static void
nv50_clear_render_target(struct pipe_context *pipe,
struct pipe_surface *dst,
const union pipe_color_union *color,
unsigned dstx, unsigned dsty,
unsigned width, unsigned height)
{
struct nv50_context *nv50 = nv50_context(pipe);
struct nouveau_pushbuf *push = nv50->base.pushbuf;
struct nv50_miptree *mt = nv50_miptree(dst->texture);
struct nv50_surface *sf = nv50_surface(dst);
struct nouveau_bo *bo = mt->base.bo;
BEGIN_NV04(push, NV50_3D(CLEAR_COLOR(0)), 4);
PUSH_DATAf(push, color->f[0]);
PUSH_DATAf(push, color->f[1]);
PUSH_DATAf(push, color->f[2]);
PUSH_DATAf(push, color->f[3]);
#if 0
if (MARK_RING(chan, 18, 2))
return;
#endif
BEGIN_NV04(push, NV50_3D(RT_CONTROL), 1);
PUSH_DATA (push, 1);
BEGIN_NV04(push, NV50_3D(RT_ADDRESS_HIGH(0)), 5);
PUSH_DATAh(push, bo->offset + sf->offset);
PUSH_DATA (push, bo->offset + sf->offset);
PUSH_DATA (push, nv50_format_table[dst->format].rt);
PUSH_DATA (push, mt->level[sf->base.u.tex.level].tile_mode);
PUSH_DATA (push, 0);
BEGIN_NV04(push, NV50_3D(RT_HORIZ(0)), 2);
if (nouveau_bo_memtype(bo))
PUSH_DATA(push, sf->width);
else
PUSH_DATA(push, NV50_3D_RT_HORIZ_LINEAR | mt->level[0].pitch);
PUSH_DATA (push, sf->height);
BEGIN_NV04(push, NV50_3D(RT_ARRAY_MODE), 1);
PUSH_DATA (push, 1);
if (!nouveau_bo_memtype(bo)) {
BEGIN_NV04(push, NV50_3D(ZETA_ENABLE), 1);
PUSH_DATA (push, 0);
}
/* NOTE: only works with D3D clear flag (5097/0x143c bit 4) */
BEGIN_NV04(push, NV50_3D(VIEWPORT_HORIZ(0)), 2);
PUSH_DATA (push, (width << 16) | dstx);
PUSH_DATA (push, (height << 16) | dsty);
BEGIN_NV04(push, NV50_3D(CLEAR_BUFFERS), 1);
PUSH_DATA (push, 0x3c);
nv50->dirty |= NV50_NEW_FRAMEBUFFER;
}
void
nv50_clear(struct pipe_context *pipe, unsigned buffers,
const float *rgba, double depth, unsigned stencil)
{
struct nv50_context *nv50 = nv50_context(pipe);
struct nouveau_channel *chan = nv50->screen->base.channel;
struct pipe_framebuffer_state *fb = &nv50->framebuffer;
unsigned i;
const unsigned dirty = nv50->dirty;
uint32_t mode = 0;
/* don't need NEW_BLEND, COLOR_MASK doesn't affect CLEAR_BUFFERS */
nv50->dirty &= NV50_NEW_FRAMEBUFFER;
if (!nv50_state_validate(nv50, 9 + (fb->nr_cbufs * 2)))
return;
if (buffers & PIPE_CLEAR_COLOR && fb->nr_cbufs) {
BEGIN_RING(chan, RING_3D(CLEAR_COLOR(0)), 4);
OUT_RINGf (chan, rgba[0]);
OUT_RINGf (chan, rgba[1]);
OUT_RINGf (chan, rgba[2]);
OUT_RINGf (chan, rgba[3]);
mode =
NV50_3D_CLEAR_BUFFERS_R | NV50_3D_CLEAR_BUFFERS_G |
NV50_3D_CLEAR_BUFFERS_B | NV50_3D_CLEAR_BUFFERS_A;
}
if (buffers & PIPE_CLEAR_DEPTH) {
BEGIN_RING(chan, RING_3D(CLEAR_DEPTH), 1);
OUT_RING (chan, fui(depth));
mode |= NV50_3D_CLEAR_BUFFERS_Z;
}
if (buffers & PIPE_CLEAR_STENCIL) {
BEGIN_RING(chan, RING_3D(CLEAR_STENCIL), 1);
OUT_RING (chan, stencil & 0xff);
mode |= NV50_3D_CLEAR_BUFFERS_S;
}
BEGIN_RING(chan, RING_3D(CLEAR_BUFFERS), 1);
OUT_RING (chan, mode);
for (i = 1; i < fb->nr_cbufs; i++) {
BEGIN_RING(chan, RING_3D(CLEAR_BUFFERS), 1);
OUT_RING (chan, (i << 6) | 0x3c);
}
nv50->dirty = dirty & ~NV50_NEW_FRAMEBUFFER;
}
static void
nv50_clear_render_target(struct pipe_context *pipe,
struct pipe_surface *dst,
const float *rgba,
unsigned dstx, unsigned dsty,
unsigned width, unsigned height)
{
struct nv50_context *nv50 = nv50_context(pipe);
struct nv50_screen *screen = nv50->screen;
struct nouveau_channel *chan = screen->base.channel;
struct nv50_miptree *mt = nv50_miptree(dst->texture);
struct nv50_surface *sf = nv50_surface(dst);
struct nouveau_bo *bo = mt->base.bo;
BEGIN_RING(chan, RING_3D(CLEAR_COLOR(0)), 4);
OUT_RINGf (chan, rgba[0]);
OUT_RINGf (chan, rgba[1]);
OUT_RINGf (chan, rgba[2]);
OUT_RINGf (chan, rgba[3]);
if (MARK_RING(chan, 18, 2))
return;
BEGIN_RING(chan, RING_3D(RT_CONTROL), 1);
OUT_RING (chan, 1);
BEGIN_RING(chan, RING_3D(RT_ADDRESS_HIGH(0)), 5);
OUT_RELOCh(chan, bo, sf->offset, NOUVEAU_BO_VRAM | NOUVEAU_BO_WR);
OUT_RELOCl(chan, bo, sf->offset, NOUVEAU_BO_VRAM | NOUVEAU_BO_WR);
OUT_RING (chan, nv50_format_table[dst->format].rt);
OUT_RING (chan, mt->level[sf->base.u.tex.level].tile_mode << 4);
OUT_RING (chan, 0);
BEGIN_RING(chan, RING_3D(RT_HORIZ(0)), 2);
OUT_RING (chan, sf->width);
OUT_RING (chan, sf->height);
BEGIN_RING(chan, RING_3D(RT_ARRAY_MODE), 1);
OUT_RING (chan, 1);
/* NOTE: only works with D3D clear flag (5097/0x143c bit 4) */
BEGIN_RING(chan, RING_3D(VIEWPORT_HORIZ(0)), 2);
OUT_RING (chan, (width << 16) | dstx);
OUT_RING (chan, (height << 16) | dsty);
BEGIN_RING(chan, RING_3D(CLEAR_BUFFERS), 1);
OUT_RING (chan, 0x3c);
nv50->dirty |= NV50_NEW_FRAMEBUFFER;
}
static void
nvc0_clear_render_target(struct pipe_context *pipe,
struct pipe_surface *dst,
const union pipe_color_union *color,
unsigned dstx, unsigned dsty,
unsigned width, unsigned height)
{
struct nvc0_context *nvc0 = nvc0_context(pipe);
struct nouveau_pushbuf *push = nvc0->base.pushbuf;
struct nv50_surface *sf = nv50_surface(dst);
struct nv04_resource *res = nv04_resource(sf->base.texture);
unsigned z;
if (!PUSH_SPACE(push, 32 + sf->depth))
return;
PUSH_REFN (push, res->bo, res->domain | NOUVEAU_BO_WR);
BEGIN_NVC0(push, NVC0_3D(CLEAR_COLOR(0)), 4);
PUSH_DATAf(push, color->f[0]);
PUSH_DATAf(push, color->f[1]);
PUSH_DATAf(push, color->f[2]);
PUSH_DATAf(push, color->f[3]);
BEGIN_NVC0(push, NVC0_3D(SCREEN_SCISSOR_HORIZ), 2);
PUSH_DATA (push, ( width << 16) | dstx);
PUSH_DATA (push, (height << 16) | dsty);
BEGIN_NVC0(push, NVC0_3D(RT_CONTROL), 1);
PUSH_DATA (push, 1);
BEGIN_NVC0(push, NVC0_3D(RT_ADDRESS_HIGH(0)), 9);
PUSH_DATAh(push, res->address + sf->offset);
PUSH_DATA (push, res->address + sf->offset);
if (likely(nouveau_bo_memtype(res->bo))) {
struct nv50_miptree *mt = nv50_miptree(dst->texture);
PUSH_DATA(push, sf->width);
PUSH_DATA(push, sf->height);
PUSH_DATA(push, nvc0_format_table[dst->format].rt);
PUSH_DATA(push, (mt->layout_3d << 16) |
mt->level[sf->base.u.tex.level].tile_mode);
PUSH_DATA(push, dst->u.tex.first_layer + sf->depth);
PUSH_DATA(push, mt->layer_stride >> 2);
PUSH_DATA(push, dst->u.tex.first_layer);
} else {
if (res->base.target == PIPE_BUFFER) {
void
nv50_clear(struct pipe_context *pipe, unsigned buffers,
const union pipe_color_union *color,
double depth, unsigned stencil)
{
struct nv50_context *nv50 = nv50_context(pipe);
struct nouveau_pushbuf *push = nv50->base.pushbuf;
struct pipe_framebuffer_state *fb = &nv50->framebuffer;
unsigned i;
uint32_t mode = 0;
/* don't need NEW_BLEND, COLOR_MASK doesn't affect CLEAR_BUFFERS */
if (!nv50_state_validate(nv50, NV50_NEW_FRAMEBUFFER, 9 + (fb->nr_cbufs * 2)))
return;
if (buffers & PIPE_CLEAR_COLOR && fb->nr_cbufs) {
BEGIN_NV04(push, NV50_3D(CLEAR_COLOR(0)), 4);
PUSH_DATAf(push, color->f[0]);
PUSH_DATAf(push, color->f[1]);
PUSH_DATAf(push, color->f[2]);
PUSH_DATAf(push, color->f[3]);
mode =
NV50_3D_CLEAR_BUFFERS_R | NV50_3D_CLEAR_BUFFERS_G |
NV50_3D_CLEAR_BUFFERS_B | NV50_3D_CLEAR_BUFFERS_A;
}
if (buffers & PIPE_CLEAR_DEPTH) {
BEGIN_NV04(push, NV50_3D(CLEAR_DEPTH), 1);
PUSH_DATA (push, fui(depth));
mode |= NV50_3D_CLEAR_BUFFERS_Z;
}
if (buffers & PIPE_CLEAR_STENCIL) {
BEGIN_NV04(push, NV50_3D(CLEAR_STENCIL), 1);
PUSH_DATA (push, stencil & 0xff);
mode |= NV50_3D_CLEAR_BUFFERS_S;
}
BEGIN_NV04(push, NV50_3D(CLEAR_BUFFERS), 1);
PUSH_DATA (push, mode);
for (i = 1; i < fb->nr_cbufs; i++) {
BEGIN_NV04(push, NV50_3D(CLEAR_BUFFERS), 1);
PUSH_DATA (push, (i << 6) | 0x3c);
}
}
int main(int argc, char *argv[])
{
/* initialize SDL and its subsystems */
if (SDL_Init(SDL_INIT_EVERYTHING) == -1) die();
if (TTF_Init() == -1) die();
/* set the height and width of the main window, as well as the number
of bits per pixel; this needs to be done prior to initializing the
main window (*screen, below) */
initWindowAttributes();
/* the frame buffer */
SDL_Surface *screen = SDL_SetVideoMode(W_WIDTH, W_HEIGHT,
W_COLOR_DEPTH, SDL_HWSURFACE|SDL_FULLSCREEN);
if (!screen) die();
/* hide the mouse cursor */
SDL_ShowCursor(SDL_DISABLE);
/* the background color of the screen */
const Uint32 clearColor = CLEAR_COLOR(screen->format);
clearScreen(screen, clearColor);
/* clearColor as an SDL_Color, for use with TTF */
Uint8 r, g, b;
SDL_GetRGB(clearColor, screen->format, &r, &g, &b);
SDL_Color bgColor = { r: r, g: g, b: b };
/* the score font */
TTF_Font *font = TTF_OpenFont("resources/VeraMono.ttf", FONT_SIZE);
if (!font) die();
SDL_Color fontColor = FONT_COLOR;
/* the score text; we'll allow three digits plus the terminating '\0' */
char *lScoreStr = malloc(sizeof(char) * 4);
char *rScoreStr = malloc(sizeof(char) * 4);
if (!lScoreStr || !rScoreStr) die();
SDL_Surface *lScore = NULL, *rScore = NULL;
SDL_Rect lScorePos = { x: C_X+FONT_SIZE, y: C_HEIGHT/5,
w: F_WIDTH, h: F_HEIGHT };
SDL_Rect rScorePos = { x: (C_X+C_WIDTH)-3*FONT_SIZE, y: C_HEIGHT/5,
w: F_WIDTH, h: F_HEIGHT };
/* set up the playing court */
Court *court = makeCourt(screen);
if (!court) die();
/* set up the players and their paddles */
Player *lPlayer = makePlayer(screen);
Player *rPlayer = makePlayer(screen);
if (!lPlayer || !rPlayer) die();
rPlayer->paddle.rect.x = C_X + C_WIDTH - P_WIDTH;
/* add the ball */
Ball *ball = makeBall(screen);
if (!ball) die();
/* because SDL_KEY(UP|DOWN) occurs only once, not continuously while
the key is pressed, we need to keep track of whether a key is
(still) pressed */
bool lPlayerShouldMoveUp = false, lPlayerShouldMoveDown = false,
rPlayerShouldMoveUp = false, rPlayerShouldMoveDown = false;
Uint32 startTime; /* denotes the beginning of each iteration
of the main event loop */
bool running = true; /* true till the application should exit */
while (running) {
startTime = SDL_GetTicks();
/* clear the previous frame's paddles and ball */
SDL_FillRect(screen, &lPlayer->paddle.rect, clearColor);
SDL_FillRect(screen, &rPlayer->paddle.rect, clearColor);
SDL_FillRect(screen, &ball->rect, clearColor);
/* clear the previous frame's score */
SDL_FillRect(screen, &lScorePos, clearColor);
SDL_FillRect(screen, &rScorePos, clearColor);
/* redraw the walls in case they were clipped by the ball
in a previous frame */
SDL_FillRect(screen, &court->upperWall, court->color);
SDL_FillRect(screen, &court->lowerWall, court->color);
/* get the current state of the players' controls */
readPlayerInput(&running,
&lPlayerShouldMoveUp, &lPlayerShouldMoveDown,
&rPlayerShouldMoveUp, &rPlayerShouldMoveDown);
/* save the current position of the paddles */
lPlayer->paddle.prevY = lPlayer->paddle.rect.y;
rPlayer->paddle.prevY = rPlayer->paddle.rect.y;
/* move the paddles if appropriate */
if (lPlayerShouldMoveUp)
movePaddle(court, &lPlayer->paddle, UP);
else if (lPlayerShouldMoveDown)
movePaddle(court, &lPlayer->paddle, DOWN);
if (rPlayerShouldMoveUp)
movePaddle(court, &rPlayer->paddle, UP);
else if (rPlayerShouldMoveDown)
movePaddle(court, &rPlayer->paddle, DOWN);
/* move the ball */
moveBall(court, ball, lPlayer, rPlayer);
/* update the score */
updateScore(ball, lPlayer, rPlayer);
/* update the on-screen score */
if (lScore) SDL_FreeSurface(lScore);
snprintf(lScoreStr, 4, "%2d", lPlayer->points);
lScore = TTF_RenderText_Shaded(font, lScoreStr, fontColor,
bgColor);
if (rScore) SDL_FreeSurface(rScore);
snprintf(rScoreStr, 4, "%2d", rPlayer->points);
rScore = TTF_RenderText_Shaded(font, rScoreStr, fontColor,
bgColor);
/* draw the score */
SDL_BlitSurface(lScore, NULL, screen, &lScorePos);
SDL_BlitSurface(rScore, NULL, screen, &rScorePos);
/* draw the paddles */
SDL_FillRect(screen, &lPlayer->paddle.rect,
lPlayer->paddle.color);
SDL_FillRect(screen, &rPlayer->paddle.rect,
rPlayer->paddle.color);
/* draw the ball */
SDL_FillRect(screen, &ball->rect, ball->color);
/* render frame to screen */
SDL_Flip(screen);
/* keep a steady frame rate */
Uint8 elapsedTime = SDL_GetTicks() - startTime;
if (elapsedTime < FRAME_DURATION)
SDL_Delay(FRAME_DURATION - elapsedTime);
}
/* free resources */
free(lScoreStr);
free(rScoreStr);
free(court);
free(lPlayer);
free(rPlayer);
free(ball);
TTF_CloseFont(font);
TTF_Quit();
SDL_FreeSurface(lScore);
SDL_FreeSurface(rScore);
SDL_Quit();
return EXIT_SUCCESS;
}
