void TinyGLRenderer::drawTexturedRect3D(const Math::Vector3d &topLeft, const Math::Vector3d &bottomLeft,
const Math::Vector3d &topRight, const Math::Vector3d &bottomRight, Texture *texture) {
TinyGLTexture *glTexture = static_cast<TinyGLTexture *>(texture);
const float w = glTexture->width / (float)glTexture->internalWidth;
const float h = glTexture->height / (float)glTexture->internalHeight;
tglBlendFunc(TGL_SRC_ALPHA, TGL_ONE_MINUS_SRC_ALPHA);
tglEnable(TGL_BLEND);
tglDepthMask(TGL_FALSE);
tglBindTexture(TGL_TEXTURE_2D, glTexture->id);
tglBegin(TGL_TRIANGLE_STRIP);
tglTexCoord2f(0, 0);
tglVertex3f(-topLeft.x(), topLeft.y(), topLeft.z());
tglTexCoord2f(0, h);
tglVertex3f(-bottomLeft.x(), bottomLeft.y(), bottomLeft.z());
tglTexCoord2f(w, 0);
tglVertex3f(-topRight.x(), topRight.y(), topRight.z());
tglTexCoord2f(w, h);
tglVertex3f(-bottomRight.x(), bottomRight.y(), bottomRight.z());
tglEnd();
tglDisable(TGL_BLEND);
tglDepthMask(TGL_TRUE);
}
void TinyGLRenderer::drawTexturedRect2D(const Common::Rect &screenRect, const Common::Rect &textureRect,
Texture *texture, float transparency, bool additiveBlending) {
const float sLeft = screenRect.left;
const float sTop = screenRect.top;
const float sWidth = screenRect.width();
const float sHeight = screenRect.height();
if (transparency >= 0.0) {
if (additiveBlending) {
tglBlendFunc(TGL_SRC_ALPHA, TGL_ONE);
} else {
tglBlendFunc(TGL_SRC_ALPHA, TGL_ONE_MINUS_SRC_ALPHA);
}
tglEnable(TGL_BLEND);
} else {
transparency = 1.0;
}
tglEnable(TGL_TEXTURE_2D);
tglDepthMask(TGL_FALSE);
Graphics::BlitTransform transform(sLeft, sTop);
transform.sourceRectangle(textureRect.left, textureRect.top, sWidth, sHeight);
transform.tint(transparency);
tglBlit(((TinyGLTexture *)texture)->getBlitTexture(), transform);
tglDisable(TGL_BLEND);
tglDepthMask(TGL_TRUE);
}
void GfxTinyGL::setShadow(Shadow *shadow) {
_currentShadowArray = shadow;
if (shadow)
tglDisable(TGL_LIGHTING);
else
tglEnable(TGL_LIGHTING);
}
void TinyGLRenderer::drawRect2D(const Common::Rect &rect, uint32 color) {
uint8 a, r, g, b;
Graphics::colorToARGB< Graphics::ColorMasks<8888> >(color, a, r, g, b);
tglDisable(TGL_TEXTURE_2D);
tglColor4f(r / 255.0, g / 255.0, b / 255.0, a / 255.0);
if (a != 255) {
tglEnable(TGL_BLEND);
tglBlendFunc(TGL_SRC_ALPHA, TGL_ONE_MINUS_SRC_ALPHA);
}
for (int x = rect.left; x < rect.right; x++) {
for (int y = rect.top; y < rect.bottom; y++) {
_fb->writePixel(y * kOriginalWidth + x, a, r, g, b);
}
}
tglDisable(TGL_BLEND);
}
void TinyGLRenderer::drawRect2D(const Common::Rect &rect, uint32 color) {
uint8 a, r, g, b;
Graphics::colorToARGB< Graphics::ColorMasks<8888> >(color, a, r, g, b);
tglDisable(TGL_TEXTURE_2D);
tglColor4f(r / 255.0, g / 255.0, b / 255.0, a / 255.0);
if (a != 255) {
tglEnable(TGL_BLEND);
tglBlendFunc(TGL_SRC_ALPHA, TGL_ONE_MINUS_SRC_ALPHA);
}
tglBegin(TGL_TRIANGLE_STRIP);
tglVertex3f(rect.left, rect.bottom, 0.0f);
tglVertex3f(rect.right, rect.bottom, 0.0f);
tglVertex3f(rect.left, rect.top, 0.0f);
tglVertex3f(rect.right, rect.top, 0.0f);
tglEnd();
tglDisable(TGL_BLEND);
}
void TinyGLRenderer::draw2DText(const Common::String &text, const Common::Point &position) {
TinyGLTexture *glFont = static_cast<TinyGLTexture *>(_font);
// The font only has uppercase letters
Common::String textToDraw = text;
textToDraw.toUppercase();
tglEnable(TGL_BLEND);
tglBlendFunc(TGL_SRC_ALPHA, TGL_ONE_MINUS_SRC_ALPHA);
tglEnable(TGL_TEXTURE_2D);
tglDepthMask(TGL_FALSE);
tglColor3f(1.0f, 1.0f, 1.0f);
tglBindTexture(TGL_TEXTURE_2D, glFont->id);
int x = position.x;
int y = position.y;
for (uint i = 0; i < textToDraw.size(); i++) {
Common::Rect textureRect = getFontCharacterRect(textToDraw[i]);
int w = textureRect.width();
int h = textureRect.height();
Graphics::BlitTransform transform(x, y);
transform.sourceRectangle(textureRect.left, textureRect.top, w, h);
transform.flip(true, false);
Graphics::tglBlit(glFont->getBlitTexture(), transform);
x += textureRect.width() - 3;
}
tglDisable(TGL_TEXTURE_2D);
tglDisable(TGL_BLEND);
tglDepthMask(TGL_TRUE);
}
void GfxTinyGL::setupLight(Light *light, int lightId) {
assert(lightId < T_MAX_LIGHTS);
tglEnable(TGL_LIGHTING);
float lightColor[] = { 0.0f, 0.0f, 0.0f, 1.0f };
float lightPos[] = { 0.0f, 0.0f, 0.0f, 1.0f };
float lightDir[] = { 0.0f, 0.0f, -1.0f };
float cutoff = 180.0f;
float intensity = light->_intensity / 1.3f;
lightColor[0] = ((float)light->_color.getRed() / 15.0f) * intensity;
lightColor[1] = ((float)light->_color.getGreen() / 15.0f) * intensity;
lightColor[2] = ((float)light->_color.getBlue() / 15.0f) * intensity;
if (light->_type == "omni") {
lightPos[0] = light->_pos.x();
lightPos[1] = light->_pos.y();
lightPos[2] = light->_pos.z();
} else if (light->_type == "direct") {
lightPos[0] = -light->_dir.x();
lightPos[1] = -light->_dir.y();
lightPos[2] = -light->_dir.z();
lightPos[3] = 0;
} else if (light->_type == "spot") {
lightPos[0] = light->_pos.x();
lightPos[1] = light->_pos.y();
lightPos[2] = light->_pos.z();
lightDir[0] = light->_dir.x();
lightDir[1] = light->_dir.y();
lightDir[2] = light->_dir.z();
/* FIXME: TGL_SPOT_CUTOFF should be light->_penumbraangle, but there
seems to be a bug in tinygl as it renders differently from OpenGL.
Reproducing: turn off all lights (comment out), go to scene "al",
and walk along left wall under the lamp. */
cutoff = 90.0f;
} else {
error("Scene::setupLights() Unknown type of light: %s", light->_type.c_str());
return;
}
tglDisable(TGL_LIGHT0 + lightId);
tglLightfv(TGL_LIGHT0 + lightId, TGL_DIFFUSE, lightColor);
tglLightfv(TGL_LIGHT0 + lightId, TGL_POSITION, lightPos);
tglLightfv(TGL_LIGHT0 + lightId, TGL_SPOT_DIRECTION, lightDir);
tglLightf(TGL_LIGHT0 + lightId, TGL_SPOT_CUTOFF, cutoff);
tglEnable(TGL_LIGHT0 + lightId);
}
void TinyGLRenderer::init(Graphics::PixelBuffer &screenBuffer) {
debug("Initializing Software 3D Renderer");
_nonPowerOfTwoTexSupport = true;
_fb = new TinyGL::FrameBuffer(kOriginalWidth, kOriginalHeight, screenBuffer);
TinyGL::glInit(_fb, 512);
tglMatrixMode(TGL_PROJECTION);
tglLoadIdentity();
tglMatrixMode(TGL_MODELVIEW);
tglLoadIdentity();
tglDisable(TGL_LIGHTING);
tglEnable(TGL_TEXTURE_2D);
tglEnable(TGL_DEPTH_TEST);
}
void TinyGLRenderer::init() {
debug("Initializing Software 3D Renderer");
computeScreenViewport();
Graphics::PixelBuffer screenBuffer = _system->getScreenPixelBuffer();
_fb = new TinyGL::FrameBuffer(kOriginalWidth, kOriginalHeight, screenBuffer);
TinyGL::glInit(_fb, 512);
tglMatrixMode(TGL_PROJECTION);
tglLoadIdentity();
tglMatrixMode(TGL_MODELVIEW);
tglLoadIdentity();
tglDisable(TGL_LIGHTING);
tglEnable(TGL_TEXTURE_2D);
tglEnable(TGL_DEPTH_TEST);
}
void GfxTinyGL::drawShadowPlanes() {
tglEnable(TGL_SHADOW_MASK_MODE);
if (!_currentShadowArray->shadowMask) {
_currentShadowArray->shadowMask = new byte[_screenWidth * _screenHeight];
_currentShadowArray->shadowMaskSize = _screenWidth * _screenHeight;
}
memset(_currentShadowArray->shadowMask, 0, _screenWidth * _screenHeight);
tglSetShadowMaskBuf(_currentShadowArray->shadowMask);
_currentShadowArray->planeList.begin();
for (SectorListType::iterator i = _currentShadowArray->planeList.begin(); i != _currentShadowArray->planeList.end(); ++i) {
Sector *shadowSector = i->sector;
tglBegin(TGL_POLYGON);
for (int k = 0; k < shadowSector->getNumVertices(); k++) {
tglVertex3f(shadowSector->getVertices()[k].x(), shadowSector->getVertices()[k].y(), shadowSector->getVertices()[k].z());
}
tglEnd();
}
tglSetShadowMaskBuf(NULL);
tglDisable(TGL_SHADOW_MASK_MODE);
}
void GfxTinyGL::drawSprite(const Sprite *sprite) {
tglMatrixMode(TGL_TEXTURE);
tglLoadIdentity();
tglMatrixMode(TGL_MODELVIEW);
tglPushMatrix();
tglTranslatef(sprite->_pos.x(), sprite->_pos.y(), sprite->_pos.z());
TGLfloat modelview[16];
tglGetFloatv(TGL_MODELVIEW_MATRIX, modelview);
// We want screen-aligned sprites so reset the rotation part of the matrix.
for (int i = 0; i < 3; i++) {
for (int j = 0; j < 3; j++) {
if (i == j) {
modelview[i * 4 + j] = 1.0f;
} else {
modelview[i * 4 + j] = 0.0f;
}
}
}
tglLoadMatrixf(modelview);
tglDisable(TGL_LIGHTING);
tglBegin(TGL_POLYGON);
tglTexCoord2f(0.0f, 0.0f);
tglVertex3f(sprite->_width / 2, sprite->_height, 0.0f);
tglTexCoord2f(0.0f, 1.0f);
tglVertex3f(sprite->_width / 2, 0.0f, 0.0f);
tglTexCoord2f(1.0f, 1.0f);
tglVertex3f(-sprite->_width / 2, 0.0f, 0.0f);
tglTexCoord2f(1.0f, 0.0f);
tglVertex3f(-sprite->_width / 2, sprite->_height, 0.0f);
tglEnd();
tglEnable(TGL_LIGHTING);
tglPopMatrix();
}
void GfxTinyGL::finishActorDraw() {
tglMatrixMode(TGL_MODELVIEW);
tglPopMatrix();
tglDisable(TGL_TEXTURE_2D);
if (_currentShadowArray) {
tglSetShadowMaskBuf(NULL);
}/* else {
uint16 *dst = (uint16 *)_zb->pbuf;
uint16 c = 0xffff;
for (int x = g_winX1; x <= g_winX2; x++) {
WRITE_LE_UINT16(dst + 640 * g_winY1 + x, c);
}
for (int x = g_winX1; x <= g_winX2; x++) {
WRITE_LE_UINT16(dst + 640 * g_winY2 + x, c);
}
for (int y = g_winY1; y <= g_winY2; y++) {
WRITE_LE_UINT16(dst + 640 * y + g_winX1, c);
}
for (int y = g_winY1; y <= g_winY2; y++) {
WRITE_LE_UINT16(dst + 640 * y + g_winX2, c);
}
}*/
}
void GfxTinyGL::disableLights() {
tglDisable(TGL_LIGHTING);
}
void GfxTinyGL::clearShadowMode() {
tglDisable(TGL_SHADOW_MODE);
}