diff options
Diffstat (limited to 'libs/hwui/renderstate/RenderState.cpp')
| -rw-r--r-- | libs/hwui/renderstate/RenderState.cpp | 16 |
1 files changed, 13 insertions, 3 deletions
diff --git a/libs/hwui/renderstate/RenderState.cpp b/libs/hwui/renderstate/RenderState.cpp index c8833d2a7489..8b737bb241cb 100644 --- a/libs/hwui/renderstate/RenderState.cpp +++ b/libs/hwui/renderstate/RenderState.cpp @@ -413,18 +413,28 @@ void RenderState::render(const Glop& glop, const Matrix4& orthoMatrix) { const GLbyte* vertexData = static_cast<const GLbyte*>(vertices.position); while (elementsCount > 0) { GLsizei drawCount = std::min(elementsCount, (GLsizei) kMaxNumberOfQuads * 6); + GLsizei vertexCount = (drawCount / 6) * 4; meshState().bindPositionVertexPointer(vertexData, vertices.stride); if (vertices.attribFlags & VertexAttribFlags::TextureCoord) { meshState().bindTexCoordsVertexPointer( vertexData + kMeshTextureOffset, vertices.stride); } - glDrawElements(mesh.primitiveMode, drawCount, GL_UNSIGNED_SHORT, nullptr); + if (mCaches->extensions().getMajorGlVersion() >= 3) { + glDrawRangeElements(mesh.primitiveMode, 0, vertexCount-1, drawCount, GL_UNSIGNED_SHORT, nullptr); + } else { + glDrawElements(mesh.primitiveMode, drawCount, GL_UNSIGNED_SHORT, nullptr); + } elementsCount -= drawCount; - vertexData += (drawCount / 6) * 4 * vertices.stride; + vertexData += vertexCount * vertices.stride; } } else if (indices.bufferObject || indices.indices) { - glDrawElements(mesh.primitiveMode, mesh.elementCount, GL_UNSIGNED_SHORT, indices.indices); + if (mCaches->extensions().getMajorGlVersion() >= 3) { + // use glDrawRangeElements to reduce CPU overhead (otherwise the driver has to determine the min/max index values) + glDrawRangeElements(mesh.primitiveMode, 0, mesh.vertexCount-1, mesh.elementCount, GL_UNSIGNED_SHORT, indices.indices); + } else { + glDrawElements(mesh.primitiveMode, mesh.elementCount, GL_UNSIGNED_SHORT, indices.indices); + } } else { glDrawArrays(mesh.primitiveMode, 0, mesh.elementCount); } |