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| author | Dan Goodliffe <dan@randomdan.homeip.net> | 2026-03-11 20:45:05 +0000 |
|---|---|---|
| committer | Dan Goodliffe <dan@randomdan.homeip.net> | 2026-03-11 20:45:05 +0000 |
| commit | c403a71564def731f4d3b80d6ff63f08aa3c7ea3 (patch) | |
| tree | e4302316295639da9a2d10181c498986c8806754 /gfx/models/mesh.cpp | |
| parent | Add missing typename exporting base::value_type from InstanceVertices (diff) | |
| download | ilt-c403a71564def731f4d3b80d6ff63f08aa3c7ea3.tar.bz2 ilt-c403a71564def731f4d3b80d6ff63f08aa3c7ea3.tar.xz ilt-c403a71564def731f4d3b80d6ff63f08aa3c7ea3.zip | |
Reuse vertex array objects for common structures with DSA
Slashes the number of VAOs required and the amount of setup required.
Diffstat (limited to 'gfx/models/mesh.cpp')
| -rw-r--r-- | gfx/models/mesh.cpp | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/gfx/models/mesh.cpp b/gfx/models/mesh.cpp index 88314ae..6a53f52 100644 --- a/gfx/models/mesh.cpp +++ b/gfx/models/mesh.cpp @@ -1,7 +1,8 @@ #include "mesh.h" -MeshBase::MeshBase(GLsizei m_numIndices, GLenum mode, const std::vector<RelativePosition3D> & positions) : - numIndices {m_numIndices}, mode {mode}, dimensions {positions} +MeshBase::MeshBase( + GLsizei m_numIndices, GLenum mode, const std::vector<RelativePosition3D> & positions, GLsizei vertexStride) : + vertexStride {vertexStride}, numIndices {m_numIndices}, mode {mode}, dimensions {positions} { } @@ -31,7 +32,9 @@ MeshBase::Dimensions::extents(const std::span<const RelativePosition3D> position void MeshBase::draw() const { - glBindVertexArray(vertexArrayObject); + glBindVertexArray(*vertexArrayObject); + glVertexArrayVertexBuffer(*vertexArrayObject, 0, vertexArrayBuffers[0], 0, vertexStride); + glVertexArrayElementBuffer(*vertexArrayObject, vertexArrayBuffers[1]); glDrawElements(mode, numIndices, GL_UNSIGNED_INT, nullptr); @@ -42,6 +45,8 @@ void MeshBase::drawInstanced(GLuint vao, GLsizei count, GLuint base) const { glBindVertexArray(vao); + glVertexArrayVertexBuffer(vao, 0, vertexArrayBuffers[0], 0, vertexStride); + glVertexArrayElementBuffer(vao, vertexArrayBuffers[1]); glDrawElementsInstancedBaseInstance(mode, numIndices, GL_UNSIGNED_INT, nullptr, count, base); |