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view src/video/qnxgf/SDL_gf_render.c @ 3473:7bdc10624cba

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This is terrible, but the OpenGL standard says that lines are half open, which means that one endpoint is not covered so adjoining lines don't overlap. It also doesn't define which end is open, and indeed Mac OS X and Linux differ. Mac OS X seems to leave the second endpoint open, but Linux uses the right-most endpoint for x major lines and the bottom-most endpoint for y major lines.
author Sam Lantinga <slouken@libsdl.org>
date Sat, 21 Nov 2009 07:14:21 +0000
parents 7f684f249ec9
children 4b594623401b
line wrap: on
line source

/*
    SDL - Simple DirectMedia Layer
    Copyright (C) 1997-2009 Sam Lantinga

    This library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Lesser General Public
    License as published by the Free Software Foundation; either
    version 2.1 of the License, or (at your option) any later version.

    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
    Lesser General Public License for more details.

    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

    Sam Lantinga
    slouken@libsdl.org

    QNX Graphics Framework SDL driver
    Copyright (C) 2009 Mike Gorchak
    (mike@malva.ua, lestat@i.com.ua)
*/

#include "SDL_config.h"

#include "../SDL_pixels_c.h"
#include "../SDL_yuv_sw_c.h"

#include "SDL_video.h"

#include "SDL_gf_render.h"
#include "SDL_qnxgf.h"

static SDL_Renderer *gf_createrenderer(SDL_Window * window, Uint32 flags);
static int gf_displaymodechanged(SDL_Renderer * renderer);
static int gf_activaterenderer(SDL_Renderer * renderer);
static int gf_createtexture(SDL_Renderer * renderer, SDL_Texture * texture);
static int gf_querytexturepixels(SDL_Renderer * renderer,
                                 SDL_Texture * texture, void **pixels,
                                 int *pitch);
static int gf_settexturepalette(SDL_Renderer * renderer,
                                SDL_Texture * texture,
                                const SDL_Color * colors, int firstcolor,
                                int ncolors);
static int gf_gettexturepalette(SDL_Renderer * renderer,
                                SDL_Texture * texture, SDL_Color * colors,
                                int firstcolor, int ncolors);
static int gf_settexturecolormod(SDL_Renderer * renderer,
                                 SDL_Texture * texture);
static int gf_settexturealphamod(SDL_Renderer * renderer,
                                 SDL_Texture * texture);
static int gf_settextureblendmode(SDL_Renderer * renderer,
                                  SDL_Texture * texture);
static int gf_settexturescalemode(SDL_Renderer * renderer,
                                  SDL_Texture * texture);
static int gf_updatetexture(SDL_Renderer * renderer, SDL_Texture * texture,
                            const SDL_Rect * rect, const void *pixels,
                            int pitch);
static int gf_locktexture(SDL_Renderer * renderer, SDL_Texture * texture,
                          const SDL_Rect * rect, int markDirty, void **pixels,
                          int *pitch);
static void gf_unlocktexture(SDL_Renderer * renderer, SDL_Texture * texture);
static void gf_dirtytexture(SDL_Renderer * renderer, SDL_Texture * texture,
                            int numrects, const SDL_Rect * rects);
static int gf_renderpoint(SDL_Renderer * renderer, int x, int y);
static int gf_renderline(SDL_Renderer * renderer, int x1, int y1, int x2,
                         int y2);
static int gf_renderfill(SDL_Renderer * renderer, const SDL_Rect * rect);
static int gf_rendercopy(SDL_Renderer * renderer, SDL_Texture * texture,
                         const SDL_Rect * srcrect, const SDL_Rect * dstrect);
static void gf_renderpresent(SDL_Renderer * renderer);
static void gf_destroytexture(SDL_Renderer * renderer, SDL_Texture * texture);
static void gf_destroyrenderer(SDL_Renderer * renderer);

SDL_RenderDriver gf_renderdriver = {
    gf_createrenderer,
    {
     "qnxgf",
     (SDL_RENDERER_SINGLEBUFFER | SDL_RENDERER_PRESENTCOPY |
      SDL_RENDERER_PRESENTFLIP2 | SDL_RENDERER_PRESENTFLIP3 |
      SDL_RENDERER_PRESENTVSYNC | SDL_RENDERER_PRESENTDISCARD |
      SDL_RENDERER_ACCELERATED),
     (SDL_TEXTUREMODULATE_NONE | SDL_TEXTUREMODULATE_COLOR |
      SDL_TEXTUREMODULATE_ALPHA),
     (SDL_BLENDMODE_NONE | SDL_BLENDMODE_MASK |
      SDL_BLENDMODE_BLEND | SDL_BLENDMODE_ADD | SDL_BLENDMODE_MOD),
     (SDL_TEXTURESCALEMODE_NONE | SDL_TEXTURESCALEMODE_SLOW),
     13,
     {
      SDL_PIXELFORMAT_INDEX8,
      SDL_PIXELFORMAT_RGB555,
      SDL_PIXELFORMAT_RGB565,
      SDL_PIXELFORMAT_RGB888,
      SDL_PIXELFORMAT_BGR888,
      SDL_PIXELFORMAT_ARGB8888,
      SDL_PIXELFORMAT_RGBA8888,
      SDL_PIXELFORMAT_ABGR8888,
      SDL_PIXELFORMAT_BGRA8888,
      SDL_PIXELFORMAT_YV12,
      SDL_PIXELFORMAT_YUY2,
      SDL_PIXELFORMAT_UYVY,
      SDL_PIXELFORMAT_YVYU},
     0,
     0}
};

static SDL_Renderer *
gf_createrenderer(SDL_Window * window, Uint32 flags)
{
    SDL_VideoDisplay *display = SDL_GetDisplayFromWindow(window);
    SDL_DisplayData *didata = (SDL_DisplayData *) display->driverdata;
    SDL_WindowData *wdata = (SDL_WindowData *) window->driverdata;
    SDL_Renderer *renderer = NULL;
    SDL_RenderData *rdata = NULL;
    uint32_t it;
    int32_t jt;
    int32_t status;

    /* Check if it is OpenGL ES window */
    if ((window->flags & SDL_WINDOW_OPENGL) == SDL_WINDOW_OPENGL) {
        /* No error, just no need to create 2D renderer for OpenGL ES window */
        return NULL;
    }

    /* Allocate new renderer structure */
    renderer = (SDL_Renderer *) SDL_calloc(1, sizeof(SDL_Renderer));
    if (renderer == NULL) {
        SDL_OutOfMemory();
        return NULL;
    }

    /* Allocate renderer data */
    rdata = (SDL_RenderData *) SDL_calloc(1, sizeof(SDL_RenderData));
    if (rdata == NULL) {
        SDL_free(renderer);
        SDL_OutOfMemory();
        return NULL;
    }

    renderer->DisplayModeChanged = gf_displaymodechanged;
    renderer->ActivateRenderer = gf_activaterenderer;
    renderer->CreateTexture = gf_createtexture;
    renderer->QueryTexturePixels = gf_querytexturepixels;
    renderer->SetTexturePalette = gf_settexturepalette;
    renderer->GetTexturePalette = gf_gettexturepalette;
    renderer->SetTextureAlphaMod = gf_settexturealphamod;
    renderer->SetTextureColorMod = gf_settexturecolormod;
    renderer->SetTextureBlendMode = gf_settextureblendmode;
    renderer->SetTextureScaleMode = gf_settexturescalemode;
    renderer->UpdateTexture = gf_updatetexture;
    renderer->LockTexture = gf_locktexture;
    renderer->UnlockTexture = gf_unlocktexture;
    renderer->DirtyTexture = gf_dirtytexture;
    renderer->RenderPoint = gf_renderpoint;
    renderer->RenderLine = gf_renderline;
    renderer->RenderFill = gf_renderfill;
    renderer->RenderCopy = gf_rendercopy;
    renderer->RenderPresent = gf_renderpresent;
    renderer->DestroyTexture = gf_destroytexture;
    renderer->DestroyRenderer = gf_destroyrenderer;
    renderer->info = gf_renderdriver.info;
    renderer->window = window->id;
    renderer->driverdata = rdata;

    /* Set render acceleration flag in case it is accelerated */
    if ((didata->caps & SDL_GF_ACCELERATED) == SDL_GF_ACCELERATED) {
        renderer->info.flags = SDL_RENDERER_ACCELERATED;
    } else {
        renderer->info.flags &= ~(SDL_RENDERER_ACCELERATED);
    }

    rdata->window = window;

    /* Check if upper level requested synchronization on vsync signal */
    if ((flags & SDL_RENDERER_PRESENTVSYNC) == SDL_RENDERER_PRESENTVSYNC) {
        rdata->enable_vsync = SDL_TRUE;
    } else {
        rdata->enable_vsync = SDL_FALSE;
    }

    /* Check what buffer copy/flip scheme is requested */
    rdata->surfaces_count = 0;
    if ((flags & SDL_RENDERER_SINGLEBUFFER) == SDL_RENDERER_SINGLEBUFFER) {
        if ((flags & SDL_RENDERER_PRESENTDISCARD) ==
            SDL_RENDERER_PRESENTDISCARD) {
            renderer->info.flags |=
                SDL_RENDERER_SINGLEBUFFER | SDL_RENDERER_PRESENTDISCARD;
        } else {
            renderer->info.flags |=
                SDL_RENDERER_SINGLEBUFFER | SDL_RENDERER_PRESENTCOPY;
        }
        rdata->surfaces_count = 1;
        rdata->surface_visible_idx = 0;
        rdata->surface_render_idx = 0;
    } else {
        if ((flags & SDL_RENDERER_PRESENTFLIP2) == SDL_RENDERER_PRESENTFLIP2) {
            renderer->info.flags |= SDL_RENDERER_PRESENTFLIP2;
            rdata->surfaces_count = 2;
            rdata->surface_visible_idx = 0;
            rdata->surface_render_idx = 1;
        } else {
            if ((flags & SDL_RENDERER_PRESENTFLIP3) ==
                SDL_RENDERER_PRESENTFLIP3) {
                renderer->info.flags |= SDL_RENDERER_PRESENTFLIP3;
                rdata->surfaces_count = 3;
                rdata->surface_visible_idx = 0;
                rdata->surface_render_idx = 1;
            } else {
                renderer->info.flags |=
                    SDL_RENDERER_SINGLEBUFFER | SDL_RENDERER_PRESENTCOPY;
                rdata->surfaces_count = 1;
                rdata->surface_visible_idx = 0;
                rdata->surface_render_idx = 0;
            }
        }
    }

    /* Create layer surfaces, which could be visible */
    for (it = 0; it < rdata->surfaces_count; it++) {
        /* TODO: add palette creation */

        /* Create displayable surfaces */
        status =
            gf_surface_create_layer(&rdata->surface[it], &didata->layer, 1, 0,
                                    didata->current_mode.w,
                                    didata->current_mode.h,
                                    qnxgf_sdl_to_gf_pixelformat(didata->
                                                                current_mode.
                                                                format), NULL,
                                    GF_SURFACE_CREATE_2D_ACCESSIBLE);

        if (status != GF_ERR_OK) {
            /* Free already allocated surfaces */
            for (jt = it - 1; jt > 0; jt--) {
                gf_surface_free(rdata->surface[jt]);
                rdata->surface[jt] = NULL;
            }
            SDL_free(rdata);
            SDL_free(renderer);
            if (status == GF_ERR_MEM) {
                SDL_SetError("unsufficient free video memory");
            } else {
                SDL_SetError("error during displayable surface creation");
            }
            return NULL;
        }

        /* Get detailed information about allocated surface */
        gf_surface_get_info(rdata->surface[it], &rdata->surface_info[it]);
    }

    return renderer;
}

void
gf_addrenderdriver(_THIS)
{
    uint32_t it;

    for (it = 0; it < _this->num_displays; it++) {
        SDL_AddRenderDriver(it, &gf_renderdriver);
    }
}

/****************************************************************************/
/* SDL render interface                                                     */
/****************************************************************************/
static int
gf_displaymodechanged(SDL_Renderer * renderer)
{
    SDL_RenderData *rdata = (SDL_RenderData *) renderer->driverdata;

    /* Remove all allocated surfaces, they are no more valid */

    /* TODO: Add video mode change detection and new parameters detection */

    return 0;
}

static int
gf_activaterenderer(SDL_Renderer * renderer)
{
    SDL_RenderData *rdata = (SDL_RenderData *) renderer->driverdata;
    SDL_VideoDisplay *display = SDL_GetDisplayFromWindow(rdata->window);
    SDL_DisplayData *didata = (SDL_DisplayData *) display->driverdata;

    /* Setup current surface as visible */
//   gf_layer_set_surfaces(didata->layer, &rdata->surface[rdata->surface_visible_idx], 1);

    /* Set visible surface when hardware in idle state */
//   gf_layer_update(didata->layer, GF_LAYER_UPDATE_NO_WAIT_IDLE);

    return 0;
}

static int
gf_createtexture(SDL_Renderer * renderer, SDL_Texture * texture)
{
    SDL_RenderData *renderdata = (SDL_RenderData *) renderer->driverdata;
    SDL_Window *window = SDL_GetWindowFromID(renderer->window);
    SDL_VideoDisplay *display = SDL_GetDisplayFromWindow(window);
    SDL_TextureData *tdata = NULL;

    /* Allocate texture driver data */
    tdata = (SDL_TextureData *) SDL_calloc(1, sizeof(SDL_TextureData));
    if (tdata == NULL) {
        SDL_OutOfMemory();
        return -1;
    }

    /* Set texture driver data */
    texture->driverdata = tdata;

}

static int
gf_querytexturepixels(SDL_Renderer * renderer, SDL_Texture * texture,
                      void **pixels, int *pitch)
{
}

static int
gf_settexturepalette(SDL_Renderer * renderer, SDL_Texture * texture,
                     const SDL_Color * colors, int firstcolor, int ncolors)
{
}

static int
gf_gettexturepalette(SDL_Renderer * renderer, SDL_Texture * texture,
                     SDL_Color * colors, int firstcolor, int ncolors)
{
}

static int
gf_settexturecolormod(SDL_Renderer * renderer, SDL_Texture * texture)
{
}

static int
gf_settexturealphamod(SDL_Renderer * renderer, SDL_Texture * texture)
{
}

static int
gf_settextureblendmode(SDL_Renderer * renderer, SDL_Texture * texture)
{
}

static int
gf_settexturescalemode(SDL_Renderer * renderer, SDL_Texture * texture)
{
}

static int
gf_updatetexture(SDL_Renderer * renderer, SDL_Texture * texture,
                 const SDL_Rect * rect, const void *pixels, int pitch)
{
}

static int
gf_locktexture(SDL_Renderer * renderer, SDL_Texture * texture,
               const SDL_Rect * rect, int markDirty, void **pixels,
               int *pitch)
{
}

static void
gf_unlocktexture(SDL_Renderer * renderer, SDL_Texture * texture)
{
}

static void
gf_dirtytexture(SDL_Renderer * renderer, SDL_Texture * texture, int numrects,
                const SDL_Rect * rects)
{
}

static int
gf_renderpoint(SDL_Renderer * renderer, int x, int y)
{
}

static int
gf_renderline(SDL_Renderer * renderer, int x1, int y1, int x2, int y2)
{
}

static int
gf_renderfill(SDL_Renderer * renderer, const SDL_Rect * rect)
{
}

static int
gf_rendercopy(SDL_Renderer * renderer, SDL_Texture * texture,
              const SDL_Rect * srcrect, const SDL_Rect * dstrect)
{
}

static void
gf_renderpresent(SDL_Renderer * renderer)
{
}

static void
gf_destroytexture(SDL_Renderer * renderer, SDL_Texture * texture)
{
}

static void
gf_destroyrenderer(SDL_Renderer * renderer)
{
    SDL_RenderData *rdata = (SDL_RenderData *) renderer->driverdata;
    uint32_t it;

    for (it = 0; it < rdata->surfaces_count; it++) {
        if (rdata->surface[it] != NULL) {
            gf_surface_free(rdata->surface[it]);
        }
    }
}

/* vi: set ts=4 sw=4 expandtab: */