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Code Issues Releases Wiki Activity

rework DarkLayer to use a VBO

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This commit is contained in:
fgenesis 2025-03-04 03:50:39 +01:00
parent 477293bb5a
commit 36826bfec5
2 changed files with 36 additions and 22 deletions

56
BBGE/DarkLayer.cpp
View file

@ -23,6 +23,7 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
#include "RenderBase.h"
DarkLayer::DarkLayer()
: vbo(GPUBUF_STATIC | GPUBUF_VERTEXBUF)
{
quality = 0;
active = false;
@ -50,6 +51,37 @@ void DarkLayer::reloadDevice()
frameBuffer.reloadDevice();
else
texture = generateEmptyTexture(quality);
// Update VBO
const float width = core->getWindowWidth();
const float height = core->getWindowHeight();
const float offX = -(core->getVirtualOffX() * width / core->getVirtualWidth());
const float offY = -(core->getVirtualOffY() * height / core->getVirtualHeight());
const float stretch = 4;
const float x0 = offX-stretch;
const float y0 = offY-stretch;
const float x1 = width+offX+stretch;
const float y1 = height+offY+stretch;
const size_t bytes = 4 * 4 * sizeof(float);
do
{
float *p = (float*)vbo.beginWrite(GPUBUFTYPE_VEC2_TC, bytes, GPUACCESS_DEFAULT);
*p++ = x0; *p++ = y1;
*p++ = 0; *p++ = 0;
*p++ = x1; *p++ = y1;
*p++ = 1; *p++ = 0;
*p++ = x0; *p++ = y0;
*p++ = 0; *p++ = 1;
*p++ = x1; *p++ = y0;
*p++ = 1; *p++ = 1;
}
while(!vbo.commitWrite());
}
bool DarkLayer::isUsed() const
@ -137,28 +169,8 @@ void DarkLayer::render(const RenderState& rs) const
rs.gpu.setBlend(BLEND_MULT);
glColor4f(1,1,1,1);
const float width = core->getWindowWidth();
const float height = core->getWindowHeight();
const float offX = -(core->getVirtualOffX() * width / core->getVirtualWidth());
const float offY = -(core->getVirtualOffY() * height / core->getVirtualHeight());
const float stretch = 4;
glBegin(GL_QUADS);
glTexCoord2f(0,1);
glVertex2f(offX-stretch, offY-stretch);
glTexCoord2f(0,0);
glVertex2f(offX-stretch, height+offY+stretch);
glTexCoord2f(1,0);
glVertex2f(width+offX+stretch, height+offY+stretch);
glTexCoord2f(1,1);
glVertex2f(width+offX+stretch, offY-stretch);
glEnd();
vbo.apply();
glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);
glPopMatrix();

2
BBGE/DarkLayer.h
View file

@ -23,6 +23,7 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
#include "Base.h"
#include "FrameBuffer.h"
#include "VertexBuffer.h"
struct RenderState;
@ -54,6 +55,7 @@ protected:
int layer;
bool active;
unsigned texture;
DynamicGPUBuffer vbo;
};
#endif