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Conditional line shader.

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This commit is contained in:
Leonardo Zide
2021-03-06 18:54:24 -08:00
parent cf664584c6
commit c3ad14ac04
13 changed files with 763 additions and 562 deletions
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common/lc_scene.cpp
+9 -49
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@@ -242,53 +242,16 @@ void lcScene::DrawOpaqueMeshes(lcContext* Context, bool DrawLit, int PrimitiveTy
}
else if (Section->PrimitiveType == LC_MESH_CONDITIONAL_LINES)
{
const lcMatrix44 WorldViewProjectionMatrix = lcMul(RenderMesh.WorldMatrix, lcMul(mViewMatrix, Context->GetProjectionMatrix()));
const lcVertex* const VertexBuffer = (lcVertex*)Mesh->mVertexData;
int VertexBufferOffset = Mesh->mVertexCacheOffset != -1 ? Mesh->mVertexCacheOffset : 0;
VertexBufferOffset += Mesh->mNumVertices * sizeof(lcVertex) + Mesh->mNumTexturedVertices * sizeof(lcVertexTextured);
const int IndexBufferOffset = Mesh->mIndexCacheOffset != -1 ? Mesh->mIndexCacheOffset : 0;
const int VertexBufferOffset = Mesh->mVertexCacheOffset != -1 ? Mesh->mVertexCacheOffset : 0;
Context->SetVertexFormat(VertexBufferOffset, 3, 1, 0, 0, DrawLit);
Context->SetEdgeColorIndex(ColorIndex);
Context->SetMaterial(lcMaterialType::UnlitColorConditional);
Context->SetVertexFormatConditional(VertexBufferOffset);
if (Mesh->mIndexType == GL_UNSIGNED_SHORT)
{
const quint16* const Indices = (quint16*)((char*)Mesh->mIndexData + Section->IndexOffset);
for (int i = 0; i < Section->NumIndices; i += 4)
{
lcVector4 p1 = lcMul4(lcVector4(VertexBuffer[Indices[i + 0]].Position, 1.0f), WorldViewProjectionMatrix);
lcVector4 p2 = lcMul4(lcVector4(VertexBuffer[Indices[i + 1]].Position, 1.0f), WorldViewProjectionMatrix);
lcVector4 p3 = lcMul4(lcVector4(VertexBuffer[Indices[i + 2]].Position, 1.0f), WorldViewProjectionMatrix);
lcVector4 p4 = lcMul4(lcVector4(VertexBuffer[Indices[i + 3]].Position, 1.0f), WorldViewProjectionMatrix);
p1 /= p1.w;
p2 /= p2.w;
p3 /= p3.w;
p4 /= p4.w;
if (((p1.y - p2.y) * (p3.x - p1.x) + (p2.x - p1.x) * (p3.y - p1.y)) * ((p1.y - p2.y) * (p4.x - p1.x) + (p2.x - p1.x) * (p4.y - p1.y)) >= 0)
Context->DrawIndexedPrimitives(GL_LINES, 2, Mesh->mIndexType, IndexBufferOffset + Section->IndexOffset + i * sizeof(quint16));
}
}
else
{
const quint32* const Indices = (quint32*)((char*)Mesh->mIndexData + Section->IndexOffset);
for (int i = 0; i < Section->NumIndices; i += 4)
{
lcVector4 p1 = lcMul4(lcVector4(VertexBuffer[Indices[i + 0]].Position, 1.0f), WorldViewProjectionMatrix);
lcVector4 p2 = lcMul4(lcVector4(VertexBuffer[Indices[i + 1]].Position, 1.0f), WorldViewProjectionMatrix);
lcVector4 p3 = lcMul4(lcVector4(VertexBuffer[Indices[i + 2]].Position, 1.0f), WorldViewProjectionMatrix);
lcVector4 p4 = lcMul4(lcVector4(VertexBuffer[Indices[i + 3]].Position, 1.0f), WorldViewProjectionMatrix);
p1 /= p1.w;
p2 /= p2.w;
p3 /= p3.w;
p4 /= p4.w;
if (((p1.y - p2.y) * (p3.x - p1.x) + (p2.x - p1.x) * (p3.y - p1.y)) * ((p1.y - p2.y) * (p4.x - p1.x) + (p2.x - p1.x) * (p4.y - p1.y)) >= 0)
Context->DrawIndexedPrimitives(GL_LINES, 2, Mesh->mIndexType, IndexBufferOffset + Section->IndexOffset + i * sizeof(quint32));
}
}
const GLenum DrawPrimitiveType = Section->PrimitiveType & (LC_MESH_TRIANGLES | LC_MESH_TEXTURED_TRIANGLES) ? GL_TRIANGLES : GL_LINES;
Context->DrawIndexedPrimitives(DrawPrimitiveType, Section->NumIndices, Mesh->mIndexType, IndexBufferOffset + Section->IndexOffset);
continue;
}
@@ -440,8 +403,9 @@ void lcScene::Draw(lcContext* Context) const
Context->SetViewMatrix(mViewMatrix);
constexpr bool DrawConditional = false;
const lcPreferences& Preferences = lcGetPreferences();
const bool DrawLines = Preferences.mDrawEdgeLines && Preferences.mLineWidth != 0.0f;
const bool DrawConditional = false;
// lcShadingMode ShadingMode = Preferences.mShadingMode;
// if (ShadingMode == lcShadingMode::Wireframe && !mAllowWireframe)
@@ -461,8 +425,6 @@ void lcScene::Draw(lcContext* Context) const
}
else if (mShadingMode == lcShadingMode::Flat)
{
const bool DrawLines = Preferences.mDrawEdgeLines && Preferences.mLineWidth != 0.0f;
int LinePrimitiveTypes = 0;
if (DrawLines)
@@ -501,8 +463,6 @@ void lcScene::Draw(lcContext* Context) const
}
else
{
const bool DrawLines = Preferences.mDrawEdgeLines && Preferences.mLineWidth != 0.0f;
int LinePrimitiveTypes = LC_MESH_LINES;
if (DrawConditional)