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Code Issues Releases Wiki Activity

use VBO to render tile borders

Browse source 
Also fix oversight in DynamicGPUBuffer::drawElements(); first wasn't used
This commit is contained in:
fgenesis 2023-08-26 00:14:05 +02:00
parent cc78b300cc
commit a111bfc17f
4 changed files with 18 additions and 17 deletions
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5
BBGE/Core.cpp
View file

@ -158,6 +158,8 @@ void Core::setup_opengl()
TexCoordBox defaultTC;
defaultTC.setStandard();
defaultQuadGrid.init(2, 2, defaultTC);
defautQuadBorder.initQuadVertices(defaultTC, GPUACCESS_DEFAULT);
}
void Core::resizeWindow(int w, int h, int full, int bpp, int vsync, int display, int hz)
@ -281,7 +283,7 @@ static bool checkWritable(const std::string& path, bool warn, bool critical)
Core::Core(const std::string &filesystem, const std::string& extraDataDir, int numRenderLayers, const std::string &appName, int particleSize, std::string userDataSubFolder)
: ActionMapper(), StateManager(), appName(appName)
: ActionMapper(), StateManager(), appName(appName), defautQuadBorder(GPUBUF_STATIC | GPUBUF_VERTEXBUF)
{
window = NULL;
sound = NULL;
@ -1922,6 +1924,7 @@ void Core::shutdown()
debugLog("OK");
defaultQuadGrid.dropBuffers();
defautQuadBorder.dropBuffer();
debugLog("Shutdown Graphics Library...");
shutdownGraphicsLibrary();

2
BBGE/Core.h
View file

@ -413,6 +413,7 @@ public:
TextureMgr texmgr;
inline const RenderGrid *getDefaultQuadGrid() const { return &defaultQuadGrid; }
inline const DynamicGPUBuffer *getDefaultQuadBorderBuf() const { return &defautQuadBorder; }
protected:
@ -492,6 +493,7 @@ protected:
void clearActionButtons();
RenderGrid defaultQuadGrid;
DynamicGPUBuffer defautQuadBorder;
public:
// inclusive!

16
BBGE/TileRender.cpp
View file

@ -62,6 +62,7 @@ void TileRender::onRender(const RenderState& rs) const
unsigned lastTexId = 0;
const bool renderExtras = renderBorders || RenderObject::renderCollisionShape;
const TileEffectData *prevEff = ((TileEffectData*)NULL)+1; // initial value is different from anything else
for(size_t i = 0; i < storage.tiles.size(); ++i)
@ -183,20 +184,11 @@ void TileRender::onRender(const RenderState& rs) const
color *= getTagColor(tile.tag);
glColor4f(color.x, color.y, color.z, 1.0f);
core->getDefaultQuadBorderBuf()->apply();
glPointSize(16);
glBegin(GL_POINTS);
glVertex2f(0,0);
glEnd();
// TODO: move this to the IBO
glDrawArrays(GL_POINTS, 4, 1);
glLineWidth(2);
glBegin(GL_LINE_STRIP);
glVertex2f(0.5f, 0.5f);
glVertex2f(0.5f, -0.5f);
glVertex2f(-0.5f, -0.5f);
glVertex2f(-0.5f, 0.5f);
glVertex2f(0.5f, 0.5f);
glEnd();
glDrawArrays(GL_LINE_LOOP, 0, 4);
}
}

12
BBGE/VertexBuffer.cpp
View file

@ -279,17 +279,17 @@ void DynamicGPUBuffer::drawElements(unsigned glmode, size_t n, size_t first) con
glBindBufferARB(GL_ELEMENT_ARRAY_BUFFER_ARB, id);
//}
void *p = id ? NULL : _h_data;
const unsigned short *p = (unsigned short*)(id ? NULL : _h_data);
assert(p || id);
glDrawElements(glmode, n, GL_UNSIGNED_SHORT, p);
glDrawElements(glmode, n, GL_UNSIGNED_SHORT, p + first);
}
void DynamicGPUBuffer::initQuadVertices(const TexCoordBox& tc, unsigned access)
{
do
{
float *p = (float*)beginWrite(GPUBUFTYPE_VEC2_TC, (4*4) * sizeof(float), access);
float *p = (float*)beginWrite(GPUBUFTYPE_VEC2_TC, (4*4 + 4) * sizeof(float), access);
*p++ = -0.5f; *p++ = +0.5f; // xy
*p++ = tc.u1; *p++ = tc.v1; // uv
*p++ = +0.5f; *p++ = +0.5f; // xy
@ -298,6 +298,9 @@ void DynamicGPUBuffer::initQuadVertices(const TexCoordBox& tc, unsigned access)
*p++ = tc.u2; *p++ = tc.v2; // uv
*p++ = -0.5f; *p++ = -0.5f; // xy
*p++ = tc.u1; *p++ = tc.v2; // uv
for(size_t i = 0; i < 4; ++i)
*p++ = 0; // zero/center xy uv (uv isn't used)
}
while(!commitWrite());
}
@ -318,9 +321,10 @@ size_t DynamicGPUBuffer::initGridIndices_Triangles(size_t w, size_t h, bool inve
const size_t quadsx = w - 1;
const size_t quadsy = h - 1;
const size_t quads = quadsx * quadsy;
const size_t border = 4; // for GL_LINE_LOOP
do
{
unsigned short *p = (unsigned short*)beginWrite(GPUBUFTYPE_U16, 6*quads * sizeof(short), access);
unsigned short *p = (unsigned short*)beginWrite(GPUBUFTYPE_U16, (6*quads + border) * sizeof(short), access);
if(!invert)
{