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Basic IGGY renderer implementation, do not PR.

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JuiceyDev
2026-03-05 16:54:56 +01:00
parent 299564be0a
commit cb4e0e82b7
6 changed files with 157 additions and 24 deletions
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46
4J.Render/4J_Render.cpp
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@@ -160,6 +160,14 @@ static GLenum mapPrimType(int pt)
}
}
// clientside awawawa
static bool isCompilingDisplayList()
{
GLint listMode = 0;
::glGetIntegerv(GL_LIST_MODE, &listMode);
return (listMode == GL_COMPILE || listMode == GL_COMPILE_AND_EXECUTE);
}
void C4JRender::DrawVertices(ePrimitiveType PrimitiveType, int count,
void *dataIn, eVertexType vType,
C4JRender::ePixelShaderType psType)
@@ -169,19 +177,39 @@ void C4JRender::DrawVertices(ePrimitiveType PrimitiveType, int count,
GLenum mode = mapPrimType((int)PrimitiveType);
unsigned char *data = (unsigned char *)dataIn;
// Vertex layout: 3 floats pos, 2 floats tex, 4 bytes color, 4 bytes normal, 4 bytes padding = 32 bytes
const int stride = 32;
::glEnableClientState(GL_VERTEX_ARRAY);
::glEnableClientState(GL_TEXTURE_COORD_ARRAY);
::glEnableClientState(GL_COLOR_ARRAY);
::glEnableClientState(GL_NORMAL_ARRAY);
if (isCompilingDisplayList()) {
// run.
::glBegin(mode);
for (int i = 0; i < count; i++) {
unsigned char *v = data + i * stride;
float *pos = (float *)(v);
float *tex = (float *)(v + 12);
unsigned char *col = v + 20;
signed char *nrm = (signed char *)(v + 24);
::glVertexPointer(3, GL_FLOAT, stride, data);
::glTexCoordPointer(2, GL_FLOAT, stride, data + 12);
::glColorPointer(4, GL_UNSIGNED_BYTE, stride, data + 20);
::glNormalPointer(GL_BYTE, stride, data + 24);
::glNormal3f(nrm[0] / 127.0f, nrm[1] / 127.0f, nrm[2] / 127.0f);
::glColor4ub(col[0], col[1], col[2], col[3]);
::glTexCoord2f(tex[0], tex[1]);
::glVertex3f(pos[0], pos[1], pos[2]);
}
::glEnd();
} else {
// waiter ! fast vertex pls !
::glEnableClientState(GL_VERTEX_ARRAY);
::glEnableClientState(GL_TEXTURE_COORD_ARRAY);
::glEnableClientState(GL_COLOR_ARRAY);
::glEnableClientState(GL_NORMAL_ARRAY);
::glDrawArrays(mode, 0, count);
::glVertexPointer(3, GL_FLOAT, stride, data);
::glTexCoordPointer(2, GL_FLOAT, stride, data + 12);
::glColorPointer(4, GL_UNSIGNED_BYTE, stride, data + 20);
::glNormalPointer(GL_BYTE, stride, data + 24);
::glDrawArrays(mode, 0, count);
}
}