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rework on graphics.cpp, implement some GFX with lua

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This commit is contained in:
Eduardo Bart
2011-08-14 14:45:25 -03:00
parent 2abe962aa9
commit afc197f2dc
28 changed files with 250 additions and 128 deletions
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127
src/framework/graphics/graphics.cpp
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@@ -10,13 +10,11 @@ Graphics g_graphics;
void Graphics::init()
{
m_drawMode = DRAW_NONE;
// setup opengl
glEnable(GL_ALPHA_TEST); // enable alpha by default
glAlphaFunc(GL_GREATER, 0.0f); // default alpha func
glDisable(GL_DEPTH_TEST); // we are rendering 2D only, we don't need depth buffer
//glEnable(GL_TEXTURE_2D); // enable textures by default
glEnable(GL_TEXTURE_2D); // enable textures by default
glHint(GL_PERSPECTIVE_CORRECTION_HINT, GL_NICEST);
glShadeModel(GL_SMOOTH);
glEnable(GL_BLEND);
@@ -25,6 +23,10 @@ void Graphics::init()
logInfo("GPU ", glGetString(GL_RENDERER));
logInfo("OpenGL ", glGetString(GL_VERSION));
m_drawing = false;
bindColor(Color::white);
m_opacity = 255;
}
void Graphics::terminate()
@@ -69,8 +71,6 @@ void Graphics::resize(const Size& size)
void Graphics::restoreViewport()
{
disableDrawing();
const int& width = m_screenSize.width();
const int& height = m_screenSize.height();
@@ -98,35 +98,16 @@ void Graphics::beginRender()
{
glClear(GL_COLOR_BUFFER_BIT);
glLoadIdentity();
// bind white color by default
glColor4ubv(Color::white.rgbaPtr());
m_boundColor = Color::white;
}
void Graphics::endRender()
{
disableDrawing();
// clear any bound texture
m_boundTexture.reset();
}
void Graphics::disableDrawing()
{
if(m_drawMode != DRAW_NONE) {
glEnd();
m_drawMode = DRAW_NONE;
m_boundTexture.reset();
glColor4ubv(Color::white.rgbaPtr());
}
assert(!m_drawing);
}
void Graphics::drawTexturedRect(const Rect& screenCoords,
const TexturePtr& texture,
const Rect& textureCoords,
const Color& color)
const Rect& textureCoords)
{
if(screenCoords.isEmpty() || textureCoords.isEmpty())
return;
@@ -150,21 +131,33 @@ void Graphics::drawTexturedRect(const Rect& screenCoords,
textureLeft = (float)textureCoords.left() / textureSize.width();
}
bindTexture(texture, color);
if(!m_drawing) {
bindTexture(texture);
glBegin(GL_QUADS);
}
glTexCoord2f(textureLeft, textureTop); glVertex2i(left, top);
glTexCoord2f(textureLeft, textureBottom); glVertex2i(left, bottom);
glTexCoord2f(textureRight, textureBottom); glVertex2i(right, bottom);
glTexCoord2f(textureRight, textureTop); glVertex2i(right, top);
if(!m_drawing)
glEnd();
}
void Graphics::drawRepeatedTexturedRect(const Rect& screenCoords,
const TexturePtr& texture,
const Rect& textureCoords,
const Color& color)
const Rect& textureCoords)
{
if(screenCoords.isEmpty() || textureCoords.isEmpty())
return;
if(!m_drawing) {
bindTexture(texture);
startDrawing();
}
// render many repeated texture rects
Rect virtualScreenCoords(0,0,screenCoords.size());
for(int y = 0; y <= virtualScreenCoords.height(); y += textureCoords.height()) {
@@ -185,14 +178,19 @@ void Graphics::drawRepeatedTexturedRect(const Rect& screenCoords,
}
partialCoords.translate(screenCoords.topLeft());
drawTexturedRect(partialCoords, texture, partialTextureCoords, color);
drawTexturedRect(partialCoords, texture, partialTextureCoords);
}
}
if(!m_drawing)
stopDrawing();
}
void Graphics::drawFilledRect(const Rect& screenCoords,
const Color& color)
{
assert(!m_drawing);
if(screenCoords.isEmpty())
return;
@@ -202,11 +200,18 @@ void Graphics::drawFilledRect(const Rect& screenCoords,
int top = screenCoords.top();
int left = screenCoords.left();
bindColor(color);
glColor4ubv(color.rgbaPtr());
glDisable(GL_TEXTURE_2D);
glBegin(GL_QUADS);
glVertex2i(left, top);
glVertex2i(left, bottom);
glVertex2i(right, bottom);
glVertex2i(right, top);
glEnd();
glEnable(GL_TEXTURE_2D);
}
@@ -214,6 +219,8 @@ void Graphics::drawBoundingRect(const Rect& screenCoords,
const Color& color,
int innerLineWidth)
{
assert(!m_drawing);
if(2 * innerLineWidth > screenCoords.height() || screenCoords.isEmpty())
return;
@@ -223,7 +230,9 @@ void Graphics::drawBoundingRect(const Rect& screenCoords,
int top = screenCoords.top();
int left = screenCoords.left();
bindColor(color);
glColor4ubv(color.rgbaPtr());
glDisable(GL_TEXTURE_2D);
glBegin(GL_QUADS);
// top line
glVertex2i(left, top);
@@ -248,40 +257,34 @@ void Graphics::drawBoundingRect(const Rect& screenCoords,
glVertex2i(right , bottom - innerLineWidth);
glVertex2i(right - innerLineWidth, bottom - innerLineWidth);
glVertex2i(right - innerLineWidth, top + innerLineWidth);
glEnd();
}
void Graphics::bindColor(const Color& color)
{
// switch drawing to colored quads
if(m_drawMode != DRAW_COLOR_QUADS || m_boundColor != color) {
if(m_drawMode != DRAW_NONE)
glEnd();
glDisable(GL_TEXTURE_2D);
if(m_boundColor != color) {
glColor4ubv(color.rgbaPtr());
m_boundColor = color;
}
glBegin(GL_QUADS);
m_drawMode = DRAW_COLOR_QUADS;
Color tmp = color;
tmp.setAlpha(std::min((uint8)m_opacity, color.a()));
glColor4ubv(tmp.rgbaPtr());
}
void Graphics::bindTexture(const TexturePtr& texture)
{
glBindTexture(GL_TEXTURE_2D, texture->getTextureId());
}
void Graphics::startDrawing()
{
assert(!m_drawing);
glBegin(GL_QUADS);
m_drawing = true;
}
void Graphics::stopDrawing()
{
if(m_drawing) {
glEnd();
m_drawing = false;
}
}
void Graphics::bindTexture(const TexturePtr& texture, const Color& color)
{
// switch drawing to textured quads
if(m_drawMode != DRAW_TEXTURE_QUADS || m_boundTexture != texture || m_boundColor != color) {
if(m_drawMode != DRAW_NONE)
glEnd();
glEnable(GL_TEXTURE_2D);
if(m_boundTexture != texture) {
glBindTexture(GL_TEXTURE_2D, texture->getTextureId());
m_boundTexture = texture;
}
if(m_boundColor != color) {
glColor4ubv(color.rgbaPtr());
m_boundColor = color;
}
glBegin(GL_QUADS);
m_drawMode = DRAW_TEXTURE_QUADS;
}
}