL_COLOR_ATTACHMENT0_EXT 0x8CE0
#define GL_COLOR_ATTACHMENT1_EXT 0x8CE1
#define GL_COLOR_ATTACHMENT2_EXT 0x8CE2
#define GL_COLOR_ATTACHMENT3_EXT 0x8CE3
#define GL_COLOR_ATTACHMENT4_EXT 0x8CE4
#define GL_COLOR_ATTACHMENT5_EXT 0x8CE5
#define GL_COLOR_ATTACHMENT6_EXT 0x8CE6
#define GL_COLOR_ATTACHMENT7_EXT 0x8CE7
#define GL_COLOR_ATTACHMENT8_EXT 0x8CE8
#define GL_COLOR_ATTACHMENT9_EXT 0x8CE9
#define GL_COLOR_ATTACHMENT10_EXT 0x8CEA
#define GL_COLOR_ATTACHMENT11_EXT 0x8CEB
#define GL_COLOR_ATTACHMENT12_EXT 0x8CEC
#define GL_COLOR_ATTACHMENT13_EXT 0x8CED
#define GL_COLOR_ATTACHMENT14_EXT 0x8CEE
#define GL_COLOR_ATTACHMENT15_EXT 0x8CEF
#define GL_DEPTH_ATTACHMENT_EXT 0x8D00
#define GL_STENCIL_ATTACHMENT_EXT 0x8D20
#define GL_FRAMEBUFFER_EXT 0x8D40
#define GL_RENDERBUFFER_EXT 0x8D41
#define GL_RENDERBUFFER_WIDTH_EXT 0x8D42
#define GL_RENDERBUFFER_HEIGHT_EXT 0x8D43
#define GL_RENDERBUFFER_INTERNAL_FORMAT_EXT 0x8D44
#define GL_FRAMEBUFFER_COMPLETE_EXT 0x8CD5
#define GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT_EXT 0x8CD6
#define GL_FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT_EXT 0x8CD7
#define GL_FRAMEBUFFER_INCOMPLETE_DRAW_BUFFER_EXT 0x8CDB
#define GL_FRAMEBUFFER_INCOMPLETE_READ_BUFFER_EXT 0x8CDC
#define GL_FRAMEBUFFER_UNSUPPORTED_EXT 0x8CDD
GLAPI void APIENTRY glGenFramebuffersEXT(GLsizei n, GLuint* framebuffers);
GLAPI void APIENTRY glDeleteFramebuffersEXT(GLsizei n, const GLuint* framebuffers);
GLAPI void APIENTRY glBindFramebufferEXT(GLenum target, GLuint framebuffer);
GLAPI void APIENTRY glFramebufferTexture2DEXT(GLenum target, GLenum attachment, GLenum textarget, GLuint texture, GLint level);
GLAPI void APIENTRY glGenerateMipmapEXT(GLenum target);
GLAPI GLenum APIENTRY glCheckFramebufferStatusEXT(GLenum target);
GLAPI GLboolean APIENTRY glIsFramebufferEXT(GLuint framebuffer);
__END_DECLS
#endif /* !__GL_GLEXT_H */

55
include/glkos.h
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@ -5,49 +5,30 @@
__BEGIN_DECLS
/*
* Dreamcast specific compressed + twiddled formats.
* We use constants from the range 0xEEE0 onwards
* to avoid trampling any real GL constants (this is in the middle of the
* any_vendor_future_use range defined in the GL enum.spec file.
*/
#define GL_UNSIGNED_SHORT_5_6_5_TWID_KOS 0xEEE0
#define GL_UNSIGNED_SHORT_1_5_5_5_REV_TWID_KOS 0xEEE2
#define GL_UNSIGNED_SHORT_4_4_4_4_REV_TWID_KOS 0xEEE3
#define GL_NEARZ_CLIPPING_KOS 0xEEFA
#define GL_COMPRESSED_RGB_565_VQ_KOS 0xEEE4
#define GL_COMPRESSED_ARGB_1555_VQ_KOS 0xEEE6
#define GL_COMPRESSED_ARGB_4444_VQ_KOS 0xEEE7
#define GL_COLOR_ATTACHMENT0_EXT 0x8CE0
#define GL_COLOR_ATTACHMENT1_EXT 0x8CE1
#define GL_COLOR_ATTACHMENT2_EXT 0x8CE2
#define GL_COLOR_ATTACHMENT3_EXT 0x8CE3
#define GL_COLOR_ATTACHMENT4_EXT 0x8CE4
#define GL_COLOR_ATTACHMENT5_EXT 0x8CE5
#define GL_COLOR_ATTACHMENT6_EXT 0x8CE6
#define GL_COLOR_ATTACHMENT7_EXT 0x8CE7
#define GL_COLOR_ATTACHMENT8_EXT 0x8CE8
#define GL_COLOR_ATTACHMENT9_EXT 0x8CE9
#define GL_COLOR_ATTACHMENT10_EXT 0x8CEA
#define GL_COLOR_ATTACHMENT11_EXT 0x8CEB
#define GL_COLOR_ATTACHMENT12_EXT 0x8CEC
#define GL_COLOR_ATTACHMENT13_EXT 0x8CED
#define GL_COLOR_ATTACHMENT14_EXT 0x8CEE
#define GL_COLOR_ATTACHMENT15_EXT 0x8CEF
#define GL_DEPTH_ATTACHMENT_EXT 0x8D00
#define GL_STENCIL_ATTACHMENT_EXT 0x8D20
#define GL_FRAMEBUFFER_EXT 0x8D40
#define GL_RENDERBUFFER_EXT 0x8D41
#define GL_RENDERBUFFER_WIDTH_EXT 0x8D42
#define GL_RENDERBUFFER_HEIGHT_EXT 0x8D43
#define GL_RENDERBUFFER_INTERNAL_FORMAT_EXT 0x8D44
#define GL_COMPRESSED_RGB_565_VQ_TWID_KOS 0xEEE8
#define GL_COMPRESSED_ARGB_1555_VQ_TWID_KOS 0xEEEA
#define GL_COMPRESSED_ARGB_4444_VQ_TWID_KOS 0xEEEB
#define GL_NEARZ_CLIPPING_KOS 0xEEFA
#define GL_FRAMEBUFFER_COMPLETE_EXT 0x8CD5
#define GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT_EXT 0x8CD6
#define GL_FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT_EXT 0x8CD7
#define GL_FRAMEBUFFER_INCOMPLETE_DRAW_BUFFER_EXT 0x8CDB
#define GL_FRAMEBUFFER_INCOMPLETE_READ_BUFFER_EXT 0x8CDC
#define GL_FRAMEBUFFER_UNSUPPORTED_EXT 0x8CDD
GLAPI void APIENTRY glKosSwapBuffers();
GLAPI void APIENTRY glGenFramebuffersEXT(GLsizei n, GLuint* framebuffers);
GLAPI void APIENTRY glDeleteFramebuffersEXT(GLsizei n, const GLuint* framebuffers);
GLAPI void APIENTRY glBindFramebufferEXT(GLenum target, GLuint framebuffer);
GLAPI void APIENTRY glFramebufferTexture2DEXT(GLenum target, GLenum attachment, GLenum textarget, GLuint texture, GLint level);
GLAPI void APIENTRY glGenerateMipmapEXT(GLenum target);
GLAPI GLenum APIENTRY glCheckFramebufferStatusEXT(GLenum target);
GLAPI GLboolean APIENTRY glIsFramebufferEXT(GLuint framebuffer);
__END_DECLS

1
samples/Makefile
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@ -11,6 +11,7 @@ all:
$(KOS_MAKE) -C nehe02va all
$(KOS_MAKE) -C nehe03 all
$(KOS_MAKE) -C nehe06 all
$(KOS_MAKE) -C nehe06_vq all
$(KOS_MAKE) -C ortho2d all
$(KOS_MAKE) -C lerabot01 all
$(KOS_MAKE) -C zclip all

29
samples/nehe06_vq/Makefile Normal file
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@ -0,0 +1,29 @@
TARGET = nehe06_vq.elf
OBJS = main.o
all: rm-elf $(TARGET)
include $(KOS_BASE)/Makefile.rules
clean:
-rm -f $(TARGET) $(OBJS) romdisk.*
rm-elf:
-rm -f $(TARGET) romdisk.*
$(TARGET): $(OBJS) romdisk.o
$(KOS_CC) $(KOS_CFLAGS) $(KOS_LDFLAGS) -o $(TARGET) $(KOS_START) \
$(OBJS) romdisk.o $(OBJEXTRA) -lm -lkosutils $(KOS_LIBS)
romdisk.img:
$(KOS_GENROMFS) -f romdisk.img -d romdisk -v
romdisk.o: romdisk.img
$(KOS_BASE)/utils/bin2o/bin2o romdisk.img romdisk romdisk.o
run: $(TARGET)
$(KOS_LOADER) $(TARGET)
dist:
rm -f $(OBJS) romdisk.o romdisk.img
$(KOS_STRIP) $(TARGET)

243
samples/nehe06_vq/main.c Normal file
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@ -0,0 +1,243 @@
#include <stdio.h>
#include "gl.h"
#include "glu.h"
#include "glkos.h"
extern uint8 romdisk[];
KOS_INIT_ROMDISK(romdisk);
/* floats for x rotation, y rotation, z rotation */
float xrot, yrot, zrot;
/* storage for one texture */
int texture[1];
/* Image type - contains height, width, and data */
struct Image {
unsigned long sizeX;
unsigned long sizeY;
char *data;
GLenum internalFormat;
GLboolean mipmapped;
unsigned int dataSize;
};
typedef struct Image Image;
int ImageLoad(char *filename, Image *image) {
FILE* file = NULL;
// make sure the file is there.
if ((file = fopen(filename, "rb")) == NULL)
{
printf("File Not Found : %s\n",filename);
return 0;
}
struct {
char id[4]; // 'DTEX'
short width;
short height;
int type;
int size;
} header;
fread(&header, sizeof(header), 1, file);
GLboolean twiddled = (header.type & (1 << 26)) > 0;
GLboolean compressed = (header.type & (1 << 30)) > 0;
GLboolean mipmapped = (header.type & (1 << 31)) > 0;
GLboolean strided = (header.type & (1 << 25)) > 0;
GLuint format = (header.type >> 27) & 0b111;
image->data = (char *) malloc (header.size);
image->sizeX = header.width;
image->sizeY = header.height;
image->dataSize = header.size;
fread(image->data, image->dataSize, 1, file);
fclose(file);
if(compressed) {
if(twiddled) {
switch(format) {
case 0:
image->internalFormat = GL_COMPRESSED_ARGB_1555_VQ_TWID_KOS;
break;
case 1:
image->internalFormat = GL_COMPRESSED_RGB_565_VQ_TWID_KOS;
break;
case 2:
image->internalFormat = GL_COMPRESSED_ARGB_4444_VQ_TWID_KOS;
break;
default:
fprintf(stderr, "Invalid texture format");
return 0;
}
} else {
switch(format) {
case 0:
image->internalFormat = GL_COMPRESSED_ARGB_1555_VQ_KOS;
break;
case 1:
image->internalFormat = GL_COMPRESSED_RGB_565_VQ_KOS;
break;
case 2:
image->internalFormat = GL_COMPRESSED_ARGB_4444_VQ_KOS;
break;
default:
fprintf(stderr, "Invalid texture format");
return 0;
}
}
} else {
printf("Not a compressed texture");
return 0;
}
// we're done.
return 1;
}
// Load Bitmaps And Convert To Textures
void LoadGLTextures() {
// Load Texture
Image *image1;
// allocate space for texture
image1 = (Image *) malloc(sizeof(Image));
if (image1 == NULL) {
printf("Error allocating space for image");
exit(0);
}
if (!ImageLoad("/rd/NeHe.tex", image1)) {
exit(1);
}
// Create Texture
glGenTextures(1, &texture[0]);
glBindTexture(GL_TEXTURE_2D, texture[0]); // 2d texture (x and y size)
glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MAG_FILTER,GL_LINEAR); // scale linearly when image bigger than texture
glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MIN_FILTER,GL_LINEAR); // scale linearly when image smalled than texture
// 2d texture, level of detail 0 (normal), 3 components (red, green, blue), x size from image, y size from image,
// border 0 (normal), rgb color data, unsigned byte data, and finally the data itself.
glCompressedTexImage2D(
GL_TEXTURE_2D, 0, image1->internalFormat, image1->sizeX, image1->sizeY, 0,
image1->dataSize, image1->data
);
};
/* 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.
{
LoadGLTextures();
glEnable(GL_TEXTURE_2D);
glClearColor(0.0f, 0.0f, 0.0f, 0.0f); // This Will Clear The Background Color To Black
glClearDepth(1.0); // Enables Clearing Of The Depth Buffer
glDepthFunc(GL_LESS); // The Type Of Depth Test To Do
glEnable(GL_DEPTH_TEST); // Enables Depth Testing
glShadeModel(GL_SMOOTH); // Enables Smooth Color Shading
glMatrixMode(GL_PROJECTION);
glLoadIdentity(); // Reset The Projection Matrix
gluPerspective(45.0f,(GLfloat)Width/(GLfloat)Height,0.1f,100.0f); // Calculate The Aspect Ratio Of The Window
glMatrixMode(GL_MODELVIEW);
}
/* The function called when our window is resized (which shouldn't happen, because we're fullscreen) */
void ReSizeGLScene(int Width, int Height)
{
if (Height == 0) // Prevent A Divide By Zero If The Window Is Too Small
Height = 1;
glViewport(0, 0, Width, Height); // Reset The Current Viewport And Perspective Transformation
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
gluPerspective(45.0f,(GLfloat)Width/(GLfloat)Height,0.1f,100.0f);
glMatrixMode(GL_MODELVIEW);
}
/* The main drawing function. */
void DrawGLScene()
{
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); // Clear The Screen And The Depth Buffer
glLoadIdentity(); // Reset The View
glTranslatef(0.0f,0.0f,-5.0f); // move 5 units into the screen.
glRotatef(xrot,1.0f,0.0f,0.0f); // Rotate On The X Axis
glRotatef(yrot,0.0f,1.0f,0.0f); // Rotate On The Y Axis
glRotatef(zrot,0.0f,0.0f,1.0f); // Rotate On The Z Axis
glBindTexture(GL_TEXTURE_2D, texture[0]); // choose the texture to use.
glBegin(GL_QUADS); // begin drawing a cube
// Front Face (note that the texture's corners have to match the quad's corners)
glTexCoord2f(0.0f, 0.0f); glVertex3f(-1.0f, -1.0f, 1.0f); // Bottom Left Of The Texture and Quad
glTexCoord2f(1.0f, 0.0f); glVertex3f( 1.0f, -1.0f, 1.0f); // Bottom Right Of The Texture and Quad
glTexCoord2f(1.0f, 1.0f); glVertex3f( 1.0f, 1.0f, 1.0f); // Top Right Of The Texture and Quad
glTexCoord2f(0.0f, 1.0f); glVertex3f(-1.0f, 1.0f, 1.0f); // Top Left Of The Texture and Quad
// Back Face
glTexCoord2f(1.0f, 0.0f); glVertex3f(-1.0f, -1.0f, -1.0f); // Bottom Right Of The Texture and Quad
glTexCoord2f(1.0f, 1.0f); glVertex3f(-1.0f, 1.0f, -1.0f); // Top Right Of The Texture and Quad
glTexCoord2f(0.0f, 1.0f); glVertex3f( 1.0f, 1.0f, -1.0f); // Top Left Of The Texture and Quad
glTexCoord2f(0.0f, 0.0f); glVertex3f( 1.0f, -1.0f, -1.0f); // Bottom Left Of The Texture and Quad
// Top Face
glTexCoord2f(0.0f, 1.0f); glVertex3f(-1.0f, 1.0f, -1.0f); // Top Left Of The Texture and Quad
glTexCoord2f(0.0f, 0.0f); glVertex3f(-1.0f, 1.0f, 1.0f); // Bottom Left Of The Texture and Quad
glTexCoord2f(1.0f, 0.0f); glVertex3f( 1.0f, 1.0f, 1.0f); // Bottom Right Of The Texture and Quad
glTexCoord2f(1.0f, 1.0f); glVertex3f( 1.0f, 1.0f, -1.0f); // Top Right Of The Texture and Quad
// Bottom Face
glTexCoord2f(1.0f, 1.0f); glVertex3f(-1.0f, -1.0f, -1.0f); // Top Right Of The Texture and Quad
glTexCoord2f(0.0f, 1.0f); glVertex3f( 1.0f, -1.0f, -1.0f); // Top Left Of The Texture and Quad
glTexCoord2f(0.0f, 0.0f); glVertex3f( 1.0f, -1.0f, 1.0f); // Bottom Left Of The Texture and Quad
glTexCoord2f(1.0f, 0.0f); glVertex3f(-1.0f, -1.0f, 1.0f); // Bottom Right Of The Texture and Quad
// Right face
glTexCoord2f(1.0f, 0.0f); glVertex3f( 1.0f, -1.0f, -1.0f); // Bottom Right Of The Texture and Quad
glTexCoord2f(1.0f, 1.0f); glVertex3f( 1.0f, 1.0f, -1.0f); // Top Right Of The Texture and Quad
glTexCoord2f(0.0f, 1.0f); glVertex3f( 1.0f, 1.0f, 1.0f); // Top Left Of The Texture and Quad
glTexCoord2f(0.0f, 0.0f); glVertex3f( 1.0f, -1.0f, 1.0f); // Bottom Left Of The Texture and Quad
// Left Face
glTexCoord2f(0.0f, 0.0f); glVertex3f(-1.0f, -1.0f, -1.0f); // Bottom Left Of The Texture and Quad
glTexCoord2f(1.0f, 0.0f); glVertex3f(-1.0f, -1.0f, 1.0f); // Bottom Right Of The Texture and Quad
glTexCoord2f(1.0f, 1.0f); glVertex3f(-1.0f, 1.0f, 1.0f); // Top Right Of The Texture and Quad
glTexCoord2f(0.0f, 1.0f); glVertex3f(-1.0f, 1.0f, -1.0f); // Top Left Of The Texture and Quad
glEnd(); // done with the polygon.
xrot+=1.5f; // X Axis Rotation
yrot+=1.5f; // Y Axis Rotation
zrot+=1.5f; // Z Axis Rotation
//
// swap buffers to display, since we're double buffered.
glKosSwapBuffers();
}
int main(int argc, char **argv)
{
glKosInit();
InitGL(640, 480);
ReSizeGLScene(640, 480);
while(1) {
DrawGLScene();
}
return 0;
}

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