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SDL_dcvideo.c
479 lines (419 loc) · 11.4 KB
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/*
SDL - Simple DirectMedia Layer
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Copyright (C) 1997-2006 Sam Lantinga
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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Sam Lantinga
slouken@libsdl.org
*/
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#include "SDL_config.h"
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#include "SDL_video.h"
#include "SDL_mouse.h"
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#include "../SDL_sysvideo.h"
#include "../SDL_pixels_c.h"
#include "../../events/SDL_events_c.h"
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#include "SDL_dcvideo.h"
#include "SDL_dcevents_c.h"
#include "SDL_dcmouse_c.h"
#include <dc/video.h>
#include <dc/pvr.h>
/* Initialization/Query functions */
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static int DC_VideoInit(_THIS, SDL_PixelFormat * vformat);
static SDL_Rect **DC_ListModes(_THIS, SDL_PixelFormat * format, Uint32 flags);
static SDL_Surface *DC_SetVideoMode(_THIS, SDL_Surface * current, int width,
int height, int bpp, Uint32 flags);
static int DC_SetColors(_THIS, int firstcolor, int ncolors,
SDL_Color * colors);
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static void DC_VideoQuit(_THIS);
/* Hardware surface functions */
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static int DC_AllocHWSurface(_THIS, SDL_Surface * surface);
static int DC_LockHWSurface(_THIS, SDL_Surface * surface);
static void DC_UnlockHWSurface(_THIS, SDL_Surface * surface);
static void DC_FreeHWSurface(_THIS, SDL_Surface * surface);
static int DC_FlipHWSurface(_THIS, SDL_Surface * surface);
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/* etc. */
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static void DC_UpdateRects(_THIS, int numrects, SDL_Rect * rects);
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/* OpenGL */
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#if SDL_VIDEO_OPENGL
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static void *DC_GL_GetProcAddress(_THIS, const char *proc);
static int DC_GL_LoadLibrary(_THIS, const char *path);
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static int DC_GL_GetAttribute(_THIS, SDL_GLattr attrib, int *value);
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static void DC_GL_SwapBuffers(_THIS);
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#endif
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/* DC driver bootstrap functions */
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static int
DC_Available(void)
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{
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return 1;
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}
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static void
DC_DeleteDevice(SDL_VideoDevice * device)
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{
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SDL_free(device->hidden);
SDL_free(device);
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}
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static SDL_VideoDevice *
DC_CreateDevice(int devindex)
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{
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SDL_VideoDevice *device;
/* Initialize all variables that we clean on shutdown */
device = (SDL_VideoDevice *) SDL_malloc(sizeof(SDL_VideoDevice));
if (device) {
SDL_memset(device, 0, (sizeof *device));
device->hidden = (struct SDL_PrivateVideoData *)
SDL_malloc((sizeof *device->hidden));
}
if ((device == NULL) || (device->hidden == NULL)) {
SDL_OutOfMemory();
if (device) {
SDL_free(device);
}
return (0);
}
SDL_memset(device->hidden, 0, (sizeof *device->hidden));
/* Set the function pointers */
device->VideoInit = DC_VideoInit;
device->ListModes = DC_ListModes;
device->SetVideoMode = DC_SetVideoMode;
device->CreateYUVOverlay = NULL;
device->SetColors = DC_SetColors;
device->UpdateRects = DC_UpdateRects;
device->VideoQuit = DC_VideoQuit;
device->AllocHWSurface = DC_AllocHWSurface;
device->CheckHWBlit = NULL;
device->FillHWRect = NULL;
device->SetHWColorKey = NULL;
device->SetHWAlpha = NULL;
device->LockHWSurface = DC_LockHWSurface;
device->UnlockHWSurface = DC_UnlockHWSurface;
device->FlipHWSurface = DC_FlipHWSurface;
device->FreeHWSurface = DC_FreeHWSurface;
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#if SDL_VIDEO_OPENGL
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device->GL_LoadLibrary = DC_GL_LoadLibrary;
device->GL_GetProcAddress = DC_GL_GetProcAddress;
device->GL_GetAttribute = DC_GL_GetAttribute;
device->GL_MakeCurrent = NULL;
device->GL_SwapBuffers = DC_GL_SwapBuffers;
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#endif
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device->SetCaption = NULL;
device->SetIcon = NULL;
device->IconifyWindow = NULL;
device->GrabInput = NULL;
device->GetWMInfo = NULL;
device->InitOSKeymap = DC_InitOSKeymap;
device->PumpEvents = DC_PumpEvents;
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device->free = DC_DeleteDevice;
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return device;
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}
VideoBootStrap DC_bootstrap = {
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"dcvideo", "Dreamcast Video",
DC_Available, DC_CreateDevice
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};
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int
DC_VideoInit(_THIS, SDL_PixelFormat * vformat)
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{
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/* Determine the screen depth (use default 16-bit depth) */
/* we change this during the SDL_SetVideoMode implementation... */
vformat->BitsPerPixel = 16;
vformat->Rmask = 0x0000f800;
vformat->Gmask = 0x000007e0;
vformat->Bmask = 0x0000001f;
/* We're done! */
return (0);
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}
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const static SDL_Rect RECT_800x600 = { 0, 0, 800, 600 }, RECT_640x480 = {
0, 0, 640, 480}, RECT_320x240 = {
0, 0, 320, 240};
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const static SDL_Rect *vid_modes[] = {
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&RECT_800x600,
&RECT_640x480,
&RECT_320x240,
NULL
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};
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SDL_Rect **
DC_ListModes(_THIS, SDL_PixelFormat * format, Uint32 flags)
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{
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switch (format->BitsPerPixel) {
case 15:
case 16:
return &vid_modes;
case 32:
if (!(flags & SDL_INTERNALOPENGL))
return &vid_modes;
default:
return NULL;
}
// return (SDL_Rect **) -1;
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}
pvr_init_params_t params = {
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/* Enable opaque and translucent polygons with size 16 */
{PVR_BINSIZE_16, PVR_BINSIZE_0, PVR_BINSIZE_16, PVR_BINSIZE_0,
PVR_BINSIZE_16}
,
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/* Vertex buffer size */
512 * 1024
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};
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#if SDL_VIDEO_OPENGL
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static int pvr_inited;
#endif
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SDL_Surface *
DC_SetVideoMode(_THIS, SDL_Surface * current,
int width, int height, int bpp, Uint32 flags)
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{
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int disp_mode, pixel_mode, pitch;
Uint32 Rmask, Gmask, Bmask;
if (width == 320 && height == 240)
disp_mode = DM_320x240;
else if (width == 640 && height == 480)
disp_mode = DM_640x480;
else if (width == 800 && height == 600)
disp_mode = DM_800x608;
else {
SDL_SetError("Couldn't find requested mode in list");
return (NULL);
}
switch (bpp) {
case 15:
pixel_mode = PM_RGB555;
pitch = width * 2;
/* 5-5-5 */
Rmask = 0x00007c00;
Gmask = 0x000003e0;
Bmask = 0x0000001f;
break;
case 16:
pixel_mode = PM_RGB565;
pitch = width * 2;
/* 5-6-5 */
Rmask = 0x0000f800;
Gmask = 0x000007e0;
Bmask = 0x0000001f;
break;
case 24:
bpp = 32;
case 32:
pixel_mode = PM_RGB888;
pitch = width * 4;
Rmask = 0x00ff0000;
Gmask = 0x0000ff00;
Bmask = 0x000000ff;
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#if SDL_VIDEO_OPENGL
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if (!(flags & SDL_INTERNALOPENGL))
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#endif
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break;
default:
SDL_SetError("Couldn't find requested mode in list");
return (NULL);
}
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// if ( bpp != current->format->BitsPerPixel ) {
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if (!SDL_ReallocFormat(current, bpp, Rmask, Gmask, Bmask, 0)) {
return (NULL);
}
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// }
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/* Set up the new mode framebuffer */
current->flags = (SDL_FULLSCREEN | SDL_HWSURFACE);
current->w = width;
current->h = height;
current->pitch = pitch;
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#if SDL_VIDEO_OPENGL
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if (pvr_inited) {
pvr_inited = 0;
pvr_shutdown();
}
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#endif
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vid_set_mode(disp_mode, pixel_mode);
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current->pixels = vram_s;
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#if SDL_VIDEO_OPENGL
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if (flags & SDL_INTERNALOPENGL) {
this->gl_config.driver_loaded = 1;
current->flags = SDL_FULLSCREEN | SDL_INTERNALOPENGL;
current->pixels = NULL;
pvr_inited = 1;
pvr_init(¶ms);
glKosInit();
glKosBeginFrame();
} else
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#endif
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if (flags | SDL_DOUBLEBUF) {
current->flags |= SDL_DOUBLEBUF;
current->pixels = (void *) ((int) current->pixels | 0x400000);
}
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/* We're done */
return (current);
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}
/* We don't actually allow hardware surfaces other than the main one */
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static int
DC_AllocHWSurface(_THIS, SDL_Surface * surface)
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{
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return (-1);
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}
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static void
DC_FreeHWSurface(_THIS, SDL_Surface * surface)
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{
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return;
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}
/* We need to wait for vertical retrace on page flipped displays */
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static int
DC_LockHWSurface(_THIS, SDL_Surface * surface)
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{
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return (0);
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}
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static void
DC_UnlockHWSurface(_THIS, SDL_Surface * surface)
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{
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return;
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}
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static int
DC_FlipHWSurface(_THIS, SDL_Surface * surface)
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{
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if (surface->flags & SDL_DOUBLEBUF) {
vid_set_start((int) surface->pixels & 0xffffff);
surface->pixels = (void *) ((int) surface->pixels ^ 0x400000);
}
return (0);
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}
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static void
DC_UpdateRects(_THIS, int numrects, SDL_Rect * rects)
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{
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/* do nothing. */
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}
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static int
DC_SetColors(_THIS, int firstcolor, int ncolors, SDL_Color * colors)
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{
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/* do nothing of note. */
return (1);
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}
/* Note: If we are terminated, this could be called in the middle of
another SDL video routine -- notably UpdateRects.
*/
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static void
DC_VideoQuit(_THIS)
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{
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#if SDL_VIDEO_OPENGL
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if (pvr_inited) {
pvr_inited = 0;
pvr_shutdown();
}
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#endif
}
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#if SDL_VIDEO_OPENGL
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void
dmyfunc(void)
{
}
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typedef void (*funcptr) ();
const static struct
{
char *name;
funcptr addr;
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} glfuncs[] = {
#define DEF(func) {#func,&func}
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DEF(glBegin), DEF(glBindTexture), DEF(glBlendFunc), DEF(glColor4f),
// DEF(glCopyImageID),
DEF(glDisable),
DEF(glEnable),
DEF(glEnd),
DEF(glFlush),
DEF(glGenTextures),
DEF(glGetString),
DEF(glLoadIdentity),
DEF(glMatrixMode), DEF(glOrtho), DEF(glPixelStorei),
// DEF(glPopAttrib),
// DEF(glPopClientAttrib),
{
"glPopAttrib", &dmyfunc}, {
"glPopClientAttrib", &dmyfunc}, DEF(glPopMatrix),
// DEF(glPushAttrib),
// DEF(glPushClientAttrib),
{
"glPushAttrib", &dmyfunc}, {
"glPushClientAttrib", &dmyfunc},
DEF(glPushMatrix),
DEF(glTexCoord2f),
DEF(glTexEnvf),
DEF(glTexImage2D),
DEF(glTexParameteri),
DEF(glTexSubImage2D), DEF(glVertex2i), DEF(glViewport),
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#undef DEF
};
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static void *
DC_GL_GetProcAddress(_THIS, const char *proc)
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{
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void *ret;
int i;
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ret = glKosGetProcAddress(proc);
if (ret)
return ret;
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for (i = 0; i < sizeof(glfuncs) / sizeof(glfuncs[0]); i++) {
if (SDL_strcmp(proc, glfuncs[i].name) == 0)
return glfuncs[i].addr;
}
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return NULL;
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}
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static int
DC_GL_LoadLibrary(_THIS, const char *path)
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{
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this->gl_config.driver_loaded = 1;
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return 0;
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}
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static int
DC_GL_GetAttribute(_THIS, SDL_GLattr attrib, int *value)
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{
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GLenum mesa_attrib;
int val;
switch (attrib) {
case SDL_GL_RED_SIZE:
val = 5;
break;
case SDL_GL_GREEN_SIZE:
val = 6;
break;
case SDL_GL_BLUE_SIZE:
val = 5;
break;
case SDL_GL_ALPHA_SIZE:
val = 0;
break;
case SDL_GL_DOUBLEBUFFER:
val = 1;
break;
case SDL_GL_DEPTH_SIZE:
val = 16; /* or 32? */
break;
case SDL_GL_STENCIL_SIZE:
val = 0;
break;
case SDL_GL_ACCUM_RED_SIZE:
val = 0;
break;
case SDL_GL_ACCUM_GREEN_SIZE:
val = 0;
case SDL_GL_ACCUM_BLUE_SIZE:
val = 0;
break;
case SDL_GL_ACCUM_ALPHA_SIZE:
val = 0;
break;
default:
return -1;
}
*value = val;
return 0;
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}
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static void
DC_GL_SwapBuffers(_THIS)
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{
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glKosFinishFrame();
glKosBeginFrame();
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}
#endif
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/* vi: set ts=4 sw=4 expandtab: */