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C++ GLES_RenderData::glDrawArrays方法代码示例

本文整理汇总了C++中GLES_RenderData::glDrawArrays方法的典型用法代码示例。如果您正苦于以下问题：C++ GLES_RenderData::glDrawArrays方法的具体用法？C++ GLES_RenderData::glDrawArrays怎么用？C++ GLES_RenderData::glDrawArrays使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类GLES_RenderData的用法示例。


在下文中一共展示了GLES_RenderData::glDrawArrays方法的8个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。

示例1: 

static int
GLES_RenderFillRects(SDL_Renderer * renderer, const SDL_FRect * rects,
                     int count)
{
    GLES_RenderData *data = (GLES_RenderData *) renderer->driverdata;
    int i;

    GLES_SetDrawingState(renderer);

    for (i = 0; i < count; ++i) {
        const SDL_FRect *rect = &rects[i];
        GLfloat minx = rect->x;
        GLfloat maxx = rect->x + rect->w;
        GLfloat miny = rect->y;
        GLfloat maxy = rect->y + rect->h;
        GLfloat vertices[8];
        vertices[0] = minx;
        vertices[1] = miny;
        vertices[2] = maxx;
        vertices[3] = miny;
        vertices[4] = minx;
        vertices[5] = maxy;
        vertices[6] = maxx;
        vertices[7] = maxy;

        data->glVertexPointer(2, GL_FLOAT, 0, vertices);
        data->glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);
    }

    return 0;
}
开发者ID:D-Quick，项目名称:DQuick，代码行数:31，代码来源:SDL_render_gles.c

示例2: 

static int
GLES_RenderDrawPoints(SDL_Renderer * renderer, const SDL_Point * points,
                      int count)
{
    GLES_RenderData *data = (GLES_RenderData *) renderer->driverdata;
    int i;
    GLshort *vertices;

    GLES_SetBlendMode(data, renderer->blendMode, 1);

    data->glColor4f((GLfloat) renderer->r * inv255f,
                    (GLfloat) renderer->g * inv255f,
                    (GLfloat) renderer->b * inv255f,
                    (GLfloat) renderer->a * inv255f);

    vertices = SDL_stack_alloc(GLshort, count*2);
    for (i = 0; i < count; ++i) {
        vertices[2*i+0] = (GLshort)points[i].x;
        vertices[2*i+1] = (GLshort)points[i].y;
    }
    data->glVertexPointer(2, GL_SHORT, 0, vertices);
    data->glEnableClientState(GL_VERTEX_ARRAY);
    data->glDrawArrays(GL_POINTS, 0, count);
    data->glDisableClientState(GL_VERTEX_ARRAY);
    SDL_stack_free(vertices);

    return 0;
}
开发者ID:Alexander--，项目名称:Wesnoth-1.8-for-Android，代码行数:28，代码来源:SDL_renderer_gles.c

示例3: 

static int
GLES_RenderDrawPoints(SDL_Renderer * renderer, const SDL_FPoint * points,
                      int count)
{
    GLES_RenderData *data = (GLES_RenderData *) renderer->driverdata;
    GLfloat *vertices;
    int idx;

    GLES_SetDrawingState(renderer);

    /* Emit the specified vertices as points */
    vertices = SDL_stack_alloc(GLfloat, count * 2);
    for (idx = 0; idx < count; ++idx) {
        GLfloat x = points[idx].x + 0.5f;
        GLfloat y = points[idx].y + 0.5f;

        vertices[idx * 2] = x;
        vertices[(idx * 2) + 1] = y;
    }

    data->glVertexPointer(2, GL_FLOAT, 0, vertices);
    data->glDrawArrays(GL_POINTS, 0, count);
    SDL_stack_free(vertices);
    return 0;
}
开发者ID:Distrotech，项目名称:SDL，代码行数:25，代码来源:SDL_render_gles.c

示例4: 

static int
GLES_RenderDrawLines(SDL_Renderer * renderer, const SDL_FPoint * points,
                     int count)
{
    GLES_RenderData *data = (GLES_RenderData *) renderer->driverdata;

    GLES_SetDrawingState(renderer);

    data->glVertexPointer(2, GL_FLOAT, 0, points);
    if (count > 2 &&
        points[0].x == points[count-1].x && points[0].y == points[count-1].y) {
        /* GL_LINE_LOOP takes care of the final segment */
        --count;
        data->glDrawArrays(GL_LINE_LOOP, 0, count);
    } else {
        data->glDrawArrays(GL_LINE_STRIP, 0, count);
        /* We need to close the endpoint of the line */
        data->glDrawArrays(GL_POINTS, count-1, 1);
    }

    return 0;
}
开发者ID:SaschaWillems，项目名称:vkQuake，代码行数:22，代码来源:SDL_render_gles.c

示例5: 

static int
GLES_RenderDrawPoints(SDL_Renderer * renderer, const SDL_Point * points,
                      int count)
{
    GLES_RenderData *data = (GLES_RenderData *) renderer->driverdata;
    int i;
    GLshort *vertices;

    GLES_SetDrawingState(renderer);

    vertices = SDL_stack_alloc(GLshort, count*2);
    for (i = 0; i < count; ++i) {
        vertices[2*i+0] = (GLshort)points[i].x;
        vertices[2*i+1] = (GLshort)points[i].y;
    }
    data->glVertexPointer(2, GL_SHORT, 0, vertices);
    data->glDrawArrays(GL_POINTS, 0, count);
    SDL_stack_free(vertices);

    return 0;
}
开发者ID:knepe，项目名称:cdogs-sdl-android，代码行数:21，代码来源:SDL_render_gles.c

示例6: 

static int
GLES_RenderFillRects(SDL_Renderer * renderer, const SDL_Rect ** rects,
                     int count)
{
    GLES_RenderData *data = (GLES_RenderData *) renderer->driverdata;
    int i;

    GLES_SetBlendMode(data, renderer->blendMode, 1);

    data->glColor4f((GLfloat) renderer->r * inv255f,
                    (GLfloat) renderer->g * inv255f,
                    (GLfloat) renderer->b * inv255f,
                    (GLfloat) renderer->a * inv255f);

    data->glEnableClientState(GL_VERTEX_ARRAY);
    for (i = 0; i < count; ++i) {
        const SDL_Rect *rect = rects[i];
        GLshort minx = rect->x;
        GLshort maxx = rect->x + rect->w;
        GLshort miny = rect->y;
        GLshort maxy = rect->y + rect->h;
        GLshort vertices[8];
        vertices[0] = minx;
        vertices[1] = miny;
        vertices[2] = maxx;
        vertices[3] = miny;
        vertices[4] = minx;
        vertices[5] = maxy;
        vertices[6] = maxx;
        vertices[7] = maxy;

        data->glVertexPointer(2, GL_SHORT, 0, vertices);
        data->glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);
    }
    data->glDisableClientState(GL_VERTEX_ARRAY);

    return 0;
}
开发者ID:albertz，项目名称:sdl，代码行数:38，代码来源:SDL_renderer_gles.c

示例7: 

static int
GLES_RenderCopyEx(SDL_Renderer * renderer, SDL_Texture * texture,
                const SDL_Rect * srcrect, const SDL_FRect * dstrect,
                const double angle, const SDL_FPoint *center, const SDL_RendererFlip flip)
{

    GLES_RenderData *data = (GLES_RenderData *) renderer->driverdata;
    GLES_TextureData *texturedata = (GLES_TextureData *) texture->driverdata;
    GLfloat minx, miny, maxx, maxy;
    GLfloat minu, maxu, minv, maxv;
    GLfloat centerx, centery;
    GLfloat vertices[8];
    GLfloat texCoords[8];


    GLES_ActivateRenderer(renderer);

    data->glEnable(GL_TEXTURE_2D);

    data->glBindTexture(texturedata->type, texturedata->texture);

    if (texture->modMode) {
        GLES_SetColor(data, texture->r, texture->g, texture->b, texture->a);
    } else {
        GLES_SetColor(data, 255, 255, 255, 255);
    }

    GLES_SetBlendMode(data, texture->blendMode);

    GLES_SetTexCoords(data, SDL_TRUE);

    centerx = center->x;
    centery = center->y;

    /* Rotate and translate */
    data->glPushMatrix();
    data->glTranslatef(dstrect->x + centerx, dstrect->y + centery, 0.0f);
    data->glRotatef((GLfloat)angle, 0.0f, 0.0f, 1.0f);

    if (flip & SDL_FLIP_HORIZONTAL) {
        minx =  dstrect->w - centerx;
        maxx = -centerx;
    } else {
        minx = -centerx;
        maxx = dstrect->w - centerx;
    }

    if (flip & SDL_FLIP_VERTICAL) {
        miny = dstrect->h - centery;
        maxy = -centery;
    } else {
        miny = -centery;
        maxy = dstrect->h - centery;
    }

    minu = (GLfloat) srcrect->x / texture->w;
    minu *= texturedata->texw;
    maxu = (GLfloat) (srcrect->x + srcrect->w) / texture->w;
    maxu *= texturedata->texw;
    minv = (GLfloat) srcrect->y / texture->h;
    minv *= texturedata->texh;
    maxv = (GLfloat) (srcrect->y + srcrect->h) / texture->h;
    maxv *= texturedata->texh;

    vertices[0] = minx;
    vertices[1] = miny;
    vertices[2] = maxx;
    vertices[3] = miny;
    vertices[4] = minx;
    vertices[5] = maxy;
    vertices[6] = maxx;
    vertices[7] = maxy;

    texCoords[0] = minu;
    texCoords[1] = minv;
    texCoords[2] = maxu;
    texCoords[3] = minv;
    texCoords[4] = minu;
    texCoords[5] = maxv;
    texCoords[6] = maxu;
    texCoords[7] = maxv;
    data->glVertexPointer(2, GL_FLOAT, 0, vertices);
    data->glTexCoordPointer(2, GL_FLOAT, 0, texCoords);
    data->glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);
    data->glPopMatrix();
    data->glDisable(GL_TEXTURE_2D);

    return 0;
}
开发者ID:1vanK，项目名称:Urho3D，代码行数:89，代码来源:SDL_render_gles.c

示例8: SetupTextureUpdate


//.........这里部分代码省略.........
                                  texturedata->formattype, temp_buffer);

            SDL_free(temp_buffer);

        }
        SDL_ClearDirtyRects(&texturedata->dirty);
    }

    data->glBindTexture(texturedata->type, texturedata->texture);

    if (texture->modMode) {
        data->glColor4f((GLfloat) texture->r * inv255f,
                        (GLfloat) texture->g * inv255f,
                        (GLfloat) texture->b * inv255f,
                        (GLfloat) texture->a * inv255f);
    } else {
        data->glColor4f(1.0f, 1.0f, 1.0f, 1.0f);
    }

    GLES_SetBlendMode(data, texture->blendMode, 0);

    switch (texture->scaleMode) {
    case SDL_TEXTURESCALEMODE_NONE:
    case SDL_TEXTURESCALEMODE_FAST:
        data->glTexParameteri(texturedata->type, GL_TEXTURE_MIN_FILTER,
                              GL_NEAREST);
        data->glTexParameteri(texturedata->type, GL_TEXTURE_MAG_FILTER,
                              GL_NEAREST);
        break;
    case SDL_TEXTURESCALEMODE_SLOW:
    case SDL_TEXTURESCALEMODE_BEST:
        data->glTexParameteri(texturedata->type, GL_TEXTURE_MIN_FILTER,
                              GL_LINEAR);
        data->glTexParameteri(texturedata->type, GL_TEXTURE_MAG_FILTER,
                              GL_LINEAR);
        break;
    }

    if (data->GL_OES_draw_texture_supported && data->useDrawTexture) {
        /* this code is a little funny because the viewport is upside down vs SDL's coordinate system */
        SDL_Window *window = renderer->window;
        GLint cropRect[4];
        cropRect[0] = srcrect->x;
        cropRect[1] = srcrect->y + srcrect->h;
        cropRect[2] = srcrect->w;
        cropRect[3] = -srcrect->h;
        data->glTexParameteriv(GL_TEXTURE_2D, GL_TEXTURE_CROP_RECT_OES,
                               cropRect);
        data->glDrawTexiOES(dstrect->x, window->h - dstrect->y - dstrect->h,
                            0, dstrect->w, dstrect->h);
    } else {

        minx = dstrect->x;
        miny = dstrect->y;
        maxx = dstrect->x + dstrect->w;
        maxy = dstrect->y + dstrect->h;

        minu = (GLfloat) srcrect->x / texture->w;
        minu *= texturedata->texw;
        maxu = (GLfloat) (srcrect->x + srcrect->w) / texture->w;
        maxu *= texturedata->texw;
        minv = (GLfloat) srcrect->y / texture->h;
        minv *= texturedata->texh;
        maxv = (GLfloat) (srcrect->y + srcrect->h) / texture->h;
        maxv *= texturedata->texh;

        GLshort vertices[8];
        GLfloat texCoords[8];

        vertices[0] = minx;
        vertices[1] = miny;
        vertices[2] = maxx;
        vertices[3] = miny;
        vertices[4] = minx;
        vertices[5] = maxy;
        vertices[6] = maxx;
        vertices[7] = maxy;

        texCoords[0] = minu;
        texCoords[1] = minv;
        texCoords[2] = maxu;
        texCoords[3] = minv;
        texCoords[4] = minu;
        texCoords[5] = maxv;
        texCoords[6] = maxu;
        texCoords[7] = maxv;

        data->glVertexPointer(2, GL_SHORT, 0, vertices);
        data->glEnableClientState(GL_VERTEX_ARRAY);
        data->glTexCoordPointer(2, GL_FLOAT, 0, texCoords);
        data->glEnableClientState(GL_TEXTURE_COORD_ARRAY);
        data->glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);
        data->glDisableClientState(GL_TEXTURE_COORD_ARRAY);
        data->glDisableClientState(GL_VERTEX_ARRAY);
    }

    data->glDisable(GL_TEXTURE_2D);

    return 0;
}
开发者ID:albertz，项目名称:sdl，代码行数:101，代码来源:SDL_renderer_gles.c


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