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GRAPHICS: Screenshots and specialty textures [OpenGLS]

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This commit is contained in:
Dries Harnie 2013-07-14 15:48:51 +02:00
parent 4157f52eb2
commit fa2077626d
1 changed files with 56 additions and 0 deletions
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56
engines/grim/gfx_opengl_shaders.cpp
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@ -1071,6 +1071,34 @@ void GfxOpenGLS::destroyTextObject(TextObject *text) {
Bitmap *GfxOpenGLS::getScreenshot(int w, int h) {
Graphics::PixelBuffer buffer = Graphics::PixelBuffer::createBuffer<565>(w * h, DisposeAfterUse::YES);
Graphics::PixelBuffer src(Graphics::PixelFormat(4, 8, 8, 8, 8, 0, 8, 16, 24), _screenWidth * _screenHeight, DisposeAfterUse::YES);
glReadPixels(0, 0, _screenWidth, _screenHeight, GL_RGBA, GL_UNSIGNED_BYTE, src.getRawBuffer());
int i1 = (_screenWidth * w - 1) / _screenWidth + 1;
int j1 = (_screenHeight * h - 1) / _screenHeight + 1;
for (int j = 0; j < j1; j++) {
for (int i = 0; i < i1; i++) {
int x0 = i * _screenWidth / w;
int x1 = ((i + 1) * _screenWidth - 1) / w + 1;
int y0 = j * _screenHeight / h;
int y1 = ((j + 1) * _screenHeight - 1) / h + 1;
uint32 color = 0;
for (int y = y0; y < y1; y++) {
for (int x = x0; x < x1; x++) {
uint8 lr, lg, lb;
src.getRGBAt(y * _screenWidth + x, lr, lg, lb);
color += (lr + lg + lb) / 3;
}
}
color /= (x1 - x0) * (y1 - y0);
buffer.setPixelAt((h - j - 1) * w + i, color, color, color);
}
}
Bitmap *screenshot = new Bitmap(buffer, w, h, "screenshot");
return screenshot;
}
void GfxOpenGLS::storeDisplay() {
@ -1247,6 +1275,34 @@ void GfxOpenGLS::renderZBitmaps(bool render) {
void GfxOpenGLS::createSpecialtyTextures() {
//make a buffer big enough to hold any of the textures
char *buffer = new char[256*256*4];
glReadPixels(0, 0, 256, 256, GL_RGBA, GL_UNSIGNED_BYTE, buffer);
_specialty[0].create(buffer, 256, 256);
glReadPixels(256, 0, 256, 256, GL_RGBA, GL_UNSIGNED_BYTE, buffer);
_specialty[1].create(buffer, 256, 256);
glReadPixels(512, 0, 128, 128, GL_RGBA, GL_UNSIGNED_BYTE, buffer);
_specialty[2].create(buffer, 128, 128);
glReadPixels(512, 128, 128, 128, GL_RGBA, GL_UNSIGNED_BYTE, buffer);
_specialty[3].create(buffer, 128, 128);
glReadPixels(0, 256, 256, 256, GL_RGBA, GL_UNSIGNED_BYTE, buffer);
_specialty[4].create(buffer, 256, 256);
glReadPixels(256, 256, 256, 256, GL_RGBA, GL_UNSIGNED_BYTE, buffer);
_specialty[5].create(buffer, 256, 256);
glReadPixels(512, 256, 128, 128, GL_RGBA, GL_UNSIGNED_BYTE, buffer);
_specialty[6].create(buffer, 128, 128);
glReadPixels(512, 384, 128, 128, GL_RGBA, GL_UNSIGNED_BYTE, buffer);
_specialty[7].create(buffer, 128, 128);
delete[] buffer;
}
void GfxOpenGLS::createEMIModel(EMIModel *model) {