49f2f0917b
Newest toolchain is bitchier, so I wanted to go ahead and clear up all of the warnings from building GLdc and the various examples... 1) Set CMake CXX standard to 14 instead of 11, since CXXFLAGS were enforcing that language standard anyway. 2) Fixed a bunch of strict aliasing violations in immediate.c: glVertex3f. 3) Removed or commented out lots of unused variables. 4) Fixed some "suggested inner braces on initializer" crap. 5) Fixed a bunch of signed vs unsigned pointer assignments. 6) Fixed several printf() warnings from using %d with int32_t (needs to be %ld for long int). 7) Fixed build issue with Nehe20 from not including kos.h for the KOS_ROMDISK macro. 8) Fixed some signed vs unsigned comparison mismatches in C++ template instantiations within clipping tests. 9)
273 lines
9.5 KiB
C
273 lines
9.5 KiB
C
/* DREAMCAST
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*IAN MICHEAL Ported SDL+OPENGL USING SDL[DREAMHAL][GLDC][KOS2.0]2021
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* Cleaned and tested on dreamcast hardware by Ianmicheal
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* This Code Was Created By Pet & Commented/Cleaned Up By Jeff Molofee
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* If You've Found This Code Useful, Please Let Me Know.
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* Visit NeHe Productions At http://nehe.gamedev.net
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*/
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#include <math.h> // Header File For Windows Math Library
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#include <stdio.h> // Header File For Standard Input/Output
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#include <stdint.h>
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#include <stdlib.h>
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#ifdef __DREAMCAST__
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#include <kos.h>
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#endif
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#define FPS 60
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uint32_t waittime = 1000.0f/FPS;
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uint32_t framestarttime = 0;
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int32_t delaytime;
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#ifdef __DREAMCAST__
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extern uint8_t romdisk[];
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KOS_INIT_ROMDISK(romdisk);
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#define IMG_LOGO_PATH "/rd/logo.bmp"
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#define IMG_MASK1_PATH "/rd/mask1.bmp"
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#define IMG_IMAGE1_PATH "/rd/image1.bmp"
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#define IMG_MASK2_PATH "/rd/mask2.bmp"
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#define IMG_IMAGE2_PATH "/rd/image2.bmp"
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#else
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#define IMG_LOGO_PATH "../samples/nehe20/romdisk/logo.bmp"
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#define IMG_MASK1_PATH "../samples/nehe20/romdisk/mask1.bmp"
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#define IMG_IMAGE1_PATH "../samples/nehe20/romdisk/image1.bmp"
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#define IMG_MASK2_PATH "../samples/nehe20/romdisk/mask2.bmp"
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#define IMG_IMAGE2_PATH "../samples/nehe20/romdisk/image2.bmp"
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#endif
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#include "../loadbmp.h"
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/*
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* This Code Was Created By Jeff Molofee 2000
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* And Modified By Giuseppe D'Agata (waveform@tiscalinet.it)
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* If You've Found This Code Useful, Please Let Me Know.
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* Visit My Site At nehe.gamedev.net
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*/
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#include <math.h> // Header File For Windows Math Library
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#include <stdio.h> // Header File For Standard Input/Output
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#include <assert.h>
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#ifdef WIN32
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#define WIN32_LEAN_AND_MEAN
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#include <windows.h>
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#endif
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#if defined(__APPLE__) && defined(__MACH__)
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#include <OpenGL/gl.h> // Header File For The OpenGL32 Library
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#include <OpenGL/glu.h> // Header File For The GLu32 Library
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#elif defined(__DREAMCAST__)
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#include <kos.h>
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#include <GL/gl.h> // Header File For The OpenGL32 Library
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#include <GL/glu.h> // Header File For The GLu32 Library
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#include <GL/glkos.h>
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#else
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#include <GL/gl.h> // Header File For The OpenGL32 Library
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#include <GL/glu.h> // Header File For The GLu32 Library
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#endif
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#define BOOL int
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#define FALSE 0
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#define TRUE 1
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uint8_t* keys; // Array Used For The Keyboard Routine
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BOOL active=TRUE; // Window Active Flag Set To TRUE By Default
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BOOL fullscreen=FALSE; // Fullscreen Flag Set To Fullscreen Mode By Default
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BOOL masking=TRUE; // Masking On/Off
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BOOL mp; // M Pressed?
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BOOL sp; // Space Pressed?
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BOOL scene; // Which Scene To Draw
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GLuint texture[5]; // Storage For Our Five Textures
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GLuint loop; // Generic Loop Variable
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GLfloat roll; // Rolling Texture
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int LoadGLTextures() // Load Bitmaps And Convert To Textures
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{
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int Status=FALSE; // Status Indicator
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Image TextureImage[5];
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if ((ImageLoad(IMG_LOGO_PATH, &TextureImage[0])) && // Logo Texture
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(ImageLoad(IMG_MASK1_PATH, &TextureImage[1])) && // First Mask
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(ImageLoad(IMG_IMAGE1_PATH, &TextureImage[2])) && // First Image
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(ImageLoad(IMG_MASK2_PATH, &TextureImage[3])) && // Second Mask
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(ImageLoad(IMG_IMAGE2_PATH, &TextureImage[4]))) // Second Image
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{
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Status=TRUE; // Set The Status To TRUE
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glGenTextures(5, &texture[0]); // Create Five Textures
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for (loop=0; loop<5; loop++) // Loop Through All 5 Textures
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{
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glBindTexture(GL_TEXTURE_2D, texture[loop]);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
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glTexImage2D(
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GL_TEXTURE_2D, 0, 3,
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TextureImage[loop].sizeX,
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TextureImage[loop].sizeY, 0, GL_RGB, GL_UNSIGNED_BYTE,
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TextureImage[loop].data
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);
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}
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}
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return Status; // Return The Status
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}
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GLvoid ReSizeGLScene(GLsizei width, GLsizei height) // Resize And Initialize The GL Window
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{
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if (height==0) // Prevent A Divide By Zero By
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{
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height=1; // Making Height Equal One
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}
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glViewport(0,0,width,height); // Reset The Current Viewport
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glMatrixMode(GL_PROJECTION); // Select The Projection Matrix
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glLoadIdentity(); // Reset The Projection Matrix
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gluPerspective(45.0f,(GLfloat)width/(GLfloat)height,0.1f,100.0f); // Calculate Window Aspect Ratio
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glMatrixMode(GL_MODELVIEW); // Select The Modelview Matrix
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glLoadIdentity(); // Reset The Modelview Matrix
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}
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int InitGL(GLvoid) // All Setup For OpenGL Goes Here
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{
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if (!LoadGLTextures()) // Jump To Texture Loading Routine
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{
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return FALSE; // If Texture Didn't Load Return FALSE
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}
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glClearColor(0.0f, 0.0f, 0.0f, 0.0f); // Clear The Background Color To Black
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glClearDepth(1.0); // Enables Clearing Of The Depth Buffer
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glEnable(GL_DEPTH_TEST); // Enable Depth Testing
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glShadeModel(GL_SMOOTH); // Enables Smooth Color Shading
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glEnable(GL_TEXTURE_2D); // Enable 2D Texture Mapping
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return TRUE; // Initialization Went OK
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}
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int DrawGLScene(GLvoid) // Here's Where We Do All The Drawing
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{
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glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); // Clear The Screen And The Depth Buffer
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glLoadIdentity(); // Reset The Modelview Matrix
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glTranslatef(0.0f,0.0f,-2.0f); // Move Into The Screen 5 Units
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glBindTexture(GL_TEXTURE_2D, texture[0]); // Select Our Logo Texture
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glBegin(GL_QUADS); // Start Drawing A Textured Quad
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glTexCoord2f(0.0f, -roll+0.0f); glVertex3f(-1.1f, -1.1f, 0.0f); // Bottom Left
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glTexCoord2f(3.0f, -roll+0.0f); glVertex3f( 1.1f, -1.1f, 0.0f); // Bottom Right
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glTexCoord2f(3.0f, -roll+3.0f); glVertex3f( 1.1f, 1.1f, 0.0f); // Top Right
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glTexCoord2f(0.0f, -roll+3.0f); glVertex3f(-1.1f, 1.1f, 0.0f); // Top Left
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glEnd(); // Done Drawing The Quad
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glEnable(GL_BLEND); // Enable Blending
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glDisable(GL_DEPTH_TEST); // Disable Depth Testing
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if (masking) // Is Masking Enabled?
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{
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glBlendFunc(GL_DST_COLOR,GL_ZERO); // Blend Screen Color With Zero (Black)
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}
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if (scene) // Are We Drawing The Second Scene?
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{
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glTranslatef(0.0f,0.0f,-1.0f); // Translate Into The Screen One Unit
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glRotatef(roll*360,0.0f,0.0f,1.0f); // Rotate On The Z Axis 360 Degrees.
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if (masking) // Is Masking On?
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{
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glBindTexture(GL_TEXTURE_2D, texture[3]); // Select The Second Mask Texture
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glBegin(GL_QUADS); // Start Drawing A Textured Quad
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glTexCoord2f(0.0f, 0.0f); glVertex3f(-1.1f, -1.1f, 0.0f); // Bottom Left
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glTexCoord2f(1.0f, 0.0f); glVertex3f( 1.1f, -1.1f, 0.0f); // Bottom Right
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glTexCoord2f(1.0f, 1.0f); glVertex3f( 1.1f, 1.1f, 0.0f); // Top Right
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glTexCoord2f(0.0f, 1.0f); glVertex3f(-1.1f, 1.1f, 0.0f); // Top Left
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glEnd(); // Done Drawing The Quad
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}
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glBlendFunc(GL_ONE, GL_ONE); // Copy Image 2 Color To The Screen
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glBindTexture(GL_TEXTURE_2D, texture[4]); // Select The Second Image Texture
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glBegin(GL_QUADS); // Start Drawing A Textured Quad
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glTexCoord2f(0.0f, 0.0f); glVertex3f(-1.1f, -1.1f, 0.0f); // Bottom Left
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glTexCoord2f(1.0f, 0.0f); glVertex3f( 1.1f, -1.1f, 0.0f); // Bottom Right
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glTexCoord2f(1.0f, 1.0f); glVertex3f( 1.1f, 1.1f, 0.0f); // Top Right
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glTexCoord2f(0.0f, 1.0f); glVertex3f(-1.1f, 1.1f, 0.0f); // Top Left
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glEnd(); // Done Drawing The Quad
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}
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else // Otherwise
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{
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if (masking) // Is Masking On?
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{
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glBindTexture(GL_TEXTURE_2D, texture[1]); // Select The First Mask Texture
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glBegin(GL_QUADS); // Start Drawing A Textured Quad
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glTexCoord2f(roll+0.0f, 0.0f); glVertex3f(-1.1f, -1.1f, 0.0f); // Bottom Left
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glTexCoord2f(roll+4.0f, 0.0f); glVertex3f( 1.1f, -1.1f, 0.0f); // Bottom Right
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glTexCoord2f(roll+4.0f, 4.0f); glVertex3f( 1.1f, 1.1f, 0.0f); // Top Right
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glTexCoord2f(roll+0.0f, 4.0f); glVertex3f(-1.1f, 1.1f, 0.0f); // Top Left
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glEnd(); // Done Drawing The Quad
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}
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glBlendFunc(GL_ONE, GL_ONE); // Copy Image 1 Color To The Screen
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glBindTexture(GL_TEXTURE_2D, texture[2]); // Select The First Image Texture
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glBegin(GL_QUADS); // Start Drawing A Textured Quad
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glTexCoord2f(roll+0.0f, 0.0f); glVertex3f(-1.1f, -1.1f, 0.0f); // Bottom Left
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glTexCoord2f(roll+4.0f, 0.0f); glVertex3f( 1.1f, -1.1f, 0.0f); // Bottom Right
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glTexCoord2f(roll+4.0f, 4.0f); glVertex3f( 1.1f, 1.1f, 0.0f); // Top Right
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glTexCoord2f(roll+0.0f, 4.0f); glVertex3f(-1.1f, 1.1f, 0.0f); // Top Left
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glEnd(); // Done Drawing The Quad
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}
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glEnable(GL_DEPTH_TEST); // Enable Depth Testing
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glDisable(GL_BLEND); // Disable Blending
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roll+=0.002f; // Increase Our Texture Roll Variable
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if (roll>1.0f) // Is Roll Greater Than One
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{
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roll-=1.0f; // Subtract 1 From Roll
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}
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glKosSwapBuffers();
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return TRUE; // Everything Went OK
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}
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int main(int argc, char *argv[])
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{
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glKosInit();
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InitGL();
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ReSizeGLScene(640, 480);
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#ifdef __DREAMCAST__
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maple_device_t* cont = maple_enum_type(0, MAPLE_FUNC_CONTROLLER);
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assert(cont);
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#endif
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while(1) {
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DrawGLScene();
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#ifdef __DREAMCAST__
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cont_state_t* state = (cont_state_t *)maple_dev_status(cont);
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if((state->buttons & CONT_A) && !sp) {
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sp = TRUE;
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scene = !scene;
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} else {
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sp = FALSE;
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}
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if((state->buttons & CONT_B) && !mp) {
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mp = TRUE;
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masking = !masking;
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} else {
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mp = FALSE;
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}
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if(state->buttons & CONT_START) {
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break;
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}
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#endif
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}
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return 0;
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}
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